Showing papers on "Chemical resistance published in 2011"
TL;DR: In this article, a mixture of soybean oil and glycerol was esterified by a 1:3 molar ratio to produce monoglycerides, and then reacted with phthalic anhydride at ratios 20, 40% and 60% to produce polyester polyols denoted by PES20, PES40 and PES60.
67 citations
TL;DR: Fluorine-containing poly-styrene-acrylate (PSA) latex with core-shell structure was successfully synthesized by seeded semicontinuous emulsion polymerization using fluorine monomer Actyflon-G04 and reactive emulsifier DNS-86.
Abstract: Fluorine-containing poly-styrene-acrylate (PSA) latex with core–shell structure was successfully synthesized by seeded semicontinuous emulsion polymerization using fluorine monomer Actyflon-G04 and reactive emulsifier DNS-86. The chemical composition, morphology of latex, and surface composition of the latex film were characterized by Fourier transform infrared spectra, transmission electron microscopy, and X-ray photoelectron spectroscopy, respectively. The stability properties of latex were tested by Ca2+, centrifugal and mechanical stability tests, and the latex film was studied by water contact angle, water absorption ratio, and thermo-gravimetric analysis. The results show that fluorine-containing PSA latex particles with crosslinked core and crosslinked shell structure have excellent stability properties, and the film of latex has excellent water repellency, thermal stability, and chemical resistance properties when the amount of fluorine monomer was only 8.0 wt%.
47 citations
Patent•
11 May 2011
TL;DR: In this paper, an environmentally-friendly high-performance water-based woodware paint is presented. But the method of using it is not described. But it is mainly prepared from the self-crosslinking acrylic emulsion with high triglyceride (Tg) content and weather resistance, so that a paint film has high quick-drying property, chemical resistance and weather resistant, and economy.
Abstract: The invention discloses an environmentally-friendly high-performance water-based woodware paint and a using method thereof. The environmentally-friendly high-performance water-based woodware paint comprises 40 to 70 weight percent of self-crosslinking acrylic nano-emulsion and 10 to 20 weight percent of water-based aliphatic polyurethane dispersion. The water-based woodware paint is mainly prepared from the self-crosslinking acrylic emulsion with high triglyceride (Tg) content and weather resistance, so that a paint film has high quick-drying property, chemical resistance and weather resistance, and economy; the self-crosslinking acrylic emulsion is compounded with castor oil modified aliphatic polyurethane dispersion, so that the paint film has high adhesion, hardness, fullness, weather resistance, dry heat resistance and block resistance; and diethylene glycol monobutyl ether is matched with dipropylene glycol methyl ether and propylene glycol monobutyl ether, so that the film forming property of the paint film is ensured, and high drying property is achieved.
27 citations
TL;DR: A series of ultraviolet-curable, boron-containing hybrid coatings were prepared by an anhy-drous sol-gel technique from a mixture of an acrylated bisphenol A based epoxy resin, methacryloxymethyl trie- thoxysilane, and boric acid as discussed by the authors.
Abstract: A series of ultraviolet (UV)-curable, boron- containing hybrid coatings were prepared by an anhy- drous sol-gel technique from a mixture of an acrylated bisphenol A based epoxy resin, methacryloxymethyl trie- thoxysilane, and boric acid. The use of boric acid allowed the hydrolysis and condensation of hybrid silicon alkox- ides without the further addition of water or a catalyst. The chemical structure of the boron-containing hybrid coatings was characterized with Fourier transform infra- red, real-time infrared, and 29 Si cross-polarization/magic- angle spinning NMR techniques. UV-curable coatings were applied to polycarbonate and Plexiglas substrates. The physical and mechanical properties of the UV-cured coatings (e.g., pendulum hardness, pencil hardness, con- tact angle, gel content, methyl ethyl ketone rubbing test, tensile test, abrasion resistance, chemical resistance, neutron absorption, and limiting oxygen index) were examined. The hybrid coatings showed a significant enhancement in their radiation-shielding properties. The thermal behavior of the coatings was also evaluated. It was observed that the thermal stability of the coatings mainly depended on their boron and silicate contents. The results of all analyses of the free films and coatings were examined. V C 2010 Wiley Periodicals, V C 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 2112-2121, 2011
23 citations
TL;DR: In this article, the suitability of the prepared polymeric composites as building materials in terms of mechanical properties, water absorption and chemical resistance was studied, after 1-week immersion in water, 10% sodium chloride (NaCl) and 10% Sodium sulfate (Na 2 SO 4 ) solutions, it was found that the chemical resistance and the mechanical properties were enhanced and the water absorption was retarded.
20 citations
TL;DR: In this article, an unmodified calcium carbonate (CaCO 3 ) was introduced into a water-soluble polyurethane (PU) matrix and smooth and transparent films were prepared from both the neat PU and the CaCO 3 -filled composites.
16 citations
TL;DR: In this paper, a modified anti-corrosive polyesteramide resins were obtained by means of a condensation polymerization reaction between N,N-bis (2-hydroxyethyl) linseed oil fatty acid amide (HELA) and phthalic anhydride (PA), which was partially replaced with pyromellitimide acetic acid (PAA) as a new dibasic acid source.
15 citations
Patent•
23 Nov 2011
TL;DR: In this article, a perfluoro alkyl ethyl acrylic ester-modified single-component acrylic resin has been described and a preparation method as well as application thereof is described.
Abstract: The invention relates to a perfluoro alkyl ethyl acrylic ester-modified single-component acrylic resin and a preparation method as well as application thereof. The perfluoro alkyl ethyl acrylic ester-modified single-component acrylic resin has the structural formula which is shown in the specification, wherein n is equal to 4, 6 or 8; and the molecular weight is 40,000-55,000. The preparation method comprises the following steps of: adding a solvent into a reaction vessel and heating to 60-80 DEG C; uniformly mixing methyl methacrylate, acrylic acid, butyl acrylate, hydroxyethyl acrylate and perfluoro alkyl ethyl acrylic ester type monomer with an initiator and dropwise adding for 2-3 hours; preserving heat for 0.5-1 hour; and cooling to 40-70 DEG C and discharging. The resin prepared by the invention has high thermal stability and chemical resistance stability and low surface energy and is used as a main raw material of a paint; and a coating also has low surface energy, strong water-proof and oil-proof capacities and high weather resistance, corrosion resistance and aging resistance, has superior mechanical performance and high glossiness of an acrylic ester paint, can be cured at normal temperature and is easy and convenient to use.
15 citations
TL;DR: In this article, the use of plastic bottle waste as cement-substitution within composite materials for preventing chemical attacks or repairing various reinforced concrete structures is described, which can reduce the penetration of aggressive agents.
Abstract: This paper describes an innovative use of plastic bottle waste as cement-substitution within composite materials for preventing chemical attacks or repairing various reinforced concrete structures. Various weight fractions of cement varying from 2.5% to 7.5% were substituted by the same weight of polyethylene terephthalate (PET). The specimens were tested in flexure and compressive strength and for chemical resistance to acid, basic solutions at 5% and for chloride ion permeability. From this study, it was found that the PET-modified mortars exposed to aggressive environments showed better resistance to chemical attack and higher resistance to chloride ion penetration than unmodified one without substantially affecting the mechanical strength in tap water. The addition of PET to the modified mortars, means reducing the penetration of aggressive agents. So, the mass loss of composites exposed to hydrochloric and acetic acid solutions is lower than those of unmodified mortar. The basic solutions are harmless for composite materials. The formations which appear such as different calcium salts were determined by X-ray diffraction and FT-IR.
14 citations
Patent•
17 Oct 2011TL;DR: In this article, a layered heat-resistant garment that not only has excellent heat resistance, chemical resistance, moisture permeability, and waterproofing, but also meets specifications for flame exposure tests (ISO 9151) for ISO 11613 Approaches A and B and radiation exposure test (ISO 6942-2002), is lightweight, has high heat shielding ability, and little heat stress.
Abstract: The present invention provides a layered heat-resistant protective garment that not only has excellent heat resistance, chemical resistance, moisture permeability, and waterproofing, but also meets specifications for flame exposure tests (ISO 9151) for ISO 11613 Approaches A and B and radiation exposure tests (ISO 6942-2002), is lightweight, has a high heat shielding ability, and little heat stress.
11 citations
TL;DR: In this article, a new generation of segmented thermoplastic poly(urethane-thiourea-imide)s (PUTIs) was synthesized via reaction of polyethylene glycol and thioure-based prepolymer with dianhydride as chain extenders.
Patent•
13 Jul 2011
TL;DR: In this paper, a solvent-free nano composite epoxy resin floor coating has been proposed, which has excellent mechanical properties of wear resistance, press resistance, impact resistance, bending resistance and bending resistance, excellent chemical resistance properties and better leveling property and process operability.
Abstract: The invention discloses a solvent-free nano composite epoxy resin floor coating and a preparation method thereof. The floor coating is prepared by adding a halloysite nano tube as a nano reinforced modifying agent on the basis of epoxy rein, a curing agent, a pigment filler, a diluting agent and other aids. The solvent-free nano composite epoxy resin floor coating has excellent mechanical properties of wear resistance, press resistance, impact resistance, bending resistance and the like, excellent chemical resistance properties and better leveling property and process operability, and has theadvantages of simple preparation, convenience for construction, no emission of solvent and VOC (volatile organic compounds), and lower cost, and the coating film has smooth and attractive appearance.
TL;DR: In this paper, the thermal and chemical changes in Hibiscus sabdariffa stem fiber on graft copolymerization with methyl acrylate (MA) and acrylonitrile (AN) monomer, using a ceric ammonium nitrate-nitric acid initiator system, has been reported.
Abstract: In this paper, the thermal and chemical changes in Hibiscus sabdariffa stem fiber on graft copolymerization with methyl acrylate (MA) and acrylonitrile (AN) monomer, using a ceric ammonium nitrate – nitric acid initiator system, has been reported. Different reaction parameters such as temperature, time, initiator concentration, monomer concentration, and pH were optimized to get the maximum graft yield. The graft copolymer thus formed was characterized by FTIR, SEM, TGA, DTA, and XRD techniques. The swelling behavior of graft copolymers in methanol, n-butanol, water and di methyl formamide was studied and screened for dye uptake behavior in 0.1% gentian violet dye for seven hours. With increase in percentage grafting the percentage crystallinity, crystallinity index, and moisture absorbance were found to decrease whereas chemical resistance (against 1 N HCl and 1 N NaOH) and thermal resistance were found to increase for its various advanced applications.
Patent•
26 Oct 2011
TL;DR: In this paper, a method for preparing water-based polyurethane emulsion with a room-temperature self-crosslinking characteristic is described, which has excellent water resistance, acid and alkali resistance and chemical resistance, and also has excellent physical and mechanical properties of high hardness, high elasticity, scratch resistance and the like.
Abstract: The invention discloses a method for preparing water-based polyurethane emulsion with a room-temperature self-crosslinking characteristic The emulsion is prepared from the following raw materials by weight part: 1) 100 parts of low-polymer diol, 2) 50 to 150 parts of polyisocyanate, 3) 8 to 28 parts of hydrophilic compound or potential hydrophilic compound, 4) 5 to 50 parts of acetoacetyl compound, 5) 1 to 20 parts of micro-molecule dolichol compound, 6) 05 to 10 parts of polyamine compound, 7) 1 to 21 parts of ammonia or organic amine, selectively, 8) 001 to 01 parts of polyurethane reaction catalyst, and selectively, 9) 20 to 310 parts of organic solvent The film formed by the emulsion prepared by the method has excellent water resistance, acid and alkali resistance and chemical resistance, and also has the excellent physical and mechanical properties of high hardness, high elasticity, scratch resistance and the like
Patent•
23 Nov 2011
TL;DR: In this paper, a cable sheath rubber with high strength, high flexibility and flame retardancy has been presented, which has the characteristics of high strength and high flexibility, and at the same time, the material has the advantages of oil resistance, heat resistance, fire resistance, weathering resistance, ozone resistance, acid and base resistance, chemical resistance and the like.
Abstract: The invention discloses a high-strength high-flexibility flame-retardant cable sheath rubber and a preparation method thereof. The sheath rubber comprises 100 parts of chlorosulfonated polyethylene, 15-25 parts of plasticizer, 3-7 parts of compound stabilizer, 40-60 parts of thermal decomposition process carbon black, 15-25 parts of active calcium carbonate, 3-6 parts of antimony trioxide, 2-4 parts of vaseline, 1.5-4.5 parts of antioxidant, 8-10 parts of magnesium oxide and 10-15 parts of epoxy resin. In the cable sheath rubber disclosed by the invention, through the optimal combination of chlorosulfonated polyethylene and other components, the material has the characteristics of high strength, high flexibility and flame retardancy, and at the same time, the material has the advantages of oil resistance, heat resistance, fire resistance, weathering resistance, ozone resistance, acid and base resistance, chemical resistance and the like.
01 Jan 2011
TL;DR: In this article, Castor oil (C) was reacted with commercial epoxy resin (E) (diglycidylether of bisphenol-A, DGEBF) at various mole ratios.
Abstract: Castor oil (C) was reacted with commercial epoxy resin (E) (diglycidylether of bisphenol-A, DGEBF) at various mole ratios. The resultant products were designated as CEs. Isocyanate terminated caster oil Polyurethane (ICOPU) was prepared by reaction of caster oil and various proportion of hexamethylene diisocyanate. A commercial alkyd resin was blended with various proportions of CEs and ICOPU. A unique solvent system, which shows a one – phase clear solution and a clear coat of binder system, was used. All the blends were applied on mild steel panels and characterized for drying time, adhesion, flexibility, hardness, impact resistance and chemical resistance properties.
Patent•
22 Jun 2011
TL;DR: In this article, a method for preparing an epoxy and polyvinyl chloride (PVC) composite flexible faced material, which comprises the following steps of: preparing epoxy coating by weighing, baiting and stirring, uniformly coating the epoxy on the surface of glass fiber cloth of a PVC glass fiber composite coating through a coater, then baking for 15 to 20 minutes at the temperature of between 90 and 120 DEG C, and finally cooling, trimming and coiling to obtain the epoxide and PVC composite flexible face material.
Abstract: The invention discloses a method for preparing an epoxy and polyvinyl chloride (PVC) composite flexible faced material, which comprises the following steps of: preparing an epoxy coating by weighing, baiting and stirring, uniformly coating the epoxy coating on the surface of glass fiber cloth of a PVC glass fiber composite coating through a coater, then baking for 15 to 20 minutes at the temperature of between 90 and 120 DEG C, and finally cooling, trimming and coiling to obtain the epoxy and PVC composite flexible faced material Specific raw materials and proportion of the raw materials are adopted in the method; and the produced epoxy and PVC composite flexible faced material has excellent physical and chemical properties of epoxy resin such as abrasion resistance, scouring resistance, grease dirt resistance, ageing resistance, strong chemical resistance, strong adhesive force and the like Because the PVC coating with good flexibility is used as a bottom material coating, flexibility and easy sticking property of the faced material are increased By using glass fibers as a material skeleton, the material is further enhanced, and the problems of frangibility, easy cracking and the like of most faced materials are solved
Patent•
15 Sep 2011TL;DR: In this article, a polyoxamide resin has been described which has excellent impact resistance and is obtained from a diamine in which the diamine component has 10 to 18 carbons and has a relative viscosity (ηr) of 2.1 or greater as determined at 25°C using 96% sulfuric acid as a solvent.
Abstract: Provided is a polyoxamide resin which has excellent impact resistance and is characterized in that the polyoxamide resin is obtained from a diamine in which the diamine component has 10 to 18 carbons and in that the polyoxamide resin has a relative viscosity (ηr) of 2.1 or greater as determined at 25°C using 96% sulfuric acid as a solvent and a solution having a concentration of 1.0 g/dL, and also provided is an impact-resistant part comprising this resin. The polyoxamide resin has a higher molecular weight than a conventional polyoxamide resin, a large moldable temperature range as estimated from the difference between the melting point and the thermal decomposition temperature and therefore excellent molten moldability, and furthermore excellent impact resistance when compared to a conventional aliphatic polyoxamide resin without losing the low water absorbency, chemical resistance, hydrolysis resistance, high elasticity, and high strength seen with aliphatic straight-chain polyoxamide resins.
Patent•
14 Nov 2011TL;DR: In this article, a polylactic acid composition with improved heat-resistance and improved impact strength is presented. But, it is not shown that it can be used as a bioplastic in interior/exterior parts of a vehicle.
Abstract: Disclosed is a polylactic acid composition with improved heat-resistance and improved impact-resistance. Specifically, in the disclosed polylactic acid composition, both impact strength and heat-resistance are improved by mixing 30 to 80 wt % of polyketone and 10 to 40 wt % of modified rubber. The disclosed polylactic acid composition does not only exhibit excellent in heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance, etc., but also has improved impact-resistance and improved heat resistance. Thus, it is possible to employ polylactic acid as a bioplastic in interior/exterior parts of a vehicle.
Patent•
07 Jul 2011
TL;DR: In this paper, a polycarbonate resin composition with a polybutylene terephthalate (PET) resin component was proposed to provide high level flame retardant property and to provide its molded article.
Abstract: PROBLEM TO BE SOLVED: To provide a polycarbonate resin composition being excellent in impact resistance and chemical resistance and having a high level flame retardant property and to provide its molded article SOLUTION: In a resin composition containing a polycarbonate resin (A) with a viscosity average molecular weight of 18,000-25,000, a polybutylene terephthalate resin (B) with an intrinsic viscosity of 06-09, an impact modifier (C), a halogenated polymer type flame retardant (D) with a weight-average molecular weight of 3,000-30,000, an antimony compound (E) and a transesterification inhibitor (F), a ratio (weight ratio) of the polycarbonate resin (A) to the polybutylene terephthalate resin (B) is former/latter=70/30 to 90/10 and 3-9 ptswt of the impact modifier (C), 10-20 ptswt of the halongenated polymer type flame retardant (D), 2-10 ptswt of the antimony compound (E) and 001-05 ptwt of the transesterification inhibitor (F) are contained in 100 ptswt of the total of the polycarbonate resin (A) and the polybutylene terephthalate resin (B) COPYRIGHT: (C)2011,JPO&INPIT
Patent•
06 May 2011
TL;DR: In this article, the authors proposed a coating composition that is for forming dry type sliding film (dry film) onto sliding members, and not only can make the film excellent in lubricity, wear resistance, corrosion resistance, and heat resistance, but also can improve long term stability of a sliding part by improving chemical resistance and adhesiveness, moreover is out of environmental control and is environmentally friendly.
Abstract: PROBLEM TO BE SOLVED: To provide a coating composition that is for forming dry type sliding film (dry film) onto sliding members, and not only can make the film excellent in lubricity, wear resistance, corrosion resistance, and heat resistance, but also can improve long term stability of a sliding part by improving chemical resistance and adhesiveness, moreover is out of environmental control and is environmentally friendly SOLUTION: The coating composition includes a binder resin, fluororesin as a solid lubricant, fluorine-based surfactant, and organic solvent, wherein either a straight chain fluorine-based surfactant having perfluoroalkyl group or a branched chain fluorine-based surfactant having perfluoroalkenyl group is used as the fluorine-based surfactant COPYRIGHT: (C)2011,JPO&INPIT
DOI•
01 Jan 2011
TL;DR: In this paper, the effects of fibers on the mechanical properties and chemical solution resistance of porous concrete with fiber type (jute, pulp, PVA and nylon fiber) and fiber volume fraction were evaluated.
Abstract: This study evaluated the effects of fibers on the mechanical properties and chemical solution resistance of porous concrete with fiber type (jute, pulp, PVA and nylon fiber) and fiber volume fraction (0.0%, 0.1%, 0.2%, 0.3%). The tests that were carried out to analysis the properties of porous concrete included compressive strength, void ratio, pH value, and chemical solution exposure with varying type and volume fraction of fiber were conducted. The type and volume fraction of fiber also affected the void ratio, compressive strength, flexural strength and chemical solution exposure. Increased volume fractions of fiber resulted in improved properties of the compressive strength, flexural strength and void ratio. However, the difference between the measured pH value and chemical resistance of porous concrete with fiber type and volume fraction was not significant.
Patent•
11 May 2011
TL;DR: In this paper, a light-colored thick paste type epoxy static conductive anticorrosive paint and a preparation method thereof is described. But the preparation method is not described.
Abstract: The invention discloses a light-colored thick paste type epoxy static conductive anticorrosive paint and a preparation method thereof. A component A comprises the following in parts by weight: 25-35% of epoxy resin, 15-25% of solvent thinner, 0.1-0.5% of defoamer, 0.1-0.5% of coupling agent, 0.1-1% of conductive agent, 0.5-1.5% of polyamide wax powder, 25-35% of conductive filler and 20-30% of filler; and a component B is Mannich modified arylated alkyl amine addition curing agent which accounts for 20-30% of the total mass of the component A. The paint provided by the invention has excellent heat resistance, oil resistance, salt water resistance, salt spray resistance, resistance to acids and bases, stable electric conductivity, compact coating, strong adhesive force, good shock resistance, and excellent chemical resistance and antiseptic property; and the paint is suitable for static conductive anticorrosive protection, coating repair and the like of a storage tank, oil and gas pipelines and chemical equipment, and can achieve an application thickness once.
Patent•
16 Jun 2011
TL;DR: In this article, a polycarbonate composite resin composition that improves chemical resistance, and furthermore, heat stability and impact resistance of a poly-carbonate resin without impairing appearance thereof is presented.
Abstract: PROBLEM TO BE SOLVED: To provide a polycarbonate composite resin composition that improves chemical resistance, and furthermore, heat stability and impact resistance of a polycarbonate resin without impairing appearance thereof. SOLUTION: The polycarbonate composite resin composition contains, as a resin principal component, 85-99 mass% of a polycarbonate resin and 1-15 mass% of a silane-modified polyethylene resin having density of 0.85-0.92 g/cm 3 obtained by copolymerizing an ethylenically unsaturated silane compound with polyethylene. The chemical resistance, and furthermore, the heat stability and the impact resistance of the polycarbonate resin can be improved without damaging appearance thereof by blending the specific low-density and silane-modified polyethylene resin with the polycarbonate resin. COPYRIGHT: (C)2011,JPO&INPIT
Patent•
24 Aug 2011
TL;DR: In this article, an epoxy group in the bisphenol A liquid epoxy resin and a hydroxyl group in Hydroxychloroethylene-vinyl acetate undergo a grafting reaction to form a hydroxychloroencodericene-vineylenevinyl acyclic acid (HCEA) modified bisphensol A epoxy resin compound, which can be widely applied to protective coating and anticorrosive coating.
Abstract: The invention discloses a hydroxychloroethylene-vinyl acetate modified epoxy resin compound and a preparation method thereof. Hydroxychloroethylene-vinyl acetate, bisphenol A liquid epoxy resin, boron trifluoride ether complexing compound, acetone and the like are used as raw materials. In an acetone solvent, under the action of a boron trifluoride ether complexing compound catalyst, an epoxy group in the bisphenol A liquid epoxy resin and a hydroxyl group in the hydroxychloroethylene-vinyl acetate undergo a grafting reaction to form a hydroxychloroethylene-vinyl acetate modified bisphenol A epoxy resin compound. The compound has the characteristics of adhesion of adhesive using the epoxy resin, hardness, rigidity, chemical resistance, corrosion resistance, quick dryness and the like; andmeanwhile, the epoxy resin has the characteristics of high toughness, combustion-supporting resistance, improved impact resistance, improved crispness and reduced cracking phenomenon. The compound can be widely applied to protective coating and anticorrosive coating for paper, metal, building material and the like.
Patent•
09 Feb 2011
TL;DR: In this paper, a sheet for forming a hard coating and a method of formation is described. But the method is not described in detail, except that it can be applied on the surface of various molded products, including resin molded products or wood products.
Abstract: The present invention relates to a sheet for forming a hard coating and a method of formation. The present invention can provide transfer material or a surface protection sheet having high refractive index and superior physical properties, such as hardness, friction resistance, abrasion resistance, chemical resistance, transparency, luster, and the like, for forming a hard coating on the surface of various molded products, including resin molded products or wood products, and a method for forming a hard coating from such transfer material or surface protection sheets.
Patent•
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17 Nov 2011
TL;DR: In this article, the authors proposed an ink for inkjets having excellent chemical resistance, forming a resistor of low resistance, and having particularly excellent preservation stability, which includes an epoxy resin, an oxetane compound, a copolymer having a structural unit derived from styrene, and an acid anhydride compound having a polymerizable double bond.
Abstract: PROBLEM TO BE SOLVED: To provide an ink for inkjets having excellent chemical resistance, forming a resistor of low resistance, and having particularly excellent preservation stability.SOLUTION: The ink for inkjets includes: (A) an epoxy resin; (B) an oxetane compound; (C) a copolymer having a structural unit derived from styrene, and a structural unit derived from an acid anhydride compound having a polymerizable double bond in which the acid anhydride derived from the acid anhydride compound in the structural unit is alcohol-modified; (D) carbon black; and (E) a solvent.
Patent•
27 Apr 2011
TL;DR: In this article, a new polymer blue-ray engraving material, which consists of aqueous solution of modified SBQ (special bar quality) resin, epoxy resin, a curing agent, a photo polymerization initiator and the like.
Abstract: The invention discloses a new polymer blue-ray engraving material, which consists of aqueous solution of modified SBQ (special bar quality) resin, epoxy resin, a curing agent, a photo polymerization initiator and the like. Organosilicon modified polyurethane is adopted to generate synergy with a colloid, and the acid and alkali resistance of a film is improved; and vinyl acetate and acrylate copolymer is introduced and is coordinated with long-chain ester monomers, multi-functional active monomers and modified polyurethane to form an interpenetrating network/semi-interpenetrating network, so that the mechanical properties of the film are obviously improved, the chemical resistance and mechanical wear resistance of photoresists are improved and the adhesion of the photoresists to a base material is improved. Without action of chromium ions, the new polymer blue-ray engraving material has high photosensitivity to blue-ray laser dotting instant exposure, good cross-linking curing performance, and the water development fastness meeting the engraving requirement, has good printing fastness after high-temperature curing, and has good application prospect.
Patent•
15 Sep 2011
TL;DR: In this paper, the halfconductive composite resin includes a carbon black dispersion polyamide resin formed by dispersing carbon black in a polyamide resin having an element ratio C/N of nitrogen and carbon by elemental analysis of 7 or more and represented by general formula (I) or (II) and polyvinylidene fluoride resin.
Abstract: PROBLEM TO BE SOLVED: To provide a half-conductive composite resin having wear resistance, chemical resistance and resistance stability. SOLUTION: The half-conductive composite resin includes a carbon black dispersion polyamide resin formed by dispersing carbon black in a polyamide resin having an element ratio C/N of nitrogen and carbon by elemental analysis of 7 or more and represented by general formula (I) or (II) and a polyvinylidene fluoride resin. COPYRIGHT: (C)2011,JPO&INPIT
TL;DR: In this article, the additive effect of comonomers on percentage grafting, properties and the behavior of fiber was explored for graft co-polymers with XRD, TGA, DTA, SEM and FTIR.
Abstract: Hibiscus sabdariffa (Roselle) is a cellulose rich (73.9%) waste bio-mass found in abundance through-out the world. It has light weight and high tensile strength that promotes its use as backbone for graft copolymerization. Various reaction parameters for the graft copolymerization were optimized to use it with effective monomer individually and then in binary vinyl monomeric mixtures, to explore the additive effect of comonomers on percentage grafting, properties and the behavior of fiber. The graft co-polymers were characterized by XRD, TGA, DTA, SEM and FTIR techniques and evaluated for physico-chemical changes like moisture absorption, swelling behavior, dye uptake studies and chemical resistance. With increase in percentage grafting, the percentage crystallinity, crystallinity index, hydrophilicity were reduced whereas an increase in physico-chemico-thermal resistance, hydrophobicity, miscibility with organic solvents improved.