Showing papers on "Chemical resistance published in 1999"

Silicone resin-containing emulsion composition, method for making same, and article having a cured film of same

Abstract: A silicone resin-containing emulsion composition is prepared by emulsion polymerizing a solution containing a water-insoluble silanol group-bearing silicone resin and a radical polymerizable vinyl monomer and substantially free of an organic solvent. The emulsion may further contain a film-forming assistant having a boiling point of at least 100° C. and soluble or uniformly dispersible in water. The emulsion can be coated and cured into a film having mar resistance, weather resistance, and chemical resistance.

Fluorochemical adhesive material and laminate made with the same

Abstract: A fluorochemical adhesive material comprising a fluorinated ethylenic polymer which has carbonate groups and/or carbonyl halide groups at the terminals or in the side chains of the polymer chain, the total number of the carbonate and/or carbonyl halide groups being 150 or larger per 1x106 carbon atoms of the main chains. The material can directly tenaciously adhere to substrates such as metals, glasses, and resins while retaining excellent properties of fluoropolymers, such as chemical resistance, solvent resistance, weatherability, and fouling resistance.

Water-based surface-treating agent for metallic material

Abstract: A water-based surface-treating agent for metallic materials which gives a film highly satisfactory in corrosion resistance, blackening resistance, wet secondary adhesion to topcoatings, low-pollution characteristics (amount of fixed chromium), chemical resistance (especially acid resistance and alkali resistance), etc., while retaining the intact practical liquid stability of conventional chromate-containing resinous coating agents. The water-based surface-treating agent comprises a synthetic resin emulsion and hexavalent chromium ions and has a pH of 5 or lower, the synthetic resin emulsion being one obtained by emulsion-polymerizing the following ingredients using a nonionic polymerizable emulsifier and a nonionic nonpolymerizable emulsifier: (1) an ethylenic carboxylic acid, (2) a functional acrylic monomer having at least one of N-((un)substituted methylol)carbamoyl, phosphonate, alkoxy, cyano, and carbamoyl groups, and (3) a third monomer which is different from the ingredients (1) and (2) and forms the skeleton of the copolymer to be obtained.

Waterborne coating having improved chemical resistance

Abstract: A waterborne coating having improved chemical resistance produced from a composition containing a binder resin having post crosslinking groups, an associative thickener having post crosslinking groups and an associative dispersant having post crosslinking groups.

Aqueous dispersion, its production method, and its use

Abstract: An aqueous dispersion of a thermoplastic resin which is capable of forming a coating exhibiting excellent water resistance, oil resistance, chemical resistance and adhesion to non-polar materials as well as its production method and its applications are provided. More particularly, there is provided an aqueous dispersion comprising (A) a thermoplastic resin, (B) a salt of a higher fatty acid, and (C) water, wherein solid content is uniformly dispersed; a method for producing such an aqueous dispersion by melt kneading (A) a thermoplastic resin and (B′) a higher fatty acid and/or an ester thereof, and adding a basic substance and water to the resulting melt kneaded product for neutralization and/or saponification to thereby uniformly disperse of the solid content in the aqueous phase; a thermal transfer ink comprising (A′) an ethylene-vinyl compound copolymer and (B) a salt of a higher fatty acid; and a thermal transfer recording medium having a thermal transfer layer prepared by coating and drying the thermal transfer ink on the substrate.

Aqueous coating composition for automotive internal trim material

Abstract: PROBLEM TO BE SOLVED: To obtain the subject aqueous coating composition capable of one-coat finishing on a plastic material without surface treatment (pretreatment) such as a polyolefin material and excellent in chemical resistance. SOLUTION: This coating composition essentially comprises a resin emulsion prepared by formulating (A) an emulsion of a chlorinated polyolefin resin with a chlorine content of 22-25 solid wt.% and a weight-average molecular weight of 60,000-80,000 with (B) an emulsion of a pure acrylic resin with a glass transition temperature of ≥40°C; wherein the solid weight ratio of A/B is (25:75) to (30:70). COPYRIGHT: (C)2001,JPO

Back protective sheet for solar battery module and solar battery module using the sheet

Abstract: PROBLEM TO BE SOLVED: To provide a back protective sheet which is excellent in strength, weather resistance, heat resistance, water resistance, light resistance, wind pressure resistance, snowfall resistance, chemical resistance, humidity resistance, antifouling property, light reflection property, light diffusion property, design characteristic, and other characteristics, improves remarkably humidity resistance particularly preventing invasion of water content, oxygen, etc., restrains deterioration of these characteristics in long term to a minimum, is rich in durability extremely, is excellent in protecting ability of these characteristics and constitutes a safe solar battery module at a lower cost, and stably provide a solar battery module using the back protective sheet. SOLUTION: In this back protective film for a solar battery module, a vapor deposition film of inorganic oxide is formed on a single side of a base material film, a coating film formed of composition composed of condensation polymerization substance which is formed by hydrolyzing silicon compound is formed on the vapor deposition film of inorganic oxide, and colored polyester based resin layer is formed on a surface of the coating film of the base material film on which the vapor deposition film of inorganic oxide and the coating film are formed. On the other side of the base material film, a resin layer containing ultraviolet ray absorbent is formed. The battery module uses the back protective film.

Flame-retardant vinyl chloride resin molded product

Abstract: PROBLEM TO BE SOLVED: To obtain a flame-retardant vinyl chloride resin molded product capable of clearing FM specification (flame-retardant test) of a clean room material and having practical strength, chemical resistance and corrosion resistance. SOLUTION: This flame-retardant vinyl chloride resin molded product comprises 100 pts.wt. vinyl chloride resin and 5-50 pts.wt. titanium oxide or comprises 100 pts.wt. vinyl chloride resin and 5-50 pts.wt. titanium oxide and 5-30 pts.wt. chlorine-capturing compound compounded so that total content of titanium oxide and the chlorine-capturing compound is <=60 pts.wt. based on 100 pts.wt. vinyl chloride resin or comprises 100 pts.wt. vinyl chloride resin and 5-50 pts.wt. titanium oxide and 2-30 pts.wt. one or two or more kinds of compounds selected from silica, alumina, aluminum silicate and talc as inorganic auxiliaries compounded so that total content of the titanium oxide and inorganic auxiliaries is <=60 pts.wt. based on 100 pts.wt. vinyl chloride resin.

Endless tubular semiconductive aromatic polyimide film and its manufacture

Abstract: PROBLEM TO BE SOLVED: To provide an endless tubular semiconductive film of superior resistance, chemical resistance and mechanical properties and also of superior electric resistance characteristics. SOLUTION: An aromatic polyimide film is composed of an aromatic polyimide and a conductive carbon black containing 10-25% volatile component containing a pH 4 or less volatile acid component as a main component. In that case, a combination of Tg 210-350 deg.C polyimide and the surface oxidized carbon black is preferable because the film, in which the difference between the surface resistance value and the volume resistance value of the film is within two digits and the fluctuation of the surface resistance value to the charge application voltage is within 0.5 digits, can be easily obtained. The film is manufactured preferably by utilizing, for instance, the centrifugal casting. The film is extremely effectively used as, for instance, an intermediate transfer belt for a color copier.

Reactive particle, and curable composition and cured matter containing the same

Abstract: [PROBLEMS] To provide excellent cured product productivity and excellent hardness, scratch resistance, abrasion resistance, low curl, adhesion and chemical resistance on the surface of various substrates. In particular, the present invention provides reactive particles used in a resin composition capable of forming a coating film (cured film) having excellent chemical resistance, a resin composition containing the particles, and a cured product. (A) oxide particles of at least one element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony and cerium; A radical having a radically polymerizable unsaturated group and a hydrolyzable group; 1) an organic compound (b1) and at least one group selected from the group consisting of an oxetane group, a 3,4-epoxycyclohexyl group, and an epoxy group in the molecule, and a second compound having a hydrolyzable group. A reactive particle obtained by binding the organic compound (b2) of the above.

Photocurable resin composition and method for forming irregular pattern

Abstract: PROBLEM TO BE SOLVED: To obtain a photocurable composition capable of forming a coating film excellent in strengths, heat resistance, scratch resistance, water resistance, chemical resistance, and adhesion to substrates by using a urethane-modified acrylic resin, a mold release, and a urethane acrylate or a polyester acrylate as the essential components. SOLUTION: A urethane modified acrylic resin represented by the formula is used. In the formula, five R1 s are each independently hydrogen or methyl; R2 is a 1-16C hydrocarbon group; X and Y are each a linear or branched alkylene; (l) is an integer of 20-90; (m) is an integer of 0-50; (n) is an integer of 10-80; and (o) is an integer of 0-20; provided that the sum of (l), (m), (n), and (o) is 100. The amounts of the mold release and the urethane acrylate or the polyester acrylate are each about 0.1-50 pts.wt. per 100 pts.wt. resin of the formula. It is desirable that the molecular weight of the resin of the formula is 10,000-200,000. The mold release used is a modified silicone oil, especially desirably, a reactive silicone oil.

Resin composition having excellent vibration-damping properties and molded article made thereof

Abstract: An unsaturated polyester resin composition having excellent vibration-damping properties, comprising an unsaturated polyester resin (A) having a glass transition temperature (Tg) of 0° C or more and less than 60° C In the composition, the unsaturated polyester resin (A) may be blended with an unsaturated polyester resin (B) having a glass transition temperature (Tg) of 150° C or more and less than 200° C or an unsaturated polyester resin (C) having a glass transition temperature (Tg) of 200° C or more Further, the composition may contain an elastomer (D) having a glass transition temperature (Tg) of −50° C or more and less than 100° C Since the unsaturated polyester resin composition has excellent vibration-damping properties and moldability in a wide temperature range, it is very useful to provide molded articles such as vibration-damping structural components, especially automobile engine-related components, having excellent heat resistance and chemical resistance as well as having excellent vibration-damping properties and moldability

Polyphenylene sulfide resin composition and molded form

Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition (PPS resin composition) for multilayer blow-molded form, excellent in film thickness controllability, moldability, hot water resistance, hot antifreeze resistance, chemical resistance, heat resistance, surface smoothness and adhesivity, and to obtain a multilayer blow-molded form by the use of this composition. SOLUTION: This PPS resin composition is obtained by compounding (A) 100 pts.wt. of a polyphenylene sulfide resin with (B) 20-80 pts.wt. of a polyamide resin and (C) 20-80 pts.wt. of an olefin-based polymer. This composition has an MFR of <=100 g/10 min which is determined in accordance with the procedure specified in the JIS K-7210 at 315.5 deg.C under a load of 5 kg for a residence time of 5 min.

Low staining water base coating resin composition

Abstract: PROBLEM TO BE SOLVED: To provide water base coating resin compositions with improved durabilities of weatherability, chemical resistance, water resistance and the like and with ameliorated low staining properties as well. SOLUTION: A low staining water base coating composition comprises (a) an emulsion of an organic synthetic resin, (b) a coupling agent, and (c) a hydrophilicity-imparting organic compound having a reactive group with the coupling agent (b) which excludes component (a). The reactive group which the hydrophilicity-imparting compound has is preferably a hydroxyl group, a carboxyl group, a carbonyl group, an amide group, a glycidyl group or a silanol group.

Chemical Resistance and Corrosion, and Ion Release

Abstract: Glass is normally regarded as a chemically inert material with high corrosion resistance in comparison to other materials. Nevertheless, chemical reactions between the glass and the media in contact (in particular if they are liquid) will occur. The extent of these reactions depends on different parameters, such as temperature, time, type of glass, pH value of the contacting medium, etc. [5.1–4].

Solvent-free or aqueous coating with high chemical resistance

Abstract: Coatings are obtained by applying a solvent-free and/or aqueous coating material containing polymer particles, evaporating unbound water and bonding the particles by melting. A process for the production of a solvent-free and/or aqueous coating system, in which the coating material contains particles of polymer(s) which are used with free-flowing binder(s) and/or in water and optionally with fillers, pigments, effect particles and additives.The system thus obtained is applied, the unbound water is evaporated and the polymer particles are bonded together by a melting process.

Photocurable resin composition and formation of irregular pattern

Abstract: PROBLEM TO BE SOLVED: To obtain a resin composition capable of forming a coating film excellent in strengths, heat resistance, scratch resistance, water resistance, chemical resistance, and adhesion to substrates by using a urethane-modified acrylic resin, a mold release, and a compound selected from among a polyfunctional monomer containing an alkylene oxide structure or a specified- structure skeleton in the structure as the essential components SOLUTION: This composition essentially consists of 100 ptswt urethane- modified acrylic resin represented by the formula (wherein R1 is H or methyl; R2 is a 1-16C hydrocarbon group; X and Y are each a linear or branched alkylene; and l is 20-90, m is 0-50, n is 10-80, and o is 0-20, provided that the sum of l, m, n, and o is 100); 01-50 ptswt mold release; and 1-50 ptswt polyfunctional monomer containing in the structure an alkylene oxide chain or a skeleton of a structure represented by formula II (wherein R1 is a 2-8C linear or branched alkylene; and n is 20 or smaller A coating film made from the composition has the property of following the flexibility and expansion/ contraction of the substrate

Crosslinking with malonate blocked isocyanates and with melamine resins

Abstract: Automotive clearcoats with improved acid etch resistance are being formulated using a combination of a dialkyl malonate blocked polyisocyanate, a melamine crosslinker, and an acrylic polyol,1,2 These coatings contain lower levels of melamine crosslinker compared to conventional acrylic/HMMM systems and show excellent acid etch resistance. We explored the reaction mechanism of this complex crosslinking system and found explanations for the good chemical resistance properties.

Water-based treatment agent for metallic material surface

Abstract: PROBLEM TO BE SOLVED: To highly satisfy corrosion resistance and blackening resistance of completed coating layer as well as water-resistant secondary adhesion, low pollution properties (chromium fixation rate), chemical resistance (particularly resistance to acid or alkali) without practical loss of the liquid stability of conventional chromate-containing resin film-forming agents. SOLUTION: This treatment agent is a synthetic resin emulsion which contains a synthetic resin emulsion and hexa-valent chromium ion, has a pH of <=5 and is prepared by subjecting the following components to emulsion polymerization using a nonionic polymerizable emulsifier and a nonionic non- polymerizable emulsifier: 1) an ethylenically unsaturated carboxylic acid; 2) a functional acrylic monomer bearing at least one functional group among N-non-substituted, or substituted methylol-carbamoyl group, phosphonic group, alkoxy group, cyano group and carbamoyl group; and 3) a third monomer that is different from (1) and (2) and forms the skeleton of the resultant copolymer.

Rubber-modified thermoplastic resin

Abstract: PROBLEM TO BE SOLVED: To obtain a rubber-modified thermoplastic resin with excellent impact resistance, weatherability, appearance after molded, chemical resistance, scratch resistance and slidability. SOLUTION: This rubber-modified thermoplastic resin with a graft percentage of 10-100% and the intrinsic viscosity [η] of methyl ethyl ketone solubles of 0.2-0.8 dL/g, is obtained by graft polymerization of at least one monomer component selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and other vinyl monomers copolymerizable therewith in the presence of (A) a rubbery polymer >=70 deg.C in melting point Tm composed of ethylene, a 3-20C α-olefin and a non-conjugated diene in the weight ratio of (5-95):(95-5):(0-30) and (B) a 2nd rubbery polymer <70 deg.C in melting point Tm or with no Tin in the weight ratio A/B of (10-90):(90-10).

Bowl integrated counter

Abstract: PROBLEM TO BE SOLVED: To provide a bowl integrated counter made of artificial marble with excellent chemical resistance, alkali resistance and thermal shock resistance even by adopting injection molding manufacture coping with a small lot. SOLUTION: This bowl integrated counter consisted of a surface gel coating layer 3 and a base material layer 4 formed thereunder, to which a bowl part 2 and a planar part 1 and integrated, is prepared by vinyl ester resin. The base material layer 4 is composed of a bone material mixed with the vinyl ester resin. The gel coating layer is composed of glass beads dispersed and mixed with the vinyl ester resin so that the surface hardness is equal to or more than 3H.

Bituminous coating: effects of cashew nut shell liquid‐tannin resins

Abstract: Copolymer resins of peanut skin tannin extract, aldehydes and cashew nut shell liquid were prepared. The resins were blended with bitumen and used in formulating oleoresinous wood varnishes. The film properties of the varnishes were determined and the results showed that the gloss and scratch hardness of the films increased with increase in the quantity of cashew nut shell liquid/tannin‐aldehyde resins incorporated. The results also showed that the resins improved the chemical resistance of the varnish films. Varnish compositions containing 50:50 of bitumen and the resins gave films with satisfactory physical and chemical properties. The study showed that it is possible to formulate excellent oleoresinous wood varnishes using blends of bitumen and cashew nut shell liquid/tannin‐aldehyde resins.

Base material provided with highly durable photocatalyst film and production process of the same

Abstract: PROBLEM TO BE SOLVED: To produce a base material provided with a highly durable photocatalyst film which concurrently has photocatalytic activity, wear resistance and a chemical resistance by setting the ratios (wt.%) of the contents of the constituents, i.e., ZrO2, SiO2 and crystalline TiO2 in the photo catalyst film to values within specified ranges, respectively. SOLUTION: This base material is provided with a photocatalyst film formed by coating the surface of the base material with a coating liquid that is obtained by dispersing TiO2 crystals into a coating film forming component comprising ZrO2 and SiO2, wherein, in the photocatalyst film, the content ratio of the constituent ZrO2 used in the form of zirconium chloride, zirconium oxychloride, a chlorine-containing zirconium alkoxide, or the like, is set to 25-60 wt.%; the content ratio of the constituent SiO2 used in the form of an alkoxysilane such as tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane or methyltriethyoxysilane, is set to 15-50 wt.%; and the content ratio of the constituent TiO2 crystals is set to 25-45 wt.%. Thus, the objective base material provided with a highly durable photocatalyst film which concurrently has photocatalytic activity with respect to antifouling properties, hydrophilicity, or the like, wear resistance and chemical resistance, can be produced.

Coating of wood and coated wood

Abstract: PROBLEM TO BE SOLVED: To provide a method for coating a coating film good in adhesion and excellent in scuff resistance, impact resistance, wear resistance, chemical resistance, flexibility and water resistance on a surface of a wood without sucking into the wood, as a thick film and in a short time and to provide a coated wood coated by the method SOLUTION: A primer capable of impregnating is applied on the surface of the wood, then an isocyanate component A and a polyamine component B are applied with a high pressure two-pack mixing type spraying device in a mixing ratio in which the equivalent ratio of an amino group in the polyamine component B per isocyanate group in the isocyanate component A is 07-15, and the components are cured by reaction to form a polyurea resin coating film

Flame retardant vinyl chloride resin molded material

Abstract: PROBLEM TO BE SOLVED: To obtain excellent flame retardance, to lessen the amount of emission of smoke and the amount of production of corrosive gas, and also to obtain excellent weldability and chemical resistance, by having a base layer containing an inorganic flame retardant in polyvinyl chloride and a polyvinyl chloride surface layer laminated at least on one surface of the base layer. SOLUTION: A flame retardant vinyl chloride resin molded material 1 has a constitution wherein both surfaces of a base layer 2 containing inorganic flame retardant particles 3 in polyvinyl chloride resin are covered with surface layers 4 of a polyvinyl chloride layer not containing an inorganic substance substantially. The inorganic flame retaradant particles 3, which are contained in the base layer 2, hold down the burning velocity at the time when the molded material 1 burns and suppress production of corrosive gases which are produced in the burning, that is, the production of chlorine gas and hydrogen chloride gas produced with the thermal decomposition of polyvinyl chloride heated to a high temperature, thus giving flame retardance to the molded material 1 as a whole. On the other hand, the surface layer 4 of the polyvinyl chloride laminated at least on one surface of the base layer 2 gives excellent weldability and chemical resistance to the molded material 1.

Composition for color filter surface-protecting material

Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition excellent in heat resistance, chemical resistance, hardness, etc., curable in a short time by light or at a low temperature, excellent in productivity, applicable also to a substrate made of resin and useful for liquid display elements by including a specific homopolymer and a cation curing agent. SOLUTION: This composition comprises (A) a homopolymer of a compound such as glycidyl methacrylate having is H or a 1-5C alkyl; (n) is an integer of 1-5] and (B) a cation curing agent such as triphenylsulfonium hexfluorophosphate preferably in an amount of 1-10 pts.wt. based on 100 pts.wt. component A. The composition can be cured by heating at <=120 deg.C.

Antireflection material and polarizing film using it

Abstract: PROBLEM TO BE SOLVED: To heighten antireflection property and eliminate lowering of image contrast so as to obtain a clear image without a glare and to improve optical stability, wear resistance, chemical resistance and pollution resistance by specifying the critical surface tension of a surface layer. SOLUTION: Antireflection material 10 is so constituted as to have a roughened surface layer 12 on one face of a transparent base substance 11. A surface layer is formed on the surface of the roughened surface layer 12. In this case, correlation exists between pollution resistance and critical surface tension of the surface layer. The critical surface tension of the surface of a liquid crystal display or the like is therefore set to 20 dyne/cm or less. The oil dirt from a fingertip does not therefore adhere easily, and even in case of adhering, the dirt can be easily wiped off. As material for this surface layer, there are inorganic low reflection material formed by atomizing inorganic material in acrylic resin or epoxy resin, and organic low reflection material such as a fluorinated or silicone organic compound, thermoplastic resin, thermosetting resin and radiation-setting resin.

Polycyclic polymer and its production

Abstract: PROBLEM TO BE SOLVED: To obtain a polycyclic polymer excellent in moldability during injection molding, its balance between the moldability and mechanical strength and resistance to various solvents and chemicals. SOLUTION: This polymer has >=90 wt.% of repeating units expressed by the formula and a weight-average molecular weight(Mw) of 50,000 to 500,000, wherein, the ratio of Mw to number-average molecular weight(Mn) (Mw/Mn) is >=1.5 but <2.5. This polycylic polymer having hydrocarbon cycles in its main chain, is useful as a molding material or its raw material for various molded products, because of being excellent in transparency, heat resistance and chemical resistance and excellent in characteristics, such as low water and water vapor permeability.

Thermosetting coating composition

Abstract: PROBLEM TO BE SOLVED: To give abrasion resistance, chemical resistance, steam resistance and ultraviolet resistance by coating a hardenable coating composition comprising an acrylate, a silicone coating solution and a photo initiator, each being mixed in a specific ratio, on a thermoplastic resin substrate. SOLUTION: A coating composition includes not less than 75 wt.% of a brominated epoxy acrylate/acrylate monomer mixture, not more than 20 wt.% of a silicone coating solution and not more than 5 wt.% of a photo initiator and further, if necessary, an inorganic pigment particle such as a silica, a titanium oxide, etc., an antioxidant, a leveling agent, an antifoaming agent, etc. A radioactive ray is irradiated to the composition to form a hardened product. The photo initiator is selected from a 1-hydroxycyclohexylphenylketone, a 2,2-diethoxyacetophenone, a 4,4'-bis-(dimethylamino)benzophenone, a 2-hydroxy-2- methyl-1-phenyl-1-propanone etc.