Showing papers on "Chemical resistance published in 1986"

Transparent, impact-resistant, thermoplastic resin composition having excellent chemical resistance and process for producing same

Abstract: A thermoplastic resin composition obtained by graft-polymerizing 95 to 50 parts by weight of a monomer mixture comprising a vinyl aromatic compound monomer and an acrylic compound monomer and optionally a vinyl cyanide compound monomer in the presence of 5 to 50 parts by weight of a rubbery substance consisting of styrene-butadiene copolymers, characterized in that the rubbery substance comprises (A) 40 to 80% by weight of a styrene-butadiene copolymer having a number-average particle diameter of at least 0.05 μm and less than 0.2 μm, a gel content of 30 to 100% by weight and a bound styrene content of 10 to 40% by weight and (B) 60 to 20% by weight of a styrene-butadiene copolymer having a number-average particle diameter of 0.2 to 3 μm, a gel content of 10 to 80% by weight and a bound styrene content of 10 to 40% by weight and the total content of the components (A) and (B) in the rubbery substance is at least 80% by weight. Said thermoplastic resin composition is superior in chemical resistance, transparency, impact resistance and product appearance.

Coil coating paint composition

Abstract: A coil coating composition consisting essentially of (A) a binder component comprising a mixture of a linear polyester resin and a branched polyester resin, having a hydroxyl value of 40 to 90, and (B) a crosslinking component selected from melamine resin, at least part of which is methyl methylolated melamine, or isocyanate compound. Said polyester resins are herein defined. The coating composition is useful in a coil coating and results in a coating with excellent properties in respect of hardness, bending processability, fastness to boiling water, weather resistance, chemical resistance, marker stain resistance and the like.

Epoxy resin coating composition

Abstract: An epoxy resin coating composition comprising a rubber-modified epoxy resin which is obtained by reacting an epoxy resin with a carboxyl group-containing butadiene-acrylonitrile rubber, a phenoxy resin, a metal powder, a curing component, and an organic solvent. This composition is especially useful as a coating for fuel tanks particularly, gasohol fuel tanks. The cured coating from the composition has excellent properties of heat resistance, chemical resistance, corrosion resistance, flexibility and weldability.

Anti-skid coating composition

Abstract: There is disclosed a protective coating composition suitable for application to surfaces of concrete, wood or metal to provide each surface with increased skid and chemical resistance. The composition comprises a blend of hydraulic cement in the range of 5 to 18 wt., 0.5 to 6.0 wt. % polyvinyl acetate, the balance silica sand, the blend having admixed therewith a solution comprised 10 to 70 wt. % of a vinyl acetate-ethylene copolymer, the remainder water.

Novel fluorovinyl ether and copolymer containing same

Abstract: NEW MATERIAL:The compound of formula I (X is H or halogen; Y is F or CF3; m is 0-5, n is 0-2). EXAMPLE:Perfluoro(6,6-dihydro-6-iodo-3-oxa-1-hexene). USE:Monomer for copolymer. Useful for the modification of a polymer containing ethylenic unsaturated compound. It can be used effectively as a general molding material, sealant, adhesive, paint, etc., which is to be applied to a part necessitating heat-resistance, oil-resistance, chemical resistance, solvent resistance, etc. PREPARATION:The compound of formula I wherein Y is CF3 can be produced by reacting the acyl fluoride of formula II with a lower alcohol such as methanol, reacting the resultant ester of formula III with an alkali metal hydroxide of formula MOH (e.g. NaOH) to obtain the salt of formula IV and heating the salt at 150-250 deg.C under reduced pressure or in an inert gas atmosphere such as N2.

A coil coating paint composition

Abstract: A coil coating composition consisting essentially of (A) a binder component comprising a mixture of a linear polyester resin and a branched polyester resin, having a hydroxyl value of 40 to 90, and (B) a crosslinking component selected from melamine resin, at least part of which is methyl methylolated melamine, or isocyanate compound. Said polyester resins are herein defined. The coating composition is useful in a coil coating and results a coating with excellent properties in respect of hardness, bending processability, fastness to boiling water, weather resistance, chemical resistance, marker stain resistance and the like.

Novel ring-opening polymer

Abstract: PURPOSE: To obtain a ring-opening-polymerized polymer having an intrinsic viscosity in a specified range, being excellent in heat resistance, transparency, chemical resistance, dielectric property, rigidity, etc., and suited for optical lenses, optical fibers, etc., by ring-opening-polymerizing pentacyclopentadecene. CONSTITUTION: Pentacyclopentadecene of formula I is subjected to ring-opening- polymerization in the presence of a polymerization catalyst (e.g., titanium tetrachloride or triethylaluminum). In this way, the purpose pentacyclopentadecene (or 1,4,5,8-dimethano-1,2,3,4,4a,4b,5,8,8a,9a-decahydro-9H-fluo-rene) ring-opening polymer mainly consisting of repeating units of formula II and having an intrinsic viscosity of 0.01W20dl/g (as measured in toluene at 25°C) can be obtained. By saturating the double bonds of this ring-opening polymer by hydrogenation, the thermal degradation resistance, light degradation resistance, etc. can be further improved. COPYRIGHT: (C)1988,JPO&Japio

Photosetting resin composition

Abstract: PROBLEM TO BE SOLVED: To provide a photosetting resin composition which has excellent transparency, chemical resistance, alkali resistance, heat resistance and water resistance as well as high compressive strength, and excellent process margin, sensitivity and developing property and which form a patterned coating film to be used for a display element. SOLUTION: The photosetting resin composition contains (A) an alkali-soluble resin obtained by subjecting a copolymer of maleic acid anhydride and a compound having an ethylenically unsaturated bond to the ring-opening reaction of the acid anhydride group in the maleic acid anhydride structural unit with a compound having an amino group, and further heating to produce an imide structure; (B) a resin having an epoxy group; (C) a compound having an ethylenically unsaturated bond; (D) a photopolymerization initiator; and (E) a solvent. The coating film made of the photosetting resin composition shows significantly high heat resistance compared to a conventional film. Therefore, when the film is used as a spacer, the film has little change in the thickness by heating in a succeeding process (for example, calcining an alignment film ) and causes little change or fluctuation of the cell gap for laminating a liquid crystal panel. This significantly reduces the rejection rate of the liquid crystal panel. COPYRIGHT: (C)2004,JPO&NCIPI

Scratch processing material

Abstract: PURPOSE: To maintain stable scratch effect for a long time with less wear and without clogging, by causing a pore structure of a grindstone composed of abrasive grains integrated by a binding agent to contain epoxy resin. CONSTITUTION: Epoxy resin 4 is contained in a pore structure of a grindstone composed of abrasive grains 6 integrated by a binding agent 7. A scratch processing material thus obtained is stabilized by containing a small amount of the epoxy resin 4 in the pore structure in a soft structure and it has chemical resistance and heat resistance. As a result, very durable scratch which has not been ever effected can be performed so that fiber products with a nap property and feeling of high quality can be obtained. In particular, it is strong against thermal alkali and excellent for chemical resistance and heat resistance. As a result, it can be effectively applicable to an amount of alkali reduction processing for fibers of high crystal and high strength which is difficult to produce nap such as polyester. COPYRIGHT: (C)1988,JPO&Japio

Molded body of adsorbent

Abstract: PURPOSE:To make the regeneration of the titled adsorbent easy and to improve the deterioration resistance and chemical resistance by using polyurethane as a binder for molding the adsorbent CONSTITUTION:A molded body of adsorbent is obtained by molding an adsorbent such as silica gel and zeolite by using polyurethane or the polyurethane added with solvent as a binder The molded body is not crushed and pulverized and the adsorption performance is not deteriorated and also the regeneration is easy and the chemical resistance is excellent

Thermostatic cell for automatic chemical analyzer

Abstract: PURPOSE:To elevate the heat conductivity, wear resistance and chemical resistance, by forming a protective layer on the surface of a reaction tank using material having a covalent bond and with a high Debye temperature. CONSTITUTION:To keep the thermostatic cell constant in the temperature, a Peltier element 4 is energized electrically to heat a box 2a by a Peltier effect. As the box 2a is heated, the heat is transmitted to the inside of a reaction tank 2 via coated layer 3, when the tank 2 is heated with a better heat conductivity because of a higher Debye temperature in the layer 3. The layer 3 is also highly stable chemically because of it is made of the material having a covalent bond. This provides an excellent wear resistance to a metal cassette 10 on the surface of the layer 3 and a better chemical resistance to various chemicals.

Modified silica-coated lead chromate pigment composition and its preparation

Abstract: PURPOSE:To obtains the titled composition having decreased flying tendency and improved light resistance, chemical resistance and heat resistance, by adding an organic silicon compound to a silica-coated lead chromate pigment, mixing and heating the mixture in the presence or absence of water or organic solvent, and if necessary, drying the product. CONSTITUTION:The objective composition can be produced by adding (A) an organic silicon compound such as (un)modified silicone oil to (B) a silica-coated lead chromate pigment prepared by applying continuous film of amorphous silica to the surface of lead chromate pigment particle, uniformly mixing the mixture under heating in the presence or absence of (C) water or an organic solvent, and if necessary, drying the product.

Clinical thermometer made of glass with resin film coating

Abstract: PURPOSE:To elevate an impact resistance and chemical resistance without reducing a thermal conduction by making a protective film coating with painting >=three layers of varying sort of high molecular compound respectively on the surface of the outer cylindrical pipe CONSTITUTION:Plural layers of protective film coatings are formed by a different sort of high molecular compound respectively on the surface of the outer cylindrical pipe 4 of a clinical thermometer made of glass The film of a silane high molecule compound having an elasticity with good adhesion to a glass and a high adhesive strength with 2nd layer 7 is formed on 1st layer 6 adjoining the surface of the outer cylindrical pipe 4 made of glass A polyurethane polymeric compound film having high tenasity and strong impact resistance is formed on 2nd layer 7 and vinyl chloride polymeric compound film having high safety on Food Sanitation Law and chemical resistance and of soft quality with strong surface hardness on 3rd layer 8 respectively

Porous cured material of phenolic resin

Abstract: PURPOSE:A cured material of phenolic resin providing an improved lightweight porous material having improved heat resistance, chemical resistance, mechanical strength, etc., having specific extremely thin open cells. CONSTITUTION:A cured material of phenolic resin having open cells with apparent density. The porous material is a film or plate. The cured material is produced by preparing a precondensate of a phenolic hydroxyl group-containing aromatic hydrocarbon compound ( phenol, cresol, etc.) and an aldehyde, making a uniform aqueous solution the precondensate and an inorganic salt (zinc chloride), curing it under heating while suppressing evaporation of water, and removing the inorganic salt.

Antistatic fluororesin paint

Abstract: PURPOSE:To obtain the titled paint having excellent heat resistance, cold resistance, chemical resistance, solvent resistance, antistatic properties and colorability, which comprises a fluororesin as a base resin and an electrically conductive white inorganic compound powder. CONSTITUTION:A base resin comprising a fluororesin which is soluble in a relatively wide variety of solvents and can possess a wide range of curing characteristics from a cold curing to a short-time curing at a temp. as high as 300 deg. by selecting a curing agent is incorporated with 25-65wt% electrically conductive white inorganic compound powder such as a powder obtained by doping a ZnO powder, SnO2 powder or TiO2-SnO2 composite powder having a particle diameter of 0.1-1.0mu and a specific volume resistance of 300OMEGAcm or lower with a different metal under a pressure of 100kg/cm by means of a homodisper etc. to obtain the titled paint having a resistivity of 10 -10 OMEGAcm which is excellent in both paint and coating film properties.

Production of colored acrylonitrile resin powder

Abstract: PURPOSE:To produce the title resin powder excellent in color development, light resistance and chemical resistance and applicable to a pigment, by dyeing a specified acrylonitrile resin powder with a cationic dye and crosslinking the powder with an aldehyde compound. CONSTITUTION:An acrylonitrile resin powder having at least 50mmol/kg polymer of acidic groups, comprising a monomer mixture based on acrylonitrile and an amide group-containing ethylenically unsaturated monomer (e.g., acrylamide) is dyed with a cationic dye and is crosslinked with an aldehyde compound (e.g., form-aldehyde). This colored power is excellent in color development, light resistance and solvent resistance, can be used widely as a pigment for various paints and, when kneaded with a paint or an ink, can improve its storage stability greatly.

Protective component for enhancement of chemical resistance of paper

Abstract: PURPOSE:To obtain a protective component which enhance chemical resistance such as oil resistance by polymerizing a water-soluble vinyl monomer having a weight ratio of specific net component in the existence of high polymer latex having lower than 60 degC of glass transition point CONSTITUTION:In the existence of high polymer latex (A) at lower than 60 degC of glass transition point, at least single type of water-soluble vinyl monomer (B) which is polymerized by polymerization method which polymerizes water-soluble vinyl monomer, eg radical polymerization or redox polymerization at a weight ratio of A to B (solid) for 3:97-90:10, preferably 5:95-80:20 in the existence of water Thus a component for enhancing and protecting the chemical resistance of paper After polymerization, the afore-mentioned component obtained is neutralized by caustic soda, caustic potash, ammonia, hydrochloric acid, sulfuric acid, nitric acid, etc As a result, the component can be stabilized so that it may withstand its long preservation

Novel diamine, production thereof, and epoxy curing agent

Abstract: NEW MATERIAL:A compound shown by the formula I (Y and Z are -SO2-, or -CO-; m is 0-50; n is 0 or 1; m+n>=1). EXAMPLE:A compound shown by the formula II. USE:An epoxy curing agent, further a raw material for high polymers, drugs, agricultural chemicals, etc., having performance such as high heat resistance, high elongation, impact resistance, chemical resistance, water resistance, high strength, etc. PREPARATION:A compound shown by the formula III (M is alkali metal) is reacted with a compound shown by the formula IV (X is F, Cl, Br, or I) in a solvent containing a highly polar solvent, to give a compound shown by the formula V. This compound is reacted with a nitrobenzoic acid halide in the presence of an alkali compound such as pyridine, etc. optionally in an organic solvent such as benzene, etc., to synthesize a nitrobenzoic acid ester, the nitro group is reduced by the use of a metallic catalyst at normal pressure or under hydrogen pressure into the amino group, to give a compound shown by the formula I.

Novel aromatic diamine, production thereof and epoxy curing agbent

Abstract: NEW MATERIAL:A compound shown by the formula I (Y is -SO2- or -CO-; Z is -C(CH3)2, -O-, or -CH2; n is 1-50). EXAMPLE:A compound shown by the formula II. USE:An epoxy curing agent, or a raw material for drugs, agricultural chemicals, etc., having performance such as high heat resistance, high elongation, impact resistance, chemical resistance, water resistance, high strength, weather resistance, etc. PREPARATION:A compound shown by the formula III (X is F, Cl, Br, or I) is reacted with an alkali metallic salt of bisphenol A, dihydroxydiphenylmethane, or dihydroxyphenyl ether in a polar solvent containing a highly polor solvent, to give a compound shown by the formula IV. This compound is reacted with a nitrobenzoic acid halide in the presence of an alkali compound such as pyridine, etc. optionally in an organic solvent such as benzene, etc., and the nitro group is reduced into the amino group by the use of a metallic catalyst at normal pressure or under hydrogen pressure, to give a compound shown by the formula I.

Optical recording medium

Abstract: PURPOSE:To improve heat resistance, moisture resistance, chemical resistance, etc. by forming a protective layer of a film consisting of specific copolymerized polyester stretched at least uniaxially. CONSTITUTION:An optical recording layer is provided on a base material and further a protective layer is provided thereon. The protective layer is constituted of the film of the copolymerized polyester of <=5cal/g heat fusion of crystal which is stretched at least uniaxially and has <=100mmu retardation value. Glass or acrylic resin, etc. are used for the base material. The good moisture resistance, heat resistance and chemical resistance and mechanical characteristics satisfactory for practicable use are thus obtd. without the deterioration of the recording and reproducing characteristics.

Novel diamine, production thereof and epoxy resin hardener

Abstract: NEW MATERIAL:The compound of formula I (X1-X4 are Cl or Br; Y is -CH2-, -SO2-, -O- or group of formula II; R is -H or -CH3; m and n are 0-50; m may be equal to n; m+n>=1; the position of the amino group may be ortho, meta or para) USE:An epoxy resin hardener It gives a cured resin having excellent heat- resistance, elongation, impact resistance, water-resistance, chemical resistance, flame-retardance, etc It is useful also as a raw material for the production of various polymers, raw material for agricultural chemicals or pharmaceuticals, or ultraviolet-absorber PREPARATION:The objective compound of formula I can be produced by reacting the halogenated diol compound of formula III with nitrobenzoic acid halide in a solvent such as benzene in the presence of an alkaline compound such as pyridine at a temperature between 0 degC and the boiling point of the solvent, and reducing the nitro group of the resultant nitrobenzoic acid ester to amino group using a metal catalyst (eg platinum supported on activated carbon)

Stabilized resin solutions

Abstract: A stabilized solution of a copolymer composed of an aminoalkyl acrylate unit or aminoalkyl methacrylate unit and an ethylenically unsaturated monomer unit, which is prepared by dissolving the copolymer in a mixed solvent containing a ketone solvent in a ratio of about 20 to 80wt% to the total solvent weight The stabilized solution possesses highly improved storage stability, thus standing long-term storage; it works well for paints, adhesives, primers, etc Its adhesive property to various substances is further improved by adding a coupling agent In addition, a paint film excellent in adhesion, water resistance, chemical resistance, and weatherproofness can be obtained by using both the stabilized solution of the base copolymer and either a compound having at least 2 acryloyl groups in each molecule, a blocked polyisocyanate compound, or an epoxy compound as a hardener

Surface coating material

Abstract: PURPOSE: A surface coating material, consisting of an organopolysilazane having a specific basic skeleton and capable of giving coats having improved heat, weather and chemical resistance, flexibility, rust preventing property, etc. CONSTITUTION: A surface coating material obtained by dehydrogenating and polymerizing an organosilazane expressed by formula I (R is H, 1W6C monofunctional hydrocarbon, 1W6C alkoxy, 1W6C alkenoxy, etc.; a>0, b≤2; 0