Abstract: A molding material which contains a sinterable polymer and a wax as a binder and advantageously an ethylene/vinyl acetate copolymer, an organic peroxide, an azoester and an alcohol can be injection molded to give a molding, dewaxed without loss of dimensional stability of the molding and then sintered.

Abstract: A liquid curable resin composition comprising a dialkylpolysiloxane particles with at least two urethane bonds and/or urea bonds in the terminal groups. The resin composition exhibits superior shelf life in a liquid state and produces cured products having a slippery surface. It is suitable as a coating material for optical fibers, particularly as a ribbon matrix material and a bundling material.

Abstract: Room temperature stable aqueous dispersions of ketone resins are prepared by dissolving poly(ethylene oxide) resin and optionally surfactant in the aqueous medium mixed with the ketone resin. Coating formulations with these dispersions can contain additional co-dispersed components such as waxes, additional resins and/or pigments. The coating formulations can provide thermal transfer layers of thermal transfer ribbons which contain both wax and ketone resins.

Abstract: A liquid-absorbing material composition containing a crosslinking agent (component A), N-vinylcarboxamide copolymer (component B) having a functional group capable of crosslinking with the component A, water (component C), a water-soluble organic solvent (component D) and a plasticizer (component E), a molded liquid-absorbing material prepared from the composition, a method of manufacturing the molded liquid-absorbing material, and uses thereof are provided. The liquid-absorbing material composition has a high flowability, and gives a uniform continuous layer so that it can be directly molded readily into film- or sheet-shaped molded liquid-absorbing material without requiring secondary processing as in the case of conventional water-absorbing polymer.

Abstract: A novel thermosettable composition-of-matter is disclosed. One embodiment of the composition-of-matter includes a polymeric thermosettable ingredient having at least three acetoacetoxy-type functional pendant moieties as well as at least three acid-functional pendant moieties. Another embodiment of the composition-of-matter includes at least two polymeric thermosettable ingredients, one of which includes at least three acid-functional pendant moieties and the other of which includes at least three acetoacetoxy-type functional pendant moieties. The novel composition is characterized in that the acid-functional and acetoacetoxy-type functional pendant moieties crosslinkably-react together, when subjected to elevated-temperature conditions for a predetermined period of time, thereby producing a crosslinked polymeric network. The novel thermosettable composition-of-matter can be used "as is" if either of the polymeric thermosettable components is a "fluid" (i.e., is able to flow) at room temperature.

Abstract: This invention relates to a silicone release coating composition comprising (A) a diorganopolysiloxane having at least two alkenyl groups in each molecule, (B) an organohydrogenpolysiloxane having at least three silicon-bonded hydrogen atoms in each molecule, (C) a mixture of an alkynyl alcohol and an organosiloxane having at least one aliphatic triple bond-containing alkoxy group, and (D) a platinum group metal catalyst. The silicone release coating compositions of this invention have superior curability and storage stability at room temperature, and produce a uniform coating when used in thin film form on applicator rolls.

Abstract: The viscosity of a solvent is modified by thickening the solvent with a silicone latex. A silicone latex having a plurality of crosslinked polysiloxane particles is first prepared by mixing the siloxane polymer, a surfactant, and water; emulsifying the mixture to a gel phase; diluting the emulsion with water; adding a cure package (i.e., a catalyst, a crosslinker, or both, or a self catalytic crosslinker); and then without removing the water from the latex and after the particles of siloxane polymer in the latex have been cured, mixing the latex and solvent to thicken the solvent, forming viscous liquids, gels, and pastes. Water in the latex thickened solvent composition can be stabilized by adding a silicone polyether during mixing of the latex and the solvent.

Abstract: An improved polyurethane is prepared by reacting a diol component and an organic diisocyanate with critical selection of the amount of water in the reaction mixture and the diol component. The diol component is a long chain polyoxyethylene glycol optionally mixed with a low molecular weight polyoxyethylene glycol. A tough gel can be formed by mixing the polyurethane in a diol or triol and water solution. The tough gel can be used in burn and wound dressings, electroconductive pads, high slip materials and surgical implants. An optically clear gel can also be formed. Solutions and emulsions can be formed of the polymer and can be combined with fillers to form face creams and antiperspirants. A film can cover one side of the gel for burn and wound applications. The gel can be used in squeeze tubes and in spray cans in burn wound care dressings and industrial applications and in bags and containers for use in plastic surgery implants.

Abstract: This invention relates to pressure sensitive adhesive compositions which are obtained by a method comprising reacting a mixture of at least one polydiorganosiloxane, at least one silicone resin copolymer, at least one silanol condensation catalyst, and at least one solvent or plasticizer having a boiling point of at least 200.degree. C., to form a reaction product, and then adding an organic peroxide or azo compound to the resultant reaction product. The silicone pressure sensitive adhesives of this invention are useful in preparing articles such as pressure sensitive tapes, labels, emblems and other decorative or informational signs.

Abstract: Electrically conductive elements, such as imaging elements, can be prepared by applying electrically conductive coating compositions to a suitable support. The coating compositions include a polyaniline-protonic counter-ion complex in a first solvent that has certain Hansen solubility parameters, and a film-forming binder in a second common coating solvent. The total solids in the coating composition is less than or equal to about 10 weight %, and the weight ratio of the binder to the complex is at least about 1:1. Under these formulation conditions, the polyaniline protonic counter-ion complex is solubilized, rather than being in dispersed form, and is readily applied to form a thin, relatively transparent, electrically conductive film. Antistatic layers of photographic elements can be prepared in this manner.

Abstract: A coating composition prepared by mixing an organic solvent based coating composition with (1) a silicone compound having organofunctional group and hydrolyzable group in one molecule and containing a specified silicon structural unit, or (2) a silicone compound consisting of a partial cohydrolysis.cndot.condensation product of a silane mixture of alkoxysilane compound containing at least one organofunctional group selected from the group consisting of (meth)acryloyl group, vinyl group, haloalkyl group, amino group, epoxy group and mercapto group with tetraalkoxysilane compound.

Abstract: A method is disclosed for providing a friable polytetrafluoroethylene (PTFE) product that has particles of a desired size which are flowable and do not tend to agglomerate. To achieve this result, the PTFE starting material is handled at a temperature below 66.degree. F., and preferably below 55.degree. F., before irradiating. The PTFE starting material may be mixed with a wetting agent before irradiating to provide a product that has enhanced dispersibility. The source of radiation may include electron beam radiation, nuclear radiation, or radiation from a cobalt-60 (CO.sub.60) source.

Abstract: An adhesive composition comprising: a) a metal-chelate cross-linker; b) a polyurethane or diepoxy cross-linker; c) an acrylate base polymer; d) a stabilizer for the metal-chelate cross-linker; and e) a non-reactive organic solvent is provided. The adhesive composition is stable and high-performance. The stable adhesive composition is stored as a one-part system.

Abstract: An aqueous dispersion composition comprising a fluorine-containing melt-processable resin powder having an average particle size of 10 to 1000 .mu.m, a water-soluble solvent, a surfactant and water, and said fluorine-containing melt-processable resin powder being contained in an amount of 15 to 80 % by weight. Without generating cracks and pin holes, a thickness of coating film per one application can be increased more than 1 mm, and a total thickness can further be made thicker.

Abstract: Silicone gels are made by reacting an .tbd.Si--H containing polysiloxane with an alpha-olefin and an alpha, omega-diene. The reaction is conducted in the presence of a platinum catalyst and in the presence of a low molecular weight silicone oil. First, an .tbd.Si--H containing polysiloxane is grafted by long chain alkyl groups from the alpha-olefin onto the .tbd.Si--H containing polysiloxane, and then crosslinked with double bonds in the alpha, omega-diene, in the presence of the low molecular weight silicone oil. The formed silicone gel can then be crumbled into a silicone powder using mechanical force. When additional amounts of the low molecular weight silicone oil are added to the gel, and the silicone oil and the gel are subjected to shear force, a silicone paste can be formed.

Abstract: A water-based coating composition and methods of making and using the same are disclosed. It is suitable for coating a variety of substrates including polyolefinic substrates such as polypropylene, and operates without aromatic organic solvents.

Abstract: A vehicle masking material and method of use. The masking material in one embodiment includes a dextrin, a plasticizer, and water. The masking material may additionally include a surfactant. The masking material is applied to a surface which is to be protected from paint overspray or other coating processes, allowed to dry, and the surface is coated (e.g. with paint). After drying of the paint, or other coating, the masking material is removed by water washing.

Abstract: The present invention relates to solid compositions of polymers or copolymers of unsaturated carboxylic acids partially or completely neutralized, a process for the preparation thereof and the use thereof as thickening agents.

Abstract: An anti-fogging coating composition contains (a) an inorganic alkoxide and/or a hydroxyl group-containing polymer formed therefrom by hydrolysis and polycondensation, the inorganic alkoxide being represented by the formula (I):M(OR).sub.n (X).sub.a-n (I),wherein M is an inorganic element selected from the group consisting of Si, Al, Ti, Zr, Ca, Fe, V, Sn, Li, Be, B and P; R is an alkyl group; X is an alkyl group with or without functional groups or a halogen atom; a is a number representing the valence of M; and n is an integer from 1 to a; (b) a polyalkylene oxide, a weight ratio of the polyalkylene oxide to the inorganic alkoxide and/or the hydroxyl group-containing polymer being 100/1-100/150; (c) 0.5 parts by weight or less of an acid catalyst per 100 parts by weight of (a); (d) 0.

Abstract: Binders useful in photosensitive compositions contain units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt. % and is of the formula ##STR1## B is present in an amount of 10 to 35 wt. % and is of the formula ##STR2## C is present in an amount of 10 to 50 wt. % and is of the formula ##STR3## wherein R.sup.1 is methyl, ethyl, propyl, and D is present in an amount of 25 to 70 wt. % and is of the formula ##STR4## wherein n is an integer of from 1 to 3 and R.sup.2, R.sup.3 are hydrogen or methyl and R.sup.4 is alkyl, aralkyl or aryl.

Abstract: This invention provides a fluoropolymer dispersion useful for coating applications. The dispersion is a homogeneous and non-ozone depleting dispersion comprising a lubricious fluoropolymer, an inert perfluorinated liquid, a polar solvent, and an effective amount of a surface active agent selected from the group consisting ofa. perfluoroaliphatic amidoalkanols;b. polymerized products formed from the reaction of a mixture comprising a hydrophilic monomer and a monomer of the general formula: ##STR1## wherein p and q are integers between 1 and 4 inclusive, x and y are integers between 0 and 4 inclusive, m is 1 or 2, n is an integer between 3 and 10 inclusive, X' is either a methyl group or a single hydrogen atom, g is 0 or 1, and Q is a sulfonamido constituent group according to the formula: ##STR2## wherein R.sup.

Abstract: There is disclosed a viscosity reduction method including: (a) forming an azeotropic mixture including water and a liquid capable of forming the azeotropic mixture with the water in a coating composition comprised of the water, a solvent, and a polymeric material selected from the group consisting of a fluorohydrocarbon polymer and a grafted elastomer composed of a polyorganosiloxane bonded to a fluoroelastomer; and (b) agitating the coating composition including the azeotropic mixture, thereby reducing the viscosity of the coating composition.

Abstract: A method of anchoring soft tissue to bone is provided comprising providing a mixture of a hydrophobic monomer and a hydrophilic monomer and a crosslinking agent to form a swellable copolymer, adding a soft tissue attachment element to the mixture, wherein a portion of the soft tissue attachment element protrudes from the mixture, polymerizing the mixture to form the copolymer, implanting the copolymer into bone and attaching a soft tissue to the protruding portion of the attachment element to anchor the soft tissue to the bone.

Abstract: This invention provides a thermosetting composition comprising (A) a compound (A-1) containing an epoxy group or groups and a reactive silicon group or groups as essential functional group components in the same molecule, or a mixture (A-2) of an epoxy group-containing compound and a reactive silicon group-containing compound, and (B) an organotin catalyst, a thermosetting composition comprising (A) a compound (A-3) containing (i) an epoxy group or groups, (ii) a reactive silicon group or groups and (iii) a hydroxyl group or groups and/or a carboxyl group or groups as essential functional group components in the same molecule, or a mixture (A-4) of at least two types of compounds, each compound containing at least one member selected from the class consisting of functional group components (i) to (iii), and all of the functional group components (i) to (iii) being present in said mixture, and (B) an organotin catalyst; and methods of forming a finish coat using these thermosetting compositions.

Abstract: A lithographic printing ink contains an ester-modified carboxyl-containing copolymer as a pigment dispersant. The ester-modified carboxyl-containing copolymer is the reaction product of a long chain alcohol and a styrene maleic anhydride copolymer, wherein at least 35% of the carboxyl groups of the styrene maleic anhydride copolymer are esterified. The ink further includes a solvent selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, and mixtures thereof; a modifying oil; a liquid carrier resin; and a pigment.

Abstract: A composite pressure-sensitive hydrophilic adhesive such as for holding a medical or cosmetic treatment against the skin of a person is composed of a crosslinked polymer and a non-crosslinked polymer and a polar water-miscible solvent having a boiling point above 100.degree. C. at atmospheric pressure. The adhesive has little or no cold flow and can be applied in sheets. An alternate combination of polymers and a method of making both compositions is also disclosed.

Abstract: The subject invention involves processes for making granular compositions comprising soil release polymers, the polymers comprising at least about 10% of substantially linear esters having a backbone; the esters being uncapped or end-capped on one or both ends of the backbone; the esters comprising in their backbones oxyalkyleneoxy units and hydrophobic aryldicarbonyl units; the esters having a molecular weight of from about 500 to about 20,000; the polymers if in solid state having the tendency when exposed to moisture to spontaneously rearrange from an amorphous form which is readily soluble in water to a crystalline form which is relatively insoluble in water; the process comprising the following steps:a) taking the soil release polymers, in which are dispersed from 0% to about 25% alkylaryl or alkyl sulfonate crystallization-reducing stabilizers, in molten state at a temperature of at least about 180.degree. C.

Abstract: A process for production of a powder coating comprising: copolymerizing a monomer mixture comprising a (meth)acrylate monomer having branched or cyclic substituents of four or more carbon atoms in its side chain and a (meth)acrylate monomer having functional groups to form a thermosetting vinyl copolymer (a) having a glass transition temperature of approximately 40.degree. to 100.degree. C. and a number average molecular weight of approximately 1,000 to 10,000; dissolving or dispersing said copolymer (a) and a crosslinking agent (b) in a solvent comprising approximately at least 50% by weight based on the weight of the solvent, of tert-butanol, to form a resulting coating solution having a melting point of not less than approximately -30.degree. C.; and lyophilizing said coating solution under a pressure not higher than approximately 50 mmHg.

Abstract: A cosmetic composition for forming a peelable skin mask is provided based on a combination of polyvinyl alcohol and a hydrophobically-modified acrylate or methacrylate polymer. Most effective is a combination of two weight grades of polyvinyl alcohol, a low weight grade having a number average molecular weight ranging from about 15,000 to about 27,000 and a high weight grade having a number average molecular weight ranging from about 44,000 to about 65,000. The hydrophobically-modified acrylate or methacrylate polymer preferably is a copolymer formed from a carboxylic monomer and a C.sub.8 -C.sub.30 acrylate ester.

Abstract: There is disclosed a coating composition including water, a solvent, a grafted elastomer composed of a polyorganosiloxane bonded to a fluoroelastomer, and a liquid which forms an azeotropic mixture with the water, wherein the azeotropic mixture of the water and the liquid restrains a viscosity increase in the coating composition over time.

Abstract: Aromatic diamines having a carboxylic acid group and various other diamines are reacted with aromatic tetracarboxylic dianhdyrides in organic polar solvents to provide polyimides. Polyimide compositions for electrodeposition which comprise the neutralized salts of the polyimides, water and poor solvents for the polyimides have good keeping quality and when electrodeposited on electrically conductive materials, can form polyimide coats that have high levels of appearance, smoothness and denseness while exhibiting good physical and chemical characteristics in such aspects as heat resistance, electrical insulation and chemical resistance.

Abstract: Heat-curable coating materials having the compositionA) 10-50 wt. % of polyesters consisting ofa) aromatic and aliphatic and/or cycloaliphatic polycarboxylic acids, havingaa) 40-90 mol-% are aromatic polycarboxylic acids andbb) 60-10 mol-% are aliphatic and/or cycloaliphatic polycarboxylic acids, withb) polyols, whereinaa) 30-85 mol-% is neopentyl glycol andbb) >15-<50 mol-% is 1,3-propanediol;B) 5-40 wt. % of cross-linking agentsC) 15-50 wt. % of solvents and optionallyD) pigments andE) conventional paint additives.

Abstract: The invention is a composition formed by the reaction product of (A) at least one polysiloxane selected from the group consisting of(i) R.sub.3 SiO(SiR.sub.2 O).sub.x SiR.sub.3 and (ii) ##STR1## where: has an average value of from 0 to 1000,z has a value of at least 3,R is independently selected from the group consisting of a hydroxyl group, alkoxy group, tri-fluoropropyl group, an alkyl chain of 1 to 4 carbon atoms, a phenyl group, and an amine functional group, with the proviso that at least one R on the polysiloxane is an amine functional group; and(B) at least one acrylate having the formula ##STR2## where R is H or CH.sub.3, n.gtoreq.1 and Q is an organic group.

Abstract: Aqueous dispersions of vinyl polymers are disclosed. The polymers are copolymers of a vinyl halide, a vinyl ester, e.g., vinyl acetate, and a poly(alkylene glycol)-based macromonomer, e.g., poly(ethylene glycol)-maleic anhydride. Also disclosed are processes for the preparation of the aqueous dispersions which comprise forming the copolymer by solution polymerization, converting the dissolved polymer into an aqueous dispersion and removing the solvent from the aqueous dispersion.

Abstract: An improved polyurethane is prepared by reacting a diol component and an organic diisocyanate with critical selection of the amount of water in the reaction mixture and the diol component. The diol component is a long chain polyoxyethylene glycol optionally mixed with a low molecular weight polyoxyethylene glycol. A tough gel can be formed by mixing the polyurethane in a diol or triol and water solution. The tough gel can be used in burn and wound dressings, electroconductive pads, high slip materials and surgical implants. An optically clear gel can also be formed. Solutions and emulsions can be formed of the polymer and can be combined with fillers to form face creams and antiperspirants. A film can cover one side of the gel for burn and wound applications. The gel can be used in squeeze tubes and in spray cans in burn wound care dressings and industrial applications and in bags and containers for use in plastic surgery implants.

Abstract: Intercalates formed by contacting the layer material, e.g., a phyllosilicate, with an intercalant polymer to sorb or intercalate the polymer between adjacent platelets of the layered material. Sufficient intercalant polymer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 50 .ANG. (as measured after water removal to a maximum of 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. The intercalated complex is combined with an organic liquid into an unexpectedly viscous carrier material, for delivery of the carrier material, or for delivery of an active compound, e.g., a pharmaceutical, or cosmetic, or lubricant, e.g., food guide lubricants dissolved or dispersed in the carrier material. Alternatively, the intercalated complex can be exfoliated prior to combination with the organic liquid.

Abstract: A composition is provided for protecting exterior surfaces of automobiles and other products against abrasive dust, acid rain, etc. The composition is applied as a mixture of water solubilized acrylic acid copolymer, pH-neutral acrylic copolymer, alkyl alcohol, surfactant, and water. The composition dries on the exterior surface to form a tough flexible coating that can be removed by an alkaline aqueous detergent solution.

Abstract: A polyoxyalkylene-modified organopolysiloxane that generates almost no odor with the passage of time, and a method for preparation of the polyoxyalkylene-modified organopolysiloxane. This organopolysiloxane bears polyoxyalkylene bonded to silicon across alkylene, and contains 5-1,000 ppm by weight of an antioxidant. It also has a peroxide value not exceeding 5 meq/kg, and a total content of aldehyde plus ketone not exceeding 100 ppm.

Abstract: A thermosetting anti-reflective coating and method for making and using the same is disclosed for a broad range of exposure wavelengths, said coating containing an active curing catalyst, ether or ester linkages derived from epoxy functionality greater than 3.0, a dye-grafted hydroxyl-functional oligomer, and an alkylated aminoplast crosslinking agent, all present in a low-to-medium alcohol-containing solvent.

Abstract: The invention relates to rosin-supported emulsion polymer compositions which are modified with urea-containing monomers and/or urethane-containing monomers reacted with conventional acrylic or styrenic monomers to produce emulsion polymer latices. These emulsion polymer latices can be utilized to formulate printing inks exhibiting superior peel resistances for use in adhesive and extrusion lamination printings.

Abstract: A hydrophilic coating composition used to impart increased lubricity and wettability to the surface of a hydrophobic substrate which is comprised of three essential components:1) Hydrogel-forming polymer component A2) Water-soluble polymer component B3) Common solvent C for the components A and BThe water-insoluble, hydrogel-forming component A consists of a segmented copolymer with long, hydrophilic terminal blocks and the essentially hydrophobic central section. The two polymer components A and B have a limited miscibility in the absence of a common solvent C. Therefore, their blend tends to separate spontaneously into two polymer phases. The phase separation takes place during the solvent evaporation or extraction. A gradient of hydrophilicity and swelling within the coating layer is thus spontaneously created achieving a good adhesion to the substrate and high surface hydrophilicity at the same time.

Abstract: A composition useful as an antislip for articles with plastic surfaces is provided. Said composition typically comprises from 35 to 45% by weight of a rosin or derivative thereof, preferably a water-soluble, saponified rosin, from 5 to 10% by weight of an alcohol, preferably selected from the group consisting of ethane-1,2-diol, propane-1,2-diol and propane-1,2,3-triol, from 5 to 10% by weight of a liquefying agent, preferably selected from the group consisting of alkali metal alkyl benzenesulfonates containing up to 8 carbon atoms in the alkyl chain and alkaline earth metal alkyl benzenesulfonate containing up to 8 carbon atoms in the alkyl chain, optionally from 15 to 25% by weight of a propellant, e.g. dimethyl ether, optionally from 0.5 to 5% by weight of a water-soluble polymer selected from the group consisting of one or more of the following substances: starch, starch derivatives, dextrin, polyurethane, and cellulose ethers, and the balance water.

Abstract: Products are described which can be obtained by reacting components a), b) and c), where component a) is a compound of the formula I or a mixture of compounds of the formula I, component b) is a compound of the formula II or a mixture of compounds of the formula II and component c) is a compound of the formula III or a mixture of compounds of the formula III, ##STR1## in which the general symbols are as defined in claim 1, the compound of the formula I being, for example, pentaerythritol, thiodiethylene glycol, 1,4-butanediol, 1,4-propanediol, diethylene glycol, triethylene glycol, diethanolamine or glycerol, the compound of the formula II being, for example, sunflower oil or coconut fat, and the compound of the formula III being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate. The abovementioned products can be used as liquid antioxidants in polymers and lubricants.

Abstract: A hydrophilic, pressure sensitive adhesive of a poly(ethylene oxide) derived network plasticized with an essentially non-volatile, polar plasticizer present in an amount sufficient to form a cohesive, pressure sensitive adhesive. The polymeric network is prepared from an oligomeric precursor comprising difunctional poly(ethylene glycol) moieties which have been end-capped with ethylenically unsaturation. The adhesive is useful as a biomedical adhesive for transmitting or receiving electrical signals as a component of a biomedical electrode. The adhesive is also useful as a drug delivery device to deliver pharmaceuticals or other active ingredients to or through mammalian skin. The adhesive is also useful as a component in a skin covering for protecting mammalian skin or mammalian skin openings with antimicrobial agents. A method of preparation of the adhesive is also disclosed.

Abstract: The invention is an improvement in a process for producing silicone resins, to produce a silicone resin that has a high dynamic viscosity of at 293.degree. K. of from about 40 to about 300 mPas, a long shelf life, and a siloxane content of from about 50 to about 70 ma %, by the condensation of oligomeric siloxanes in concentrated solutions, by carrying out the condensation by heating at reflux and in the presence of a metal containing catalyst and dicarboxylic acid.

Abstract: A composition containing 100 parts by weight of a soluble polyimidosiloxane obtained by polymerization and imidation of an aromatic tetracarboxylic acid component and a component comprising a diaminopolysiloxane, an aromatic diamine with a hydroxyl group and optionally another aromatic diamine, 1 to 50 parts by weight of an epoxy resin, and optionally, also 2 to 150 parts by weight of an inorganic filler such as mica, silica or barium sulfate, and an organic solvent. The composition is homogeneously soluble in organic solvents, and when formed into a protective film on a flexible wiring board it has high heat resistance, flexing resistance, adhesion and chemical resistance (against soldering flux and tin plating solutions).

Abstract: A swellable oil-absorbent agent formed of a cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 carbon atoms and possessing one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer possessing at least two polymerizable unsaturated groups in the molecular unit thereof (providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight).

Abstract: The present invention relates to a process for preparing polymeric particles which is specially designed to be served as an opacifying agent in coating compositions such as water-borne paints, paper coating compositions and molding compositions which have white or light color shades. In more detailed description, this invention is concerned with the process for making an aqueous dispersion of core-shell emulsion polymer particles comprising (1) preparing the core by polymerizing carboxylic acid monomers with other monoethylenically unsaturated monomers, (2) encapsulating said core with a rigid polymer shell by polymerizing shell-forming monomers, in the presence of said core particles, which are fed in such manner that compositional contents of monomers entering to a polymerization zone is changing gradually thoughout the period of monomer feeding, and (3) neutralizing with base so as to swell said core and form particles which, when dried, contain at least one void.

Abstract: Aqueous latices adapted to forming visible light transparent, coherent polymeric films, e.g. in laminates, as protective coatings or as adhesives, comprising colloidal particles of a UV-absorbing polymer less than 5 micrometers in diameter. Useful UV-absorbing polymer include homopolymers and copolymers of vinyl-functionalized monomer of benzotriazole or benzophenone and mixtures with plasticizer and/or coalescing agent. Plasticizer and coalescing agents are useful for providing polymer with reduced glass transition temperature to facilitate coalescence of polymer particles into coherent films. Useful additives for the latices of this invention include wetting agents, surfactants, and crosslinking agents, anti-oxidants and radical scavengers. The latices of this invention are particularly useful in providing clear, thin coatings on windows, tags, labels, flooring, tents, awnings, containers and other UV-susceptible substrates.

Abstract: Solvent free liquid masking compositions comprise from about 5 to about 20 percent by weight of an aliphatic polyol; from about 1 to about 20 percent by weight of a plasticizer; from about 0.1 to about 1 percent by weight of a surfactant; and sufficient water to total 100 percent by weight, wherein the masking composition is water-soluble and devoid of volatile organic chemicals; it is devoid of polymer resins other than polyvinyl alcohol in amounts sufficient to render the film water-insoluble and is stain resistant to applied surfaces. A method for protecting selected surfaces from paint in painting operations comprises applying a solvent free liquid masking composition to selected surfaces of an object where paint subsequently applied is not desired; allowing the liquid masking composition to dry, forming a film; painting the object, whereby surfaces carrying the film are protected from the application of paint; and removing the film.