Abstract: Acrylic resin compositions having excellent antistaticity, good appearance and superior optical properties made by blending (A) 100 parts by weight of an acrylic resin; (B) a phosphonium sulfonate consisted of organic sulfonate anion and organic phosphonium cation; (C) a lithium benzenesulfonate; and (D) 0.05 to 2.0 parts by weight of a fatty acid ester and/or amide, wherein (B)/(C) is 2/8 to 8/2 by weight and (B) plus (C) is 0.2 to 2.5 parts by weight.

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to t

Abstract: The present invention relates to rubber compounds containing aromatic ketone polysulfides of the formula: wherein R is selected from the group consisting of alkyls having from 1 to 18 carbon atoms and x is an integer of from 2 to 8.

Abstract: A process for producing an improved three-dimensional polymeric adhesive material comprises: (1) reacting a starting polymer containing an active hydrogen or hydroxy function with a polyfunctional nucleophile to form an adduct product; and (2) reacting the adduct product with a polyelectrophile to generate a three-dimensional polymeric adhesive material. Preferably, the starting polymer is a high molecular weight polyester, the polyfunctional nucleophile is a polyisocyanate, and the polyelectrophile is at least one polyepoxide. The present invention also encompasses processes for bonding at least two substrates by generating the adhesive material between them, as well as the adhesive material itself. The invention is particularly suitable for bonding electronic components such as printed circuit boards.

Abstract: A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

Abstract: The invention relates to a process for the polymerization or copolymerization of at least one monomer which can be polymerized or copolymerized by the radical route in the presence of a stable free radical and of an iniferter. The presence of the stable free radical greatly modifies the behavior of the iniferter during the polymerization or copolymerization, so that undesirable reactions are much reduced. It is possible, rapidly and with a high yield, to polymerize or copolymerize in the presence of an iniferter in order to result in a polymer or copolymer with a reduced polydispersity and with a monomodal molecular mass distribution.

Abstract: The reduction of hysteresis in a silica-filled, vulcanized elastomeric compound is produced by mixing diene monomer and optionally monovinyl aromatic monomer with an initiator and a coordinator; effecting polymerization conditions; terminating polymerization with a terminator containing an organo-tin group to form a tin-coupled diene elastomer; compounding the tin-coupled diene elastomer with an amorphous silica filler and a vulcanization agent; and, effecting vulcanization. A pneumatic tire tread stock incorporating the vulcanized elastomer compound exhibits decreased rolling resistance in the tire.

Abstract: A water-insoluble copolymer which is composed of (a) from 39.9 to 60% by weight of N,N-dimethylacrylamide or N,N-dimethylmethacrylamide; (b) from 60 to 39.9% by weight of N-alkylated acryl amides or N-alkylated methacryl amides; (c) from 0.1 to 0.7% by weight of a proton-sensitive fluorophore which is covalently bonded to the copolymer; and (d) from 0 to 20% by weight of a diolefinic crosslinking component. The copolymer is used in the form of a membrane on a transparent support material as an optical sensor for ionic strength-independent pH value determination.

Abstract: A single-layer or multiple-layer foil of substantially reduced gas-permeability comprises at least one layer which consists, at least in part, of substantially thermo-plastically processable starch. In order that this single-layer or multiple-layer foil is at least approximately insensitive to moisture it is proposed that at least one layer comprises furthermore at least one hydrophobic polymer, such as a polyolefin, which is mixed with the starch upon the production of said at least one layer, and/or that the starch is at least partially cross-linked on the surface of said at least one layer and/or that said at least one layer is covered by at least one additional layer which is at least approximately insensitive to moisture.

Abstract: A deproteinized natural rubber substantially free from any protein and a process for producing the same which comprises treating a latex with a protease and a specific surfactant or a combination of specific surfactants and separating rubber particles are disclosed. A method for elevating the green strength of a natural rubber and a method for lowering the green strength of a natural rubber are also disclosed. Furthermore, a means for preventing allergy induced by natural rubber is also disclosed.

Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.

Abstract: UV-curable coating compositions containing urethane acrylates prepared from hydroxyalkyl acrylates and low-viscosity polyisocyanates having isocyanurate groups, low-viscosity acrylic ester components as reactive diluents, initiators, and optionally solvents and/or other known additives, and their use for coating molded articles of thermoplastic polycarbonates.

Abstract: A water-soluble, powdered, cationic polyelectrolyte comprising a copolymer of acrylamide and dimethylaminopropylacrylamide which is essentially free of bifunctional compounds and in which a) the dimethylaminopropylacrylamide is quaternized; b) the quotient of the intrinsic viscosity of the copolymers divided by the molar ratio of acrylamide to dimethylaminopropylacrylamide is greater than 200; and c) the proportion of the cationic monomers in the polymer is between 4 and 80 mol-%, the copolymer having been obtained by copolymerization of acrylamide and quaternized dimethylaminopropylacrylamide said quaternized dimethylaminopropylacrylamide having been obtained by the reaction of dimethylaminopropylacrylamide with a quaternizing agent in the absence of acrylamide.

Abstract: A novel class of interpenetrating polymer networks which are dispersible in conventional coating solvents is disclosed. Such dispersions are useful in preparing protective and/or decorative film coatings and are particularly useful in photosensitive or imaging formulations such as photoresists, solder masks and the like. These polymer networks are comprised of at least two interpenetrating crosslinked polymers. At least one of the polymer networks is formed by polymerization in a solvent. In one embodiment of this invention, at least one polymer network is prepared from macromers to produce a polymer system having functionalized branch or graft linear segments. The solvent dispersible interpenetrating networks of this invention are particularly useful as binders in addition polymerizable photosensitive compositions containing crosslinking monomers such as solder masks. Upon exposure to actinic radiation and suitable thermal curing, solder mask coatings of such photosensitive compositions form multiple, e.g.

Abstract: Improved autodeposited coatings on metallic surfaces are formed by contacting the metallic surfaces with an autodepositing composition comprising an acidic aqueous coating solution containing dispersed solid resin particles or either an internally stabilized or externally stabilized vinylidene chloride polymer, an exemplary internally stabilized polymer being prepared from vinylidene chloride and a monomeric surfactant which includes an inorganic ionizable group, and an exemplary externally stabilized polymer being prepared from vinylidene chloride and a reactive comonomer, the resulting resin particles having surfactant adsorbed thereon, said autodeposited coatings having extremely good corrosion resistant properties without treatment with a reaction rinse such as a chromium rinse.

Abstract: The invention is a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of an N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine of the formula:  wherein R is selected from the group consisting of alkyl and aryl groups, and R1 is selected from the group consisting of alkyl groups, aryl groups, and alkylaryl groups,  and an anionic monomer, and  the invention is also a method of inhibiting the precipitation and deposition of scale on metal surfaces in contact with industrial cooling waters comprising the addition of an effective, scale-inhibiting amount of a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of a betaine of the formula:  wherein R is selected from the group consisting of alkyl and aryl groups, and R1 is selected from the group consisting of alkyl groups

Abstract: The invention relates to a coating composition, a method of coating molded articles with the coating composition, and the molded articles so coated, particularly molded articles of thermoplastic or thermoelastic polymers. The coating, in the form of a cured thin layer, is particularly clear, scratch resistant, and weather-resistant. It is produced on the plastic substrate material by polymerization of a layer of flowable coating comprised of the coating composition, which layer is essentially comprised of monomers comprised of polyfunctional (meth)acrylic compounds. The coating is distinguished by good anti-soiling and anti-graffiti characteristics.

Abstract: A vinyl chloride resin composition having a greatly improved processability without lowering the transparency wherein the gelation property of a vinyl chloride resin is improved with greatly decreased generation of ungelled substance; which comprises a vinyl chloride resin and 0.

Abstract: Novel styrene sulfonate-based polymers and cation exchange membranes which are particularly suitable for use in electrodialysis of whey and improved methods for electrodialysis of whey are disclosed.

Abstract: Polymers having amine-thiol terminal moieties are provided. The amine-thiol terminal moieties are imparted by using amine-thiols as chain transfer agents in aqueous addition polymerizations. The polymers are useful as mineral dispersants, as water-treatment additives for boiler waters, cooling towers, reverse osmosis applications, sugar refining, paper production, geothermal processes and oil wells, and as detergent additives acting as builders, anti-filming agents, dispersants, sequestering agents and encrustation inhibitors.