Abstract: An adhesion promoter composition and method for enhancing adhesion between a polysulfide polymer and a thermoplastic substrate is provided having a solid resole phenolic resin and a compatible organic solvent, optionally containing a chlorinated polyolefin.

Abstract: The present invention provides a composition that softens at a predetermined temperature, preferably between about 20.degree. C. and 90.degree. C., and more preferably between about 20.degree. C. and about 62.degree. C., comprising at least one block copolymer having at least two thermal transition temperatures. The composition is characterized by at least two thermal transition temperatures, one of which is a predetermined lower transition temperature, preferably between about 20.degree. C. to 90.degree. C., and more preferably between about 20.degree. C. to about 62.degree. C., and one of which is an upper transition temperature. The present invention also provides a method of making the composition, a method of making biomedical materials and articles, and toys and toy components, with shape-memory properties from the composition, and biomedical materials and articles, and toys and toy components, with shape-memory properties made from the composition.

Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.

Abstract: Etching selectivity is improved in a semiconductor process using a fluorocarbon gas. An energy incident to a substrate is controlled to have a value to cause transition from etching to deposition on a silicon nitride film, ions having (CF.sub.2).sub.n.sup.+ as a major component are guided onto the substrate to perform selective etching of a silicon oxide film against the silicon nitride film.

Abstract: An elastomeric adhesive composition or cushion which binds various elastomeric layers together is solventless and comprises a blend of a bis-imide compound, one or more elastomers, and a tackifier. The elastomeric adhesive has strong blowout protection and can be utilized to form a laminate of a buffed cured tire carcass carcass to a cured or uncured tire tread.

Abstract: A pigment dispersion useful for forming aqueous coating compositions containing metallic flake pigment, an aqueous carrier and a graft copolymer dispersant (binder);wherein the graft copolymer has a weight average molecular weight of about 5,000-100,000 and comprises a polymeric backbone and macromonomer side chains attached to the backbone wherein(1) the polymeric backbone is formed of polymerized ethylenically unsaturated monomers and(2) the side chains are macromonomers that are attached to the backbone at a single terminal point and formed from polymerized ethylenically unsaturated monomers that are polymerized in the presence of a cobalt chain transfer agent have a weight average molecular weight of about 1,000-30,000;wherein the graft copolymer contains about 2 to 70% by weight, based on the weight of the graft copolymer, of polymerized constituents having a phosphate moiety and phosphoric acid moieties that are polymerized into the backbone, the side chains or both and the polymer is neutralized with a

Abstract: A resin composition for toners with excellent characteristics is provided. The composition comprises, as principal components, a resin (A) containing carboxyl groups and a resin (B) containing glycidyl or .beta.-methylglycidyl groups, wherein the resin (A) is obtained by a reaction between a multivalent metal compound (m) and copolymer .alpha., said copolymer .alpha. being obtained from a styrene type monomer (a), a (meth)acrylic ester monomer (b), and a vinyl type monomer (c) containing carboxyl groups, and the resin (B) is copolymer .beta. obtained from a vinyl type monomer (d) containing glycidyl or .beta.-methylglycidyl groups and another vinyl type monomer (e).

Abstract: A fire and chemical resistant fabric having anti-static properties which comprises at least one laminate formed by coextruding a pair of polymeric sheets with an intermediate layer of a polar resin or hydrophilic polymer which is adhered to a fabric scrim comprising a blend of polyester and cellulosic fibers, the fabric scrim containing an effective amount of an anti-static and fire resistant agent.

Abstract: A coating composition for application to primed metal substrates as a topcoat is disclosed. The coating composition is especially useful on metal closures for vacuum-packed food products. The coating composition is free of a halide-containing vinyl polymer and comprises: (a) an epoxy novolac resin, (b) a phenolic resin, (c) a polyester, and (d) an elastomer, in (e) a nonaqueous carrier.

Abstract: The invention is directed to polymers containing thiuram disulfide groups and their preparation. These polymers are iniferters in radical polymerization of vinyl monomers. Macroiniferters (having one thiuram disulfide group in their main chain) and polyiniferters (having more than one thiuram disulfide group in their main chain) result respectively, in triblock copolymers PA--PB--PA and diblock copolymers. --PA--PB).sub.z, z having a value from 2 to 25.

Abstract: Method of producing a microstructure in a bioresorbable element comprising a material consisting of a major portion of at least one polymer selected from the group including aliphatic polyesters and aliphatic polycarbonates and copolymers thereof. The microstructure is accomplished by using an excimer laser which is operated at a maximum wavelength of 248 nm.

Abstract: Polyacetal resins can selectively be reduced in terms of surface gloss by the addition of a core-shell polymer. The core-shell polymer which serves as the surface gloss reducing agent is one which has a rubbery polymer as its core, and a glassy vinyl copolymer having an oxygenic group (e.g., a hydroxyl or glycidyl group) as its shell. Preferably, the core-shell polymer is emulsion polymerized in sequential stages to form the core and shell polymers by use of an oligomeric surfactant. The core-shell polymer is most preferably present in the polyacetal compositions in an effective amount of between 1 to 50 parts by weight, based on 100 parts by weight of the polyacetal base resin.

Abstract: Polyoxymethylene compositions exhibiting improved heat stability and reduced formation of mold depositions during molding are usefully employed to form molded articles used as parts for electrical or electronic equipment since such parts experience few malfunctions due to formic acid generated from the composition. The preferred composition includes a blend of 100 parts by weight of polyoxymethylene resin with (a) 0.01 to 5.0 parts by weight of an antioxidant, (b) 0.01 to 5.0 parts by weight of a melamine-formaldehyde polycondensate, and (c) 0.001 to 10 parts by weight of at least one metallic compound selected from magnesium oxide, magnesium carbonate, and calcium oxide.

Abstract: The invention provides an oxyalkylene group-containing PVA resin composition with an alkali metal acetate content of 0.001.about.1 weight % and an oxyalkylene group-containing PVA resin composition with an alkali metal acetate content of 0.001.about.1 weight %, which further contains 0.1.about.10 moles of an acid with a pKa value of not more than 5.0 per mole of the alkali metal acetate, optionally together with 0.01.about.5 weight of a phenol compound which melts at 50.degree..about.250.degree. C., a thioether or a phosphite based on the polyvinyl alcohol and/or 0.01.about.3 weight % of a fatty acid compound based on the polyvinyl alcohol.

Abstract: The present invention provides an impact resistant Fresnel lens comprising a resin which is obtained by polymerizing a solution consisting essentially of (a) 100 parts by weight of a monomer mixture comprising an styrenic monomer in an amount of from 60 to 99 parts by weight and a (meth)acrylic monomer of from 1 to 40 parts by weight, and (b) 1 to 50 parts by weight of a styrene-dienic copolymer based on 100 parts by weight of said monomer mixture based on 100 parts by weight of said monomer mixture. The Fresnel lens has a high refractive index and excellent transparency and impact resistance.

Abstract: A cellular molded article (11) of a polypropylene resin having a skin (8) was produced by placing a skin material (8) on the interior surface of a die A (13), clamping the die A (13) with a die B (14) to form a mold (7), then charging the mold (7) with pre-expanded particles of a polyethylene resin, pre-heating the pre-expanded particles using steam supplied through the vapor holes (4) of the die B (14) at a temperature lower than the temperature at which the pre-expanded particles are melt bonded together, then holding the pre-expanded particles in said steam, and next performing the main heating of the pre-expanded particles through the die B (14) at a temperature not less than the temperature at which the pre-expanded particles are melt bonded together. At the time of the main heating of the pre-expanded particles through the die B (14), the die A (13) may also be heated up as needed.

Abstract: A method of achieving a superior dispersion of polymeric sulfur comprises mixing the polymeric sulfur while it is in the rubbery state with a diluent, such as rubber, to obtain a uniform dispersion of the sulfur in the diluent.

Abstract: A process for making a spray dried redispersible polymer powder, especially a VAE copolymer powder, by spray drying a polymer emulsion containing a polyvinyl alcohol redispersant. A sufficient amount of the total polyvinyl alcohol redispersant is added to the polymer emulsion prior to spray drying and the remaining amount of polyvinyl alcohol redispersant is added as a dry powder to the spray dried polymer powder.

Abstract: Polymeric powder coating compositions featuring improved physical properties including improved impact strength, improved adhesivity and other properties is provided by a polymeric powder coating composition which comprises: (a) polymeric powder coating resin, (b) at least one low molecular weight ethylene copolymer having a degree of saponification of at least 25%, (c) a further constituent selected from the group consisting of catalyzing agents, flow control agents, coloring agents, fillers, processing aids, wherein the weight ratio of (b) to (a) is preferably in the range of 0.01%-20% to 99.99%-80%. The powder coating composition may be applied to articles using conventional techniques. Processes for producing the polymeric powder coating compostiions, and articles comprising the same are also disclosed.

Abstract: There are described block copolyacetals obtainable by cationically initiated polyaddition of(A) polyacetals containing acetaldehyde acetal units and having at least 2 OH groups in the molecule and(B) polyacetals containing acetaldehyde acetal units and having at least 2 vinyl ether groups in the molecule.in a molar ratio of (A):(B) of from 2:1 to 1:2, processes for preparing the block copolyacetals by cationically initiated polyaddition of (A) and (B), and the use of the block polyacetals as additament to reduced-phosphate and phosphate-free detergents and cleaners and as low-foam surfactants in dishwashing compositions.