Abstract: A water borne back bedding sealant formulated from an acrylic polymer emulsion and a urethane polymer emulsion provides superior adhesion, tensile properties, low temperature flexibility, rheology and bond strength. In one embodiment of the present invention, the back bedding sealant comprises the following components: from 50% to 75% by weight of an acrylic polymer emulsion, from 7% to 25% by weight of a urethane polymer emulsion which is compatible with the acrylic polymer emulsion plus minor amounts of components to be selected from a list comprising: rheology modifiers, glycols, mineral oil, silanes, Ph adjusters, surfactants, water, silicas, and antimicrobial agents. These superior properties can be attained even with a clear sealant.

Abstract: A method and composition for coating a metal for use in connection with improving corrosion resistance and paint adhesion. The composition is a non-corrosive ester cross-linked polymer system having a plurality of carboxylic functional groups and a plurality of hydroxyl groups. The polymer system may be a bifunctional copolymer or the reaction product of a first polymer having a plurality of carboxylic functional groups (e.g. polyacrylic acid or polymethylvinylmaleic anhydride), and a second polymer having a plurality of hydroxyl groups (e.g. polyvinyl alcohol). The resulting reaction product of these two polymers is a cross-linked polymeric blend. A compound of a Group IV-B element may be added to this polymer blend to increase the degree of cross-linking and improve paint adhesion and corrosion resistance. Such a Group IV-B compound may be an acid such as fluozirconic acid, fluotitanic acid or fluohafnic acid, or a salt such as ammonium zirconium carbonate.

Abstract: A seamless polyimide composite tube which includes a polyimide layer, a conductive primer layer on the surface of the polyimide layer and a fluororesin layer on the surface of the primer layer and a method of manufacturing the composite tube.

Abstract: Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reactions.

Abstract: An oxygen scavenging ribbon comprises a heat sealable resin and an oxygen scavenging material. This ribbon, upon oxidation of the oxygen scavenging material, does not release significant amounts of byproducts which are odorous and/or non-GRAS food additives. This ribbon can be in a number of forms including a multilayer casting or blown film tube. This ribbon provides a great deal of flexibility in the scavenging of oxygen within packaging environments.

Abstract: This invention relates to block polymers containing both crystalline and elastomeric blocks, the block copolymer having an A block and a B block. The A block is a polyethylene or an ethylene polymer optionally containing an alpha-olefin and is generally crystalline. The B block contains an ethylene, .alpha.-olefin copolymer segment and optionally contain an ethylene, .alpha.-olefin, non-conjugated diene terpolymer segment. If the B block contains a diene containing segment, the diene containing segment is furthest from the junction of the A and the B blocks. Also disclosed is a process for manufacture of the block copolymers and methods for coupling the block copolymers. Coupled block copolymers are useful as thermoplastic elastomers exhibiting physical properties approaching those of crosslinked EP or EPDM elastomers, but showing thermal processability after coupling.

Abstract: A coated panel formed from a self-supporting cellulosic substrate and a top coating containing a thermoset resin having about 0.1-1.5 wt % free formaldehyde admixed with said resin; and (b) a thermoplastic polymer thoroughly admixed with said resin, wherein said thermoplastic polymer exhibits amine groups capable of reacting with at least some of the free formaldehyde under resin curing conditions. The coated panel can be embossed with decorative patterns such as wood grain without fracture of the coated surface or significant buildup on the press or embossing die surfaces.

Abstract: A copolymer comprising 0.005 to 1.5 mole % of repeating units derived from an iodine-containing fluorinated vinyl ether, 40 to 90 mole % of repeating units derived from vinylidene fluoride, 3 to 35 mole % of repeating units derived from perfluoro(methyl vinyl ether), optionally up to 25 mole % of repeating units derived from hexafluoropropylene and optionally up to 40 mole % of repeating units derived from tetrafluoroethylene, which is obtained by polymerizing the above monomers in the presence of a diiodide compound, contains iodine atoms introduced in the copolymer from the diiodide compound and the iodine-containing fluorinated vinyl ether in amounts of 0.01 to 1 wt. % and 0.01 to 2 wt. %, respectively, and has a Mooney viscosity of 20 to 150.

Abstract: A tire tread made for polydiene rubber crosslinked with 1,2-bis(N,N-dibenzylthiocarbamoyldisulfido)ethane and method of producing the same.

Abstract: An aromatic hydrocarbon formaldehyde resin novolak, useful as a raw phenolic compound for producing a curing agent and an epoxy resin, an epoxy resin composition which contains a novolak type epoxy resin derived from the above novolak resin and an epoxy resin and is therefore excellent in heat resistance, adhesion and humidity resistance, and a process for the production of a phenolic resin, which comprises reacting an aromatic hydrocarbon formaldehyde resin, phenol and formaldehyde in a novolak-forming reaction in the presence of a catalyst to prepare an aromatic hydrocarbon formaldehyde resin novolak, and treating the reaction product with steam while maintaining the temperature of a reaction mixture at 120.degree. to 195.degree. C. to remove unreacted substances and to decompose high-molecular-weight polymers.

Abstract: Laminar articles having improved barrier properties to organic solvents and gases, fabricated directly from polyolefin and modified polyamide, are disclosed. The modified polyamide is a blend of 97-40 wt % polyamide and 3-60 wt % of compatabilizer which is a polyether ester amide block copolymer or a mixture of the block copolymer and alkylcarboxyl-substituted polyolefin.

Abstract: Flexible, aminoplast-curable film-forming compositions and multi-component composite coating compositions comprising at least one pigmented or colored base coat and at least one transparent clear coat are disclosed. A pigmented or colored base coat is first applied to a substrate followed by the application of a clear coat to the base coat. Both the colored base coat and the clear coat are flexible, curable film-forming compositions having an aminoplast crosslinking agent, and the base coat and optionally the clear coat has carbamate functional polymers. The flexible, multi-component composite coating compositions provide improved durability, water spotting resistance, and/or acid etch resistance, making the composite coatings particularly useful for plastic automotive parts.

Abstract: A composition which provides polyamide substrates with resistance to staining by acid dyes comprising(A) carboxylic acid-containing stain-resist polymers selected from:(i) methacrylic acid polymers, or(ii) hydrolyzed copolymers of maleic anhydride with ethylenically unsaturated aromatics, alpha-olefins, alkyl vinyl ethers or alkyl allyl ethers or(iii) mixtures of (i) and (ii),and(B) resole condensates prepared by reacting bis(hydroxyphenyl)sulfone which contains no sulfonate or carboxylate groups with formaldehyde in the presence of an alkali metal hydroxide, at a bis(hydroxyphenyl)sulfone resole resin:carboxylic acid-containing stain-resist polymer weight ratio in the range between about 1:20 and 2.5:1.0 is disclosed.

Abstract: The present invention provides a method of preparing a sized warp yarn comprising the steps of (a) preparing a warp yarn sizing composition comprising (i) a first component which is a starch material, and (ii) a second component comprising starch and a reaction product of styrene and 1,3-butadiene wherein said starch component of said second component is characterized by an intrinsic viscosity of from about 0.07 to about 0.35 dl/g, and (b) slashing warp yarn with the sizing composition of step (a).

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

Abstract: In a two layer extrusion molding, a core part 11 is formed of hard resin material, a crease pattern 11a having a given depth, preferably, a depth in the range of 10 to 20 .mu.m is formed on the surface of the core part 11, and a skin part 12 formed of soft resin material is coated on the surface of the core part 11. Thus, the core part and skin part are effectively prevented from being detached from each other to thereby improving the quality of the molded product.

Abstract: A method is provided for forming a nitride spacer, in which a layer of oxide is grown superjacent a substrate and the semiconductor features disposed thereon. A layer of nitride is deposited superjacent the oxide layer, and a major horizontal portion of the nitride layer anisotropically etched with an ionized fluorocarbon compound. The remainder of the horizontal portion of the nitride layer is removed with NF.sub.3 ions in combination with ionized halogen-containing compound, thereby creating nitride spacers adjacent the features.

Abstract: There are provided powder-free polymer coated rubber articles coated with a non-tacky acrylic based emulsion copolymer formed by polymerization of at least one low surface energy monomer, at least one alkyl acrylate and at least one hard monomer. The copolymers are preferably formed by sequential polymerization.

Abstract: The invention relates to a process for the preparation of copolymers or polycondensates having solvating properties. The process for the preparation of a copolymer or a polycondensate comprised essentially of solvating units susceptible of inducing crystallinity, units reducing the crystallinity of the copolymer or of the polycondensate, and optionally cross-linkable units, all said units being of the oxyalkylene type or of the oxyalkenylene type, is characterized in that during a first step, a copolymer or a polycondensate is prepared, said copolymer or polycondensate comprising solvating units susceptible of inducing crystallinity and units which have a carbon/carbon insaturation in conditions which do not affect said insaturation and in that during a second step, at least a portion of the insaturations is subjected to hydrogenation. Application to the preparation of copolymers useful for producing ionic condition materials.

Abstract: A thermoplastic polyurethane composition of the present invention includes a thermoplastic polyurethane obtained by reacting at least the following components A, B, and C: (A) a polyester polyol having a number average age molecular weight of 500 to 5000, containing an acid component including aromatic dicarboxylic acid and aliphatic dicarboxylic acid, the molar ratio of the aromatic dicarboxylic acid to the aliphatic dicarboxylic acid being 5:95 to 90:10; (B) a low molecular weight diol having a molecular weight of less than 500; and (C) an organic diisocyanate, wherein the thermoplastic polyurethane has a metal sulfonate group of 10 to 1000 equivalents/10.sup.6 g of the polyurethane and a urethane group of 1200 to 3000 equivalents/10.sup.6 g of the polyurethane.