Abstract: Disclosed are dry film solder mask compositions containing a binder material that is the reaction product of: (a) a polymerized mixture of polypropyleneglycol monomethacrylate, methacrylic acid and, preferably, specific acrylates and methacrylates; and (b) isocyanatoethyl methacrylate. The masks are equal or superior to current dry film masks in affording protection to circuit boards.

Abstract: Disclosed are novel wet strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyamino-copolyamide derived by reacting methylbisaminopropylamine with (a) a diester of oxalic acid and (b) a diester of a saturated dicarboxylic acid containing at least 4 carbon atoms, the mole ratio of (a) to (b) being from about 0.25:1 to about 10:1.

Abstract: Disclosed is an aqueous developable, photopolymerizable composition having increased flexibility and reduced cold flow comprising a unique mixture of a siliceous material and a plasticizer in combination with known photopolymerizable monomers, polymeric binders, thermal polymerization inhibitors, and photoinitiators.

Abstract: Disclosed is a method for controlling edge fusion in a laminate of an aqueous developable photoresist composition sandwiched between a film support and a protective cover sheet comprising maintaining the relative humidity below about 20% in the environment surrounding the laminate, preferentially achieved by packaging the photoresist with a desiccant in a moisture proof container.

Abstract: Disclosed are stabilized blends comprising (1) from about 55% to about 90% of at least one high molecular weight C.sub.2 -C.sub.3 block copolymer elastomer, (2) from about 10% to about 35% of at least one compatible low molecular weight resin, and (3) from 0% to about 15% of at least one incompatible resin, the total of (1), (2) and (3) being 100%. The blends are elastomers useful in industrial hose applications and in mechanical rubber goods, such as gaskets and mounts.

Abstract: Disclosed is a photoresist using a 3-vinylcarbazole as the photopolymerizable monomer.

Abstract: Disclosed are shelf life improvers for photoresist compositions containing organic halides as the photoinitiator that comprise an acetylene compound having the general formula RC.tbd.CR' where R and R' are each independently phenyl, hydrogen, benzyl, vinyl, lower alkyl substituted vinyl, phenyl substituted vinyl, lower alkoxy methyl and phenoxymethyl.

Abstract: Disclosed is a thermoplastic elastomer containing a cross-linked polyepihalohydrin rubber made by simultaneously cross-linking the rubber and blending the rubber with a crystalline polyolefin in the presence of a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight.

Abstract: Disclosed are vulcanized compositions of (1) from about 80% to about 99% of a rubber material selected from the group consisting of butyl rubber, halogenated butyl rubber having from about 1% to about 3% by weight of halogen and mixtures thereof, and (2) from about 1% to about 20% of a chlorinated hydrocarbon polymer having a chlorine content of from about 30% to about 70% by weight of chlorine, said composition having good impermeability to gases and tear resistance and being useful in tire inner tubes and inner liners.

Abstract: Disclosed are crosslinking compositions having both sulfur and nonsulfur curative systems which are particularly adapted for crosslinking rubber blends of (a) from about 35% to about 85% halobutyl rubber or a mixture of butyl rubber and halobutyl rubber wherein the halobutyl rubber is at least 50% by weight of the mixture and (b) from about 15% to about 65% of an epihalohydrin rubber, and the rubber materials crosslinked therewith. The rubber materials crosslinked with these crosslinking compositions have an excellent balance of cure rate, cure state and scorch safety; have improved tire carcass adhesion and good impermeability to gases; and are useful in tire inner tubes and inner liners.

Abstract: Poly(dicyclopentadiene) made with an olefin metathesis catalyst system by a Reaction Injection Molding process is improved by adding flame retardant compounds.

Abstract: Disclosed are plasticized compositions comprising polyvinylchloride, a trimellitate ester, and a pentaerythritol alkanoic acid ester.

Abstract: Disclosed are novel wet strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyamino-copolyamide derived by reacting methylbisaminopropylamine with (a) a diester of oxalic acid and (b) a diester of a saturated dicarboxylic acid containing at least 4 carbon atoms, the mole ratio of (a) to (b) being from about 0.25:1 to about 10:1.

Abstract: A cure system for halogen-containing polymers that comprises a thiourea derivative, a thiuram sulfide and an inorganic base yields stable cross-linked products with useful properties when incorporated into normal vulcanization procedures.

Abstract: Disclosed are crosslinking compositions having both sulfur and nonsulfur curative systems which are particularly adapted for crosslinking rubber blends of (a) from about 35% to about 85% halobutyl rubber or a mixture of butyl rubber and halobutyl rubber wherein the halobutyl rubber is at least 50% by weight of the mixture and (b) from about 15% to about 65% of an epihalohydrin rubber, and to the rubber materials crosslinked therewith. The rubber materials crosslinked with these crosslinking compositions have an excellent balance of cure rate, cure state and scorch safety; have improved tire carcass adhesion and good impermeability to gases; and are useful in tire inner tubes and inner liners.

Abstract: Disclosed are vulcanized compositions of (1) from about 80% to about 99% of a rubber material selected from the group consisting of butyl rubber, halogenated butyl rubber having from about 1% to about 3% by weight of halogen and mixtures thereof, and (2) from about 1% to about 20% of a chlorinated hydrocarbon polymer having a chlorine content of from about 30% to about 70% by weight of chlorine, said composition having good impermeability to gases and tear resistance and being useful in tire inner tubes and inner liners.