Abstract: Disclosed herein are novel prepolymers which, when foamed provide hydrophilic polyurethane foams which are biodegradable.

Abstract: Disclosed herein is a polyurethane foam having good wet strength. The foam is prepared by reacting a urethane prepolymer with large amounts of water containing a poly(amino)urea and optionally other ingredients, e.g. surfactants. The poly(amino)urea is characterized as being the water soluble reaction product of a polyamine with a urethane prepolymer, said reaction product being further reacted with a crosslinking agent, e.g. epichlorohydrin.

Abstract: A continuous protective coating is formed on a fiber optic by coating said fiber optic in a bath of a liquid radiation curable composition at a temperature up to 90.degree. C and thereafter exposing the coated conductor to ultraviolet or high energy ionizing radiation to cure the coating.

Abstract: This invention relates to a liquid radiation curable composition useful for coating and imaging which comprises(1) an acrylic or methacrylic terminated, urethane containing polyene,(2) a non-water soluble vinyl monomer diluent, preferably an acrylate or methacrylate monomer diluent,(3) a polythiol containing at least two thiol groups per molecule and(4) a photoinitiator.The composition on exposure to radiation, e.g., a U.V. light source, cures to a solid polythioether.

Abstract: This invention relates to a process for preparing thiols and polythiols by the addition of a thiolcarboxylic acid, e.g., thiolacetic acid, to ethylenically unsaturated compounds in the presence of an initiator comprising a pinacol of the general formula: ##STR1## wherein R.sub.1 and R.sub.3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R.sub.2 and R.sub.4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy to obtain a thiol ester which is thereafter hydrolyzed to yield the corresponding thiol.

Abstract: This invention relates to polyenes containing at least two ethylenically unsaturated bonds per molecule formed by reacting in substantially stoichiometric amounts, (1) a primary diamine, (2) a member of the group consisting of a benzenoid-containing dianhydride, acid anhydride and anhydride acid halide and (3) an ethylenically unsaturated alcohol. The thus formed amide-acid polyene either per se or after being cured in combination with a polythiol in the presence of a free radical generator will, upon heating, imidize.

Abstract: This invention relates to polyenes containing at least two ethylenically unsaturated bonds per molecule formed by reacting a hydantoin glycol with an ethylenically unsaturated reactant or adduct containing an isocyanate group. On exposure to a free radical generator, e.g. actinic radiation, the polyenes of the instant invention in combination with a polythiol form a solid, insoluble, crosslinked polythioether product.

Abstract: This invention is directed to a process for forming a wettable battery separator comprising a non-woven mat of polyolefin fiber by forming a non-woven mat of polyolefin fiber having a thickness in the range 10 to 40 mils and pore sizes less than 40 microns, contacting the mat with an aqueous solution of a water soluble peroxy compound, e.g. hydrogen peroxide or potassium persulfate at a temperature below 70.degree. C., rinsing the mat in water and thereafter immersing the thus treated mat in an aqueous solution of a hydrophilic vinyl monomer such as acrylic, methacrylic, vinyl sulfonic acid, said solution containing a redox catalyst, e.g. an ion of a transition metal, e.g. ferrous, cerous, cobaltous, or an organic amine, thereby causing a graft polymerization of said hydrophilic vinyl monomer on said polyolefin mat to give a wettable polyolefin battery separator.

Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.

Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.

Abstract: This invention is directed to polyenes derived from hydantoin acids, amines and esters. The polyene is typically a reaction product of a hydantoin amine, e.g., N,N'-bis(3-aminopropyl)-dimethylhydantoin, a diisocyanate and an unsaturated ether, e.g., trimethylolpropane diallyl ether. Upon exposure to a free radical generator, e. g., actinic radiation, in combination with a polythiol, this polyene cures to a solid, insoluble, chemically resistant, crosslinked polythioether product having excellent heat stability.

Abstract: This invention relates to a strippable coating process and a coating composition therefor comprising (1) a latex, (2) a coagulant for said latex and (3) a debonding agent consisting essentially of a substantially non-volatile additive which is adhesive to at least one of either the coated substrate or coagulated coating, more soluble in water than in the coagulated latex polymer component and having a solubility parameter at least 2(calories/cc).sup.1/2 higher than the coagulated latex polymer component.The protective coating is formed by impinging a stream of a latex and a stream of a coagulant, the two streams being oppositely charged, onto a substrate. After drying an external debonding agent is applied between the coating and the substrate and thereafter the coating is stripped from the substrate.

Abstract: This invention is directed to novel halogen-containing polythiols which impart improved flame retardancy to radiation cured thiol-ene compositions.

Abstract: This invention relates to polyenes containing at least two ethylenically unsaturated bonds per molecule formed by reacting in substantially stoichiometric amounts, (1) a primary diamine, (2) a member of the group consisting of a benzenoid-containing dianhydride, acid anhydride and anhydride acid halide and (3) an ethylenically unsaturated alcohol. The thus formed amide-acid polyene either per se or after being cured in combination with a polythiol in the presence of a free radical generator will, upon heating, imidize.

Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.

Abstract: This invention relates to compositions of the formula: ##STR1## wherein n is 0 to 2 and at least 1 and not more than 2n + 2 of the A groups are ester radicals of the structure ##STR2## wherein R is a straight chain or branched, saturated or unsaturated hydrocarbon radical containing 11 to 19 carbon atoms and at least 2 and not more than 2n + 3 of the A groups are ester radicals of the structure ##STR3## wherein m is 0 to 1. The composition is formed by reacting one mole of a mono, di- or tri-pentaerythritol of the formula: ##STR4## WHEREIN N IS 0-2 WITH 2N + 4 MOLES OF A MIXTURE OF MONOCARBOXYLIC ACIDS FROM THE GROUP CONSISTING OF (A) AT LEAST 1 AND NOT MORE THAN 2N + 2 MOLES OF RCOOH wherein R is a straight chain or branched, saturated or unsaturated hydrocarbon radical containing 11 to 19 carbon atoms and (b) at least 2 and not more than 2n + 3 of HSCH.sub.2 (CH.sub.2).sub.m COOH wherein m is 0 to 1.

Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic ahydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.

Abstract: A thermosetting resin composition consisting essentially of a solid epoxy resin having a molecular weight in the range 1,000-4,000, 1-15% by weight of the epoxy resin of a curing agent therefor and 0.5 to 3.0% by weight of the composition of a flow control agent consisting essentially of liquid poly(ethyl acrylate) having a number average molecular weight in the range 5,000 to 15,000. The composition when melt compounded and milled to an average particle size diameter of 2-20 microns can be electrostatically deposited onto metallic surfaces such as can interiors to produce an ultra thin (0.3-1.0 mil thick) protective coating on curing.

Abstract: This invention is directed to thiol containing compounds having no hydrolytically sensitive groupings which are useful as polymerization transfer agents or as curing agents in curable polymer systems containing polyenes and a free radical initiator. The thiol containing compounds are formed by reacting a polyol with an allylic halide to form a poly(unsaturated ether) whose double bonds are converted to thioesters by free radical catalyzed addition of SH groups from a thiolcarboxylic acid, e.g. thioacetic acid and the like. Hydrolysis of the thioester yields the desired thiol or polythiol derivative. Alternatively the poly(unsaturated ether) is reacted with H.sub.2 S to give the desired thiol or polythiol directly in a single step. The polythiols can be chain extended by any difunctional compound that reacts with the hydroxy groups on the polythiol.

Abstract: The invention disclosed is a method for preparing new improved polyureas from polyisocyanates and polyamines. The product polyureas are characteristically tough, abrasion resistant resins having broad spectrum utility.