Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (4) optionally a tackifying resin such as a glyceryl ester of a rosin acid.

Abstract: A process for preparing polyurethane with integral skin, wherein a composition comprising following ingredients: polyol, polyisocyanate, at most one part by weight of water to 100 parts by weight of polyol and catalyst, is reacted in a mould so that a polyurethane is formed, characterized in that one uses a polyisocyanate the NCO groups of which are not directly bonded to an aromatic group and, as catalyst, at least one of the following four synergistic combinations:(1) at least an amine containing the structure: ##STR1## in association with at least an alkali metal or alkaline-earth metal salt, alcoholate and/or phenolate of an acid the dissociation constant of which Ka.ltoreq.10.sup.-1, preferably Ka.ltoreq.10.sup.

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

Abstract: A process for preparing a flame retardant thermoplastic resin composition which comprises heat mixing and kneading 100 parts by weight of a mixture consisting of a hydroxyl-terminated low molecular weight thermoplastic polyester (A) and a polyfunctional isocyanate (B), or a reaction product of (A) and (B), with 1.5- 25 parts by weight, calculated as halogen, of a specific halogenated epoxy compound, 0.3-15 parts by weight, calculated as antimony, of an antimony compound, and, as the case may be, 0-10 parts by weight of asbestos, and/or 0-60% by weight, based on the total weight of the resin composition obtained, of glass fibers.

Abstract: The present invention relates to a process wherein certain phosphonium salt compounds, such as, n-butyltriphenylphosphonium bromide, are utilized as catalysts in the preparation of carbodiimides from organic-isocyanates under certain specified conditions.

Abstract: A light stable polyurethane elastomer is prepared in the absence of solvent from a polyol, a chain extender and an aliphatic polyisocyanate using a thio tin organic compound, containing sulfur directly attached to the tin, as a heat activated catalyst. E.g., a solventless liquid composition comprising an hydroxy-terminated polyester, a chain extender, and hydrogenated MDI, containing dibutyltin S,S-bis(isooctyl mercaptoacetate) as a catalyst, has a pot life in excess of 25 minutes at room temperature but upon heating 1 minute at 375.degree.F. gels to a solid state. Because of this combination of long pot life and rapid cure, the composition is suitable for such applications as making coated fabrics and films, and in other liquid processing techniques, e.g., rotational casting, liquid injection molding, and the like.

Abstract: Thermosetting acrylic emulsions having more favorable curing properties are provided using reactive monomers in the largely acrylic emulsion copolymer, at least one-third of these reactive monomers being an N-methylol derivative of an allyl carbamate.