Abstract: A process for extruding a hydrolyzable particulate thermolastic copolymer coated with an organic peroxide, which, under extrusion conditions, will provide essentially no crosslinking per se, but will decompose to provide a silanol condensation catalyst, including passing the coated copolymer through an extruder having a die at about its downstream end with the proviso that the extruder is operated under such conditions that (i) the temperature of the extruder before the die is maintained at a level sufficient to extrude the copolymer, but below the decomposition temperature of the organic peroxide; (ii) the temperature of the extruder at or after the die is maintained at or above the decomposition temperature of the peroxide; and (iii) there is sufficient moisture in the environment to crosslink the copolymer in the presence of a silanol condensation catalyst.

Abstract: Process of producing a foamed product by forming a shaped article from a composition comprising a thermoplastic olefin polymer, a hydrolyzable, unsaturated silane, a gas generating compound and an organic peroxide in an amount of about 0.5 to about 2 percent by weight, and thereafter subjecting the shaped article to elevated temperatures to activate the gas generating compound and organic peroxide.

Abstract: 1. A heat and water tree resistant composition comprising:(a) a copolymer of ethylene and an alpha-olefin having 4 to 8 carbon atoms, said copolymer having a density equal to or less than 0.91 gram per cubic centimeter; and(b) a polyethylene glycol having a molecular weight in the range of about 1000 to about 20,000 in an amount of about 0.1 to about 20 percent by weight based on the weight of the copolymer.

Abstract: An elastomer blend comprising:(a) a polyolefin selected from the group consisting of (i) polyethylene; (ii) a hydrolyzable copolymer of ethylene and silane; and (iii) a hydrolyzable silane modified polyethylene; and(b) an ethylene-propylene-diene terpolymer rubber, with or without silane modification, said terpolymer when silane modified being hydrolyzable, provided that, when component (a) is polyethylene, the terpolymer is silane modified,the blend of components (a) and (b) having the following physical properties:(i) Secant Modulus in the range of about 100 psi to about 10,000 psi;(ii) 100% Modulus in the range of about 100 psi to about 1500 psi; and(iii) Shore A hardness in the range of about 10 to about 100.

Abstract: A foamable composition comprising a polymer selected from the group consisting of a hydrolyzable ethylene/silane copolymer and a hydrolyzable ethylene/ethyl acrylate/silane terpolymer and the following components in about the following amounts per 100 parts by weight of polymer:______________________________________ Component Parts by Weight ______________________________________ azodicarbonamide 1 to 25 p,p'oxybis-benzene 0.5 to 3.5 sulfonyl hydrazide silanol condensation catalyst 0.02 to 0.

Abstract: A roofing membrane composition comprising:(a) a first hydrolyzable polyolefin having a density less than or equal to 0.92 selected from the group consisting of (i) a copolymer of ethylene or propylene and silane and (ii) a silane modified polyethylene, polypropylene, or ethylene/propylene copolymer wherein, in (i) or (ii), the silane is present in an amount of about 0.

Abstract: Olefin polymer foams having improved cell structures and relatively smooth outer surfaces produced by foaming a composition containing a thermoplastic olefin polymer, p,p'-oxybis-benzene sulfonyl hydrazide, a monomeric acrylate ester of a polyhydric compound and an organic peroxide. These foams can be formed into shaped articles of desired configuration by conventional thermoforming molding techniques.