Patent ID: 6703435
Filing Date: 2004-03-09
Classification: C08F,C08J,C08L,H01B

Abstract:
A method of producing a composition based on a polymer crosslinked using a silane, the method comprising the following operations:a) mixing: i) a thermoplastic base polymer or a mixture of thermoplastic base polymers containing a flame retarding filler; ii) a carrier polymer for a silane-based crosslinking agent, said carrier polymer being solid and selected from porous sponge type polymers, swellable polymers, and encapsulates, which carrier polymer is soluble or dispersible in said base polymer and does not react with the silane; and iii) a free radical generator; b) heating said mixture; and c) exposing said mixture to a sufficient quantity of water to allow said base polymer to crosslink; wherein, during the heating operation, said mixture is heated to a temperature to cause said free radical generator to decompose without decomposing said filler, said free radical generator being selected so that its absolute decomposition temperature is less than 165Â° C., and wherein said crosslinking operation is carried out in an ambient atmosphere.