Patent ID: 6534586
Filing Date: 2003-03-18
Classification: C08K,C08L

Abstract:
A flame-retardant rubber composition comprising:(A) an olefin copolymer having a functional group, which comprises (a-1) a structural unit derived from ethylene, (a-2) a structural unit derived from an &agr;-olefin compound having 3 to 10 carbon atoms, (a-3) a structural unit derived from a functional group-containing unsaturated compound, and optionally (a-4) a structural unit derived from a nonconjugated diene compound, and has an intrinsic viscosity(&eegr;) of 0.1 to 10 DL/g as measured in decahydronaphthalene at 135Â° C.; (B) a vulcanizing agent and/or a crosslinking agent; and (C) a nonhalogenated flame retardant, wherein the structural unit (a-3) in the olefin copolymer (A) having the functional group is derived from a compound represented by the following formula (2) wherein R3 means a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, Y1, Y2 and Y3 denote, independently of one another, a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms or a functional group represented by â€”OR2, â€”COOH, â€”NHR2 or â€”CONHR2 (R2 being a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms), at least one of Y1, Y2 and Y3 is the functional group, at least two of Y1, Y2 and Y3 may be an acid anhydride group (â€”COâ€”Oâ€”COâ€”) or an imide group (â€”COâ€”NHâ€”COâ€”) formed by being bonded to each other when they are the functional groups, p is an integer of 0 to 2, and q is an integer of 0 to 5.