Patent ID: 6632541
Filing Date: 2003-10-14
Classification: C08L,Y10T

Abstract:
An olefin-based copolymer composition comprising the following component (a) in combination with any one component selected from the following components (b) to (i):(a) an olefin-based copolymer obtained by copolymerizing two or more olefins, wherein the olefins are selected from the group consisting of ethylene, propylene and &agr;-olefins having 4 to 20 carbon atoms, and the total number of carbon atoms of the two or more selected olefins is 6 or more, wherein (a) has an intrinsic viscosity [&eegr;] measured using a tetralin solvent at 135Â° C. of about 0.3 to about 10; (b) a crystalline &agr;-olefin-based polymer comprising polymerized monomer units of an &agr;-olefin having 3 or more carbon atoms; (c) about 5-10% by weight of component (c) based on the total weight of the components (a) to (i) wherein (c) represents the following component (c-1) and/or component (c-2), (c-1) a block copolymer comprising (cH) a polymer block containing polymerized units of a vinyl aromatic compound and (cS) a polymer block containing polymerized units of a conjugated diene compound, (c-2) a hydrogenated product of the block copolymer recited in (c-1); (d) the component (b) in combination with an isobutylene-isoprene copolymer rubber and/or halogenated isobutylene-isoprene copolymer rubber; (e) the component (b) in combination with a tackifier resin; (f) the component (b), a component (f-1) which is an ethylene-propylene (non-conjugated diene) random copolymer rubber, and a component (f-2) which is an inorganic filler; (g) a component (g-1) and/or (g-2), (g-1) a benzotriazole light stabilizer having a benzotnazole skeleton and having a molecular weight of 100 to 5,000, (g-2) a hindered amine light stabilizer having a piperidyl group in its molecular skeleton and having a molecular weight of about 200 or more; (h) the component (f-1) in combination with the component (b) and/or an ethylene-based polymer having an ethylene content of 90 mol % or more; and (i) the component (b) and the inorganic filler (f-2) wherein component (a) has neither a peak of one J/g or more based on melting of a crystal nor a peak of one J/g or more based on crystallization, when measured by a differential scanning calorimetry (DSC) techniques, and said composition contains a component (c).