Patent ID: 6239187
Filing Date: 2001-05-29
Classification: C08G,C08J,C08L

Abstract:
A foam comprising a polymer wherein the polymer comprises a homopolymer of any one of monomers (I) to (VI) or a copolymer of any one of monomers (I) to (VI) and (VII) or a copolymer of any one of monomers (I) to (VI) and (VIII), or a terpolymer of any one of monomers (I) to (VI) and (VII) and (VIII), wherein said polymer is produced by polymerization in the presence of a metallocene catalyst, the monomers are of the formula I, II, III, IV, V, VI, VII, and VIII as follow: ##STR6##where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are identical or different and are each a hydrogen atom, a linear or branched, saturated or unsaturated C.sub.1 -C.sub.20 -alkyl radical, C.sub.6 -C.sub.18 -aryl radical, C.sub.7 -C.sub.20 -alkylenearyl radical, a cyclic or acyclic C.sub.2 -C.sub.20 -alkenyl radical, or form a saturated, unsaturated or aromatic ring, where the same radicals R.sup.1 to R.sup.8 in the various formulae I to VI can have different meanings, where n is an integer from 0 to 5, and from 0 to 99.9% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units which are derived from one or more acyclic olefins of the formula VII ##STR7##where R.sup.9, R.sup.10, R.sup.11 and R.sup.12 are identical or different and are each a hydrogen atom, a linear, branched, saturated or unsaturated C.sub.1 -C.sub.20 -hydrocarbon radical or a C.sub.6 -C.sub.18 -aryl radical, and from 0 to 99.9% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units of one or more monocyclic olefins of the formula VIII ##STR8##where n is a number from 2 to 10.