Patent ID: 6767966
Filing Date: 2004-07-27
Classification: C08G,C08J

Abstract:
A polymer mixture with improved relaxation behavior and improved shrinkage behavior, comprising at least one cycloolefin polymer and at least one amorphous cycloolefin polymer, wherein the cycloolefin polymer contains from 0.1 to 100% by weight, based on the total weight of the cycloolefin polymer, of polymerized units which are made from at least one polycyclic olefin of the formulae I, II, IIâ€², III, IV, V or VI wherein R1, R2, R3, R4, R5, R6, R7, and R8 are identical or different and are a hydrogen atom or C1-C20-hydrocarbon radical, or from a saturated, unsaturated, or aromatic ring, where the same radicals R1 to R8 in the various formulae I to VI may have a different meaning, and where n is from 0 to 5, and containing from 0 to 99.9% by weight, based on the total weight of thecycloolefin copolymer, of polymerized units which are made from one or more acyclic olefins of the formula VII wherein R9, R10, R11, and R12 are identical or different and are a hydrogen atom, or a linear or branched, saturated or unsaturated C1-C20-hydrocarbon radical.