专利名称：ULTRA-HIGH-MOLECULAR-WEIGHT
ETHYLENIC COPOLYMER
weight和weight的区别
发明人：HAYASHI TAKASHI,SHIRAKI TAKESHI,KATO AKIFUMI
申请号：JP19597885
申请日：19850906
公开号：JPH0586803B2
公开日：
19931214
专利内容由知识产权出版社提供
摘要：PURPOSE:The titled novel polymer having relatively low density, improved transparency and impact resistance and high strength and high elasticity, having a specific composition, density, crystallinity and modulus in flexure. CONSTITUTION:The aimed copolymer, an ultra-high-molecular-weight ethylenic copolymer derived from ethylene and 3-20C alpha-olefin, comprising (A) 85-99mol%, preferably 90-99mol% polymer unit content derived from ethylene and 1-15mol%, preferably 1-10mol% polymer unit content derived from 3-20C alpha-olefin based on polymer units derived from ethylene and 3-20C alpha-olefin, having (A) a density of 0.880-0.930g/cm<3>, preferably 0.88-
0.925g/cm<2>, (C) crystallinity of <=65%, preferably 35-65% and (D) a modulus in flexure of 500-4,000kg/cm<2>, preferably 1,000-4,000kg/cm<2>.
申请人：MITSUI PETROCHEMICAL IND
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