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公开(公告)号:US4087602A
公开(公告)日:1978-05-02
申请号:US687872
申请日:1976-05-19
申请人: Franz Georg Mietzner , Oskar Buechner , Klaus Steigerwald , Gottfried Schlichthaerle , Friedrich Urban
发明人: Franz Georg Mietzner , Oskar Buechner , Klaus Steigerwald , Gottfried Schlichthaerle , Friedrich Urban
CPC分类号: B01J8/005 , C08F10/02 , C08F110/02
摘要: A process for the manufacture of ethylene polymers by homopolymerization and copolymerization of ethylene at pressures of from 500 to 5,000 bars and at from 50.degree. to 450.degree. C, with subsequent isolation of the polymers in high pressure product isolation zones and low pressure product isolation zones. The various parallel product isolation zones are at different temperatures, and the mean product residence times in the zones may be identical or different. Very different products, in amounts which can be chosen according to requirements, and with mutually independent polymer properties, can be obtained using only one high pressure polymerization system.
摘要翻译: 一种通过乙烯在500至5,000巴和50至450℃的压力下均聚和共聚制备乙烯聚合物的方法,随后在高压产物隔离区和低压产物隔离区中分离聚合物 。 各种平行产品隔离区处于不同的温度,并且区域中的平均产物停留时间可以相同或不同。 只有一个高压聚合体系可以获得非常不同的产品,其量可以根据要求选择,并且具有相互独立的聚合物性质。
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公开(公告)号:US3937772A
公开(公告)日:1976-02-10
申请号:US151392
申请日:1971-06-09
CPC分类号: B29B7/002 , B29B7/7457
摘要: Production of a homogeneous mixture of plastics materials in powder form by subjecting a molten inhomogeneous mixture of two or more plastics to a maximum shear velocity of from 10.sup.4 to 10.sup.8 sec.sup.-.sup.1 for from 10.sup..sup.-2 to 10.sup..sup.-6 seconds; the pulverulent mixtures obtained are used in rotary sintering and injection molding.
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