Nova Patents
NO850795L

Olefin polymerization process

Abstract

A process for the polymerization of an alpha monoolefin in the presence of certain supported coordination catalysts systems which comprise (a) a procatalyst, (b) a cocatalyst and, (c) a selectivity control agent, wherein… (a) is a solid composition comprising magnesium chloride, titanium tetrachloride, and an electron donor;… (b) is an aluminium trialkyl; and… (c) is a combination of a strong selectivity control agent and a weak selectivity control agent.

Term

No projected expiry on record.

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30 members in 20 offices

This recordMember, by publication datePriority claim10 more offices are in the list below

Priority claims3

Priority claims
DocumentOfficeKindDate
58441684United States of AmericaA
584416–––
US19840584416–––

Members30

Family members, oldest first
DocumentOfficeKind
PT80007APortugalA
NO850795LThis recordNorwayL
AU3906985AAustraliaA
EP0155716A1European Patent Office (EPO)A1
BR8500856ABrazilA
JPS60203606AJapanA
KR850006685ARepublic of KoreaA
ZA851398BSouth AfricaB
US4563512AUnited States of AmericaA
DD232054A5German Democratic Republic (until 1990)A5
PT80007BPortugalB
ES540732A0SpainA0
ES8701199A1SpainA1
CN85101441AChinaA
NZ211239ANew ZealandA
AU568424B2AustraliaB2
EP0155716B1European Patent Office (EPO)B1
AT33395TAustriaT
ATE33395T1AustriaT1
DE3562093D1GermanyD1
IN162460BIndiaB
CA1240099ACanadaA
CN1004135BChinaB
NO163532BNorwayB
HK28790AHong Kong, ChinaA
NO163532CNorwayC
SG6590GSingaporeG
KR920010276B1Republic of KoreaB1
AR242226A1ArgentinaA1
JPH072779B2JapanB2