Polymerisation catalysts

Details Polymerisation catalysts Polymerisation catalysts

2011-03-08

2011-03-08

Lee, Rip A. (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S172000, C526S134000, C526S169000, C526S169200, C526S348000, C526S348200, C526S348500, C526S348600, C526S351000, C526S352000, C526S346000, C526S344000, C526S318000, C526S335000

Reexamination Certificate

active

07902308

ABSTRACT:
A complex compound comprising the skeletal unit of Formula A,wherein the ring represented by C(R1)-A1-A2-(A3)x-C(R2)—C— has delocalised unsaturation and is optionally substituted via one or more of A1, A2and A3with atoms or groups selected from hydrogen, alkyl, aryl, halogen, or heterocyclic groups containing at least one N, S or O in a carbon ring; A1, A2and A3are selected from carbon, nitrogen or oxygen, R1and R2are each selected from chlorine, bromine or iodine; x is zero or 1, O is oxygen, E is nitrogen, phosphorus or arsenic, Q represents a divalent bridging group comprising one or more Group 14 atoms; M is a metal selected from Groups 3 to 7; X represents a monovalent atom or group covalently or ionically bonded to M; L is a mono- or bidentate molecule datively bound to M, y satisfies the valency of M and z is from 0 to 5. The complex can be used to polymerise olefins optionally with organo-A1 or -B compounds as activator.

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Form PCT/IB/326, Int'l Preliminary Report on Patentability and Written Opinion of the Int'l Searching Authority, PCT International Application No. PCT/GB2006/003430; International Filing Date Sep. 15, 2006 (11 pgs).
Chemical Abstracts Service, Columbus, OH; Matsui, Shigekazu et al; “Transition metal compounds and catalysts and method for polymerization of olefins”; XP002370222 & JP 2000 086677, Mar. 28, 2000 (4 pgs).
Oakes, Daniel C.H., et al; “The surprisingly beneficial effect of soft donors on the performance of early transition metal olefin polymerisation catalysts”; Chemical Communications; pp. 2174-2175 (2004).

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