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1. (WO1991009065) STEREOREGULAR CYCLO-OLEFINIC POLYMERS AND METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009065 International Application No.: PCT/US1990/006836
Publication Date: 27.06.1991 International Filing Date: 21.11.1990
Chapter 2 Demand Filed: 11.07.1991
IPC:
C08F 36/20 (2006.01) ,C08G 61/00 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
36
Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
02
the radical having only two carbon-to-carbon double bonds
20
unconjugated
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
61
Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
Applicants:
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY [US/US]; 857 Serra Street, Second Floor Stanford, CA 94305-6225, US
Inventors:
WAYMOUTH, Robert, M.; US
Agent:
SIEBERT, J., Suzanne ; Majestic, Parsons, Siebert & Hsue Four Embarcadero Center Suite 1450 San Francisco, CA 94111-4121, US
Priority Data:
452,72119.12.1989US
Title (EN) STEREOREGULAR CYCLO-OLEFINIC POLYMERS AND METHOD
(FR) POLYMERES CYCLO-OLEFINIQUES STEREOREGULIERS ET PROCEDE
Abstract:
(EN) Homogeneous catalyst systems are provided for cyclopolymerization of diolefins, particularly 1,5-hexadiene, which control the stereochemistry, microstructure, and physical properties of the polymers synthesized. The systems comprise homogeneous Ziegler-Natta catalysts based on group 4 metallocenes and methylalumoxane. The cyclopolymers synthesized exhibit different degrees of stereoregularity, which is a function of the polymerization conditions. In addition, the polyolefins can be chiral and optically active. The polymers produced are of high molecular weight and highly flexible.
(FR) Systèmes catalyseurs homogènes pour la cyclopolymérisation de dioléfines, particulièrement de 1,5-hexadiène, réglant la stéréochimie, la microstructure et les propriétés physiques des polymères synthétisés. Les systèmes comprennent des catalyseurs homogènes Ziegler-Natta à base d'alliages organométalliques du groupe 4 et de méthylalumoxane. Les cyclopolymères synthétisés présentent des degrés différents de stéréorégularité, laquelle est fonction des conditions de polymérisation. De plus, les polyoléfines peuvent être chirales et actives sur le plan optique. Les polymères produits ont un poids moléculaire élevé et sont très souples. .
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)