US5008356A Expired / Lapsed US ⏱️ 0.0 years remaining

Cyclo-olefinic random copolymer, olefinic random copolymer, and process for producing cyclo-olefinic random copolymers

Assignee: Mitsui Chemicals Inc

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Filing: 1989-05-31

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Granted: 1991-04-16

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Expires: 2009-05-31

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Abstract

Abstract A cyclo-olefinic random copolymer composed of an alpha-olefin component having 3 to 20 carbon atoms and a cyclo-olefin component, (i) said copolymer containing 5 to 99 mole % of recurring units derived from said alpha-olefin component having 3 to 20 carbon atoms and 1 to 95 mole % of recurring units derived from said cyclo-olefin component, and (ii) said copolymer having an intrinsic viscosity [η], measured in decalin at 135° C., of from 0.01 to 10 dl/g; and an olefinic random copolymer composed of (A) an olefin component having 3 to 20 carbon atoms and (B) a cyclic polyene component and as required, (C) a cyclo-olefin component, (i) said copolymer containing 5 to 99 mole % of recurring units derived from said alpha-olefin component (A) having 3 to 20 carbon atoms and 1 to 95 mole % of recurring units derived from said cyclic polyene component (B) and 0 to 90 mole % of recurring units derived from said cyclo-olefin component (C), and (ii) said copolymer having an intrinsic viscosity [η], measured in decalin at 135° C., of from 0.01 to 10 dl/g; and a process for production thereof. Also provided is a process for producing a cyclo-olefinic random copolymer, which comprises copolymerizing an alpha-olefin and a cyclo-olefin in the presence of a catalyst formed from (A) a compound of a transition metal of Group IVB of the periodic table having as a ligand a multidentate coordination compound in which at least two conjugated cycloalkadienyl groups or substituted products thereof are bonded via a lower alkylene group, and (B) an aluminoxane.

Inventors

👤 Naoshi Ishimaru
👤 Toshiyuki Tsutsui
👤 Akinori Toyota
👤 Norio Kashiwa

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-11-08 20:29

CPC Classifications

C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F232/00; C08F210/00; C08F210/04; C08F210/06; C08F210/14; C08F4/659; C08F4/65912; C08F4/6592; C08F4/65922; C08F4/65927; Y; Y10; Y10S; Y10S526/00; Y10S526/943

Claims Analysis

Total Claims: 10

Claim 1

Independent Claim 69 words

A process for producing a cyclo-olefinic random copolymer, which comprises copolymerizing an alpha-olefin and a cyclo-olefin in the presence of a catalyst formed from (A) a compound of a transition metal of Group IVB of the periodic table having as a ligand a multidentate coordination compound in which at least two conjugated cycloalkadienyl groups or substituted products thereof are bonded via a lower alkylene group, and (B) an aluminoxane.

Claim 2

Dependent Claim 69 words

Claim 3

Dependent Claim 39 words

The process of claim 1 wherein the transition metal compound is a zirconium compound containing as a ligand at least two indenyl groups or substituted indenyl groups or partially hydrogenated groups thereof which are bonded via an alkylene group.

Claim 4

Dependent Claim 33 words

The process of claim 2 wherein the aluminoxane is an organoaluminum compound represented by the general formula ##STR48## wherein R represents a hydrocarbon group, and m represents an integer of at least 2.

Claim 5

Dependent Claim 23 words

The process of claim 3 wherein R is a methyl, ethyl or isobutyl group, and m is an integer of at least 5.

Claim 6

Dependent Claim 20 words

The process of claim 3 wherein R is a methyl group and m is an integer of 5 to 50.

Claim 7

Dependent Claim 13 words

The process of claim 2 wherein the transition metal compound is ethylenebis(indenyl)zirconium dichloride.

Claim 8

Dependent Claim 28 words

The process of claim 3 wherein the alpha-olefin is selected from ethylene, propylene and 4-methyl-1-pentene, and the cyclo-olefin is selected from tetracyclododecene, 2-methyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2,3-dimethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 5-methyl-2-norbornene, norbornene and 5-ethylidene-2-norbornene.

Claim 9

Dependent Claim 28 words

The process of claim 4 wherein the alpha-olefin is selected from ethylene, propylene and 4-methyl-1-pentene, and the cyclo-olefin is selected from tetracyclododecene, 2-methyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2,3-dimethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 5-methyl-2-norbornene, norbornene and 5-ethylidene-2-norbornene.

Claim 10

Dependent Claim 28 words

The process of claim 6 wherein the alpha-olefin is selected from ethylene, propylene and 4-methyl-1-pentene, and the cyclo-olefin is selected from tetracyclododecene, 2-methyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2,3-dimethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 5-methyl-2-norbornene, norbornene and 5-ethylidene-2-norbornene.

References Cited (Backward Citations)

US3242099A Cited

US3478002A Cited

US4614778A Cited

US4769510A Cited

JPS61221206A Cited

US4701432A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-04-15	1994-10-15	1995-04-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-04-15	1998-10-15	1999-04-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-04-15	2002-10-15	2003-04-16	$7700.00	Window Closed / Lapsed

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