US5229464A
Expired / Lapsed
US
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Epoxidized viscous conjugated diene block copolymers
Assignee: Kraton Polymers US LLC
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Filing: 1991-04-29
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Granted: 1993-07-20
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Expires: 2011-04-29
Abstract
Abstract A viscous block copolymer of the formula (A--B--A).sub.n --Y.sub.r --(A.sub.q --B).sub.m wherein Y is a coupling agent or coupling monomers, and wherein A and B are polymer blocks which may be homopolymer blocks of conjugated diolefin monomers, copolymer blocks of conjugated diolefin monomer or copolymer blocks of conjugated diolefin monomers and monoalkenyl aromatic hydrocarbon monomers, and wherein the A blocks have a higher number of aliphatic double bonds between a tertiary carbon atom and either a primary or secondary carbon atom per unit of block mass than do the B blocks, and wherein the A blocks have a molecular weight from about 100 to about 3000 and the B blocks have a molecular weight from about 1000 to about 15,000, and wherein p and q are 0 or 1 and n>0, r is 0 or 1, m≧0 and n+m ranges from 1 to 100. This block copolymer is preferably partially hydrogenated, epoxidized and crosslinked through at least some of the epoxy functionality to form an adhesive, coating or sealant composition.
Inventors
- 👤 James R. Erickson
- 👤 David J. St. Clair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/044; C08F8/00; C08F8/04; C08F8/08; C08J; C08J3/00; C08J3/28; C08L; C08L63/00; C08L63/08; C09; C09D; C09D153/00; C09D153/02; C09D153/025; C09J; C09J153/00; C09J153/02; C09J153/025; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/20; C08J2353/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
143 words
A viscous block copolymer of the formula (A--B--A).sub.n -Y.sub.r --(A.sub.q --B).sub.m wherein Y is a coupling agent or coupling monomers, and wherein A and B are polymer blocks may be homopolymer blocks of conjugated diolefin monomers, copolymer blocks of conjugated diolefin monomers or copolymer blocks of conjugated diolefin monomers and monoalkenyl aromatic hydrocarbon monomers, and wherein the A blocks have a greater number of tertiary unsaturation (TU) sites per unit of block mass than do the B blocks, and wherein the A blocks have a molecular weight from 100 to 3000 and the B blocks have a molecular weight from 1000 to 15,000, and wherein p and q are 0 or 1 and n>0, r is 0 or 1, m≧0 and n+m ranges from 1 to 100; and wherein the copolymer is epoxidized such that 0.1 to 3 Meq/g of epoxide is present.
Claim 2
Dependent Claim
143 words
A viscous block copolymer of the formula (A--B--A).sub.n -Y.sub.r --(A.sub.q --B).sub.m wherein Y is a coupling agent or coupling monomers, and wherein A and B are polymer blocks may be homopolymer blocks of conjugated diolefin monomers, copolymer blocks of conjugated diolefin monomers or copolymer blocks of conjugated diolefin monomers and monoalkenyl aromatic hydrocarbon monomers, and wherein the A blocks have a greater number of tertiary unsaturation (TU) sites per unit of block mass than do the B blocks, and wherein the A blocks have a molecular weight from 100 to 3000 and the B blocks have a molecular weight from 1000 to 15,000, and wherein p and q are 0 or 1 and n>0, r is 0 or 1, m≧0 and n+m ranges from 1 to 100; and wherein the copolymer is epoxidized such that 0.1 to 3 Meq/g of epoxide is present.
Claim 3
Dependent Claim
23 words
The block copolymer of claim 1 wherein the copolymer is crosslinked through at least some of the epoxy functionality by exposure to radiation.
Claim 4
Dependent Claim
20 words
The block copolymer of claim 1 wherein the copolymer is chemically crosslinked through at least some of the epoxy functionality.
Claim 5
Dependent Claim
29 words
The block copolymer of claim 1 which is partially hydrogenated such that the amount of aliphatic double bonds remaining in the copolymer is from 0.1 to 3 Meq/g polymer.
Claim 6
Dependent Claim
30 words
The block copolymer of claim 4 which has been epoxidized such that the amount of aliphatic double bonds in the copolymer has been reduced to 0.5 Meq/g polymer or less.
Claim 7
Dependent Claim
23 words
The block copolymer of claim 5 wherein the copolymer is crosslinked through at least some of the epoxy functionality by exposure to radiation.
Claim 8
Dependent Claim
20 words
The block copolymer of claim 5 wherein the copolymer is chemically crosslinked through at least some of the epoxy functionality.
Claim 9
Dependent Claim
23 words
The block copolymer of claim 7 wherein the copolymer is crosslinked through at least some of the epoxy functionality by exposure to radiation.
Claim 10
Dependent Claim
20 words
The block copolymer of claim 7 wherein the copolymer is chemically crosslinked through at least some of the epoxy functionality.
Claim 11
Dependent Claim
10 words
An adhesive composition comprising the block copolymer of claim 2.
Claim 12
Dependent Claim
10 words
An adhesive composition comprising the block copolymer of claim 3.
Claim 13
Dependent Claim
10 words
An adhesive composition comprising the block copolymer of claim 8.
Claim 14
Dependent Claim
10 words
An adhesive composition comprising the block copolymer of claim 9.
Claim 15
Dependent Claim
31 words
The block copolymer of claim 7 which has been epoxidized such that the amount of aliphatic double bonds in the copolymer has been reduced to about 0.2 Meq/g polymer or less.
Claim 16
Dependent Claim
23 words
The block copolymer of claim 14 wherein the copolymer is crosslinked through at least some of the epoxy functionality by exposure to radiation.
Claim 17
Dependent Claim
20 words
The block copolymer of claim 14 wherein the copolymer is chemically crosslinked through at least some of the epoxy functionality.
Claim 18
Dependent Claim
22 words
The block copolymer of claim 1 which has been epoxidized such that about 0.1 to about 1.5 Meq/g of epoxide is present.
Claim 19
Dependent Claim
22 words
The block copolymer of claim 7 which has been epoxidized such that about 0.1 to about 1.5 Meq/g of epoxide is present.
Claim 20
Dependent Claim
20 words
A pressure sensitive adhesive tape comprising a flexible backing sheet and a layer of the adhesive composition of claim 2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |