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Patent US4578429A successfully refreshed from Google Patents.
US4578429A
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US
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Selectively hydrogenated block copolymers modified with acid compounds or derivatives
Assignee: Kraton Polymers US LLC
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Filing: 1984-08-31
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Granted: 1986-03-25
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Expires: 2004-08-31
Abstract
Abstract The present invention relates to a thermally stable modified selectively hydrogenated high 1,2 content block copolymer wherein at least one acid compound is grafted to the block copolymer at a secondary or tertiary carbon position.
Inventors
- 👤 William P. Gergen
- 👤 Robert G. Lutz
- 👤 Richard Gelles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:14
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C08L53/025
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
147 words
A functionalized selectively hydrogenated block copolymer of the formula ABA to which has been grafted an acid compound or its derivative wherein, (1) each A is predominantly a polymerized monoalkenyl aromatic hydrocarbon block having an average molecular weight of about 2,000 to 115,000; (2) each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block having an average molecular weight of about 20,000 to 450,000; (3) the blocks A constituting 5-95 weight percent of the copolymer; (4) the unsaturation of the block B is less than 10% of the original unsaturation; (5) the unsaturation of the A blocks is above 50% of the original unsaturation; (6) and substantially all of the acid compounds or their derivatives are grafted to the block copolymer at secondary or tertiary carbon positions in the B blocks; (7) and wherein said acid compounds and their derivatives are not easily polymerizable.
Claim 2
Dependent Claim
147 words
A functionalized selectively hydrogenated block copolymer of the formula ABA to which has been grafted an acid compound or its derivative wherein, (1) each A is predominantly a polymerized monoalkenyl aromatic hydrocarbon block having an average molecular weight of about 2,000 to 115,000; (2) each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block having an average molecular weight of about 20,000 to 450,000; (3) the blocks A constituting 5-95 weight percent of the copolymer; (4) the unsaturation of the block B is less than 10% of the original unsaturation; (5) the unsaturation of the A blocks is above 50% of the original unsaturation; (6) and substantially all of the acid compounds or their derivatives are grafted to the block copolymer at secondary or tertiary carbon positions in the B blocks; (7) and wherein said acid compounds and their derivatives are not easily polymerizable.
Claim 3
Dependent Claim
144 words
A functionalized selectively hydrogenated block copolymer having at least 1 A mid block and at least two B end blocks to which has been grafted an acid compound or its derivative wherein, (1) each A is predominantly a polymerized monoalkenyl aromatic hydrocarbon block having an average molecular weight of about 2,000 to 115,000; (2) each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block having an average molecular weight of about 20,000 to 450,000; (3) the blocks A constituting 5-95 weight percent of the copolymer; (4) the unsaturation of the block B is less than 10% of the original unsaturation; (5) the unsaturation of the A blocks is above 50% of the original unsaturation; (6) and substantially all of the acid compounds or their derivatives are grafted to the block copolymer at secondary or tertiary carbon positions in the B blocks.
Claim 4
Dependent Claim
144 words
A functionalized selectively hydrogenated block copolymer having at least 1 A mid block and at least two B end blocks to which has been grafted an acid compound or its derivative wherein, (1) each A is predominantly a polymerized monoalkenyl aromatic hydrocarbon block having an average molecular weight of about 2,000 to 115,000; (2) each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block having an average molecular weight of about 20,000 to 450,000; (3) the blocks A constituting 5-95 weight percent of the copolymer; (4) the unsaturation of the block B is less than 10% of the original unsaturation; (5) the unsaturation of the A blocks is above 50% of the original unsaturation; (6) and substantially all of the acid compounds or their derivatives are grafted to the block copolymer at secondary or tertiary carbon positions in the B blocks.
Claim 5
Dependent Claim
16 words
The functionalized block copolymer of claim 1 wherein the block copolymer is a styrene-butadiene-styrene block copolymer.
Claim 6
Dependent Claim
22 words
The block copolymer of claim 1 wherein prior to hydrogenation, the polymeric blocks A are polymer blocks of a monoalkenyl aromatic hydrocarbon.
Claim 7
Dependent Claim
52 words
The block copolymer of claim 1 wherein the blocks A comprise 5-30 percent by weight of the copolymer, the unsaturation of block B is reduced to less than 5% of its original value and the average unsaturation of the hydrogenated block copolymer is reduced to less than 20% of its original value.
Claim 8
Dependent Claim
24 words
The block copolymer of claim 5 wherein A is a polymerized styrene block having an average molecular weight of between about 4,000 and 60,000.
Claim 9
Dependent Claim
32 words
The block copolymer of claim 6 wherein B is a polymerized butadiene block having an average molecular weight of between about 35,000 and 150,000, 35%-50% of the condensed butadiene units having 1,2-configuration.
Claim 10
Dependent Claim
25 words
The block copolymer of claim 7 wherein the unsaturation of block B has been reduced by hydrogenation to less than 10% of its original value.
Claim 11
Dependent Claim
27 words
A functionalized selectively hydrogenated block copolymer composition according to claim 1 wherein an average of less than about 10% of the monoalkenyl aromatic hydrocarbon units are hydrogenated.
Claim 12
Dependent Claim
26 words
A functionalized hydrogenated block copolymer composition according to claim 1 wherein an average of more than about 25% of the monoalkenyl aromatic hydrocarbon units are hydrogenated.
Claim 13
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 1 wherein the acid compound is maleic acid.
Claim 14
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 1 wherein the acid compound is carboxylic acid.
Claim 15
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 1 wherein the acid compound is sulfonic acid.
Claim 16
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 1 wherein the grafted acid compound or its derivative is present at between about 0.02-20 weight percent.
Claim 17
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 1 wherein the grafted acid compound or its derivative is present at between about 0.1-10 weight percent.
Claim 18
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 1 wherein the grafted acid compound or its derivative is present at between about 0.2-5 weight percent.
Claim 19
Dependent Claim
16 words
The functionalized block copolymer of claim 1 wherein the block copolymer is a styrene-butadiene-styrene block copolymer.
Claim 20
Dependent Claim
22 words
The block copolymer of claim 1 wherein prior to hydrogenation, the polymeric blocks A are polymer blocks of a monoalkenyl aromatic hydrocarbon.
Claim 21
Dependent Claim
52 words
The block copolymer of claim 1 wherein the blocks A comprise 5-30 percent by weight of the copolymer, the unsaturation of block B is reduced to less than 5% of its original value and the average unsaturation of the hydrogenated block copolymer is reduced to less than 20% of its original value.
Claim 22
Dependent Claim
24 words
The block copolymer of claim 18 wherein A is a polymerized styrene block having an average molecular weight of between about 4,000 and 60,000.
Claim 23
Dependent Claim
32 words
The block copolymer of claim 19 wherein B is a polymerized butadiene block having an average molecular weight of between about 35,000 and 150,000, 35%-50% of the condensed butadiene units having 1,2-configuration.
Claim 24
Dependent Claim
25 words
The block copolymer of claim 20 wherein the unsaturation of block B has been reduced by hydrogenation to less than 10% of its original value.
Claim 25
Dependent Claim
27 words
A functionalized selectively hydrogenated block copolymer composition according to claim 2 wherein an average of less than about 10% of the monoalkenyl aromatic hydrocarbon units are hydrogenated.
Claim 26
Dependent Claim
26 words
A functionalized hydrogenated block copolymer composition according to claim 2 wherein an average of more than about 25% of the monoalkenyl aromatic hydrocarbon units are hydrogenated.
Claim 27
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 2 wherein the acid compound is maleic acid.
Claim 28
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 2 wherein the acid compound is carboxylic acid.
Claim 29
Dependent Claim
15 words
The functionalized hydrogenated block copolymer of claim 2 wherein the acid compound is sulfonic acid.
Claim 30
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 2 wherein the grafted acid compound or its derivative is present at between about 0.02-20 weight percent.
Claim 31
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 2 wherein the grafted acid compound or its derivative is present at between about 0.1-10 weight percent.
Claim 32
Dependent Claim
24 words
The functionalized hydrogenated block copolymer of claim 2 wherein the grafted acid compound or its derivative is present at between about 0.2-5 weight percent.
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |