US4797447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact resistant blends of thermoplastic polyesters and modified block copolymers
Assignee: Kraton Polymers US LLC
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Filing: 1985-08-16
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Granted: 1989-01-10
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Expires: 2005-08-16
Abstract
Abstract The present invention relates to an impact resistant polymeric composition comprising a polyester and a thermally stable modified selectively hydrogenated high 1,2 content block copolymer wherein at least one graftable functional molecule is grafted to the block copolymer in the vinylarene block.
Inventors
- 👤 William P. Gergen
- 👤 Robert G. Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:40
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04; C08L; C08L53/00; C08L53/02; C08L53/025
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
124 words
Impact resistant polymeric composition comprising: (a) from 50 to 97 percent by weight of a thermoplastic polyester; and (b) from 3 to 50 percent by weight of a functionalized selectively hydrogenated block copolymer of the formula B n (AB) o A p where n=0 or 1, o≧1, p=0 or 1, each A is predominantly a polymerized vinyl aromatic hydrocarbon block and, each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block, to which has been grafted at least one graftable functional molecule selected from the group consisting of an electrophilic graftable molecule containing a functional group and an electrophile, wherein substantially all of said electrophilic graftable molecules or electrophiles are grafted to the block copolymer in the vinyl aromatic hydrocarbon block.
Claim 2
Dependent Claim
124 words
Impact resistant polymeric composition comprising: (a) from 50 to 97 percent by weight of a thermoplastic polyester; and (b) from 3 to 50 percent by weight of a functionalized selectively hydrogenated block copolymer of the formula B n (AB) o A p where n=0 or 1, o≧1, p=0 or 1, each A is predominantly a polymerized vinyl aromatic hydrocarbon block and, each B prior to hydrogenation is predominantly a polymerized conjugated diene hydrocarbon block, to which has been grafted at least one graftable functional molecule selected from the group consisting of an electrophilic graftable molecule containing a functional group and an electrophile, wherein substantially all of said electrophilic graftable molecules or electrophiles are grafted to the block copolymer in the vinyl aromatic hydrocarbon block.
Claim 3
Dependent Claim
96 words
The composition of claim 1 containing said block copolymer wherein: (1) each A is predominantly a polymerized vinyl aromatic hydrocarbon block having an average molecular weight of about 500 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 1-95 weight percent of the copolymer; (4) the unsaturation of the block B is less than 10% of the original unsaturation; and (5) the unsaturation of the A blocks is above 50% of the original unsaturation.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the block copolymer is a styrene-ethylene/butylene-styrene block copolymer.
Claim 5
Dependent Claim
51 words
The composition of claim 1 wherein the blocks A comprise 1-40 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 6
Dependent Claim
23 words
The composition of claim 4 wherein A is a polymerized styrene block having an average molecular weight of between about 500 and 60,000
Claim 7
Dependent Claim
31 words
The composition of claim 1 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 8
Dependent Claim
24 words
The composition of claim 6 wherein the unsaturation of block B has been reduced by hydrogenation to less than 10% of its original value.
Claim 9
Dependent Claim
21 words
The composition of claim 1 wherein an average of less than about 10% of the vinyl aromatic hydrocarbon units are hydrogenated.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein an average of more than about 25% of the vinyl aromatic hydrocarbon units are hydrogenated.
Claim 11
Dependent Claim
19 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is carbon dioxide.
Claim 12
Dependent Claim
19 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is ethylene oxide.
Claim 13
Dependent Claim
30 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is selected from the group consisting of aldehydes, ketones and acid salts and esters.
Claim 14
Dependent Claim
19 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is an epoxide.
Claim 15
Dependent Claim
18 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is sulphur.
Claim 16
Dependent Claim
20 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is a boron alkoxide.
Claim 17
Dependent Claim
19 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is an isocyanate.
Claim 18
Dependent Claim
21 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is a molecule containing silicon.
Claim 19
Dependent Claim
19 words
The composition of claim 1 wherein said graftable functional molecule is an electrophile and said electrophile is a sulfonate.
Claim 20
Dependent Claim
16 words
The composition of claim 1 wherein the functional groups are carboxylic acids, their salts and esters.
Claim 21
Dependent Claim
11 words
The composition of claim 1 wherein the functional groups are ketones.
Claim 22
Dependent Claim
13 words
The composition of claim 1 wherein the functional groups are alcohols and alkoxides.
Claim 23
Dependent Claim
11 words
The composition of claim 1 wherein the functional groups are amines.
Claim 24
Dependent Claim
16 words
The composition of claim 1 wherein the functional groups are functional groups containing a silicon atom.
Claim 25
Dependent Claim
11 words
The composition of claim 1 wherein the functional groups are thiols.
Claim 26
Dependent Claim
11 words
The composition of claim 1 wherein the functional groups are borates.
Claim 27
Dependent Claim
11 words
The composition of claim 1 wherein the functional groups are amides.
Claim 28
Dependent Claim
25 words
The composition of claim 1 wherein the grafted molecule or its derivative is present in the functionalized block copolymer at between about 0.02-20 weight percent.
Claim 29
Dependent Claim
25 words
The composition of claim 1 wherein the grafted molecule or its derivative is present in the functionalized block copolymer at between about 0.1-10 weight percent.
Claim 30
Dependent Claim
25 words
The composition of claim 1 wherein the grafted molecule or its derivative is present in the functionalized block copolymer at between about 0.2-5 weight percent.
Claim 31
Dependent Claim
20 words
The composition of claim 1 wherein the polyester is present at between about 70 and about 95 percent by weight.
Claim 32
Dependent Claim
20 words
The composition of claim 1 wherein the polyester is present at between about 75 and about 90 percent by weight.
Claim 33
Dependent Claim
11 words
The composition of claim 1 wherein the polyester is polybutylene terephthalate.
Claim 34
Dependent Claim
11 words
The composition of claim 1 wherein the polyester is polyethylene terephthalate.
Claim 35
Dependent Claim
32 words
The composition of claim 1 wherein the polyester is present at between 60 and 90 percent by weight and the block copolymer is present at between 10 and 40 percent by weight.
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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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |