US5017660A
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US
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Selectively, partially hydrogenated polymer and rubber composition and impact resistant styrenic resin containing the same
Assignee: Asahi Kasei Corp
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Filing: 1988-08-03
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Granted: 1991-05-21
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Expires: 2008-08-03
Abstract
Abstract A selectively, partially hydrogenated butadiene polymer produced by selectively, partially hydrogenating a butadiene polymer comprising: (1) a bound styrene content [S] of 0 to 40% by weight; (2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion; (3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and (4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0; wherein the selectively, partially hydrogenated butadiene polymer produced is characterized by (5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and (6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion; and wherein the [A], [B], [S] and [V] satisfy the relationships of: (7) [A]/([S]+[V]) 1/2 which is 2 to 8; and (8) [B].[V] 1/2 /[A] which is 10 to 16.
Inventors
- 👤 Yasuo Hattori
- 👤 Yuichi Kitagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:39
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F279/00; C08F279/02; C08C; C08C19/00; C08C19/02; C08L; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
134 words
A selectively partially hydrogenated butadiene polymer produced by selectively, partially hydrogenating a butadiene polymer comprising: (1) a bound styrene content [S] of 0 to 40% by weight; (2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion; (3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and (4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0; wherein the selectively, partially hydrogenated butadiene polymer produced is characterized (5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and (6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion; said [A], [B], [S] and [V] satisfying the relationships of: (7) [A]/([S]+[V]) 1/2 which is 2 to 8; and (8) [B].[V] 1/2 /[A] which is 10 to 16.
Claim 2
Dependent Claim
134 words
A selectively partially hydrogenated butadiene polymer produced by selectively, partially hydrogenating a butadiene polymer comprising: (1) a bound styrene content [S] of 0 to 40% by weight; (2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion; (3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and (4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0; wherein the selectively, partially hydrogenated butadiene polymer produced is characterized (5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and (6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion; said [A], [B], [S] and [V] satisfying the relationships of: (7) [A]/([S]+[V]) 1/2 which is 2 to 8; and (8) [B].[V] 1/2 /[A] which is 10 to 16.
Claim 3
Dependent Claim
30 words
The selectively partially hydrogenated butdiene polymer as claimed in claim 1, wherein the hydrogenated ratio [A] is 3 to 60% and the hydrogenation ratio [B] is of 30% or more.
Claim 4
Dependent Claim
69 words
The selectively, partially hydrogenated butadiene polymer as claimed in claim 1, wherein the butadiene polymer being partially hydrogenated comprises: (1) a bound styrene content [S] of 0 to 30% by weight; (2) a vinyl linkage content [V] of 5 to 60% by weight at the butadiene portion; (3) a weight average molecular weight (Mw) of 50,000 to 800,000; and (4) a molecular weight distribution (Mw/Mn) of 1.5 to 3.0.
Claim 5
Dependent Claim
21 words
The selectively, partially hydrogenated butadiene polymer as claimed in claim 1, wherein the butadiene polymer being hydrogenated is a butadiene homopolymer.
Claim 6
Dependent Claim
37 words
The selectively, partially hydrogenated butadiene polymer as claimed in claim 1, wherein the butadiene polymer being hydrogenated is a styrenebutadiene copolymer having a styrene content of 30% by weight or less, said styrene being bound at random.
Claim 7
Dependent Claim
53 words
A rubber composition suitable for use in tire manufacture comprising 100 parts by weight of a starting material rubber containing at least 30% by weight of the selectively partially hydrogenated butadiene polymer of claim 1, 10 to 150 parts by weight of carbon black, and 0.1 to 10 parts of a vulcanizing agent.
Claim 8
Dependent Claim
39 words
The rubber composition as claimed in claim 6, wherein the hydrogenation ratio [A] of the selectively, partially hydrogenated butadiene polymer is 3 to 60% and hydrogenation ratio [B] of the selectively, partially hydrogenated butadiene polymer is 30% or more.
Claim 9
Dependent Claim
64 words
The rubber composition as claimed in claim 6, wherein the butadiene polymer being partially hydrogenated comprises: (1) a bound styrene content [S] of 0 to 30% by weight; (2) a vinyl linkage content [V] of 5 to 60% at the butadiene portion; (3) a weight average molecular weight (Mw) of 50,000 to 800,000; and (4) a molecular weight distribution (Mw/Mn) of 1.5 to 3.0.
Claim 10
Dependent Claim
125 words
An impact resistant styrenic resin comprising a toughening agent, which comprises 2% to 25% by weight of the selectively, partially hydrogenated butadiene polymer of claim 1 wherein the butadiene polymer being partially hydrogenated comprises: (1) a bound styrene content [S] of 0 to 30% by weight; (2) a vinyl linkage content [V] of 5 to 60% at the butadiene portion; (3) a weight average molecular weight (Mw) of 50,000 to 800,000; (4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0, wherein the selectively, partially hydrogenated butadiene polymer produced is characterized by (5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and (6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion.
Claim 11
Dependent Claim
36 words
The impact resistant styrenic resin as claimed in claim 9, wherein after the selective, partial hydrogenation, the 1,2-vinyl linkage content of [V] is 0.5 to 12% and the 1,4-linkage content of [V] is at least 10%.
Claim 12
Dependent Claim
66 words
The impact resistant styrenic resin as claimed in claim 9, wherein the butadiene polymer being partially hydrogenated comprises: (1) a bound styrene content [S] of 0 to 30% by weight; (2) a vinyl linkage content [V] of 5 to 60% at the butadiene portion; (3) a weight average molecular weight (Mw) of 50,000 to 800,000; and (4) a molecular weight distribution (Mw/Mn) of 1.5 to 3.0.
Claim 13
Dependent Claim
28 words
The impact resistant styrenic resin as claimed in claim 9, wherein the hydrogenation ratio [A] is 3 to 60%; and the hydrogenation ratio [B] is 30% or more.
Claim 14
Dependent Claim
19 words
The impact resistant styrenic resin as claimed in claim 9, wherein the butadiene being hydrogenated is a butadiene homopolymer.
Claim 15
Dependent Claim
30 words
The impact resistant styrenic resin as claimed in claim 9, wherein the butadiene polymer being hydrogenated is a styrene-butadiene copolymer having a styrene content of 30% by weight or less.
Claim 16
Dependent Claim
182 words
A method for producing an impact resistant styrenic resin, which comprises radically polymerizing, by mass polymerization, suspension polymerization or solution polymerization, 2 to 25 parts by weight of a selectively partially hydrogenated butadiene polymer of claim 1, wherein after the selective, partial hydrogenation the 1,2-vinyl linkage content of [V] is 0.5 to 12%, and the 1,4-linkage content of [V] is at least 10% with 98 to 75 parts by weight of a styrene monomer or a mixture of a styrene monomer and a monomer copolymerizable with the styrene monomer, wherein said selectively, partially hydrogenated butadiene polymer comprises: (1) a bound styrene content [S] of 0 to 40% by weight; (2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion; (3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and (4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0; said butadiene polymer having: (5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and (6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
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