Patent US840868A successfully refreshed from Google Patents.
Patent US4900772A successfully refreshed from Google Patents.
US4900772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable resin composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1988-04-11
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Granted: 1990-02-13
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Expires: 2008-04-11
Abstract
Abstract A curable resin composition comprising (A) 100 parts by weight of an elastomeric organic polymer of a saturated hydrocarbon having at least one silicon-containing group cross-linkable by the formation of a siloxane bond at the molecular ends, and (B) 0.01 to 10 parts by weight of a sulfur-containing antioxidant. The curable resin composition produces a cured product having excellent heat resistance.
Inventors
- 👤 Masayoshi Imanaka
- 👤 Koji Noda
- 👤 Katsuhiko Isayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:04
CPC Classifications
C; C08; C08L; C08L43/00; C08L43/04; C08C; C08C19/00; C08C19/25; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A curable resin composition comprising: (A) 100 parts by weight of an elastomeric organic polymer of a saturated hydrocarbon selected from the group consisting of an isobutylene polymer and a hydrogenated polybutadiene, said organic polymer having at least one silicon-containing group cross-linkable by the formation of a siloxane bond at the molecular ends, and (B) 0.01 to 10 parts by weight of a sulfur-containing antioxidant selected from the group consisting of a sulfide of carboxylic acid ester and a sulfide of hindered phenol.
Claim 2
Dependent Claim
83 words
A curable resin composition comprising: (A) 100 parts by weight of an elastomeric organic polymer of a saturated hydrocarbon selected from the group consisting of an isobutylene polymer and a hydrogenated polybutadiene, said organic polymer having at least one silicon-containing group cross-linkable by the formation of a siloxane bond at the molecular ends, and (B) 0.01 to 10 parts by weight of a sulfur-containing antioxidant selected from the group consisting of a sulfide of carboxylic acid ester and a sulfide of hindered phenol.
Claim 3
Dependent Claim
30 words
The composition of claim 1, wheren the amount of said component (B) is from 0.1 to 5 parts by weight based on 100 parts by weight of said component (A).
Claim 4
Dependent Claim
13 words
The composition of claim 1, wherein said cross-linkable group is an alkoxysilyl group.
Claim 5
Dependent Claim
19 words
The composition of claim 1, wherein said organic polymer is a polymer whose main chain is an isobutylene polymer.
Claim 6
Dependent Claim
17 words
The composition of claim 4, wherein said isobutylene polymer has a molecular weight of 500 to 30,000.
Claim 7
Dependent Claim
17 words
The composition of claim 4, wherein said isobutylene polymer has a molecular weight of 1,000 to 15,000.
Claim 8
Dependent Claim
19 words
The composition of claim 1, wherein said organic polymer is a polymer whose main chain is a hydrogenated polybutadiene.
Claim 9
Dependent Claim
17 words
The composition of claim 7, wherein said hydrogenated polybutadiene has a molecular weight of 500 to 30,000.
Claim 10
Dependent Claim
17 words
The composition of claim 7, wherein said hydrogenated polybutadiene has a molecular weight of 1,000 to 15,000.
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |