US4593070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact-resistant phenolic resin composition
Assignee: Zeon Corp
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Filing: 1985-03-01
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Granted: 1986-06-03
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Expires: 2005-03-01
Abstract
Abstract An impact-resistant phenolic resin composition comprising 99 to 25% by weight of a phenolic resin and 1 to 75% by weight of a nitrile group-containing highly saturated polymer rubber whose amount of bound nitrile ranges from 10 to 60% by weight and having an iodine value not exceeding 120.
Inventors
- 👤 Motofumi Oyama
- 👤 Yoichiro Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:35
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; C; C08; C08L; C08L15/00; C08L15/005; C08L33/00; C08L33/18; C08L61/00; C08L61/04; C08L61/06; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
An impact-resistant phenolic resin composition comprising 99 to 25% by weight of a thermosetting phenolic resin and 1 to 75% by weight of a nitrile group-containing highly saturated polymer rubber whose amount of bound nitrile ranges from 10 to 60% by weight and having an iodine value not exceeding 120.
Claim 2
Dependent Claim
50 words
An impact-resistant phenolic resin composition comprising 99 to 25% by weight of a thermosetting phenolic resin and 1 to 75% by weight of a nitrile group-containing highly saturated polymer rubber whose amount of bound nitrile ranges from 10 to 60% by weight and having an iodine value not exceeding 120.
Claim 3
Dependent Claim
34 words
The composition of claim 1 wherein the amount of bound nitrile of the nitrile group-containing highly saturated polymer rubber is from 20 to 50% by weight, and its iodine value does not exceed 80.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein said nitrile group-containing highly saturated polymer rubber is contained in an amount ranging from 5 to 60% by weight.
Claim 5
Dependent Claim
52 words
The composition of claim 1 wherein said nitrile group-containing highly saturated polymer rubber is at least one rubber selected from the group consisting of the hydrogenated unsaturated nitrile/conjugated diene copolymer rubber, unsaturated nitrile/conjugated diene/another ethylenically unsaturated monomer terpolymer rubber and a hydrogenation product thereof, and unsaturated nitrile/another ethylenically unsaturated monomer copolymer rubber.
Claim 6
Dependent Claim
11 words
A friction material using the composition of claim 1 as binder.
Claim 7
Dependent Claim
34 words
The composition of claim 1 wherein the thermosetting phenolic resin is derived from a phenolic resin obtained by reacting phenol, cresol, or chlorophenol with formaldehyde in the presence of an acid or alkali catalyst.
Claim 8
Dependent Claim
29 words
The composition of claim 6 wherein the phenolic resin is selected from the group consisting of unmodified phenolic resins, cashew-modified phenolic resins, epoxy-modified phenolic resins, and elastomer-modified phenolic resins.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |