US4647631A
Expired / Lapsed
US
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Modified liquid resole phenolic resinous composition for friction materials
Assignee: Sumitomo Durez Co Ltd
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Filing: 1986-01-13
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Granted: 1987-03-03
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Expires: 2006-01-13
Abstract
Abstract A resinous composition for friction materials, especially for non-asbestos type friction materials is disclosed. The composition is composed of a phenolic resin modified by the reaction product of an acrylonitrile-butadiene liquid rubber with an epoxy resin, and further modification with a triazine resin. This composition when blended with non-asbestos fibers, such as fiberglass, etc., retains the flexibility desired, provides excellent friction characteristics and a reduced wear rate.
Inventors
- 👤 Kenichi Noguchi
- 👤 Kazuhisa Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:48
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/20; C08L61/26; C08L63/00; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
45 words
A resinous composition for friction materials comprising a liquid resole phenolic resin modified with a reaction product of an acrylonitrile-butadiene liquid rubber which contains carboxyl groups, and an epoxy resin which contains 1.5 to 2.5 epoxy groups per molecule, and with a triazine resin compound.
Claim 2
Dependent Claim
45 words
A resinous composition for friction materials comprising a liquid resole phenolic resin modified with a reaction product of an acrylonitrile-butadiene liquid rubber which contains carboxyl groups, and an epoxy resin which contains 1.5 to 2.5 epoxy groups per molecule, and with a triazine resin compound.
Claim 3
Dependent Claim
28 words
A resinous composition according to claim 1, wherein the acrylonitrile-butadiene liquid rubber contains about 5 to about 50% acrylonitrile, and contains 1.5 to 2.5 carboxyl groups per molecule.
Claim 4
Dependent Claim
29 words
A resinous composition according to claim 1, wherein the reaction product of the acrylonitrile-butadiene rubber-epoxy resin has epoxy group/carboxyl group ratio of 1 to 10, in the starting materials.
Claim 5
Dependent Claim
17 words
A resinous composition according to claim 3, wherein the epoxy group/carboxyl group ratio is 1.5 to 5.
Claim 6
Dependent Claim
35 words
A resinous composition according to claim 1, wherein the phenolic resin is modified with the acrylonitrile-butadiene-epoxy reaction product in the range of about 10 to 100 parts reaction product per 100 parts of phenolic resin.
Claim 7
Dependent Claim
29 words
A resinous composition according to claim 5, wherein the acrylonitrile-butadiene-epoxy reaction product is reacted in the range of 20 to 80 parts reaction product per 100 parts phenolic resin.
Claim 8
Dependent Claim
30 words
A resinous composition according to claim 1, wherein the phenolic resin modified with the acrylonitrile-butadiene-epoxy reaction product is reacted with a triazine resin in the ratio of 90:10 to 10:90.
Claim 9
Dependent Claim
19 words
A resinous composition according to claim 7, wherein the ratio of modified phenolic resin:triazine resin is 20:80 to 70:30.
Claim 10
Dependent Claim
63 words
A resinous composition for friction materials comprising a liquid resole phenolic resin modified with: (a) the reaction product of an acrylonitrile-butadiene liquid rubber and an epoxy resin, wherein the acrylonitrile-butadiene rubber contains 5 to 50% acrylonitrile, 1.5 to 2.5 carboxyl groups per molecule, said epoxy resin contains 1.5 to 2.5 epoxy groups per molecule and, (b) followed by modification with a triazine resin.
Claim 11
Dependent Claim
63 words
A resinous composition for friction materials comprising a liquid resole phenolic resin modified with: (a) the reaction product of an acrylonitrile-butadiene liquid rubber and an epoxy resin, wherein the acrylonitrile-butadiene rubber contains 5 to 50% acrylonitrile, 1.5 to 2.5 carboxyl groups per molecule, said epoxy resin contains 1.5 to 2.5 epoxy groups per molecule and, (b) followed by modification with a triazine resin.
Claim 12
Dependent Claim
23 words
A resinous composition according to claim 9, wherein the reaction product is prepared having a epoxy group/carboxyl group ratio of 1 to 10.
Claim 13
Dependent Claim
16 words
A resinous composition according to claim 10, wherein the epoxy group/carboxyl ratio is 1.5 to 5.
Claim 14
Dependent Claim
36 words
A resinous composition according to claim 9, wherein the phenolic resin is modified with the reaction product of the acrylonitrile-butadiene-epoxy reaction in the range of 10 to 100 parts reaction product per 100 parts phenolic resin.
Claim 15
Dependent Claim
26 words
A resinous composition according to claim 12, wherein the reaction product is employed in the range of 20 to 80 parts per 100 parts phenolic resin.
Claim 16
Dependent Claim
30 words
A resinous composition according to claim 9, wherein the phenolic resin modified with the acrylonitrile-butadiene-epoxy reaction product is modified with a triazine resin in the ratio of 90:10 to 10:90.
Claim 17
Dependent Claim
19 words
A resinous composition according to claim 14, wherein the ratio of modified phenolic resin:triazine resin is 20:80 to 70:30.
References Cited (Backward Citations)
CA572299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |