Patent US4038220A successfully refreshed from Google Patents.
US4038220A
Expired / Lapsed
US
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Method for adhesion of rubber [using N-(substituted oxymethyl)melamines and beta naphthol] to reinforcing materials
Assignee: Wyeth Holdings LLC
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Filing: 1975-12-08
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Granted: 1977-07-26
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Expires: 1995-12-08
Abstract
Abstract A vulcanizable rubber composition is provided which comprises rubber, a filler material, an N-(substituted oxymethyl)melamine and at least one of alpha or beta naphthol.
Inventors
- 👤 Harold Godfred Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:29
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34922; C08L; C08L21/00; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31707; Y10T428/31826
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A vulcanizable rubber composition comprising rubber, a vulcanizing agent, from about 1 to 10 parts per 100 parts of the rubber of an N-(substituted oxymethyl)melamine having the following general formula ##STR2## wherein X is hydrogen or lower alkyl having 1 to 8 carbon atoms; R, R 1 , R 2 , R 3 and R 4 are individually hydrogen, lower alkyl having from 1 to 8 carbon atoms or the group --CH 2 OX, wherein X is as defined above, and from about 0.5 to 8 parts per 100 parts of rubber of at least one of alpha or beta naphthol, said rubber composition when vulcanized, having good adhesion to textile fiber or metal reinforcing cords embedded therein.
Claim 2
Dependent Claim
118 words
A vulcanizable rubber composition comprising rubber, a vulcanizing agent, from about 1 to 10 parts per 100 parts of the rubber of an N-(substituted oxymethyl)melamine having the following general formula ##STR2## wherein X is hydrogen or lower alkyl having 1 to 8 carbon atoms; R, R 1 , R 2 , R 3 and R 4 are individually hydrogen, lower alkyl having from 1 to 8 carbon atoms or the group --CH 2 OX, wherein X is as defined above, and from about 0.5 to 8 parts per 100 parts of rubber of at least one of alpha or beta naphthol, said rubber composition when vulcanized, having good adhesion to textile fiber or metal reinforcing cords embedded therein.
Claim 3
Dependent Claim
11 words
The composition according to claim 1 wherein the melamine is hexakis(methoxymethyl)melamine.
Claim 4
Dependent Claim
25 words
The composition according to claim 1 wherein the concentration of N-(substituted oxymethyl)melamine is from about 2 to 4 parts per hundred parts of the rubber.
Claim 5
Dependent Claim
27 words
The composition according to claim 1 wherein the concentration of alpha or beta naphthol is from about 1 to 3 parts per hundred parts of the rubber.
Claim 6
Dependent Claim
33 words
The composition according to claim 1 wherein the rubber is selected from the group consisting of natural rubber, polybutadiene, polyisoprene, polychloroprene, butadiene/styrene copolymer rubbers, butadiene/acrylonitrile copolymer rubbers, ethylene-propylene terpolymer rubbers and blends thereof.
Claim 7
Dependent Claim
22 words
A vulcanized rubber article reinforced with a textile fiber or wire cord and prepared from the vulcanizable rubber composition of claim 1.
Claim 8
Dependent Claim
26 words
The composition according to claim 1 containing, in addition thereto, 2 to 14 parts of high surface area activated silica per hundred parts of the rubber.
Claim 9
Dependent Claim
12 words
The composition according to claim 1, containing, in addition thereto, carbon black.
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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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |