US4228045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adhesion of rubber to reinforcing materials
Assignee: Wyeth Holdings LLC
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Filing: 1979-01-31
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Granted: 1980-10-14
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Expires: 1999-01-31
Abstract
Abstract A vulcanizable rubber composition comprising a rubber, a vulcanizing agent and glyoxal or a glyoxal reaction product and a method of adhering fiber or steel tire cord, are disclosed.
Inventors
- 👤 Rao S. Bezwada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:34
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/40; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/07; C08K5/15; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08J2321/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
83 words
A vulcanizable rubber composition consisting essentially of (A) natural or synthetic rubber, or a mixture thereof; (B) a vulcanizing agent; and (C) from about 1 to 10 parts by weight, per hundred parts by weight of rubber, of (a) glyoxal, (b) a reaction product of glyoxal and from 0.1 to 10 molar proportions of urea or (c) a reaction product of glyoxal, 0.1 to 10 molar proportions of urea and from 0.01 to 2 molar proportions of formaldehyde per molar proportion of glyoxal.
Claim 2
Dependent Claim
83 words
A vulcanizable rubber composition consisting essentially of (A) natural or synthetic rubber, or a mixture thereof; (B) a vulcanizing agent; and (C) from about 1 to 10 parts by weight, per hundred parts by weight of rubber, of (a) glyoxal, (b) a reaction product of glyoxal and from 0.1 to 10 molar proportions of urea or (c) a reaction product of glyoxal, 0.1 to 10 molar proportions of urea and from 0.01 to 2 molar proportions of formaldehyde per molar proportion of glyoxal.
Claim 3
Dependent Claim
30 words
A composition according to claim 1 wherein said rubber is natural rubber, polybutadiene, polyisoprene, ethylenepropylene terpolymer rubber, butadiene-styrene copolymer rubber, butadieneacrylonitrile copolymer rubber, chloroprene rubber, chlorosulfonated polyethylene, or mixtures thereof.
Claim 4
Dependent Claim
12 words
A composition according to claim 2 wherein said rubber is natural rubber.
Claim 5
Dependent Claim
19 words
A composition according to claim 1 wherein said glyoxal compound contains from 0.01 to 0.4 molar proportions of formaldehyde.
Claim 6
Dependent Claim
29 words
A composition according to claim 1 containing from 0.1 to 10 molar proportions of urea and from 0.01 to 0.4 molar proportions of formaldehyde per mole proportion of glyoxal.
Claim 7
Dependent Claim
29 words
A composition according to claim 1 containing from 0.5 to 4 molar proportions of urea and from 0.01 to 0.4 molar proportions of formaldehyde per molar proportion of glyoxal.
Claim 8
Dependent Claim
30 words
A composition according to claim 1 containing from about 1 to 1.5 molar proportions of urea and from 0.1 to 2 molar proportions of formaldehyde per mole proportion of glyoxal.
Claim 9
Dependent Claim
13 words
A composition according to claim 1 wherein said (c) is formaldehyde-free, aqueous glyoxal.
Claim 10
Dependent Claim
22 words
A composition according to claim 1 wherein said (c) is the reaction product of formaldehyde-free, aqueous glyoxal, and 0.1-10.0 moles of urea.
Claim 11
Dependent Claim
24 words
A composition according to claim 9 wherein the molar ratio of said glyoxal and said urea ranges from about 1:1 to about 1:1.5, respectively.
Claim 12
Dependent Claim
8 words
A composition according to claim 7, containing 4,5-dihydroxy-2-imidazolidinone.
Claim 13
Dependent Claim
8 words
A composition according to claim 7 containing 1-methylol-4,5-dihydroxy-2-imidazolidinone.
Claim 14
Dependent Claim
8 words
A composition according to claim 7 containing 1,3-dimethylol-4,5-dihydroxy-2-imidazolidinone.
Claim 15
Dependent Claim
16 words
A composition according to claim 1 wherein said (c) is absorbed on an inert solid carrier.
Claim 16
Dependent Claim
13 words
A composition according to claim 14 wherein said carrier is hydrous calcium silicate.
Claim 17
Dependent Claim
33 words
A composition according to claim 1 wherein said composition additionally comprises (D) from about 2 to 14 parts by weight, per hundred parts by weight of rubber, of a high surface area silica.
Claim 18
Dependent Claim
18 words
A composition according to claim 16 wherein said silica comprises 8 to 12 parts per hundred or rubber.
Claim 19
Dependent Claim
15 words
A composition according to claim 1 wherein said rubber composition additionally comprises (E) carbon black.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |