US4014827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrate reinforced rubber structure and compound for forming same
Assignee: SLOSS INDUSTRIES Corp A CORP OF
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Filing: 1975-03-10
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Granted: 1977-03-29
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Expires: 1995-03-10
Abstract
Abstract Reaction products of phenol and hexamethylenetetramine act as methylene donors in rubber compounds containing acceptors such as free resorcinol or precondensed resorcinol-formaldehyde (RF) resins. The products of reaction between this methylene donor and various methylene acceptors produce excellent adhesion between the rubber compounds and reinforcing substrates. Reinforcement of the rubber compound is obtained and this donor does not cause degradation of polyester cord used as a reinforcing substrate.
Inventors
- 👤 David R. Hart
- 👤 Wade K. Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08L; C08L21/00; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
In a substrate reinforced rubber structure wherein the substrate is selected from the group consisting of cotton, rayon, nylon, fiberglass, steel and polyester, the improvement which comprises compounding the rubber with a methylene acceptor selected from the group consisting of resorcinol and precondensed resorcinolformaldehyde resin and as a donor, the reaction product of phenol and hexamethylenetetramine.
Claim 2
Dependent Claim
56 words
In a substrate reinforced rubber structure wherein the substrate is selected from the group consisting of cotton, rayon, nylon, fiberglass, steel and polyester, the improvement which comprises compounding the rubber with a methylene acceptor selected from the group consisting of resorcinol and precondensed resorcinolformaldehyde resin and as a donor, the reaction product of phenol and hexamethylenetetramine.
Claim 3
Dependent Claim
25 words
The structure as defined in claim 1 in which the donor is the reaction product of 3 moles of phenol with 1 mole of hexamethylenetetramine.
Claim 4
Dependent Claim
25 words
The structure as defined in claim 1 in which the donor is the reaction product of 2 moles of phenol with one mole of hexamethylenetetramine.
Claim 5
Dependent Claim
25 words
The structure as defined in claim 1 in which the donor is the reaction product of 1 mole of phenol with one mole of hexamethylenetetramine.
Claim 6
Dependent Claim
20 words
The structure as defined in claim 1 in which the polyester substrate is polyester cord which is protected from degradation.
Claim 7
Dependent Claim
32 words
A rubber compound comprising rubber compounded with a methylene acceptor selected from the group consisting of resorcinol and precondensed resorcinol-formaldehyde resin and as a donor, the reaction product of phenol and hexamethylenetetramine.
Claim 8
Dependent Claim
32 words
A rubber compound comprising rubber compounded with a methylene acceptor selected from the group consisting of resorcinol and precondensed resorcinol-formaldehyde resin and as a donor, the reaction product of phenol and hexamethylenetetramine.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |