Patent US3660202A successfully refreshed from Google Patents.
US3660202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding of shaped articles of polyester
Assignee: Imperial Chemical Industries Ltd
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Filing: 1969-04-25
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Granted: 1972-05-02
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Expires: 1989-04-25
Abstract
Abstract An improved process is described for bonding polyester shaped articles to rubber. The improvement comprises treating the polyester surface with an aqueous solution of a bis(dihydroxyphenyl methyl)phenol which results in an increased bond strength using conventional aqueous rubber latex and resorcinol formaldehyde condensate dips to bond the polyester to the rubber. The surface treatment may be effected in a separate prior process followed by a conventional bonding process using a rubber latex and a resorcinol formaldehyde condensate, or it may be effected in a single bath process together with a rubber latex and a resorcinol formaldehyde condensate.
Inventors
- 👤 Robert Alexander Edington
- 👤 Derek Harry Aldred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C07; C07C; C07C37/00; C07C37/11; C07C37/16; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10S525/00; Y10S525/935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
43 words
A process according to claim 1 in which said fusible substance is fused in intimate contact with the surface of the polyester article, and subsequently a resorcinol formaldehyde resin and a rubber latex are applied to the so treated surface and heated thereon.
Claim 2
Dependent Claim
13 words
A process according to claim 2 in which said substituted resorcinols are resorcinol.
Claim 3
Dependent Claim
15 words
A process according to claim 3 in which said substituted monohydroxy benzene is 4-chloro phenol.
Claim 4
Dependent Claim
29 words
A process according to claim 1 in which the fusible substance, the resorcinol formaldehyde resin and the rubber latex are applied together to the polyester surface and heated thereon.
Claim 5
Dependent Claim
13 words
A process according to claim 5 in which said substituted resorcinols are resorcinol.
Claim 6
Dependent Claim
15 words
A process according to claim 6 in which said substituted monohydroxy benzene is 4-chloro phenol.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |