Patent US3966530A successfully refreshed from Google Patents.
US3966530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of polymers
Assignee: Malaysian Rubber Producers Research Association
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Filing: 1974-10-29
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Granted: 1976-06-29
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Expires: 1994-10-29
Abstract
Abstract A method of surface treating elastomer surfaces comprises applying thereto a 4-substituted-1,2,4-triazoline-3,5-dione preferably in solution. The treatment improves adhesion using normal elastomer adhesives, improves resistance to peeling with flexible paints and reduces the surface tack of the elastomer. The method is advantageous over prior art chlorination and halogen donor techniques particularly in that the triazoline diones are relatively non-corrosive and non-toxic.
Inventors
- 👤 Ernest Cutts
- 👤 Geoffrey Thomas Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08C; C08C19/00; C08C19/22; C09; C09J; C09J5/00; C09J5/02; C08J2321/00; C09J2421/00; C09J2421/008; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31699; Y10T428/31707; Y10T428/31826; Y10T428/3183; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
A method of treating a surface of a non-polar unsaturated elastomer to improve the adhesion characteristics thereof which method comprises applying to the surface of the elastomer a 4-substituted-1,2,4-triazoline-3,5-dione.
Claim 2
Independent Claim
29 words
A method of treating a surface of a non-polar unsaturated elastomer to improve the adhesion characteristics thereof which method comprises applying to the surface of the elastomer a 4-substituted-1,2,4-triazoline-3,5-dione.
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1 wherein the 4-substituted-1,2,4-triazoline-3,5-dione has the formula: ##SPC3## where R is an alkyl or aryl group and R' is an alkylene or arylene group.
Claim 4
Dependent Claim
38 words
A method as claimed in claim 2 wherein R is an alkyl group having from 1 to 6 carbon atoms, a phenyl group or a naphthyl group and R' is a phenylene group or bis phenylene methane group.
Claim 5
Dependent Claim
22 words
A method as claimed in claim 1 wherein the 4-substituted-1,2,4-triazoline-3,5-dione is applied to the elastomer surface in the form of a solution.
Claim 6
Dependent Claim
22 words
A method as claimed in claim 4 wherein the 4-substituted-1,2,4-triazoline-3,5-dione is applied to the elastomer surdace by dipping, scrubbing, painting or spraying.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 1 wherein the amount of 4-substituted-1,2,4-triazoline-3,5-dione applied to the elastomer surface is in the range of from 0.1 to 20 g.m. - 2 .
Claim 8
Dependent Claim
21 words
A method as claimed in claim 1 wherein the unsaturated elastomer is natural rubber, styrene-butadiene rubber, butadiene rubber, or blends thereof.
Claim 9
Dependent Claim
14 words
A method as claimed in claim 1 wherein the elastomer is a vulcanized elastomer.
Claim 10
Dependent Claim
14 words
A method as claimed in claim 1 wherein the elastomer is an unvulcanized elastomer.
Claim 11
Independent Claim
51 words
A method of adhering a surface of a non-polar unsaturated elastomer to a substrate comprising treating the surface of the elastomer by applying thereto a 4-substituted-1,2,4-triazoline-3,5-dione, applying an adhesive to the treated elastomer surface, the substrate or both treated elastomer surface and substrate and adhering the elastomer surface and substrate together.
Claim 12
Independent Claim
51 words
A method of adhering a surface of a non-polar unsaturated elastomer to a substrate comprising treating the surface of the elastomer by applying thereto a 4-substituted-1,2,4-triazoline-3,5-dione, applying an adhesive to the treated elastomer surface, the substrate or both treated elastomer surface and substrate and adhering the elastomer surface and substrate together.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |