US4337111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining strong and durable adhesion to rubber through chemical covalent bonds
Assignee: United States Department of the Navy
•
Filing: 1978-10-02
•
Granted: 1982-06-29
•
Expires: 1998-10-02
Abstract
Abstract Unvulcanized or partially vulcanized rubber is coated with a coating polymer capable of co-vulcanizing with the rubber and having functional groups capable of reacting with an adhesive. The coated rubber is then subjected to vulcanizing conditions. When the treated rubber surface is bonded to an adhesive, the functional groups react with the adhesive forming strong bonds.
Inventors
- 👤 Karl C. Kauffman
- 👤 Martin H. Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:52
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; B32; B32B; B32B25/00; B32B25/04; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2848; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31536; Y10T428/31855; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A method for introducing covalent bonds between vulcanized rubber and an adhesive comprising the steps of: coating a surface of unvulcanized or partially vulcanized rubber with a coating polymer capable of co-vulcanizing with the rubber and having functional groups capable of reacting with said adhesive; co-vulcanizing the rubber and coating polymer and applying said adhesive to the coated surface whereby said adhesive reacts with said functional groups.
Claim 2
Independent Claim
67 words
A method for introducing covalent bonds between vulcanized rubber and an adhesive comprising the steps of: coating a surface of unvulcanized or partially vulcanized rubber with a coating polymer capable of co-vulcanizing with the rubber and having functional groups capable of reacting with said adhesive; co-vulcanizing the rubber and coating polymer and applying said adhesive to the coated surface whereby said adhesive reacts with said functional groups.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein said rubber is an unsaturated rubber.
Claim 4
Dependent Claim
28 words
A method according to claim 2 wherein said rubber is selected from the group consisting of syrene-butadiene rubber, nitrile rubber, polybutadiene, butadiene copolymers, polyisoprene isoprene copolymers, and chloroprene.
Claim 5
Dependent Claim
15 words
A method according to claim 3 wherein said coating material is liquid amine-terminated butadiene-nitrile rubber.
Claim 6
Dependent Claim
32 words
A method according to claim 4 wherein said co-vulcanization is carried out by heating the coated rubber for from 1/2 to 16 hours at a temperature of between 220° and 360° F.
Claim 7
Dependent Claim
13 words
A method according to claim 5 wherein said adhesive is an epoxy adhesive.
Claim 8
Dependent Claim
13 words
A method according to claim 6 wherein said rubber is styrene butadiene rubber.
Claim 9
Dependent Claim
12 words
A method according to claim 6 wherein said rubber is nitrile rubber.
References Cited (Backward Citations)
US2467322A
Cited
US3068117A
Cited
US3326742A
Cited
US3528473A
Cited
US3406087A
Cited
US3655818A
Cited
US3895166A
Cited
US3962011A
Cited
US3939294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |