Patent US4581092A successfully refreshed from Google Patents.
US4581092A
Expired / Lapsed
US
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Preformed adhesive compositions
Assignee: Lord Corp
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Filing: 1984-06-05
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Granted: 1986-04-08
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Expires: 2004-06-05
Abstract
Abstract Preformed adhesive compositions comprising an elastomeric polymeric material having a residual olefinic unsaturation not greater than 5 mol percent, a polyisocyanate compound and a curing agent are particularly suitable for bonding vulcanized natural and synthetic rubbers. A method for cold-vulcanization bonding of vulcanized rubber goods is disclosed.
Inventors
- 👤 Stephen A. Westley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/14; C09J123/00; C09J123/26; C09J123/28; C09J123/283; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31587; Y10T428/31855; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
A method for bonding vulcanized rubber goods comprising placing between overlapped areas of said rubber goods a preformed adhesive composition comprising (A) 100 parts by weight of chlorinated butyl rubber having a residual olefinically-unsaturated content not greater than 5 mol percent; (B) from 0.5 to 60 parts by weight of at least one elevated temperature tackifying agent; (C) from 35 to 80 parts by weight of at least one low temperature tackifying agent; (D) from 0.1 to 25 parts by weight of at least one polyisocyanate; and (E) from 0.1 to 30 parts by weight of at least one curing agent selected from the group consisting of aromatic nitroso compounds and aryl dioxime compounds, said aryl dioxime compounds being use in combination with from 2 to 3 parts by weight of at least one oxidizing agent; applying pressure to said overlapped areas to provide an initial adhesive strength of at least one lb/in., and exposing said adhesivelyjoined areas to ambient conditions of heat and pressure for a time sufficient to vulcanize said adhesive.
Claim 2
Independent Claim
173 words
A method for bonding vulcanized rubber goods comprising placing between overlapped areas of said rubber goods a preformed adhesive composition comprising (A) 100 parts by weight of chlorinated butyl rubber having a residual olefinically-unsaturated content not greater than 5 mol percent; (B) from 0.5 to 60 parts by weight of at least one elevated temperature tackifying agent; (C) from 35 to 80 parts by weight of at least one low temperature tackifying agent; (D) from 0.1 to 25 parts by weight of at least one polyisocyanate; and (E) from 0.1 to 30 parts by weight of at least one curing agent selected from the group consisting of aromatic nitroso compounds and aryl dioxime compounds, said aryl dioxime compounds being use in combination with from 2 to 3 parts by weight of at least one oxidizing agent; applying pressure to said overlapped areas to provide an initial adhesive strength of at least one lb/in., and exposing said adhesivelyjoined areas to ambient conditions of heat and pressure for a time sufficient to vulcanize said adhesive.
Claim 3
Dependent Claim
120 words
A preformed adhesive composition comprising (A) 100 parts by weight of chlorinated butyl rubber having a residual olefinically-unsaturated content not greater than 5 mol percent; (B) from 0.5 to 60 parts by weight of at least one elevated temperature tackifying agent; (C) from 35 to 80 parts by weight of at least one low temperature tackifying agent; (D) from 0.1 to 25 parts by weight of at least one polyisocyanate; and (E) from 0.1 to 30 parts by weight of at least one curing agent selected from the group consisting of aromatic nitroso compounds and aryl dioxime compounds, said aryl dioxime compounds being used in combination with from 2 to 3 parts by weight of at least one oxidizing agent.
Claim 4
Dependent Claim
120 words
A preformed adhesive composition comprising (A) 100 parts by weight of chlorinated butyl rubber having a residual olefinically-unsaturated content not greater than 5 mol percent; (B) from 0.5 to 60 parts by weight of at least one elevated temperature tackifying agent; (C) from 35 to 80 parts by weight of at least one low temperature tackifying agent; (D) from 0.1 to 25 parts by weight of at least one polyisocyanate; and (E) from 0.1 to 30 parts by weight of at least one curing agent selected from the group consisting of aromatic nitroso compounds and aryl dioxime compounds, said aryl dioxime compounds being used in combination with from 2 to 3 parts by weight of at least one oxidizing agent.
Claim 5
Dependent Claim
22 words
A preformed adhesive composition according to claim 1 containing from 0.05 to 3 parts by weight of at least one vulcanization promoter.
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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |