US4097434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition
Assignee: Shell USA Inc
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Filing: 1976-09-01
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Granted: 1978-06-27
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Expires: 1996-09-01
Abstract
Abstract An adhesive composition, a pressure sensitive adhesive tape or label, and a process to bond a porous substrate are disclosed wherein the adhesive composition employed comprises a thermoplastic elastomeric block polymer, a tackifying resin, and a low saturates content oil.
Inventors
- 👤 George T. Coker, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/387; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
An adhesive composition comprising: (a) 100 parts by weight of a block copolymer having at least two monoalkenyl arene polymer end blocks A and at least one elastomeric conjugated diene mid block B, said blocks A comprising 10-30% by weight of the copolymer; (b) about 50 to about 200 parts by weight of a tackifying resin compatible with block B; and (c) about 10 to about 100 parts by weight of a rubber compound oil plasticizer having a saturates content of less than about 15% by weight, an aromatics content of above about 55% by weight, a specific gravity of 0.9 to 1.1 and a viscosity at 212° F of 80 to 1,000 SSU.
Claim 2
Dependent Claim
114 words
An adhesive composition comprising: (a) 100 parts by weight of a block copolymer having at least two monoalkenyl arene polymer end blocks A and at least one elastomeric conjugated diene mid block B, said blocks A comprising 10-30% by weight of the copolymer; (b) about 50 to about 200 parts by weight of a tackifying resin compatible with block B; and (c) about 10 to about 100 parts by weight of a rubber compound oil plasticizer having a saturates content of less than about 15% by weight, an aromatics content of above about 55% by weight, a specific gravity of 0.9 to 1.1 and a viscosity at 212° F of 80 to 1,000 SSU.
Claim 3
Dependent Claim
47 words
A composition according to claim 1 wherein said block copolymer is selectively hydrogenated such that no more than 25% of the aromatic double bonds of block A are reduced by hydrogenation while at least 75% of the aliphatic double bonds of block B are reduced by hydrogenation.
Claim 4
Dependent Claim
31 words
A composition according to claim 1 wherein said tackifying resin is selected from the group consisting of diene-olefin copolymers, hydrogenated resins, esters of resin, polyterpenes, terpenephenol resins, and polymerized mixed olefins.
Claim 5
Dependent Claim
47 words
A composition according to claim 1 including between about 10 and about 200 parts by weight of a high softening point resin compatible with block A, said high softening point resin being selected from the group consisting of coumaroneindene resins, vinyl toluene-alphamethyl styrene copolymers and polyindene resins.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |