US4136071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed block polymer adhesive
Assignee: Avery Dennison Corp
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Filing: 1976-05-18
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Granted: 1979-01-23
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Expires: 1996-05-18
Abstract
Abstract A broad performance pressure-sensitive adhesive based upon A-B-A and A-B block copolymers. The adhesive possesses a superior balance of properties when extruded and comprises a major proportion of styrene-isoprene-styrene A-B-A block copolymer elastomers and a minor proportion of styrene-isoprene A-B block copolymer elastomers, in its elastomeric component. Suitable proportions of tackifier resins for these elastomers also are included.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:51
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A pressure-sensitive adhesive composition comprising a thermoplastic elastomeric component and a resin component; said thermoplastic elastomeric component consisting essentially of about 50-90 parts of a linear or radial A-B-A block copolymer and about 10-50 parts of a simple A-B block copolymer, said A-blocks being derived from styrene or styrene homologues and said B-blocks being derived from isoprene; said resin component consisting essentially of about 20-300 parts of tackifier resin for said elastomeric component; all of said parts being parts per one hundred parts by weight of the thermoplastic elastomeric component.
Claim 2
Dependent Claim
90 words
A pressure-sensitive adhesive composition comprising a thermoplastic elastomeric component and a resin component; said thermoplastic elastomeric component consisting essentially of about 50-90 parts of a linear or radial A-B-A block copolymer and about 10-50 parts of a simple A-B block copolymer, said A-blocks being derived from styrene or styrene homologues and said B-blocks being derived from isoprene; said resin component consisting essentially of about 20-300 parts of tackifier resin for said elastomeric component; all of said parts being parts per one hundred parts by weight of the thermoplastic elastomeric component.
Claim 3
Dependent Claim
36 words
A pressure-sensitive adhesive composition according to claim 1, which comprises about 60-80 parts of the A-B-A copolymer and about 20-40 parts of the A-B copolymer, per one hundred parts by weight of the thermoplastic elastomeric component.
Claim 4
Dependent Claim
27 words
A pressure-sensitive adhesive composition according to claim 1, which comprises about 50-150 parts of tackifier resin per one hundred parts by weight of the thermoplastic elastomeric component.
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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |