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US4622357A
Expired / Lapsed
US
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Pressure-sensitive adhesive compositions
Assignee: Arakawa Chemical Industries Ltd
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Filing: 1984-07-09
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Granted: 1986-11-11
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Expires: 2004-07-09
Abstract
Abstract A pressure-sensitive adhesive composition comprising a block rubber, a tackifying resin and a plasticizer as major components, the composition being characterized in that the tackifying resin is partially fumarized and/or partially maleinized, disproportionated rosin ester.
Inventors
- 👤 Seiichi Tsuchida
- 👤 Yoshihiro Kodama
- 👤 Hiroari Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:12
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
35 words
A pressure-sensitive adhesive composition comprising a block rubber, a tackifying resin and a plasticizer as major components, the composition being characterized in that the tackifying resin is partially fumarized and/or partially maleinized, disproportionated rosin ester.
Claim 2
Dependent Claim
35 words
A pressure-sensitive adhesive composition comprising a block rubber, a tackifying resin and a plasticizer as major components, the composition being characterized in that the tackifying resin is partially fumarized and/or partially maleinized, disproportionated rosin ester.
Claim 3
Dependent Claim
19 words
A composition as defined in claim 1 wherein the block rubber is polystyrene-polyisoprene-polystyrene block copolymer or polystyrene-polybutadiene-polystyrene block copolymer.
Claim 4
Dependent Claim
28 words
A composition as defined in claim 1 wherein the tackifying resin is fumarized or maleinized in a ratio of 1.3 to 20 mole % based on the rosin.
Claim 5
Dependent Claim
28 words
A composition as defined in claim 3 wherein the tackifying resin is fumarized or maleinized in a ratio of 2.6 to 13 mole % based on the rosin.
Claim 6
Dependent Claim
22 words
A composition as defined in claim 1 where in the ester serving as the tackifying resin is an ester of polyhydric alcohol.
Claim 7
Dependent Claim
15 words
A composition as defined in claim 5 wherein the polyhydric alcohol is glycerin or pentaerythritol.
Claim 8
Dependent Claim
20 words
A composition as defined in claim 1 wherein the tackifying resin has a softening point of 110° to 140° C.
Claim 9
Dependent Claim
20 words
A composition as defined in claim 7 wherein the tackifying resin has a softening point of 115° to 135° C.
Claim 10
Dependent Claim
30 words
A composition as defined in claim 1 wherein the tackifying resin has a molecular weight of about 1000 to about 1800 and an acid value of up to about 20.
Claim 11
Dependent Claim
22 words
A composition as defined in claim 1 wherein the ratio of the block rubber, tackifying resin and plasticizer by weight is 100:70-150:40-120.
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |