Patent FR1396129A successfully refreshed from Google Patents.
US4400486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic adhesive composition containing cyclopentadiene resin
Assignee: Zeon Corp
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Filing: 1982-08-18
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Granted: 1983-08-23
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Expires: 2002-08-18
Abstract
Abstract An acrylic adhesive composition comprising an acrylic polymer as a base resin and a modified cyclopentadiene resin having a softening point of at least 60° C. obtained by copolymerizing (a) 85 to 50% by weight of a cyclopentadiene monomer and (b) 15 to 50% by weight of a polar vinyl monomer or a hydrogenation product of said cyclopentadiene resin as a tackifier.
Inventors
- 👤 Riso Iwata
- 👤 Akira Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L45/00; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
63 words
An acrylic adhesive composition comprising an acrylate ester polymer as a base resin and a modified cyclopentadiene resin having a softening point of at least 60° C. obtained by copolymerizing (a) 85 to 50% by weight of a cyclopentadiene monomer and (b) 15 to 50% by weight of a polar vinyl monomer or a hydrogenation product of said cyclopentadiene resin as a tackifier.
Claim 2
Dependent Claim
63 words
An acrylic adhesive composition comprising an acrylate ester polymer as a base resin and a modified cyclopentadiene resin having a softening point of at least 60° C. obtained by copolymerizing (a) 85 to 50% by weight of a cyclopentadiene monomer and (b) 15 to 50% by weight of a polar vinyl monomer or a hydrogenation product of said cyclopentadiene resin as a tackifier.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the amount of the tackifier is 5 to 100 parts by weight per 100 parts by weight of the base resin.
Claim 4
Dependent Claim
35 words
The composition of claim 1 wherein the acrylate ester polymer is a homopolymer or copolymer derived from 30-100% by weight of an acrylic ester and 0-70% by weight of another ethylenically unsaturated monomer copolymerizable therewith.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the modified cyclopentadiene resin has a softening point of 60° to 150° C.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein the modified cyclopentadiene resin is produced by heat polymerization.
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein the cyclopentadiene monomer is cyclopentadiene, an alkyl-substituted cyclopentadiene, or a dimer, trimer or codimer thereof.
Claim 8
Dependent Claim
28 words
The composition of claim 1 wherein the polar vinyl monomer is an unsaturated alcohol, an unsaturated carboxylic acid, an unsaturated ester, an unsaturated nitrile or an unsaturated ether.
Claim 9
Dependent Claim
59 words
An acrylic adhesive composition comprising an acrylate ester polymer as a base resin and a hydrogenation product of a modified cyclopentadiene resin having a softening point of at least 60° C. obtained by copolymerizing (a) 85 to 50% by weight of a cyclopentadiene monomer and (b) 15 to 50% by weight of a polar vinyl monomer as a tackifier.
Claim 10
Dependent Claim
59 words
An acrylic adhesive composition comprising an acrylate ester polymer as a base resin and a hydrogenation product of a modified cyclopentadiene resin having a softening point of at least 60° C. obtained by copolymerizing (a) 85 to 50% by weight of a cyclopentadiene monomer and (b) 15 to 50% by weight of a polar vinyl monomer as a tackifier.
References Cited (Backward Citations)
US4299950A
Cited
US4330448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |