US4010130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated resin and compositions containing the same
Assignee: Arakawa Rinsan Kagaku Kogyo KK
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Filing: 1975-09-19
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Granted: 1977-03-01
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Expires: 1995-09-19
Abstract
Abstract A hydrogenated copolymer of a cyclopentadiene and an ethylenically unsaturated ester having a softening point of up to 150° C, an iodine value of 0 to 50, a saponification value of 4 to 330, a number average molecular weight of 200 to 800 and a ratio of weight average molecular weight to number average molecular weight of 1 to 2.5; and a hotmelt composition and pressure sensitive adhesive composition containing the above hydrogenated copolymer as a tackifier.
Inventors
- 👤 Kotaro Matsuo
- 👤 Katsuhisa Shimizu
- 👤 Michimasa Hoshiba
- 👤 Machio Chihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C09J131/00; C09J131/02; C09J131/04; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L45/00; Y; Y10; Y10S; Y10S525/00; Y10S525/94
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A hotmelt composition containing a copolymer of ethylene and ethylenically unsaturated monoester in an amount of 30 to 95% by weight and a tackifier in an amount of 70 to 5% by weight, said tackifier being a hydrogenated copolymer of a cyclopentadiene and an ethylenically unsaturated ester having a softening point of up to 150° C, an iodine value of 0 to 50, a saponification value of 4 to 330, a number average molecular weight of 200 to 800 and a ratio of weight average molecular weight to number average molecular weight of 1 to 2.5.
Claim 2
Dependent Claim
96 words
A hotmelt composition containing a copolymer of ethylene and ethylenically unsaturated monoester in an amount of 30 to 95% by weight and a tackifier in an amount of 70 to 5% by weight, said tackifier being a hydrogenated copolymer of a cyclopentadiene and an ethylenically unsaturated ester having a softening point of up to 150° C, an iodine value of 0 to 50, a saponification value of 4 to 330, a number average molecular weight of 200 to 800 and a ratio of weight average molecular weight to number average molecular weight of 1 to 2.5.
Claim 3
Dependent Claim
56 words
The hotmelt composition according to claim 1 wherein said copolymer of ethylene and ethylenically unsaturated monoester contains 55 to 95% by weight of ethylene and has a melt index of 0.1 to 500 and said ethylenically unsaturated monoester is at least one compound selected from the group consisting of vinyl acetate, methyl acrylate and ethyl acrylate.
Claim 4
Dependent Claim
36 words
The hotmelt composition according to claim 2 wherein said copolymer of ethylene and ethylenically unsaturated monoester is ethylene-vinyl acetate containing 55 to 95% by weight of ethylene and has a melt index of 2.5 to 400.
Claim 5
Dependent Claim
32 words
The hotmelt composition according to claim 1 further containing wax in an amount not exceeding three times the total weight of said tackifier and said copolymer of ethylene and ethylenically unsaturated monoester.
References Cited (Backward Citations)
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US2689232A
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US2731370A
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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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |