US3890285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing ink compositions
Assignee: Artience Co Ltd
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Filing: 1973-10-19
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Granted: 1975-06-17
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Expires: 1993-10-19
Abstract
Abstract An alcohol-soluble and/or water-soluble, printing ink composition comprising, as a vehicle, a resinous varnish composed mainly of a resin having an acid number of at least 180 and prepared by reacting dicyclopentadiene or methyldicyclopentadiene with an unsaturated dibasic acid anhydride.
Inventors
- 👤 Masujiro Sumita
- 👤 Masatoshi Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:32
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/04; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
A PROCESS FOR THE PREPARATION OF A RESIN HAING AN ACID NUMBER OF AT LEAST 180 AND SOFTENING POINT OF 100*-200*C, CHARACTERIZED BY REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF DICYCLOPENTADIENE AND METHYLDICYCLOPENTADIENE, WITH AN UNSATURATED DIBASIC ACID ANHYDRIDE IN MOLAR RATIOS OF FROM 70/30 TO 40/60 AT 170*-330*C FOR 20 MINUTES TO 10 HOURS.
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE PREPARATION OF A RESIN HAING AN ACID NUMBER OF AT LEAST 180 AND SOFTENING POINT OF 100*-200*C, CHARACTERIZED BY REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF DICYCLOPENTADIENE AND METHYLDICYCLOPENTADIENE, WITH AN UNSATURATED DIBASIC ACID ANHYDRIDE IN MOLAR RATIOS OF FROM 70/30 TO 40/60 AT 170*-330*C FOR 20 MINUTES TO 10 HOURS.
Claim 3
Dependent Claim
54 words
A resin for use as a resinous varnish in an alcohol-soluble or water-soluble ink composition, the resin comprising (a) dicyclopentadiene or methyl dicyclopentadiene units and (b) maleic anhydride units in respective molar ratios (a/b) of from 70/30 to 40/60 and having an acid number of at least 180 and a softening point of 100*-200*C.
Claim 4
Dependent Claim
54 words
A resin for use as a resinous varnish in an alcohol-soluble or water-soluble ink composition, the resin comprising (a) dicyclopentadiene or methyl dicyclopentadiene units and (b) maleic anhydride units in respective molar ratios (a/b) of from 70/30 to 40/60 and having an acid number of at least 180 and a softening point of 100*-200*C.
References Cited (Backward Citations)
US3306868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |