US3887641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing resin for printing ink
Assignee: Eneos Corp
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Filing: 1973-12-03
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Granted: 1975-06-03
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Expires: 1993-12-03
Abstract
Abstract A method for producing a resin for printing ink, which comprises reacting a dicyclopentadiene resin with an unsaturated carboxylic acid or its anhydride to form an acid-modified resin, and reacting the acid-modified resin with a phenolformaldehyde resin at a temperature of 100* to 250*C., the amount of the phenolformaldehyde resin being at least 5 g per 100 g the acid-modified resin, thereby to form a resin having a softening point of at least 100*C.
Inventors
- 👤 Shozo Tsuchiya
- 👤 Hideo Hayashi
- 👤 Hisatake Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:21
CPC Classifications
C; C09; C09D; C09D155/00; C09D155/04; C08; C08C; C08C19/00; C08F; C08F8/00; C08G; C08G81/00; C09D11/00; C09D11/02; C09D11/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A METHOD FOR PRODUCING A RESIN FOR PRINTING INK, WHICH COMPRISES REACTING A CYCLOPENTADIENE RESIN OBTAINED BY HEATPOLYMERIZING AT A TEMPERATURE OF 250*C-350*C CYCLOPENTADIENE, DICYCLOPENTADIENE OR AN ALKYL-SUBSTITUTED DERIVATIVE THEREOF IN THE ABSENCE OF A CATLYST WITH AN UNSATURATED CARBOXYLIC ACID OR ITS ANHYDRIDE TO FORM AN ACID-MODIFIED RESIN WHEREIN THE AMOUNT OF THE UNSATURATED CARBOXYLIC ACID OR ITS ANHYDRIDE IS 0.01 TO 0.5 MOL PER 100 G OF THE CYCLOPENTADIENE RESIN, AND REACTING THE ACID-MODIFIED RESIN WITH A RESOL-TYPE PHENOL-FORMALDEHYDE RESIN AT TEMPERATURE OF 100* TO 250*C., THE AMOUNT OF THE PHENOL-FORMALDEHYDE RESIN BEGIN AT LEAST 5 G PER 100 G OF THE ACID-MODIFIED RESIN, THEREBY TO FORM A RESIN HAVING A SOFTENING POINT OF AT LEAST 100*C.
Claim 2
Independent Claim
119 words
A METHOD FOR PRODUCING A RESIN FOR PRINTING INK, WHICH COMPRISES REACTING A CYCLOPENTADIENE RESIN OBTAINED BY HEATPOLYMERIZING AT A TEMPERATURE OF 250*C-350*C CYCLOPENTADIENE, DICYCLOPENTADIENE OR AN ALKYL-SUBSTITUTED DERIVATIVE THEREOF IN THE ABSENCE OF A CATLYST WITH AN UNSATURATED CARBOXYLIC ACID OR ITS ANHYDRIDE TO FORM AN ACID-MODIFIED RESIN WHEREIN THE AMOUNT OF THE UNSATURATED CARBOXYLIC ACID OR ITS ANHYDRIDE IS 0.01 TO 0.5 MOL PER 100 G OF THE CYCLOPENTADIENE RESIN, AND REACTING THE ACID-MODIFIED RESIN WITH A RESOL-TYPE PHENOL-FORMALDEHYDE RESIN AT TEMPERATURE OF 100* TO 250*C., THE AMOUNT OF THE PHENOL-FORMALDEHYDE RESIN BEGIN AT LEAST 5 G PER 100 G OF THE ACID-MODIFIED RESIN, THEREBY TO FORM A RESIN HAVING A SOFTENING POINT OF AT LEAST 100*C.
Claim 3
Independent Claim
120 words
A method for producing a resin for printing ink, which comprises reacting a cyclopentadiene resin obtained by heat-polymerizing at a temperature of 250*-350*C cyclopentadiene, dicyclopentadiene or an alkyl-substituted derivative thereof in the absence of a catalyst with an unsaturated carboxylic acid or its anhydride to form an acid-modified resin wherein the amount of the unsaturated carboxylic acid or its anhydride is 0.01 to 0.5 mol per 100 g of the cyclopentadiene resin, and reacting the acid-modified resin with a resol-type phenol-formaldehyde resin at a temperature of 100* to 250*C., the amount of the phenol-formaldehyde resin being at least 5 g per 100 g of the acid-modified resin, thereby to form a resin having a softening point of at least 100*C.
Claim 4
Independent Claim
120 words
A method for producing a resin for printing ink, which comprises reacting a cyclopentadiene resin obtained by heat-polymerizing at a temperature of 250*-350*C cyclopentadiene, dicyclopentadiene or an alkyl-substituted derivative thereof in the absence of a catalyst with an unsaturated carboxylic acid or its anhydride to form an acid-modified resin wherein the amount of the unsaturated carboxylic acid or its anhydride is 0.01 to 0.5 mol per 100 g of the cyclopentadiene resin, and reacting the acid-modified resin with a resol-type phenol-formaldehyde resin at a temperature of 100* to 250*C., the amount of the phenol-formaldehyde resin being at least 5 g per 100 g of the acid-modified resin, thereby to form a resin having a softening point of at least 100*C.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein the heat-polymerization is conducted in the presence of a solvent and the monomer concentration is adjusted to 30 to 80 percent by weight.
Claim 6
Dependent Claim
41 words
The method of claim 1 wherein the unsaturated carboxylic acid or its anhydride is a member selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, maleic anhydride, tetrahydrophthalic acid, tetrahydrophthalic anhydride, fumaric acid, citraconic acid, and itaconic acid.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |