US4693846A
Expired / Lapsed
US
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Urethane-modified rosin esters
Assignee: MARPAX A NV CORP
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Filing: 1986-05-09
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Granted: 1987-09-15
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Expires: 2006-05-09
Abstract
Abstract The present invention encompasses a urethane-modified rosin ester which is derived from an isocyanate and a hydroxyl-functional rosin esterification product of a dimerized rosin. The urethane-modified rosin esters, having a high softening point and good compatibility with hydrocarbon solvents, good gelability and good squalene resistance, are particularly suitable as binders for inks such as fast conversion lithographic inks.
Inventors
- 👤 Robert M. Piccirilli
- 👤 Roger M. Christenson
- 👤 Frederick A. Falk
- 👤 Joseph M. Makhlouf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G18/64; C08G18/6492; C09; C09D; C09D11/00; C09D11/02; C09D11/08; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
31 words
A urethane-modified rosin ester comprising a reaction product of: (a) a hydroxyl-functional rosin esterification product of: (i) a rosin polyacid comprising a dimerized rosin, (ii) a polyfunctional alcohol; (b) an isocyanate.
Claim 2
Dependent Claim
31 words
A urethane-modified rosin ester comprising a reaction product of: (a) a hydroxyl-functional rosin esterification product of: (i) a rosin polyacid comprising a dimerized rosin, (ii) a polyfunctional alcohol; (b) an isocyanate.
Claim 3
Dependent Claim
33 words
A urethane-modified rosin ester of claim 1, wherein the dimerized rosin is in an amount ranging from about 15 to 85 percent or higher based on the weight of the acid functional reactant.
Claim 4
Dependent Claim
14 words
A urethane-modified rosin ester of claim 1, wherein the alcohol is a polyhydric alcohol.
Claim 5
Dependent Claim
17 words
A urethane-modified rosin ester of claim 3, wherein the alcohol is pentaerythritol, trimethylolpropane, glycerine, or mixtures thereof.
Claim 6
Dependent Claim
30 words
A urethane-modified rosin ester of claim 1, wherein the urethane is in an amount ranging from about 1 to 8 percent based on the total weight of the resin solids.
Claim 7
Dependent Claim
21 words
A urethane-modified rosin ester of claim 5, wherein the urethane is in an amount ranging from about 1 to 5 percent.
Claim 8
Dependent Claim
13 words
A urethane-modified rosin ester of claim 1, wherein the isocyanate is a polyisocyanate.
Claim 9
Dependent Claim
21 words
A urethane-modified rosin ester of claim 7, wherein the polyisocyanate is toluene diisocyanate, 4,4'-diphenylmethane diisocyanate, 4,4'-dicyclohexylmethane diisocyanate or polymerized 4,4'-diphenylmethane diisocyanate.
Claim 10
Dependent Claim
14 words
An ink composition comprising as a binder a urethane-modified rosin ester of claim 1.
Claim 11
Dependent Claim
26 words
A printing process for use in lithographic printing in which is employed ink as recited in claim 9 for printing a material which is squalene resistant.
Claim 12
Dependent Claim
11 words
A printed material obtained by the process according to claim 10.
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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |