US4368316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of high-solids rosin-modified polyesters
Assignee: Sun Chemical Corp
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Filing: 1980-06-02
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Granted: 1983-01-11
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Expires: 2000-06-02
Abstract
Abstract Low molecular weight, 100-percent solids polyesters, which are useful in printing inks and overprint coatings, are made by the reaction of a polyol, a monobasic aliphatic carboxylic acid, rosin or modified-rosin acid, and a polycarboxylic acid or anhydride.
Inventors
- 👤 Sudhir L. Laddha
- 👤 Theodore Sulzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/104; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A process for preparing a 100%-solids polyester which consists of the steps of (1) heating at about 250° to 290° C. (a) a polyol, (b) a monobasic aliphatic carboxylic acid, and (c) rosin or a modified rosin until a product having an acid number of about 1 to 10 is obtained; (2) heating at about 150° to 210° C. the product of step (1) with (d) a polycarboxylic acid or anhydride; and (3) recovering a 100%-solids polyester product having an acid number of about 20 to 90, a hydroxyl number of about 20 to 400, and a molecular weight of about 100 to 1500.
Claim 2
Dependent Claim
104 words
A process for preparing a 100%-solids polyester which consists of the steps of (1) heating at about 250° to 290° C. (a) a polyol, (b) a monobasic aliphatic carboxylic acid, and (c) rosin or a modified rosin until a product having an acid number of about 1 to 10 is obtained; (2) heating at about 150° to 210° C. the product of step (1) with (d) a polycarboxylic acid or anhydride; and (3) recovering a 100%-solids polyester product having an acid number of about 20 to 90, a hydroxyl number of about 20 to 400, and a molecular weight of about 100 to 1500.
Claim 3
Dependent Claim
115 words
A process for preparing a 100%-solids polyester which consists of the steps of (1) heating at about 250° to 290° C. (a) 25≧60 parts of a polyol, (b) 5-50 parts of a monobasic aliphatic carboxylic acid, and (c) 5-95 parts of rosin or modified rosin until a product having an acid number of about 1 to 10 is obtained; (2) heating at about 150° to 210° C. the product of step (1) with (d) 10-30 parts of a polycarboxylic acid or anhydride; and (3) recovering a 100%-solids polyester product having an acid number of about 20 to 90, a hydroxyl number of about 20 to 400, and a molecular weight of about 100 to 1500.
Claim 4
Dependent Claim
115 words
A process for preparing a 100%-solids polyester which consists of the steps of (1) heating at about 250° to 290° C. (a) 25≧60 parts of a polyol, (b) 5-50 parts of a monobasic aliphatic carboxylic acid, and (c) 5-95 parts of rosin or modified rosin until a product having an acid number of about 1 to 10 is obtained; (2) heating at about 150° to 210° C. the product of step (1) with (d) 10-30 parts of a polycarboxylic acid or anhydride; and (3) recovering a 100%-solids polyester product having an acid number of about 20 to 90, a hydroxyl number of about 20 to 400, and a molecular weight of about 100 to 1500.
Claim 5
Dependent Claim
10 words
A 100%-solids polyester prepared by the process of claim 2.
Claim 6
Dependent Claim
33 words
In a solvent-free printing ink which comprises a resin, a crosslinking agent, a catalyst, and a colorant, the improvement wherein the resin is the 100%-solids polyester prepared by the process of claim 2.
Claim 7
Dependent Claim
30 words
In a coating composition which comprises a resin, a crosslinking agent, and a catalyst, the improvement wherein the resin is the 100%-solids polyester prepared by the process of claim 2.
Claim 8
Dependent Claim
28 words
A solvent-free printing ink which comprises (1) the 100%-solids polyester prepared by the process of claim 2, (2) a crosslinking agent, (3) a catalyst, and (4) a colorant.
Claim 9
Dependent Claim
24 words
A coating composition which comprises (1) the 100%-solids polyester prepared by the process of claim 2, (2) a crosslinking agent, and (3) a catalyst.
References Cited (Backward Citations)
CA460737A
Cited
CA599521A
Cited
US2065331A
Cited
US2060665A
Cited
GB563554A
Cited
US2346968A
Cited
US4100119A
Cited
US4040995A
Cited
US4113793A
Cited
US4079026A
Cited
US4181638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |