US4040995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High solids overprint varnish
Assignee: DeSoto Inc
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Filing: 1976-08-09
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Granted: 1977-08-09
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Expires: 1996-08-09
Abstract
Abstract A fluid overprint varnish containing less than about 30% of volatile organic solvent and which cures on baking is provided, said varnish consisting essentially of a mixture of: (1) an hydroxy functional saturated oil-modified polyester based on a blend of pentaerythritol or higher functional polyhydric alcohol with a diol having a neo-structure; (2) a liquid low volatile dihydric alcohol; and (3) a liquid hexafunctional malamine resin, preferably hexamethoxymethyl malamine.
Inventors
- 👤 Kazys Sekmakas
- 👤 George E. Gotschall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:12
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/104; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08L; C08L61/00; C08L61/20; C08L61/26; C08L61/28; C08L67/00; C08L67/08; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
187 words
A fluid overprint varnish containing less than about 30% of volatile organic solvent and which cures on baking, said varnish consisting essentially of a mixture of: 1. an hydroxy functional, oil-modified polyester resin consisting essentially of; A. a polyhydric alcohol containing at least four hydroxy groups per molecule; B. diol having a neo-structure, said diol being 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate; C. a dicarboxylic acid component; and D. a saturated oil or fatty acid derived therefrom; the oil-modified polyester having an equivalent ratio of carboxyl to hydroxyl functionalities of from 0.5 to 0.8 equivalents of carboxyl per equivalent of hydroxyl, said neo-structured diol providing from 20% to 45% of the total hydroxy functionality in said polyester, and the fatty acid in said oil or fatty acid providing from 10 to 40% of the total carboxyl functionality in the polyester, 2. liquid low volatile diol; and 3. liquid hexafunctional melamine resin; said oil-modified polyester constituting from about 10 - 50% of the mixture, the liquid diol constituting from about 10 - 40% of the mixture, and the balance of the mixture of the three components consisting essentially of said liquid melamine resin.
Claim 2
Dependent Claim
187 words
A fluid overprint varnish containing less than about 30% of volatile organic solvent and which cures on baking, said varnish consisting essentially of a mixture of: 1. an hydroxy functional, oil-modified polyester resin consisting essentially of; A. a polyhydric alcohol containing at least four hydroxy groups per molecule; B. diol having a neo-structure, said diol being 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate; C. a dicarboxylic acid component; and D. a saturated oil or fatty acid derived therefrom; the oil-modified polyester having an equivalent ratio of carboxyl to hydroxyl functionalities of from 0.5 to 0.8 equivalents of carboxyl per equivalent of hydroxyl, said neo-structured diol providing from 20% to 45% of the total hydroxy functionality in said polyester, and the fatty acid in said oil or fatty acid providing from 10 to 40% of the total carboxyl functionality in the polyester, 2. liquid low volatile diol; and 3. liquid hexafunctional melamine resin; said oil-modified polyester constituting from about 10 - 50% of the mixture, the liquid diol constituting from about 10 - 40% of the mixture, and the balance of the mixture of the three components consisting essentially of said liquid melamine resin.
Claim 3
Dependent Claim
14 words
A varnish as recited in claim 1 in which said polyhydric alcohol is pentaerythritol.
Claim 4
Dependent Claim
19 words
A varnish as recited in claim 1 in which said dicarboxylic acid component consists essentially of a phthalic acid.
Claim 5
Dependent Claim
18 words
A varnish as recited in claim 3 in which said phthalic acid is orthophthalic acid or phthalic anhydride.
Claim 6
Dependent Claim
24 words
A varnish as recited in claim 1 in which said dicarboxylic acid component includes up to about 15% of a monoethylenically unsaturated carboxylic acid.
Claim 7
Dependent Claim
29 words
A varnish as recited in claim 1 in which up to about 10% of the carboxyl functionality contained in the components of said polyester is provided by benzoic acid.
Claim 8
Dependent Claim
19 words
A varnish as recited in claim 1 in which the volatile solvent content of said varnish is from 10-20%.
Claim 9
Dependent Claim
17 words
A varnish as recited in claim 1 in which said component (D) is constituted by fatty acid.
Claim 10
Dependent Claim
17 words
A varnish as recited in claim 8 in which said fatty acid is coconut oil fatty acid.
Claim 11
Dependent Claim
27 words
A varnish as recited in claim 8 in which said polyester has an equivalent ratio of from 0.6 to 0.75 equivalents of carboxyl per equivalent of hydroxyl.
Claim 12
Dependent Claim
18 words
A varnish as recited in claim 1 in which said polyester has an acid value below about 30.
Claim 13
Dependent Claim
21 words
A varnish as recited in claim 1 in which said diol has an average molecular weight of at least about 350.
Claim 14
Dependent Claim
19 words
A varnish as recited in claim 12 in which said diol has an average molecular weight less than 2000.
Claim 15
Dependent Claim
14 words
A varnish as recited in claim 13 in which said diol is a polyether.
Claim 16
Dependent Claim
13 words
A varnish as recited in claim 14 in which said polyether is polyoxypropylene.
Claim 17
Dependent Claim
16 words
A varnish as recited in claim 1 in which said melamine resin is hexamethoxy methyl melamine.
Claim 18
Dependent Claim
39 words
A varnish as recited in claim 1 in which said oil-modified polyester constitutes from 20-40% of the mixture, said liquid low volatile diol constitutes from 15-35% of the mixture, and the melamine resin constitutes from 30-55% of the mixture.
Claim 19
Dependent Claim
158 words
A fluid overprint varnish containing less than about 30% of volatile organic solvent and which cures on baking, said varnish consisting essentially of a mixture of: 1. 10-50% of an hydroxy functional, oil-modified polyester resin having an acid value below about 30 and consisting essentially of: A. pentaerythritol; B. diol having a neo-structure, said diol being 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate; C. phthalic acid; and D. saturated fatty acid; the oil-modified polyester having an equivalent ratio of carboxyl to hydroxyl functionalities of from 0.5 to 0.8 equivalents of carboxyl per equivalent of hydroxyl, said neo-structured diol providing from 20% to 45% of the total hydroxy functionality in said polyester, and the fatty acid in said oil or fatty acid providing from 10 to 40% of the total carboxyl functionality in the polyester, 2. 10-40% of liquid low volatile polyether having an average molecular weight of 350-2000; and 3. the balance of the mixture of the three components consisting essentially of hexamethoxymethyl melamine.
Claim 20
Dependent Claim
158 words
A fluid overprint varnish containing less than about 30% of volatile organic solvent and which cures on baking, said varnish consisting essentially of a mixture of: 1. 10-50% of an hydroxy functional, oil-modified polyester resin having an acid value below about 30 and consisting essentially of: A. pentaerythritol; B. diol having a neo-structure, said diol being 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate; C. phthalic acid; and D. saturated fatty acid; the oil-modified polyester having an equivalent ratio of carboxyl to hydroxyl functionalities of from 0.5 to 0.8 equivalents of carboxyl per equivalent of hydroxyl, said neo-structured diol providing from 20% to 45% of the total hydroxy functionality in said polyester, and the fatty acid in said oil or fatty acid providing from 10 to 40% of the total carboxyl functionality in the polyester, 2. 10-40% of liquid low volatile polyether having an average molecular weight of 350-2000; and 3. the balance of the mixture of the three components consisting essentially of hexamethoxymethyl melamine.
Claim 21
Dependent Claim
65 words
A varnish as recited in claim 18 in which the volatile solvent content of said varnish is from 10-20%, said polyester has an equivalent ratio of from 0.6 to 0.75 equivalents of carboxyl per equivalent of hydroxyl and constitutes from 20-40% of the mixture, said liquid low volatile diol constitutes from 15-35% of the mixture, and the melamine resin constitutes from 30-55% of the mixture.
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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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |