US3860549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting coating compositions comprising methylolated amide interpolymers of high acid content in combination with low molecular weight polyhydric alcohols
Assignee: DeSoto Inc
•
Filing: 1973-07-30
•
Granted: 1975-01-14
•
Expires: 1993-07-30
Abstract
Abstract A thermosetting coating composition adapted to deposit coatings which cure on baking to provide a pencil hardness of 2H or harder, and which possess improved flexibility and impact resistance, comprising non-gelled interpolymer of monoethylenically unsaturated monomers comprising from 7-20% by weight of methylolated acrylamide, monoethylenic carboxylic acid in an amount to provide in the interpolymer a ratio of carboxyl to N-methylol functionality of from .5:1 to .9:1, and at least 50% by weight from the group of styrene, vinyl toluene and methyl methacrylate, in admixture with a polyhydric alcohol having a molecular weight of up to about 6,000, in an amount to provide a ratio of hydroxy to N-methylol functionality of from .06:1 to .6: 1.
Inventors
- 👤 Kazys Sekmakas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/14; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; C08L; C08L67/00; C08L67/04; C08L71/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
23 words
A coating composition as recited iN claim 1 in which said polyhydric alcohol has a molecular weight in the range of 350-5, 000.
Claim 2
Dependent Claim
24 words
A coating composition as recited in claim 1 in which said polyhydric alcohol has an hydroxy functionality of from about 3 to about 4.
Claim 3
Dependent Claim
17 words
A coating composition as recited in claim 1 in which said polyhydric alcohol includes the ester group.
Claim 4
Dependent Claim
16 words
A coating composition as recited in claim 1 in which said polyhydric alcohol is a polyester.
Claim 5
Dependent Claim
36 words
A coating composition as recited in claim 5 in which said polyester is a lactone adduct having a molecular weight in the range of 350-5,000, and an hydroxy functionality of from about 3 to about 4.
Claim 6
Dependent Claim
26 words
A coating composition as recited in claim 6 in which the ratio of hydroxy to N-methylol functionalities is in the range of from .06:1 to .3:1.
Claim 7
Dependent Claim
24 words
A coating composition as recited in claim 6 in which the lactone is a caprolactone, and it is reacted with trihydric or tetrahydric alcohol.
Claim 8
Dependent Claim
16 words
A coating composition as recited in claim 8 in which said polyhydric alcohol has the formula:
Claim 9
Dependent Claim
27 words
A coating composition as recited in claim 1 in which said ester is an ester of an alkanol containing 8-18 carbon atoms with a monoethylenic carboxylic acid.
Claim 10
Dependent Claim
15 words
A coating composition as recited in claim 1 in which said acid is acrylic acid.
Claim 11
Dependent Claim
29 words
A coating composition as recited in claim 1 in which the monomer components of said interpolymer are copolymerized to form said interpolymer in the presence of said polyhydric alcohol.
Claim 12
Dependent Claim
20 words
A coating composition as recited in claim 1 in which said interpolymer comprises at least 60% by weight of styrene.
Claim 13
Dependent Claim
23 words
A coating compositon as recited in claim 1 in which said interpolymer and said polyhydric alcohol are in solution in an organic solvent.
Claim 14
Dependent Claim
30 words
A coating composition as recited in claim 14 in which said organic solvent is water miscible and said interpolymer is placed in water solution with the aid of a base.
Claim 15
Dependent Claim
27 words
A coating composition as recited in claim 1 in which said interpolymer is formed by polymerization in organic solvent solution in the presence of an alkaline catalyst.
References Cited (Backward Citations)
US3107227A
Cited
US3118852A
Cited
US2940943A
Cited
US2978437A
Cited
US2978437B1
Cited
US3011993A
Cited
US3057812A
Cited
US3007887A
Cited
US3079434A
Cited
US3163623A
Cited
US3492252A
Cited
US3380851A
Cited
US3551525A
Cited
US3812070A
Cited
US3738971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |