US4659768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting fluorocarbon polymer coatings
Assignee: DeSoto Inc
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Filing: 1986-02-03
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Granted: 1987-04-21
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Expires: 2006-02-03
Abstract
Abstract There is disclosed a thermosetting solvent solution coating composition comprising volatile organic solvent having dissolved therein at least about 45% of a fluorocarbon polymer together with at least about 10% of a hydroxy-functional organic soluble copolymer of from 3% to 8% of 2-hydroxyethyl acrylate, balance consisting essentially of nonreactive monoethylenically unsaturated monomers, and an aminoplast curing agent in an amount to cure the hydroxy-functional copolymer, These coatings exhibit improved water spot resistance and minimum color change and gloss reduction on exterior exposure.
Inventors
- 👤 Anthony J. Tortorello
- 👤 Clark A. Higginbotham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:34
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/16; C08; C08L; C08L33/00; C08L33/04; C08L33/14; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
75 words
A thermosetting solvent solution coating composition comprising volatile organic solvent having dissolved therein at least about 45% of a fluorocarbon polymer together with at least about 10% of an hydroxy-functional organic soluble copolymer of from 3% to 8% of 2-hydroxyethyl acrylate, balance consisting essentially of nonreactive monoethylenically unsaturated monomers, and an aminoplast curing agent in an amount to cure said hydroxy-functional copolymer, said proportions being by weight based on the total weight of resin solids.
Claim 2
Dependent Claim
75 words
A thermosetting solvent solution coating composition comprising volatile organic solvent having dissolved therein at least about 45% of a fluorocarbon polymer together with at least about 10% of an hydroxy-functional organic soluble copolymer of from 3% to 8% of 2-hydroxyethyl acrylate, balance consisting essentially of nonreactive monoethylenically unsaturated monomers, and an aminoplast curing agent in an amount to cure said hydroxy-functional copolymer, said proportions being by weight based on the total weight of resin solids.
Claim 3
Dependent Claim
11 words
A coating composition as recited in claim 1 which is unpigmented.
Claim 4
Dependent Claim
17 words
A coating composition as recited in claim 1 in which said fluorocarbon polymer is polyvinylidene fluoride homopolymer.
Claim 5
Dependent Claim
23 words
A coating composition as recited in claim 1 in which said aminoplast resin is present in an amount of from 3% to 20%.
Claim 6
Dependent Claim
25 words
A coating composition as recited in claim 4 in which said fluorocarbon polymer is present in an amount of from about 70% to about 80%.
Claim 7
Dependent Claim
25 words
A coating composition as recited in claim 5 in which said acrylic copolymer is present in an amount of from about 15% to about 30%.
Claim 8
Dependent Claim
27 words
A coating composition as recited in claim 6 in which said nonreactive monomers consist of acrylic acid and methacrylic acid esters with C 1 -C 12 alcohols.
Claim 9
Dependent Claim
20 words
A coating composition as recited in claim 7 in which said nonreactive monomers include at least 50% of methyl methacrylate.
Claim 10
Dependent Claim
32 words
A coating composition as recited in claim 7 in which said methyl methacrylate is present in an amount of from 55% to 65%, and the balance of the copolymer is ethyl acrylate.
Claim 11
Dependent Claim
26 words
A coating composition as recited in claim 1 in which said aminoplast resin is a polyalkoxymethyl melamine present in an amount of from 4% to 10%.
Claim 12
Dependent Claim
81 words
An unpigmented thermosetting solvent solution coating composition comprising volatile organic solvent having dissolved therein from about 70% to about 80% of polyvinylidene homopolymer together with from about 15% to about 30% of an hydroxy-functional organic soluble copolymer of from 3% to 8% of 2-hydroxyethyl acrylate, balance acrylic acid and methacrylic acid esters with C 1 -C 12 alcohols, and from 3% to 20% of an aminoplast curing agent, said proportions being by weight based on the total weight of resin solids.
Claim 13
Dependent Claim
81 words
An unpigmented thermosetting solvent solution coating composition comprising volatile organic solvent having dissolved therein from about 70% to about 80% of polyvinylidene homopolymer together with from about 15% to about 30% of an hydroxy-functional organic soluble copolymer of from 3% to 8% of 2-hydroxyethyl acrylate, balance acrylic acid and methacrylic acid esters with C 1 -C 12 alcohols, and from 3% to 20% of an aminoplast curing agent, said proportions being by weight based on the total weight of resin solids.
Claim 14
Dependent Claim
37 words
A coating composition as recited in claim 11 in which said acrylic esters include at least 50% of methyl methacrylate, and said aminoplast resin is a polyalkoxymethyl melamine present in an amount of from 4% to 10%.
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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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |