Patent US4524093A successfully refreshed from Google Patents.
US4524093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric coating composition with low formaldehyde evolution
Assignee: Goodrich Corp
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Filing: 1984-04-30
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Granted: 1985-06-18
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Expires: 2004-04-30
Abstract
Abstract An improved polymeric latex coating composition, which substantially comprises an aqueous emulsion of alkyl acrylate monomers; copolymerized with acrylonitrile, itaconic acid, and N-methylol acrylamide; and containing a glyoxal curing resin and an acid catalyst, substantially reduces the evolution of formaldehyde and exhibits good durability.
Inventors
- 👤 William E. deVry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; C; C08; C08L; C08L61/00; C08L61/20; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
In an aqueous acrylic latex coating composition, the improvement which essentially comprises incorporating into the latex from about 1% to about 15% by dry weight of an imidazolidone curing resin of the formula ##STR2## where X=--H, or --OH; and R=--CH 2 O--R' where R' is alkyl having 1-10 carbons, and from about 0.5% to about 10% by dry weight of a metal chloride-type acid catalyst wherein said improvement substantially reduces formaldehyde evolution during curing.
Claim 2
Dependent Claim
74 words
In an aqueous acrylic latex coating composition, the improvement which essentially comprises incorporating into the latex from about 1% to about 15% by dry weight of an imidazolidone curing resin of the formula ##STR2## where X=--H, or --OH; and R=--CH 2 O--R' where R' is alkyl having 1-10 carbons, and from about 0.5% to about 10% by dry weight of a metal chloride-type acid catalyst wherein said improvement substantially reduces formaldehyde evolution during curing.
Claim 3
Dependent Claim
60 words
A composition of claim 1 wherein the acrylic latex contains from about 45% to about 95% by dry weight of one or more alkyl acrylates or methacryates, from about 1% to about 15% by dry weight acrylonitrile, from about 1% to about 4% by dry weight itaconic acid, and from about 0.5% to about 4% by dry weight N-methylol acrylamide.
Claim 4
Dependent Claim
14 words
A composition of claim 1 wherein the catalyst comprises magnesium chloride and citric acid.
Claim 5
Dependent Claim
81 words
A process for substantially reducing the formaldehyde evolution from a fabric coating during curing which comprises the steps of applying to a fabric and curing an aqueous acrylic latex coating composition containing from about 1% to about 10% by dry weight of an imidazolidone curing resin having the formula ##STR3## where X=--H, or --OH; and R=--CH 2 O--R', where R' is alkyl having 1-10 carbons, and from about 0.5% to about 10% by dry weight of a metal chloride-type acid catalyst.
Claim 6
Dependent Claim
81 words
A process for substantially reducing the formaldehyde evolution from a fabric coating during curing which comprises the steps of applying to a fabric and curing an aqueous acrylic latex coating composition containing from about 1% to about 10% by dry weight of an imidazolidone curing resin having the formula ##STR3## where X=--H, or --OH; and R=--CH 2 O--R', where R' is alkyl having 1-10 carbons, and from about 0.5% to about 10% by dry weight of a metal chloride-type acid catalyst.
Claim 7
Dependent Claim
14 words
A process of claim 4 wherein the catalyst comprises magnesium chloride and citric acid.
Claim 8
Dependent Claim
62 words
A process of claim 4 wherein the acrylic latex coating composition contains from about 45% to about 95% by dry weight of one or more alkyl acrylates or methacrylates, from about 1% to about 15% by dry weight acrylonitrile, from about 1% to about 4% by dry weight itaconic acid, and from about 0.5% to about 4% by dry weight N-methylol acrylamide.
Claim 9
Dependent Claim
20 words
A composition of claim 1 wherein the imidazolidone is selected from the group consisting of di-methoxy-methyl-dihydroxy-ethylene urea and di-ethoxy-methyl-dihydroxy-ethylene urea.
Claim 10
Dependent Claim
20 words
A process of claim 4 wherein the imidazolidone is selected from the group consisting of di-methoxy-methyl-dihydroxy-ethylene urea and di-ethoxy-methyl-dihydroxy-ethylene urea.
Claim 11
Dependent Claim
19 words
A process of claim 4 wherein said acrylic latex coating composition is used as a backcoating for textile fabrics.
References Cited (Backward Citations)
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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) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |