Patent US4042553A successfully refreshed from Google Patents.
US4042553A
Expired / Lapsed
US
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Thermosetting vinyl ester emulsion copolymers
Assignee: Ingredion Inc
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Filing: 1973-03-12
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Granted: 1977-08-16
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Expires: 1993-03-12
Abstract
Abstract Vinyl ester emulsion copolymers are modified to introduce improved thermosetting cure capacity by including in the copolymer a proportion of a formaldehyde addition product with an allyl carbamate. These emulsions are useful as binders for fibers in non-woven fabrics where the improved cure confers superior resistance to home laundering in aqueous detergent solutions.
Inventors
- 👤 Martin K. Lindemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:10
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
An aqueous emulsion comprising an aqueous medium having colloidally suspended therein an aqueous emulsion copolymer consisting essentially of at least 85% of the copolymer of vinyl ester with a saturated aliphatic monocarboxylic acid containing up to 18 carbon atoms, and from 0.5-15% of the copolymer of monomers providing thermosetting characteristics and consisting essentially of mono N-methylol allyl carbamate.
Claim 2
Dependent Claim
58 words
An aqueous emulsion comprising an aqueous medium having colloidally suspended therein an aqueous emulsion copolymer consisting essentially of at least 85% of the copolymer of vinyl ester with a saturated aliphatic monocarboxylic acid containing up to 18 carbon atoms, and from 0.5-15% of the copolymer of monomers providing thermosetting characteristics and consisting essentially of mono N-methylol allyl carbamate.
Claim 3
Dependent Claim
24 words
An emulsion as recited in claim 1 in which said monomers providing thermosetting characteristics include a monoethylenic unsaturated amide selected from acrylamide or methacrylamide.
Claim 4
Dependent Claim
15 words
An emulsion as recited in claim 1 in which said vinyl ester is vinyl acetate.
Claim 5
Dependent Claim
20 words
An emulsion as recited in claim 1 in which said copolymer further includes from 0.5-3% of a monoethylenic carboxylic acid.
Claim 6
Dependent Claim
22 words
An emulsion as recited in claim 1 in which said monomers providing thermosetting characteristics are present in an amount of from 2-10%.
Claim 7
Dependent Claim
16 words
An emulsion as recited in claim 1 in which said aqueous medium includes a protective colloid.
Claim 8
Dependent Claim
65 words
An aqueous emulsion as recited in claim 1 in which said aqueous emulsion copolymer contains at least 90% of the copolymer of vinyl acetate, from 0.5-7% of the copolymer of mono-N-methylol allyl carbamate, and any balance of the copolymer consisting essentially of allyl carbamate, di-N-methylol allyl carbamate, and copolymerizable monoethylenic monomers selected from monoethylenic amide, monoetylenic alcohol, and from 0.5-3% of a monoethylenic carboxylic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |