US4199643A
Expired / Lapsed
US
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Water-insoluble copolymers containing amide-polyaldehyde thermosettable system
Assignee: Rohm and Haas Co
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Filing: 1977-11-03
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Granted: 1980-04-22
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Expires: 1997-11-03
Abstract
Abstract Disclosed is a water-insoluble addition copolymer of an ethylenically unsaturated unsubstituted amide and at least one other ethylenically unsaturated monomer comprising sufficient amide groups mono-functionally bonded to a polyaldehyde to render the copolymer thermosettable. The copolymer is adapted for use as or for formulation in a binder. Such a binder is readily made from a copolymer latex and is useful in processes for the preparation of products such as nonwoven fabrics and bonded papers.
Inventors
- 👤 Dominic R. Falgiatore
- 👤 William D. Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:40
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; D06M15/29; C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/58; C08F246/00; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/38; D21H17/39; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2352; Y10T442/2369; Y10T442/2549; Y10T442/2566; Y10T442/259
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
68 words
A water-insoluble addition copolymer of (A) a monomer which is the product of an ethylenically unsaturated unsubstituted amide monomer condensed with one aldehyde group of a polyaldehyde, the product having at least one free aldehyde group, and (B) at least one other ethylenically unsaturated monomer; the amide monomer component of (A) and any unsubstituted amide monomer of (B) totaling up to 25% of the total monomers, by weight.
Claim 2
Dependent Claim
68 words
A water-insoluble addition copolymer of (A) a monomer which is the product of an ethylenically unsaturated unsubstituted amide monomer condensed with one aldehyde group of a polyaldehyde, the product having at least one free aldehyde group, and (B) at least one other ethylenically unsaturated monomer; the amide monomer component of (A) and any unsubstituted amide monomer of (B) totaling up to 25% of the total monomers, by weight.
Claim 3
Dependent Claim
17 words
The copolymer of claim 1 being thermosettable and wherein (B) comprises an ethylenically unsaturated unsubstituted amide monomer.
Claim 4
Dependent Claim
12 words
The copolymer of claim 2 in the form of a copolymer latex.
Claim 5
Dependent Claim
11 words
The copolymer of claim 3 in which the polyaldehyde is glyoxal.
Claim 6
Dependent Claim
21 words
The copolymer latex of claim 4 in which substantially all of the glyoxal in the latex is bonded to the copolymer.
Claim 7
Dependent Claim
21 words
The copolymer of claim 5 having about 0.2 to about 0.8 of a mole of glyoxal per mole of amide groups.
Claim 8
Dependent Claim
25 words
The copolymer of claim 6 in which the amide monomers of (A) and (B) total about 0.5% to about 12% of the monomers, by weight.
Claim 9
Dependent Claim
32 words
The copolymer of claim 7 in which the amide monomers total about 3% to 6%, by weight, and having about 0.4 to about 0.6 mole of glyoxal per mole of amide groups.
Claim 10
Dependent Claim
21 words
The copolymer of claim 8 in which the amide monomers of (A) and (B) are acrylamide, methacrylamide or a mixture thereof.
Claim 11
Dependent Claim
14 words
The copolymer of claim 9 being a copolymer of an ethylenically unsaturated carboxylic acid.
Claim 12
Dependent Claim
14 words
The copolymer of claim 10 having a glass transition temperature below about 35° C.
Claim 13
Dependent Claim
22 words
The copolymer of claim 11 being a copolymer of at least about 60% by weight of esters of acrylic or methacrylic acid.
Claim 14
Dependent Claim
50 words
The copolymer of claim 3 being a copolymer of, by weight, 20 to 96% ethyl acrylate, 0 to 96% propyl or butyl acrylate or a mixture thereof, 0 to 25% acrylonitrile, 0 to 50% methyl methacrylate, 3 to 6% acrylamide, 0 to 2% itaconic acid and 1 to 2% glyoxal.
Claim 15
Dependent Claim
44 words
The copolymer of claim 13 being a copolymer of 70 to 92.5% ethyl acrylate, 3 to 5% acrylonitrile, 0 to 25% butyl acrylate, 0 to 10% methyl methacrylate, 3 to 4% acrylamide, 0.5 to 1.5% itaconic acid and 1 to 2% glyoxal, by weight.
Claim 16
Dependent Claim
21 words
A composition comprising the copolymer of claim 1 and, up to 25% of the copolymer by weight, an aminoplast crosslinking agent.
Claim 17
Dependent Claim
24 words
The composition of claim 15 wherein the aminoplast is urea or melamine and the amount is up to 7% of the copolymer by weight.
Claim 18
Dependent Claim
15 words
The copolymer of claim 16 having 0.5 to 1.0 moles of polyaldehyde per amide group.
Claim 19
Dependent Claim
48 words
A process for producing the copolymer of claim 1 comprising reacting a polyaldehyde and an ethylenically unsaturated unsubstituted amide monomer to form a reaction product which is subsequently or simultaneously polymerized with at least one other ethylenically unsaturated monomer in the presence of a free radical polymerization initiator.
Claim 20
Dependent Claim
14 words
The process of claim 18 in which polymerizing is effected in an aqueous latex.
Claim 21
Dependent Claim
49 words
The process of claim 19 wherein a mixture comprising water, glyoxal, an ethylenically unsaturated unsubstituted amide monomer, a water soluble free radical initiator and an anionic surfactant is heated to a temperature sufficient to initiate free radical polymerization and subsequently at least one additional ethylenically unsaturated monomer is added.
Claim 22
Dependent Claim
9 words
A nonwoven fabric comprising the copolymer of claim 1.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |