Patent US4279959A successfully refreshed from Google Patents.
US4279959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble copolymers containing amide-polyaldehyde thermosettable system
Assignee: Rohm and Haas Co
•
Filing: 1979-12-28
•
Granted: 1981-07-21
•
Expires: 1999-12-28
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
2026-11-07 21:48
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/38; D21H17/39; C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/58; C08F246/00; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; D06M15/29; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/2246; Y10T442/2549; Y10T442/2566
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
101 words
A process for making a fabric or paper which comprises treating a textile or paper substrate with (1) 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 50% of the total monomers, by weight, and, optionally, (2) an external crosslinker and curing the treated substrate at an elevated temperature.
Claim 2
Dependent Claim
101 words
A process for making a fabric or paper which comprises treating a textile or paper substrate with (1) 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 50% of the total monomers, by weight, and, optionally, (2) an external crosslinker and curing the treated substrate at an elevated temperature.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the copolymer is thermosettable and wherein (B) comprises an ethylenically unsaturated unsubstituted amide monomer.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein the copolymer is in a copolymer latex.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein the polyaldehyde is glyoxal.
Claim 6
Dependent Claim
20 words
The process of claim 4 in which substantially all of the glyoxal in the latex is bonded to the copolymer.
Claim 7
Dependent Claim
23 words
The process of claim 5, the copolymer 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 process 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 process 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 process of claim 8 in which the amide monomers of (A) and (B) are acrylamide, methacrylamide or a mixture thereof.
Claim 11
Dependent Claim
16 words
The process of claim 9, the copolymer being a copolymer of an ethylenically unsaturated carboxylic acid.
Claim 12
Dependent Claim
16 words
The process of claim 10 the copolymer having a glass transition temperature below about 35° C.
Claim 13
Dependent Claim
24 words
The process of claim 11, the copolymer being a copolymer of at least about 60% by weight of esters of acrylic or methacrylic acid.
Claim 14
Dependent Claim
52 words
The process of claim 3 the copolymer 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
46 words
The process of claim 13, the copolymer 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
20 words
The process of claim 1 wherein the external crosslinker is an aminoplast up to 25% of the copolymer by weight.
Claim 17
Dependent Claim
24 words
The process 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
17 words
The process of claim 16 the copolymer having 0.5 to 1.0 moles of polyaldehyde per amide group.
Claim 19
Dependent Claim
10 words
A treated paper made by the process of claim 1.
Claim 20
Dependent Claim
10 words
A treated fabric made by the process 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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |