US4070319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1975-03-11
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Granted: 1978-01-24
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Expires: 1995-03-11
Abstract
Abstract Sizing bath for a non-woven cellulose based substrate in which the bath has a pH of 2 to 12 and contains as sizing agent at least one anionic latex of at least one copolymer of which the vitreous transition temperature is -40 DEG C. to +120 DEG C. and of which the K value is 55 to 130, the copolymer containing in interpolymerised form:
Inventors
- 👤 Philippe Robert Raymond Carel
- 👤 Rene Paul Auguste Decamp
- 👤 Jean Perronin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:07
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/42; D21H17/43; D21H21/00; D21H21/14; D21H21/28
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
204 words
Sizing bath for a non-woven cellulose based substrate in which the bath has a pH of 2 to 12 and contains as sizing agent at least one anionic latex of at least one copolymer of which the vitreous transition temperature is -40° C to +120° C and of which the K value is 55 to 130, the copolymer containing in interpolymerized form: a. 35% to 80% by weight of at least one ester of acrylic and/or methacrylic acid with an alcohol containing 1 to 18 carbon atoms and/or at least one vinyl ester of a carboxylic acid containing 1 to 18 carbon atoms, b. 20% to 50% by weight of acrylic, methacrylic, crotonic or itaconic acid, or a mixture thereof, c. 0% to 20% by weight of at least one monomer having an ethylene linkage and at least one polar group or containing several ethylene linkages, d. 0% to 30% by weight of at least one halogenated or non-halogenated hydrocarbon containing at least one double bond and 2 to 18 carbon atoms, the latex having a pH of 2 to 7, and having the property of thickening by treatment with alkali, the amount of copolymer in said bath being 0.1% to 2% by weight.
Claim 2
Dependent Claim
204 words
Sizing bath for a non-woven cellulose based substrate in which the bath has a pH of 2 to 12 and contains as sizing agent at least one anionic latex of at least one copolymer of which the vitreous transition temperature is -40° C to +120° C and of which the K value is 55 to 130, the copolymer containing in interpolymerized form: a. 35% to 80% by weight of at least one ester of acrylic and/or methacrylic acid with an alcohol containing 1 to 18 carbon atoms and/or at least one vinyl ester of a carboxylic acid containing 1 to 18 carbon atoms, b. 20% to 50% by weight of acrylic, methacrylic, crotonic or itaconic acid, or a mixture thereof, c. 0% to 20% by weight of at least one monomer having an ethylene linkage and at least one polar group or containing several ethylene linkages, d. 0% to 30% by weight of at least one halogenated or non-halogenated hydrocarbon containing at least one double bond and 2 to 18 carbon atoms, the latex having a pH of 2 to 7, and having the property of thickening by treatment with alkali, the amount of copolymer in said bath being 0.1% to 2% by weight.
Claim 3
Dependent Claim
17 words
Sizing bath according to claim 1 wherein the vitreous transition temperature is 0° C. to 100° C.
Claim 4
Dependent Claim
17 words
Sizing bath according to claim 1 wherein the latex contains 25% to 40% by weight of copolymer.
Claim 5
Dependent Claim
16 words
Sizing bath according to claim 1 wherein the pH of the latex is 2.5 to 5.5.
Claim 6
Dependent Claim
20 words
Sizing bath according to claim 1 wherein the copolymer is a copolymer of acrylic ester, vinyl acetate and methacrylic acid.
Claim 7
Dependent Claim
22 words
Sizing bath according to claim 1 wherein the copolymer is a copolymer of acrylic ester, vinyl acetate, methacrylic acid and N-methylol acrylamide.
Claim 8
Dependent Claim
21 words
Sizing bath according to claim 1 wherein the copolymer is a copolymer of acrylic ester, methacrylic acid, acrylonitrile and N-methylol acrylamide.
Claim 9
Dependent Claim
22 words
Sizing bath according to claim 6 wherein the copolymer is a copolymer of butyl acrylate, vinyl acetate, methacrylic acid and N-methylol acrylamide.
Claim 10
Dependent Claim
12 words
Sizing bath according to claim 1 containing, in addition, an aminoplast resin.
Claim 11
Dependent Claim
17 words
Sizing bath according to claim 1 wherein the amount of copolymer is 0.5% to 1% by weight.
Claim 12
Dependent Claim
19 words
Sizing bath according to claim 1 containing, in addition 0.1% to 0.6% of a dyestuff or fluorescent brightening agent.
Claim 13
Dependent Claim
17 words
Sizing bath according to claim 11 wherein the dyestuff is an acid, direct, basic, or pigmentary dyestuff.
Claim 14
Dependent Claim
15 words
Sizing bath according to claim 1 containing, in addition, 1% to 5% of a filler.
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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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |