US4172930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizes for textile fibers
Assignee: Kuraray Co Ltd
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Filing: 1978-03-07
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Granted: 1979-10-30
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Expires: 1998-03-07
Abstract
Abstract A size for textile fiber which comprises a modified polyvinyl alcohol type resin obtainable by the alkali saponification of a copolymer comprising a vinyl ester and an ethylenically unsaturated dicarboxylic acid substantially free from the monoester, diester and anhydride as essential and predominant copolymeric units. The size has excellent adhesive and cohesive strengths with respect to textile fibers as well as superior desizing properties and workability.
Inventors
- 👤 Koichi Kajitani
- 👤 Tohei Moritani
- 👤 Koji Moritani
- 👤 Makoto Shiraishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:21
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; C; C08; C08F; C08F8/00; C08F8/44; D06M15/263; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A size for textile fibers, which comprises: a modified polyvinyl alcohol resin obtained by alkali saponification of a copolymer which is obtained by copolymerization of a monomer mixture comprising a vinyl ester and an ethylenically unsaturated dicarboxylic acid as essential and predominant comonomers, wherein said monomer mixture is free of monoester, diester and anhydride derivatives of said dicarboxylic acid, and wherein the proportion of said dicarboxylic acid component in said copolymer is in the range of from 0.1 to 10 mole percent.
Claim 2
Dependent Claim
82 words
A size for textile fibers, which comprises: a modified polyvinyl alcohol resin obtained by alkali saponification of a copolymer which is obtained by copolymerization of a monomer mixture comprising a vinyl ester and an ethylenically unsaturated dicarboxylic acid as essential and predominant comonomers, wherein said monomer mixture is free of monoester, diester and anhydride derivatives of said dicarboxylic acid, and wherein the proportion of said dicarboxylic acid component in said copolymer is in the range of from 0.1 to 10 mole percent.
Claim 3
Dependent Claim
21 words
The size for textile fibers as set forth in claim 1 wherein said ethylenically unsaturated dicarboxylic acid component is itaconic acid.
Claim 4
Dependent Claim
29 words
The size for textile fibers as set forth in claim 1 wherein said ethylenically unsaturated dicarboxylic acid is selected from the group consisting of maleic acid and fumaric acid.
Claim 5
Dependent Claim
29 words
The size for textile fibers as set forth in claim 1 wherein the degree of saponification of said modified polyvinyl alcohol resin is not less than 30 mole percent.
Claim 6
Dependent Claim
41 words
The size for textile fibers as set forth in claim 1 wherein the degree of saponification of said modified polyvinyl alcohol resin is in the range of 30 to 95 mole percent, said size being especially suited for sizing filament fibers.
Claim 7
Dependent Claim
41 words
The size for textile fibers as set forth in claim 1 wherein the degree of saponification of said modified polyvinyl alcohol resin is in the range of 70 to 100 mole percent, said size being especially suited for sizing staple fibers.
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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |