US4251403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for sizing filament yarn utilizing an improved warp size composition of PVal, urea and saccharide
Assignee: EIDP Inc
•
Filing: 1979-12-05
•
Granted: 1981-02-17
•
Expires: 1999-12-05
Abstract
Abstract An improved warp size for filament yarn is provided consisting essentially of polyvinyl alcohol, urea, and mono- and di-saccharides, such as sucrose, which when applied to filament yarn from aqueous solution provides excellent abrasion resistance, low shedding, freedom from skinning, and outstanding ease of removal.
Inventors
- 👤 Richard W. Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333; C; C08; C08K; C08K5/00; C08K5/16; C08K5/21; C08L; C08L29/00; C08L29/02; C08L29/04; D06M13/00; D06M13/10; D06M13/144; D06M13/322; D06M13/402; D06M13/432; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A process for sizing filament yarn with a composition consisting essentially of (a) from about 40 to about 90% by weight, on a dry basis, of polyvinyl alcohol having a degree of hydrolysis of from about 88 to about 100 mol % and a solution viscosity of from about 5 to about 50 mPa·s measured as a 4% aqueous solution at a temperature of 20° C., (b) from about 5 to about 30% by weight of urea, and (c) from about 5 to about 30% by weight of saccharide selected from the group consisting of mono- and di-saccharides.
Claim 2
Dependent Claim
98 words
A process for sizing filament yarn with a composition consisting essentially of (a) from about 40 to about 90% by weight, on a dry basis, of polyvinyl alcohol having a degree of hydrolysis of from about 88 to about 100 mol % and a solution viscosity of from about 5 to about 50 mPa·s measured as a 4% aqueous solution at a temperature of 20° C., (b) from about 5 to about 30% by weight of urea, and (c) from about 5 to about 30% by weight of saccharide selected from the group consisting of mono- and di-saccharides.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said polyvinyl alcohol has a solution viscosity of from about 10 to about 35 mPa·s.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein said polyvinyl alcohol is present in the amount of from about 50 to about 75% by weight.
Claim 5
Dependent Claim
23 words
The process of claim 3 wherein said saccharide is selected from the group consisting of sucrose, glucose, fructose, maltose, lactose, and invert sugar.
Claim 6
Dependent Claim
22 words
The process of claim 4 wherein said saccharide is present in the amount of from about 10 to about 25% by weight.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein said saccharide is sucrose.
Claim 8
Dependent Claim
22 words
The process of claim 6 wherein the urea is present in the amount of from about 10 to about 25% by weight.
Claim 9
Dependent Claim
33 words
The process of claim 7 wherein a composition consisting essentially of about 60% by weight of polyvinyl alcohol, about 20% by weight of urea and about 20% by weight of sucrose is employed.
Claim 10
Dependent Claim
34 words
The process of claims 1, 4, 7 or 8 wherein said composition is employed in the form of an aqueous solution having a solids content of from about 3 to about 25% by weight.
Claim 11
Dependent Claim
22 words
The process of claim 9 wherein said aqueous solution has a solids content of from about 5 to about 12% by weight.
References Cited (Backward Citations)
US2595276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |