Patent US5208075A successfully refreshed from Google Patents.
US5208075A
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Sizing agent for staple fiber and filament yarns
Assignee: BASF SE
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Filing: 1992-05-26
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Granted: 1993-05-04
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Expires: 2012-05-26
Abstract
Abstract Water-soluble or water-dispersible grafts of proteins with monoethylenically unsaturated monomers are used as sizing agents for staple fiber and filament yarns.
Inventors
- 👤 Matthias Kroner
- 👤 Manfred Niessner
- 👤 Heinrich Hartmann
- 👤 Dieter Voelker
- 👤 Juergen Hartmann
- 👤 Holger Schoepke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/15; D06M2200/00; D06M2200/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A method for sizing staple fiber and filament yarns comprising: contacting said staple fiber and filament yarns with an aqueous liquor of a sizing agent, wherein said sizing agent is a grafted protein obtained by free radical polymerization of (a) a monoethylenically unsaturated monomer in the presence of (b) a protein in water in a weight ratio (a):(b) of (0.5-90):(99.5-10).
Claim 2
Independent Claim
60 words
A method for sizing staple fiber and filament yarns comprising: contacting said staple fiber and filament yarns with an aqueous liquor of a sizing agent, wherein said sizing agent is a grafted protein obtained by free radical polymerization of (a) a monoethylenically unsaturated monomer in the presence of (b) a protein in water in a weight ratio (a):(b) of (0.5-90):(99.5-10).
Claim 3
Dependent Claim
71 words
The method according to claim 1, wherein said grafted protein is obtained by free radical polymerization of (a) a monomer selected from the group consisting of monoethylenically unsaturated C 3 -C 5 -carboxylic acids, esters, amides, and nitrile, and vinyl esters of saturated C 2 -C 4 -carboxylic acids, styrene and mixtures thereof in the presence of (b) casein, gelatin, bone glue or a protein from soybeans, cereals, corn or peas.
Claim 4
Dependent Claim
58 words
The method according to claim 1, wherein said grafted protein is obtained by free radical polymerization of (a) acrylic acid, methacrylic acid, an ester of acrylic or methacrylic acid with a monohydric C 1 -C 8 -alcohol, an N-(C 1 -C 4 -alkoxymethyl)-acrylamide or an N-(C 1 -C 4 -alkoxymethyl)-methyacrylamide in water in the presence of (b) casein.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |