US4391745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desizing agent and process for preparation thereof
Assignee: Diamalt AG
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Filing: 1981-07-16
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Granted: 1983-07-05
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Expires: 2001-07-16
Abstract
Abstract This invention deals with the removal of starch and starch-containing substances from various fabrics and the like. This is accomplished by simultaneously using an admixture of starch decomposing enzymes and an appropriate surfactant.
Inventors
- 👤 Maria Denkler
- 👤 Frederic Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/12; D06L1/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
66 words
A composition for removing starch and starch-containing sizing materials comprising an emulsion or dispersion of 10-40% of high temperature aqueous amylase enzyme effective as a desizing agent at about 100° C. or higher, an anionic surfactant present in an amount of 0.5% and a non-ionic surfactant selected from the group consisting of alkyl oxalkylates, alkaryl oxalkylates and fatty acid ethyloxylates present 10-60% with the balance water.
Claim 2
Dependent Claim
66 words
A composition for removing starch and starch-containing sizing materials comprising an emulsion or dispersion of 10-40% of high temperature aqueous amylase enzyme effective as a desizing agent at about 100° C. or higher, an anionic surfactant present in an amount of 0.5% and a non-ionic surfactant selected from the group consisting of alkyl oxalkylates, alkaryl oxalkylates and fatty acid ethyloxylates present 10-60% with the balance water.
Claim 3
Dependent Claim
14 words
A composition as in claim 1, wherein the anionic surfactant is a paraffin sulfonate.
Claim 4
Dependent Claim
14 words
A composition as in claim 1, wherein the non-ionic surfactant is an alkylphenol oxethylate.
Claim 5
Dependent Claim
22 words
A composition as in claim 1, containing 0.5-20% paraffin sulfonate, 10-40% alkylphenol oxethylate, and 10-40% of the enzyme, the remainder being water.
Claim 6
Dependent Claim
23 words
A composition as in claim 1, containing 1-10% paraffin sulfonate, 15-25% alkylphenol oxylate, 25-40% of the enzyme preparation, with the remainder being water.
Claim 7
Dependent Claim
24 words
A composition as in claim 1, wherein the surfactant comprises essentially 5-15 parts of paraffin sulfonate sodium salt and 50-70 parts of alkylphenol oxethylate.
Claim 8
Dependent Claim
14 words
A composition as in claim 1, wherein the components are emulsified with one another.
Claim 9
Dependent Claim
62 words
A composition for removing starch and starch-containing sizing materials consisting essentially of an emulsion or dispersion of 10-40% of a starch-decomposing aqueous high temperature amylase enzyme, effective as a desizing agent at about 100° C. or higher and 10-60% of a non-ionic surfactant selected from the group consisting of alkylphenol oxalkylate, oxalkylated fatty alcohols and fatty acid othyloxylate, with the balance water.
Claim 10
Dependent Claim
62 words
A composition for removing starch and starch-containing sizing materials consisting essentially of an emulsion or dispersion of 10-40% of a starch-decomposing aqueous high temperature amylase enzyme, effective as a desizing agent at about 100° C. or higher and 10-60% of a non-ionic surfactant selected from the group consisting of alkylphenol oxalkylate, oxalkylated fatty alcohols and fatty acid othyloxylate, with the balance water.
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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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |