Patent US6181271B1 successfully refreshed from Google Patents.
US3887752A
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Textile treatment with amphoteric starch esters
Assignee: Hubinger Co
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Filing: 1973-06-21
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Granted: 1975-06-03
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Expires: 1993-06-21
Abstract
Abstract Amphoteric starches, especially high amylose starches, containing basic (cationic) and acidic (anionic) groups, preferably tertiary amino, cyanamide or quaternary amino (cationic) and sulfonic acid or sulfonate groups or carboxylic or carboxylate, or phosphate or phosphonate (anionic), with or without nonionic groups, e.g., hydroxyalkylether, in the starch molecule, are esterified to produce compositions which are especially useful for sizing threads of yarns of fibers such as, for example, mixed cotton fibers and polyester fibers, viz., polyethylene terephthalate fibers, glass fibers, and hydrophobic fibers that are difficult to size.
Inventors
- 👤 Lee H Elizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:42
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/16; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31786; Y10T428/31971
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
126 words
A PROCESS OF SIZING TEXTILE FIBERS WHICH COMPRISES COATING SUCH FIBERS WITH A GELATINIZED AQUEOUS DISPERSION OF AN ACYLATED AMPHOTERIC STARCH, SAID ACYLATED AMPHOTERIC STARCH CONTAINING CATIONIC, ANIONIC AND ACYL GROUPS CONNECTED TO THE STARCH MOLECULES THROUGH CARBON AND OXYGEN, THE CATIONIC AND ANIONIC GROUPS EACH CONSTITUTING 0.5 TO 6 GROUPS PER 100 ANHYDROGLUCOSE UNITS, AND THE ACYL GROUPS CONSTITUTING 2.5 TO 7% BY WEIGHT, CALCULATED AS ACETYL GROUPS, ON A DRY BASIS, SAID CATIONIC GROUPS BEING FROM THE CLASS CONSISTING OF TERTIARY AMINO, TERTIARY AMINE SALT, QUATERNARY AMINO, QUATERNARY AMINE SALT AND CYANAMIDE AND SAID ANIONIC GROUPS BEING FROM THE CLASS CONSISTING OF SULFONIC, SULFONATE, CARBOXYLIC, CARBOXYLATE, PHOSPHATE AND PHOSPHONATE, SAID CATIONIC GROUPS AND SAID ANIONIC GROUPS BEING CONNECTED TO OXYGEN OF THE STARCH MOLECULE.
Claim 2
Dependent Claim
126 words
A PROCESS OF SIZING TEXTILE FIBERS WHICH COMPRISES COATING SUCH FIBERS WITH A GELATINIZED AQUEOUS DISPERSION OF AN ACYLATED AMPHOTERIC STARCH, SAID ACYLATED AMPHOTERIC STARCH CONTAINING CATIONIC, ANIONIC AND ACYL GROUPS CONNECTED TO THE STARCH MOLECULES THROUGH CARBON AND OXYGEN, THE CATIONIC AND ANIONIC GROUPS EACH CONSTITUTING 0.5 TO 6 GROUPS PER 100 ANHYDROGLUCOSE UNITS, AND THE ACYL GROUPS CONSTITUTING 2.5 TO 7% BY WEIGHT, CALCULATED AS ACETYL GROUPS, ON A DRY BASIS, SAID CATIONIC GROUPS BEING FROM THE CLASS CONSISTING OF TERTIARY AMINO, TERTIARY AMINE SALT, QUATERNARY AMINO, QUATERNARY AMINE SALT AND CYANAMIDE AND SAID ANIONIC GROUPS BEING FROM THE CLASS CONSISTING OF SULFONIC, SULFONATE, CARBOXYLIC, CARBOXYLATE, PHOSPHATE AND PHOSPHONATE, SAID CATIONIC GROUPS AND SAID ANIONIC GROUPS BEING CONNECTED TO OXYGEN OF THE STARCH MOLECULE.
Claim 3
Dependent Claim
126 words
A process of sizing textile fibers which comprises coating such fibers with a gelatinized aqueous Dispersion of an acylated amphoteric starch, said acylated amphoteric starch containing cationic, anionic and acyl groups connected to the starch molecules through carbon and oxygen, the cationic and anionic groups each constituting 0.5 to 6 groups per 100 anhydroglucose units, and the acyl groups constituting 2.5 to 7% by weight, calculated as acetyl groups, on a dry basis, said cationic groups being from the class consisting of tertiary amino, tertiary amine salt, quaternary amino, quaternary amine salt and cyanamide and said anionic groups being from the class consisting of sulfonic, sulfonate, carboxylic, carboxylate, phosphate and phosphonate, said cationic groups and said anionic groups being connected to oxygen of the starch molecule.
Claim 4
Dependent Claim
126 words
A process of sizing textile fibers which comprises coating such fibers with a gelatinized aqueous Dispersion of an acylated amphoteric starch, said acylated amphoteric starch containing cationic, anionic and acyl groups connected to the starch molecules through carbon and oxygen, the cationic and anionic groups each constituting 0.5 to 6 groups per 100 anhydroglucose units, and the acyl groups constituting 2.5 to 7% by weight, calculated as acetyl groups, on a dry basis, said cationic groups being from the class consisting of tertiary amino, tertiary amine salt, quaternary amino, quaternary amine salt and cyanamide and said anionic groups being from the class consisting of sulfonic, sulfonate, carboxylic, carboxylate, phosphate and phosphonate, said cationic groups and said anionic groups being connected to oxygen of the starch molecule.
Claim 5
Dependent Claim
15 words
A process as claimed in claim 1 in which said textile fibers comprise glass fibers.
Claim 6
Dependent Claim
33 words
A process as claimed in claim 1 in which said acylated amphoteric starch has an amylose content of at least 50% by weight and an acetyl content of 6 to 7% by weight.
Claim 7
Dependent Claim
44 words
A process as claimed in claim 1 in which said acylated amphoteric starch also contains oxyalkylene groups containing 2 to 4 carbon atoms connected to the starch molecule through carbon and oxygen, said oxyalkylene groups constituting up to 36 groups per 100 anhydroglucose units.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 4 in which said oxyalkylene groups are oxyethylene groups.
Claim 9
Dependent Claim
19 words
A process as claimed in claim 1 in which said acylated amphoteric starch is a thin boiling corn starch.
Claim 10
Dependent Claim
20 words
A process as claimed in claim 1 wherein said anionic groups are from the group consisting of sulfonic and sulfonate.
Claim 11
Dependent Claim
55 words
A process as claimed in claim 7 wherein said sulfonic acid and said sulfonate contain a radical of the formula -R3-SO3X wherein R3 is alkylene of three to four carbons connected through carbon of the alkylene group to oxygen of the starch molecule and X is hydrogen, sodium, potassium, lithium, ammonium, calcium, strontium or barium.
Claim 12
Dependent Claim
17 words
A process as claimed in claim 1 wherein said cationic groups contain a radical of the formula
Claim 13
Dependent Claim
57 words
A process as claimed in claim 1 wherein said cationic groups are ethylene diethylamine groups connected through carbon of the ethylene group to oxygen of the starch molecule and said anionic groups are -R3-SO3X wherein R3 is alkylene of three to four carbon atoms connected through oxygen of the starch molecule, and X is hydrogen or sodium.
Claim 14
Dependent Claim
14 words
A process as claimed in claim 1 wherein said cationic groups are cyanamide groups.
Claim 15
Dependent Claim
30 words
A process as claimed in claim 1 wherein said cationic groups are quaternary amino in which the hydrocarbon groups attached to the amino nitrogen contain one to six carbon atoms.
Claim 16
Dependent Claim
24 words
A process as claimed in claim 1 wherein the ratio of cationic groups to anionic groups is within the range of 3:1 to 1:3.
References Cited (Backward Citations)
US3036935A
Cited
US3022289A
Cited
US3167468A
Cited
US3481771A
Cited
US3562103A
Cited
US3622563A
Cited
US3676205A
Cited
US3615311A
Cited
US3746558A
Cited
US3793310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |