Patent US2661313A successfully refreshed from Google Patents.
US2661313A
Expired / Lapsed
US
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Process for improving the resistance to shrinking and felting of fabrics
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-01-13
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Granted: 1953-12-01
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Expires: 1970-01-13
Abstract
No abstract record available.
Inventors
- 👤 Kern E Folkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:10
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS OF IMPROVING THE RESISTANCE TO SHRINKING AND FELTING OF FABRICS COMPRISING ANIMAL YARNS WHICH COMPRISES WETTING OUT THE FABRIC IN AN ACIDIC AQUEOUS COLLOIDAL SOLUTION OF (1) A PARTIALLY POLYMERIZED POSITIVELY CHARGED METHYL ETHER OF METHYLOL MELAMINE CONDENSATION PRODUCT CONTAINING FROM 2.8 TO 6 MOLS OF COMBINED FORMALDEHYDE PER MOL OF MELAMINE AND (2) A WATER-SOLUBLE ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF ACETIC ACID, HYDROCYACETIC ACID AND FORMIC ACID: EXTRACTING THE FABRIC TO DEPOSIT FROM 3.5 TO 8% BY WEIGHT, BASED ON THE FABRIC, OF SAID CONDENSATION PRODUCT; AND HEATING SAID FABRIC AT TEMPERATURES BETWEEN 200 AND 325* F. TO INSOLUBILIZE SAID CONDENSATION PRODUCT.
Claim 2
Dependent Claim
108 words
A PROCESS OF IMPROVING THE RESISTANCE TO SHRINKING AND FELTING OF FABRICS COMPRISING ANIMAL YARNS WHICH COMPRISES WETTING OUT THE FABRIC IN AN ACIDIC AQUEOUS COLLOIDAL SOLUTION OF (1) A PARTIALLY POLYMERIZED POSITIVELY CHARGED METHYL ETHER OF METHYLOL MELAMINE CONDENSATION PRODUCT CONTAINING FROM 2.8 TO 6 MOLS OF COMBINED FORMALDEHYDE PER MOL OF MELAMINE AND (2) A WATER-SOLUBLE ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF ACETIC ACID, HYDROCYACETIC ACID AND FORMIC ACID: EXTRACTING THE FABRIC TO DEPOSIT FROM 3.5 TO 8% BY WEIGHT, BASED ON THE FABRIC, OF SAID CONDENSATION PRODUCT; AND HEATING SAID FABRIC AT TEMPERATURES BETWEEN 200 AND 325* F. TO INSOLUBILIZE SAID CONDENSATION PRODUCT.
References Cited (Backward Citations)
US2191362A
Cited
US2345543A
Cited
US2417014A
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US2485080A
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US2429073A
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US2395791A
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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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |