US3276838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating cellulosic textiles with methylol derivatives of tris(2-carbamoylethyl) phosphine and products thereof
Assignee: Individual
•
Filing: 1964-02-24
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Granted: 1966-10-04
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Leon H Chance
- 👤 Jr George L Drake
- 👤 Wilson A Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:19
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR TREATING CELLULOSIC TEXTILE MATERIALS TO RENDER THEM DIMENSIONALLY STABLE AND FLAME-, CREASE-, AND ROT-RESISTANT WHICH COMPRISES WETTING THE CELLULOSIC TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION OF (A) A WATER-SOLUBLE METHYLOL DERIVATIVE OF TRIS(2-CARBAMOYLETHYL)PHOSPHINE OBTAINED BY REACTING, AT ROOM TEMPERATURE AND IN AN ACIDIC AQUEUOUS SOLUTION, TRIS(2-CARBAMOYLETHYL)PHOSPHINE WITH AQUEOUS FORMALDEHYDE WITHIN THE RANGE OF AND INCLUDING THE MOLE RATIOS OF 1 TO 1 AND 1 TO 6, AND (B) AN ACID TYPE CATALYST AND HEAT CURING THE SO WETTED CELLULOSIC TEXTILE MATERIAL TO THE DRIED STATE.
Claim 2
Dependent Claim
88 words
A PROCESS FOR TREATING CELLULOSIC TEXTILE MATERIALS TO RENDER THEM DIMENSIONALLY STABLE AND FLAME-, CREASE-, AND ROT-RESISTANT WHICH COMPRISES WETTING THE CELLULOSIC TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION OF (A) A WATER-SOLUBLE METHYLOL DERIVATIVE OF TRIS(2-CARBAMOYLETHYL)PHOSPHINE OBTAINED BY REACTING, AT ROOM TEMPERATURE AND IN AN ACIDIC AQUEUOUS SOLUTION, TRIS(2-CARBAMOYLETHYL)PHOSPHINE WITH AQUEOUS FORMALDEHYDE WITHIN THE RANGE OF AND INCLUDING THE MOLE RATIOS OF 1 TO 1 AND 1 TO 6, AND (B) AN ACID TYPE CATALYST AND HEAT CURING THE SO WETTED CELLULOSIC TEXTILE MATERIAL TO THE DRIED STATE.
References Cited (Backward Citations)
US2809941A
Cited
US2812311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |