US3658458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-step reaction of textile materials with multi-functional groups reactive under different catalytic conditions
Assignee: Deering Milliken Research Corp
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Filing: 1967-12-18
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Granted: 1972-04-25
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Expires: 1987-12-18
Abstract
Abstract Cellulosic fabrics are modified in two steps with compounds containing at least one group reactive under conditions of acid catalysis and at least one group reactive under conditions of alkaline catalysis, e.g., N-methylol acrylamides. In conducting the process, either the acid or the alkaline catalyzed reaction may be run first; the fabric may be formed into a garment subsequent to the first reaction but prior to the second reaction and an alkaline catalyst may be used which is substantially neutral on the fabric at ambient temperatures but becomes strongly alkaline at elevated temperatures.
Inventors
- 👤 Donald J Gale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:37
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/41; D06M13/412; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
197 words
A process for producing a durable press garment which comprises a. impregnating a cellulosic textile fabric with (1) a polyfunctional, organic creaseproofing compound selected from the group consisting of wherein R1 is selected from the group consisting of hydrogen, lower alkyl; R2 is selected from the group consisting of hydrogen and lower alkyl; R3 is selected from the group consisting of hydrogen and methyl; X is selected from the group consisting of sulfur and oxygen; R5 is selected from the group consisting of -CH2CH2- and and Y is a halogen; and (2) an acidic catalyst; b. reacting said creaseproofing compound and hydroxy groups of cellulose to form an ether linkage therebetween; c. thereafter impregnating said cellulosic textile material with an alkaline catalyst which is substantially neutral on the fabric but becomes strongly alkaline at temperatures in excess of 80* C; d. drying said fabric at a temperature insufficient to initiate substantial reaction e. cutting said fabric into garment sections; f. sewing said sections to form a garment; g. pressing said garment in a desired configuration; and h. subjecting said garment to conditions whereby said impregnated fabric is activated for substantial reaction to form a stable, crosslinked garment.
Claim 2
Dependent Claim
39 words
The process of claim 2 wherein during the final curing the moisture level of the fabric is maintained below about 20 percent in excess of the regain moisture level of said fabric until after the crosslinking reaction has occurred.
Claim 3
Dependent Claim
18 words
The process as defined in claim 2 wherein the pressing step and the reaction step are conducted simultaneously.
Claim 4
Dependent Claim
14 words
The process as defined in claim 2 wherein the polyfunctional compound is N-methylol acrylamide.
Claim 5
Dependent Claim
14 words
The process as defined in claim 2 wherein the polyfunctional compound is N-methylol haloacetamide.
Claim 6
Dependent Claim
12 words
A cellulosic textile fabric produced according to the process of claim 1.
Claim 7
Dependent Claim
12 words
A cellulosic textile fabric produced according to the process of claim 2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |