US3650671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for finishing cellulosic textile materials with n-methylol compounds
Assignee: Hoesch Chemie GmbH
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Filing: 1969-03-14
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Granted: 1972-03-21
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Expires: 1989-03-14
Abstract
Abstract Finishing treatment of textile materials such as cotton is effected by impregnating such material with a cross-linking, resin-forming, nitrogen-containing methylol compound such as dimethylol urea, dimethylol dihydroxy-ethylene urea, methylol acrylamide in the presence of an acid catalyst, like trichloro acetic acid either alone or preferably in mixture with its salts or a mixture of a thermally unstable acid with a salt of trichloro acetic acid.
Inventors
- 👤 Gerhard Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:21
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
21 words
The process of claim 1, in which the cross-linked textile material is heated to a temperature of at least 100* C.
Claim 2
Dependent Claim
18 words
The process of claim 1, in which the salt of trichloro acetic acid is its alkali metal salt.
Claim 3
Dependent Claim
35 words
The process of claim 1, in which the mixture of a cross-linking acid and a salt of trichloro acetic acid is a mixture of hydrochloric acid and an alkali metal salt of trichloro acetic acid.
Claim 4
Dependent Claim
35 words
The process of claim 1, in which the mixture of a cross-linking acid and a salt of trichloro acetic acid is a mixture of oxalic acid and an alkali metal salt of trichloro acetic acid.
Claim 5
Dependent Claim
35 words
The process of claim 1, in which the mixture of a cross-linking acid and a salt of trichloro acetic acid is a mixture of formic acid and an alkali metal salt of trichloro acetic acid.
Claim 6
Dependent Claim
16 words
The process of claim 1, in which the cross-linking, resin-forming, nitrogen-containing methylol compound is dimethylol urea.
Claim 7
Dependent Claim
18 words
The process of claim 1, in which the cross-linking, resin-forming, nitrogen-containing methylol compound is dimethylol dihydroxy ethylene urea.
Claim 8
Dependent Claim
16 words
The process of claim 1, in which the cross-linking, resin-forming, nitrogen-containing methylol compound is methylol acrylanide.
Claim 9
Dependent Claim
35 words
The process of claim 1, additionally including the steps of curing the heated and dried cross-linked textile material and subjecting it to a further heat treatment at a temperature of at least about 140* C.
Claim 10
Dependent Claim
44 words
The process of claim 1, in which the proportion of the salt of trichloro acetic acid and the cross-linking acid in the acid catalyst is such that, after heating and drying the impregnated textile material, an alkaline reaction of the textile material is established.
Claim 11
Dependent Claim
22 words
The process of claim 1, in which the textile material to be subjected to the finishing treatment is a cellulosic textile material.
Claim 12
Dependent Claim
21 words
The process of claim 1, in which the textile material to be subjected to the finishing treatment is a cotton fabric.
Claim 13
Dependent Claim
98 words
In a process for the finishing of a textile material comprising a cellulosic textile, the steps which comprise impregnating the textile material with an aqueous solution comprising a cross-linking, resin-forming, nitrogen-containing methylol compound and an acid cross-linking catalyst selected from the group consisting of trichloro acetic acid, a mixture of trichloro acetic acid and its salts, and a mixture of a thermally unstable cross-linking acid and a salt of trichloro acetic acid and heating and drying the impregnated textile material to cause cross-linking of the textile material with the nitrogen-containing methylol compound and to decompose the cross-linking catalyst.
Claim 14
Dependent Claim
26 words
The process of claim 14 which includes the step of admixing the acid cross-linking catalyst with the cross-linking nitrogen-containing methylol compound prior to the cross-linking reaction.
Claim 15
Dependent Claim
11 words
The process of claim 15 which is carried out without post-neutralization.
Claim 16
Dependent Claim
11 words
The process of claim 15 which is carried out without postrinsing.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |