US4722739A
Expired / Lapsed
US
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Dyeable smooth-dry crosslinked cellulosic material
Assignee: United States Department of Agriculture
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Filing: 1987-06-09
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Granted: 1988-02-02
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Expires: 2007-06-09
Abstract
Abstract Dyeable smooth-dry crosslinked cellulose fabrics characterized by an amino acid derived of an N-methylol crosslinking agent on a cellulose substrate which can be dyed with basic or direct dyes are disclosed. Exemplary amino acids can be selected from the group such as glycine, alanine, serine, aspartic acid and glutamic acid.
Inventors
- 👤 Eugene J. Blanchard
- 👤 Elwood J. Gonzales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:22
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/62; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06P3/6016; D06P5/00; D06P5/22; D06P5/225
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
20 words
A dyeable smooth-dry crosslinked cellulose characterized by a amino acid derivative of an N-methylol crosslinking agent on a cellulosic substrate.
Claim 2
Dependent Claim
20 words
A dyeable smooth-dry crosslinked cellulose characterized by a amino acid derivative of an N-methylol crosslinking agent on a cellulosic substrate.
Claim 3
Dependent Claim
16 words
The dyeable smooth-dry crosslinked cellulose of claim 1 wherein the amino acid derivative is an imidazolidinone.
Claim 4
Dependent Claim
16 words
The dyeable smooth-dry crosslinked cellulose of claim 1 wherein the amino acid derivative is a carbamate.
Claim 5
Dependent Claim
20 words
The dyeable smooth-dry crosslinked cellulose of claim 1 wherein the amino acid is crosslinked with dimethyloldihydroxyethyleneurea on said cellulose substrate.
Claim 6
Dependent Claim
28 words
The dyeable smooth dry crosslinked cellulose of claim 1 wherein the amino acid is selected from the group consisting of glycine, alanine, serine, aspartic acid and glutamic acid.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the cellulosic substrate is cotton fabric.
Claim 8
Dependent Claim
9 words
A dyed smooth dry crosslinked cellulose of claim 1.
Claim 9
Dependent Claim
9 words
A dyed smooth dry crosslinked cellulose of claim 6.
Claim 10
Dependent Claim
31 words
A process for producing a dyeable cellulose comprising affixing an amino acid derivative of an N-methylol crosslinking agent to cellulose for the purpose of imparting smooth dry and dyeability characteristics thereto.
Claim 11
Dependent Claim
31 words
A process for producing a dyeable cellulose comprising affixing an amino acid derivative of an N-methylol crosslinking agent to cellulose for the purpose of imparting smooth dry and dyeability characteristics thereto.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein the product is dyed with a basic or a direct dye.
Claim 13
Dependent Claim
11 words
The process of claim 10 wherein the cellulose is cotton fabric.
Claim 14
Dependent Claim
13 words
The process of claim 10 wherein the amino acid derivative is an imidazolidinone.
Claim 15
Dependent Claim
13 words
The process of claim 10 wherein the amino acid derivative is a carbamate.
Claim 16
Dependent Claim
13 words
The process of claim 10 wherein the amino acid is crosslinked with dimethyloldihydroxyethyleneurea.
Claim 17
Dependent Claim
13 words
The process of claim 10 wherein the amino acid is crosslinked with dimethylolpropylcarbamate.
Claim 18
Dependent Claim
24 words
The process of claim 10 wherein the amino acid is selected from the group consisting of glycine, alanine, serine, aspartic acid and glutamic acid.
References Cited (Backward Citations)
US3807946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |