US4652268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low formaldehyde release reactant
Assignee: FREEDOM TEXTILE CHEMICALS Co
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Filing: 1986-01-21
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Granted: 1987-03-24
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Expires: 2006-01-21
Abstract
Abstract Textile treating agent for imparting crease resistance is made by mixing 1 mol glyoxal, 2 mols formaldehyde, 1 mol urea and 1.5 mol ethylene glycol and reacting the mixture first at pH 6 to 7 at 60 DEG C. and then at pH 3 at 60 DEG . The product is found to have more stable formaldehyde release properties in textile treating baths as pH of the bath is varied in the range from about 3.0 to about 4.5.
Inventors
- 👤 Kenneth H. Remley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:11
CPC Classifications
D; D06; D06M; D06M11/00; C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A method of textile finishing to improve wrinkle resistance of the fabric which comprises applying to a cotton or cotton blend fabric an aqueous solution of a textile finishing agent made by mixing glyoxal, formaldehyde, urea and a glycol and reacting the mixture at pH in the range from 6 to 7 for time sufficient to complete the reaction and then changing the pH of the product mixture and further reacting at pH in the range from about 3.5 to about 1.0 for time to complete the reaction and then adjusting the pH of the product mixture to pH in the range from pH 4.5 to 5.5, and further comprising a catalyst for the cross-linking reaction of the product with textile fabric, drying the treated fabric and heating the treated fabric to a temperature sufficient to cause the cross-linking reaction of the defined product with the fabric.
Claim 2
Independent Claim
147 words
A method of textile finishing to improve wrinkle resistance of the fabric which comprises applying to a cotton or cotton blend fabric an aqueous solution of a textile finishing agent made by mixing glyoxal, formaldehyde, urea and a glycol and reacting the mixture at pH in the range from 6 to 7 for time sufficient to complete the reaction and then changing the pH of the product mixture and further reacting at pH in the range from about 3.5 to about 1.0 for time to complete the reaction and then adjusting the pH of the product mixture to pH in the range from pH 4.5 to 5.5, and further comprising a catalyst for the cross-linking reaction of the product with textile fabric, drying the treated fabric and heating the treated fabric to a temperature sufficient to cause the cross-linking reaction of the defined product with the fabric.
References Cited (Backward Citations)
US4345063A
Cited
US4455416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |