US4585827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low formaldehyde release reactant
Assignee: FREEDOM TEXTILE CHEMICALS Co
•
Filing: 1984-07-13
•
Granted: 1986-04-29
•
Expires: 2004-07-13
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° C. and then at pH 3 at 60°. 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: 4
Claim 1
Independent Claim
115 words
An improved method for making textile finishing agent comprising the steps of mixing glyoxal, formaldehyde, urea and a glycol and reacting the mixture at temperature in the range from about 40° C. to about 80° C. and 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 temperature in the range from about 40° C. to about 80° C. and at pH in the range from 3.5 to about 1.0 for time sufficient 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.
Claim 2
Dependent Claim
115 words
An improved method for making textile finishing agent comprising the steps of mixing glyoxal, formaldehyde, urea and a glycol and reacting the mixture at temperature in the range from about 40° C. to about 80° C. and 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 temperature in the range from about 40° C. to about 80° C. and at pH in the range from 3.5 to about 1.0 for time sufficient 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.
Claim 3
Dependent Claim
15 words
A textile finishing agent comprising a product made by the process described in claim 1.
Claim 4
Dependent Claim
29 words
An aqueous solution of a textile finishing agent defined by claim 2 further comprising a catalyst in said solution for the cross-linking reaction of the product with textile fabric.
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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |