Reduced formaldehyde nonwoven binders which contain polymerized units of N-methylolacrylamide
US6787594B1 · kind B1 · utility
5Cited by
10References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | May 15, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention is the use of a glycolic acid adduct of sodium sulfite as the reducing agent in the redox couple for polymerization of vinyl acetate polymer based emulsions for nonwoven binders which contain formaldehyde, primarily from the self-crosslinking co-monomer N-methylolacrylamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.