Aqueous binder saturants used in a process for making nonwoven filters
US5244695A · kind A · utility
21Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2861
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for making a nonwoven filter which comprises impregnating a nonwoven filter substrate with a curable binder composition, the binder composition consisting essentially of PA0 (a) 10 to 100 wt% fully hydrolyzed PVOH which has a DPn of 100 to 2300; and PA0 (b) 0 to 90 wt% aqueous polymer emulsion, on a solids basis. The preferred aqueous polymer emulsion is an ethylene-vinyl chloride (EVCl) copolymer emulsion or a vinyl acetate/-N-methylolacrylamide (VAc/NMA) copolymer emulsion, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.