Binder composition and nonwoven fabrics and impregnated papers using the same
US4847143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1986 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/652
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A binder composition is disclosed, which comprises: PA0 (A) a copolymer emulsion which contains as its essential ingredients vinyl acetate, ethylene, and a monomer represented by the formula (1): ##STR1## wherein R.sub.1 is H or CH.sub.3 ; and R.sub.2 is H or an alkyl group having not more than 5 carbon atoms, the proportions of the respective ingredients being within the range of 55-96.5/3-40/0.5-5 on a weight basis; PA0 (B) a formaldehyde-free nitrogen-containing glyoxal resin; PA0 (C) a metal salt catalyst; and optionally PA0 (D) a higher alcohol sulfuric acid ester-based surfactant. Nonwoven fabrics and impregnated papers using the binder composition are also disclosed. The binder composition exhibits not only high resistance to water and solvents but also low residual free formaldehyde level, with an improvement in foamability being optionally attainable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.