Nonwoven binder emulsions of vinyl acetate/ethylene copolymers having improved solvent resistance
US4698384A · kind A · utility
11Cited by
22References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1986 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Feb 19, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F218/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer emulsion for bonding nonwoven products comprising an aqueous medium having colloidally dispersed therein a copolymer consisting essentially of vinyl acetate, 5-35 wt % ethylene and 2 to 10 wt % of an amide functional crosslinking comonomer which is N-methylolacrylamide or a compound of the formula R--NH--(CH.sub.2).sub.n --CH(OR').sub.2 where R is (meth)acryloyl, R' is a C.sub.1 -C.sub.4 alkyl group and n is 3 or 4, the copolymer emulsion prepared in the presence of 0.1 to 1 wt % polyvinyl pyrrolidone, based on vinyl acetate in the copolymer. Such emulsion binder copolymers demonstrate improved solvent resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.