Phosphate-containing binders for nonwoven goods
US8273414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jul 9, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of improving the wet tensile strength of a cellulose-containing web includes applying to the web an aqueous binder emulsion and subsequently drying and curing the binder emulsion. The aqueous binder emulsion is prepared by emulsion-polymerizing a monomer mixture comprising vinyl acetate, ethylene, and an olefinically unsaturated crosslinking monomer in the presence of a phosphate ester surfactant wherein the at least one crosslinking monomer comprises a (meth)acrylamide moiety and a cellulose-reactive moiety. The binder emulsion may be applied to a cellulose-containing web to increase wet strength, aid in creping, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.