Patent · US Expired

Self-crosslinking vinyl ester dispersions having a reduced formaldehyde content or containing no formaldehyde for strengthening textile fiber structures

US4959249A · kind A · utility

6Cited by

3References

4Claims

0Family size

Inventors

Bernd Schilling · Waldshut-Tiengen, DE
Gerhard Brink · Münchberg, DE
Ingo Harder · Schweich, DE
Hubert Wiest · Burghausen, DE

Key dates

Filing date	Oct 18, 1989
Grant date	Sep 25, 1990
Priority date	—
Expiry date	Oct 18, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2566
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Binders for strengthening textile fiber structures and based on aqueous, self-crosslinking vinyl ester dispersions having a reduced formaldehyde content or containing no formaldehyde. The low content of free formaldehyde in the dispersion is achieved by partial or complete substitution of the crosslinking comonomers containing N-methylol groups by vinylalkoxysilanes as crosslinking agents. Non-woven treated with these formaldehyde-free or low formaldehyde binder systems are distinguished by high strength values and excellent solvent resistance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.