Patent · US Expired

Epihalohydrin-based resins having a reduced halogen content

US6376578B1 · kind B1 · utility

13Cited by

13References

27Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Marek Gorzynski · Düren, DE
Andreas Pingel · Düren, DE

Key dates

Filing date	Nov 6, 1995
Grant date	Apr 23, 2002
Priority date	—
Expiry date	Nov 6, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/0286
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention comprises an aqueous solution comprising a water-soluble, polyamidoamine- epichlorohydrin resin, said solution having a reduced halogen content and effective wet strength agent properties, obtained by subjecting an aqueous solution comprising a water-soluble polyamido-amine-epichlorohydrin resin to an organic halogen content reducing after-treatment wherein the total halogen content is below 1% by weight, calculated on solid resin and the halogen content is below 0.1% by weight.

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