Patent · US Expired

Aqueous pigment slurries and their use in the production of filler-containing paper

US5695610A · kind A · utility

1Cited by

8References

4Claims

0Family size

Assignee

BASF SE

Inventors

Werner Auhorn · Bischofswerda, DE
Friedrich Linhart · Heidelberg, DE
Dietmar Monch · Weinheim, DE
Jürgen Weiser · Schriesheim, DE
Primoz Lorencak · Ludwigshafen, DE

Key dates

Filing date	Mar 15, 1996
Grant date	Dec 9, 1997
Priority date	—
Expiry date	Mar 15, 2016

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/56
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Aqueous pigment slurries which contain up to 80% by weight of a finely divided pigment in dispersed form and from 0.1 to 5% by weight of a water-soluble reaction product of PA1 (a) a polyamidoamine grafted with ethyleneimine and PA1 (b) a bifunctional or polyfunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional group, the reaction product, in 25% strength by weight aqueous solution at 20.degree. C., having a viscosity of at least 100 mPa.s, are used as an additive to the paper stock in the production of filler-containing paper.

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