Patent · US Expired

Water-soluble, crosslinked nitrogenous condensation products produced by reaction of chlorohydrin-ethers with ethyleneimine

US4128511A · kind A · utility

4Cited by

2References

3Claims

0Family size

Assignee

BASF SE

Inventors

Werner Streit · Worms, DE
Rolf Fikentscher · Ludwigshafen, DE
Karl Gans · Ludwigshafen, DE
Gerhard Welzel · Mannheim, DE

Key dates

Filing date	Aug 3, 1977
Grant date	Dec 5, 1978
Priority date	—
Expiry date	Aug 3, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D1/60
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Water-soluble, crosslinked nitrogen-containing condensation products, the viscosity of which, in aqueous solution, increases with increasing temperature, are obtained by reacting a chlorohydrin-ether of the formula ##STR1## where x is from 50 to 250, y is from 20 to 100, the ratio x:y is from 6.1:1 to 1:15 and n is from 0.5 to 5, with ethyleneimine in the weight ratio of from 1:10.1 to 1:0.8; the condensation products are added to aqueous systems, e.g. polymer solutions and polymer dispersions, to improve the viscosity characteristics.

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