Patent · US Expired

Sizing agents

US4568391A · kind A · utility

2Cited by

4References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wulf von Bonin · Leverkusen, DE
Hans-Ulrich Buschhaus · Krefeld, DE
Ulrich Beck · Bornheim, DE
Heinz Baumgen · Leverkusen, DE

Key dates

Filing date	Dec 29, 1983
Grant date	Feb 4, 1986
Priority date	—
Expiry date	Dec 29, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C68/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention provides new sizing agents, in particular for paper, which contain chloroformic acid esters of ester alcohols and/or carboxamide alcohols. The chloroformic acid esters in question preferably have the following idealized structure: EQU (RCOX).sub.n R'(OCOCL).sub.m (I) wherein PA1 X=an oxygen atom or an NH radical, PA1 R=an aliphatic, araliphatic or cycloaliphatic hydrocarbon radical having 8 to 28 carbon atoms, PA1 R'=the radical of an (n+m)-functional alcohol or amino alcohol having 2 to 10 carbon atoms, where the functionality refers to the total number of OH and NH.sub.2 groups, PA1 n=an integer from 1 to 4, and PA1 m=an integer from 1 to 3.

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