Patent · US Expired

Organic phosphorus compounds with 2-hydroxyalkyl-phosphonic acid groups

US4220610A · kind A · utility

3Cited by

5References

3Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Walter Dursch · Königstein, DE
Fritz Linke · Königstein, DE

Key dates

Filing date	Feb 9, 1979
Grant date	Sep 2, 1980
Priority date	—
Expiry date	Feb 9, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G79/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Organic phosphorus compounds with 2-hydroxyalkylphosphonic acid groups of the general formula I ##STR1## the individual symbols in the above formula I having the meaning as given in the description. The compounds, which are used as flame retardants for textile material, are prepared by reacting 1 mole of a compound of the general formula II EQU Z.sub.n (OH).sub.n (II) with 1 to n.25 moles of 2-oxo-1,3,2-dioxa-phospholanes of the general formula III ##STR2##

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