Patent · US Expired

Esters of phosphorous acid

US4323501A · kind A · utility

4Cited by

2References

14Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Erich Eimers · Krefeld, DE
Dieter Margotte
Helmut Schmid · Freudenstadt, DE
Rolf Dhein · Krefeld, DE

Key dates

Filing date	Oct 18, 1977
Grant date	Apr 6, 1982
Priority date	—
Expiry date	Oct 18, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L69/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Phosphites of the general formula: ##STR1## in which n.sub.1 is an integer; PA1 n.sub.2 is 0 or an integer; PA1 n.sub.3 is an integer; PA1 at least one of the groups R is an oxetane group as hereinafter defined or a hydrocarbon radical being substituted at least by one oxetane group as hereinafter defined; PA1 the remaining groups R are selected from alkyl, aralkyl, cycloalkyl, aryl and hetaryl groups; and PA1 the group or groups Ar are the same or different at-least-divalent aromatic groups the free valencies of which are directly linked to the aromatic nuclei; and PA1 a process for their preparation.

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