Patent · US Expired

Azo-di-isobutyric acid-(N,N-hydroxyalkyl)-amidines

US4256636A · kind A · utility

8Cited by

1References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ernst Roos
Herbert Bartl · Odenthal, DE
Klaus Schuster · Leverkusen, DE
Adolf Schmidt · Adelsheim, DE

Key dates

Filing date	Sep 17, 1979
Grant date	Mar 17, 1981
Priority date	—
Expiry date	Sep 17, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

An azo di-isobutyric acid-(N,N'-hydroxyalkyl)-amidine corresponding to the formula (I): ##STR1## in which R and R', which may be the same or different, represent linear or branched alkylene radicals containing from 2 to 4 carbon atoms, and PA1 X represents R'-OH or H. They may be produced by reacting an azo-di-isobutyric acid iminoalkyl ether containing from 1 to 4 carbon atoms in the alkyl group with at least one mono-alkanolamine containing from 2 to 4 carbon atoms or with a mixture of at least one monoalkanolamine and at least one dialkanolamine each containing from 2 to 4 carbon atoms in an alkanol radical, the molar ratio of monoalkanolamines to dialkanolamines in the mixture amounting to substantially 1:1, in substantially equivalent quantitative ratios at a temperature in the range of from 0.degree. to 50.degree. C. The amidines may be used as polymerization initiators, as cross-linking agents and as blowing agents in the production of foams.

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