Patent · US Expired

Process for stabilizing (METH)acrylic acid esters against unwanted radical polymerization

US6518452B1 · kind B1 · utility

9Cited by

8References

5Claims

0Family size

Assignee

BASF SE

Inventors

Heinrich Aichinger · Mannheim, DE
Holger Herbst · Bischofswerda, DE
Gerhard Nestler · Ludwigshafen, DE

Key dates

Filing date	Feb 7, 2000
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Feb 7, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K15/18
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method is described of stabilizing (meth)acrylic esters against unwanted free-radical polymerization, in which the mixture to be stabilized has added to it a polymerization inhibitor mixture comprising at least one nitroxyl radical and/or at least one organic compound having at least one nitroso group, and at least one p-phenylenediamine.

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