Patent · US Expired

Process for the photopolymerization of acrylic acid ester-containing compositions

US4116788A · kind A · utility

19Cited by

3References

10Claims

0Family size

Assignee

ESPE Fabrik Pharmazeutischer Praparate GmbH · DE

Inventors

Werner Schmitt · Starnberg, DE
Robert Purrmann · Starnberg, DE
Peter Jochum · Meiningen, AT

Key dates

Filing date	Nov 19, 1976
Grant date	Sep 26, 1978
Priority date	—
Expiry date	Nov 19, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/524
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An improved process for the photopolymerization of compositions including photopolymerizable acrylic or methacrylic acid esters and an initiator (e.g., a benzoin compound) is disclosed. The addition of 0.1 to 20 weight percent (based on the amount of polymerizable material) of an organic phosphite substantially reduces the polymerization time of the resulting composition.

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