Patent · US Expired

Two-stage photocuring process for a dental composition

US5472991A · kind A · utility

73Cited by

8References

13Claims

0Family size

Assignee

501 Espe Stiftung & Co. Produktions-Und · DE

Inventors

Werner Schmitt · Starnberg, DE
Peter Jochum · Meiningen, AT
Klaus Ellrich · Herrsching am Ammersee, DE

Key dates

Filing date	Jul 21, 1994
Grant date	Dec 5, 1995
Priority date	—
Expiry date	Jul 21, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S522/913
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to photopolymerizable dental compositions of ethylenically unsaturated monomers and/or polymers thereof which are curable in two curing steps. Besides being comprised of fillers, said compositions also contain a photoinitiator component I having a light absorption maximum of <450 nm and a molar extinction of the light absorption of <10 at wavelengths of 470 nm or higher, and a photoinitiator component II having a molar extinction of the light absorption of >20 at least at one wavelength of at least >450 nm.

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