Patent · US Expired

Vinylsilicone pastes for dental impression

US4359565A · kind A · utility

16Cited by

3References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Lothar Puppe · Burscheid, DE
Reiner Voigt · Leverkusen, DE
Manfred Borgardt · Wuppertal, DE
Hans-Heinrich Moretto · Cologne, DE
Bernard Munchenbach · Leverkusen, DE

Key dates

Filing date	Jul 29, 1981
Grant date	Nov 16, 1982
Priority date	—
Expiry date	Jul 29, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/44382
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

In a polysiloxane-based dental composition which crosslinks by an addition reaction and hardens at room temperature, the composition comprising PA0 (a) an organopolysiloxane with at least two vinyl groups in the molecule, PA0 (b) an organohydridopolysiloxane, PA0 (c) a catalyst to accelerate the addition reaction, and PA0 (d) a hydrophobic filler, the improvement which comprises including therein PA0 (e) an aluminosilicate containing finely divided palladium. This removes any by-product hydrogen and results in a smoother surface on any plaster of Paris moldings made from the hardened composition.

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