Patent · US Expired

Modified fillers for silicone dental pastes

US4609687A · kind A · utility

14Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Peter Schwabe · Leverkusen, DE
Reiner Voigt · Leverkusen, DE

Key dates

Filing date	Feb 14, 1985
Grant date	Sep 2, 1986
Priority date	—
Expiry date	Feb 14, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K9/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

In the making of a shaped structure by mixing PA0 (a) a cross-linkable organopolysiloxane, PA0 (b) hydrophobic filler particles, PA0 (c) paraffin oil, PA0 (d) a colorant, and PA0 (e) a cross-linking catalyst, the improvement which comprises employing as (b) hydrophobic filler particles of which the surface has been laden with 0.5-5% by weight of paraffin oil. The filler can be present in either or both of a cross-linkable silicone component and a catalyst component; each component can contain other ingredients but will not cure until the two components are brought together. Truer dental impressions are thereby formed.

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