Polyether-impression material and method for its preparation and use

US5086148A · kind A · utility

Assignee

• ESPE Stiftung & Co. Produktions-und Vertriebs KG · DE

Inventors

• Peter Jochum · Meiningen, AT
• Oswald Gasser · Hanerau-Hademarschen, DE
• Wolf-Dietrich Zahler · Hechendorf, DE
• Gunther Lechner · Herrsching am Ammersee, DE
• Rainer Guggenberger · Hanerau-Hademarschen, DE
• Klaus Ellrich · Herrsching am Ammersee, DE

Key dates

• Filing date: Nov 14, 1989
• Grant date: Feb 4, 1992
• Expiry date: Nov 14, 2009

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K6/90
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A polyether-impression material comprising components PA1 (a) a polyether, which has at least two optionally substituted vinyl- and/or allyl-end groups, PA1 (b) an SiH component, PA1 (c) a platinum catalyst, and optionally PA1 (d) the usual additives PA1 characterized in that the SiH-component (b) can be obtained by the reaction of at least a bi- functional, or polyfunctional, e.g., trifunctional, allyl- or vinyl-hydrocarbon compound, the hydrocarbon radical of which, without taking account of the allyl- or vinyl-groups and the optionally present alkylene ether groups, has 6 to 30 C-atom and contains at least one aromatically unsaturated, heterocyclic, or cycloaliphatic ring, with at least one mole per vinyl- or allyl-group of at least a bifunctional, or polyfunctional, e.g., trifunctional, SiH compound of the formula: ##STR1## in which e=0 to 8, PA1 g=0 to 8, PA1 h=0 to 4 and R.sup.4 and R.sup.10 are the same or different, and are each H, methyl or ethyl, with the proviso that at least 1 and at the most 5 of R.sup.4 to R.sup.10 are H, wherein g and h cannot simultaneously be O, and wherein at least the components (b) and (c) lie spatially separated from each other.