Siloxane compounds containing composition, method of production and use thereof

US8980973B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Peter U. Osswald · Bohmte, DE
• Hyung-Min Shim · Seojong-myeon, KR
• Johann Fetz · Windach, DE
• Joachim W. Zech · Kaufering, DE
• Bernd Kuppermann · Herrsching am Ammersee, DE

Key dates

• Filing date: Jun 5, 2012
• Grant date: Mar 17, 2015
• Expiry date: Jun 5, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a composition for taking dental impressions, the composition comprising a siloxane component (A) comprising terminal vinyl groups, a siloxane component (B) comprising Si—H groups, a catalyst (C) being able to catalyze a curing reaction between components (A) and (B) and a silicone oil (D), wherein the silicone oil has a viscosity at 23 DEG C of at least about 600,000 mPa*s and is present in an amount from about 1 to about 20 wt.% with respect to the weight of the whole composition. The invention also relates to a method of producing such a composition and a method for adjusting the Shore hardness A of a composition.