Vinyl carbosiloxane resins

US9556313B2 · kind B2 · utility

Assignees

• Henkel AG & Co. KGaA · DE
• HENKEL IP & HOLDING GMBH · DE

Inventors

• Shengqian Kong · Fryeburg, US
• Liwei Zhang · Qinhuangdao City, CN
• Yong Zhang · Jacksonville, US
• Wentao Xing · Shanghai, CN
• Daniel J. Duffy · Naperville, US

Key dates

• Filing date: Dec 8, 2014
• Grant date: Jan 31, 2017
• Expiry date: Dec 8, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention is a vinylcarbosiloxane resin that is the hydrosilation reaction product of 1,3,5,7 -tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane and a hydride-terminated linear polysiloxane, siloxane, or silane, having two terminal Si—H hydrogens reactive with vinyl groups in a hydrosilation reaction, in the presence of a platinum catalyst. Suitable hydride-terminated linear polysiloxanes, siloxances, and silanes include those having the structures:In another embodiment, the vinylcarbosiloxane resin can be reacted with one or more other hydrido-silanes and hydrido-polysiloxanes in the presence of a platinum catalyst to form a curable composition.