Soft silicone elastomers
CA 1296830 C · Owner: Ge Bayer Silicones Gmbh & Co. Kg · Inventors: Wrobel, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A curable mixture for preparing soft silicone elastomers having low exudation properties comprises: a) 100 parts by weight of a vinyl-containing base polymer of the formula, in which, R and R' are alkyl having 1 to 8 carbon atoms aryl, having 3 to 8 carbon atoms, vinyl having 3 to 8 carbon atoms, and fluoroalkyl having 3 to 8 carbon atoms with, the proviso that said base polymer contains a statistical average of 0.5 to 1.8 vinyl groups per molecule and, x is a sufficiently large number that the viscosity of the polymer is between 0.1 and 300,000 Pascal-seconds at 20°C, b) 0.1 to 50 parts by weight of an organohydrogensiloxane of the formula, Le A 24 634-US, …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.