Solubilization of dimethyl polysiloxanes
CA 1323947 C · Owner: Burke, John Jerome · Inventors: Roelofs, Robert Ross; Burke, John Jerome
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The instant invention relates to liquid compositions useful in cosmetic applications comprising a polysiloxane selected from the group consisting of cyclic and non-cyclic dimethyl polysiloxanes and mixtures thereof at least one nonionic polyoxyalkylene block copolymer and, water. This polyoxyalkylene copolymer is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure the residue of an active hydrogencontaining compound having from 2 to 4 carbon atoms 2 to 4, active hydrogen atoms at least one hydrophobic oxyalkylene chain in which the oxygen-carbon atom ratio does not exceed 0.4 and at least one hydrophilic oxyalkylene chain in …
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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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
- 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.