Emulsion compositions comprising a siloxane- oxyalkylene copolymer and an organic surfactant
CA 1093234 A · Owner: Dow Corning Corporation · Inventors: Keil, Joseph W.; Gee, Ronald P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable emulsions of a polar liquid in a non-polar base liquid are prepared with the cooperating action of a mixture of a water-in-oil surfactant having an HLB value of from 2 to 10 and certain polydiorganosiloxaneanti-perspirant composition comprising an aqueous solution of aluminum chlorhydrate as the polar liquid dispersed in using a mixture of nonlphenoxy polyethoxyethanol and a copolymer of a trimethylsiloxane-endblocked polydimethylsiloxane containing a minor amount of methlhdrogensiloxane units and an allyloxy-endblocked polyoxyethylenepolyoxypropylene copolymer.
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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- 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.