Autophobic silicone copolyols in hairspray compositions
CA 1328812 C · Owner: S.C. Johnson & Son, Inc. · Inventors: Sramek, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hairspray composition in an ethanol solvent system possesses improved body as a result of the inclusion of an amount of an autophobic silicone copolyol which is effective to cause the hairspray resin composition to contract on the hair at between 20°C. and 37°C. The silicone copolyol is a polymer of organosiloxy units selected from the group consisting of dimethylsiloxy units trimethylsiloxy units, CH3SiO(CxH2x)(OCH2CH2)y- (OCHCH3CH2)zOR and (CH3)2SiO(CxH2x)(OCH2CH2)y- (OCHCH3CH2)zOR where x has a value of 1 to 12 R is hydrogen or, alkyl of 1 to 4 carbon atoms y is greater than or equal to 1, z is, greater than or equal to 0 and the sum of y + z and the amount of dimethylsiloxy units and …
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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 April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 2011.
- 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.