Stable biodegradable fabric softening compositions containing 2-hydroxypropyl monoester quaternized ammonium salts
CA 1316641 C · Owner: The Procter & Gamble Company · Inventors: Walley, Darlene R.; Hardy, Frederick E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Shelf-stable biodegradable fabric softening compositions are provided comprising mixtures of a quaternized ester-ammonium softening compound having the formula, and mixtures thereof wherein each R substituent is, independently selected from C1-C6 alkyl alkenyl or hydroxyalkyl, groups, R1 is a C14-C22 hydrocarbyl group R2 is a C13-C21, hydrocarbyl group, and A is a softener compatible anion; and a liquid carrier. These biodegradable compositions have improved product stability and dispersability, as well as excellent fabric softening characteristics. BSH/jp(BAP4:3792a)
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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 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.