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Expired Canadian patentCanada

Acetylated sugar ethers as bleach activators, detergency boosters and fabric softeners

CA 1323822 C · Owner: Colgate-Palmolive · Inventors: Broze, Guy; Lysy, Regis

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Abstract From the Canadian patent

A heavy duty detergent composition having incorporated therein an acetylated sugar ether which provides bleach activation, detergency boosting and fabric softening properties to the detergent composition. The acetylated sugar ether contains at least two long chain alkyl groups. The acetylated sugar ether acts as a bleach activator by reacting with a bleaching agent, such as sodium perborate monohydrate to, generate peracetic acid. Following perhydrolysis the compound, acts as a detergency booster. The presence of a least two long chain alkyl groups induces absorption onto the fibers and a softening effect is obtained.

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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.
FiledJanuary 20, 1989
GrantedNovember 2, 1993
Term endedNovember 2, 2010
Patent numberCA 1323822 C
Classification (IPC)C11D3/39 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJan 20, 1989Patent grantedNov 2, 1993Term endedNov 2, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.