Detergent compositions
CA 1188189 A · Owner: Unilever Plc · Inventors: Billington, Reginald; Hampson, Jeffrey D.; Cox, Ian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detergent composition with especially good foaming properties includes a di(C7-C9) alkyl sulphosuccinate preferably a di(C8 alkyl) sulphosuccinate and an, unsymmetrical dialkyl sulphosuccinate in which one alkyl group is C7-C9 and the other is C3-C6, preferably a (C6 alkyl) (C8 alkyl) sulphosuccinate. A di(C3-C6) alkyl sulphosuccinate may advantageously be present. An especially preferred mixture comprises di(n-octyl) (n-octyl n-hexyl) and di(n-hexyl) sulphosuccinates and, this mixture may be prepared by esterifying maleic anhydride or the like with a mixture of n-octanol and n-butanol, followed by bisulphite addition. The detergent composition is preferably in liquid form and is suitable …
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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 June 4, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2002.
- 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.