Biodegradable cationic surface-active agents
CA 1111060 A · Owner: The Procter & Gamble Company · Inventors: Letton, James C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel, biodegradable cationic surface-active agents are disclosed. These compounds, when used in laundry detergent compositions together with selected nonionic surfactants, provide excellent removal of particulate and greasy/oily soils, as well as providing fabric softening, static control, and dye transfer inhibition benefits to the laundered fabrics. The novel biodegradable cationic surface active agents have the formula wherein each R1 is C1 to C4 alkyl or hydroxyalkyl; each R2 is either hydrogen or C1 to C3 alkyl; R3 is C4 to C30 straight or branched chain alkyl or alkenyl: R4 is C1 to C10 alkylene or alkenylene; n is from 2 to 4; y is from 1 to 20; a is 0 or 1, and t is 0 or 1 but t …
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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 October 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.