Soil release detergent composition
CA 1248427 A · Owner: Colgate-Palmolive · Inventors: Ciallella, Loretta K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyethylene terephthalate - polyoxyethylene terephthalate soil release promoting polymers which have, been found to be subject to losses of soil release promoting properties on storage in contact with alkaline materials such as builder salts for synthetic organic detergents are, stabilized by melting them together with a water soluble polyacrylate and subsequently converting the melt to solid particles which contain the PET - POET polymer and polyacrylate in intimate contact. The stabilized PET - POET polymer may then be added to a synthetic organic detergent composition, very preferably one based on nonionic detergent the builder(s) for which may be polyphosphate non-phosphate, or a …
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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 January 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2006.
- 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.