Stabilization of polyethylene terephthalate- polyoxyethylene terephthalate soil release promoting polymers
CA 1264883 C · Owner: Ciallella, Loretta Kathleen · Inventors: Ciallella, Loretta Kathleen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
62301-1331, STABILIZATION OF POLYETHYLENE TEREPHTHALATE - POLYOXYETHYLENE TEREPHTHALATE SOIL RELEASE PROMOTING POLYMERS ABSTRACT OF THE DISCLOSURE:, Polyethylene terephthalate - polyoxyethylene terephthalate soil release promoting polymers which have been found, to be subject to loss of soil release promoting properties on storage in contact with alkaline material such as builder, salts for synthetic organic detergents are stabilized by melt-, ing 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. Preferably the melt is at a temperature above 70°C. such as within …
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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 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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
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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.