Sterically hindered polyether polyols as chlorine bleach stable surfactants
CA 1317525 C · Owner: Otten, Jay G. · Inventors: Parker, Edward J.; Greenough, Ronald E.; Otten, Jay G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Cleaning compositions especially liquid detergent, compositions containing chlorine bleach are disclosed. The, compositions include a chlorine bleach stable nonionic surfactant which is a mixture of the formula YA1O)n(A2O)n'(A3O)n"Hm, wherein Al and A2 are C2-C4 alkylene groups tetramethylene, and mixtures thereof, A3 is a sterically hindered C4-C30 alkylene group, C4-C30 arylalkylene group and mixtures, thereof, n + n' = a value such that the total molecular weight of the uncapped portion of the molecule is about 500 to 25,000, n" is a number from 1 to 8, m is a number from 1 to 8, and Y is the residue of an organic compound having from about 1 to 30 carbon …
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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 May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 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.
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.