Heteroatom containing perfluoroalkyl terminated neopentyl glycols and polymers therefrom
CA 1338174 C · Owner: Ciba-Geigy Ag · Inventors: Karydas, Anthanasios; Jacobson, Michael; Falk, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Heteroatom containing perfluoroalkyl terminated neopentyl glycols of the formulas HOCH2C(CH2X-E-Rf)2CH2O1-3-H or HO-CH2C(CH2X-Rf)2CH2O1-3-H are prepared from halogenated neopentyl glycols or oxetanes and thiols of the formula Rf-E-SH amines of the formula Rf-E-NH-R, alcohols of the formula Rf-E-OH or perfluoro-amides, wherein Rf is a straight or branched chain perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms. The polymeric reaction products of said fluorinated diols and, optionally other diols with isocyanates to prepare polyurethanes; with amines and isocyanates to prepare polyureas/polyurethanes; with acids or derivatives …
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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 March 19, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.