Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-02-04
1976-01-27
Gotts, Lewis
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260584B, 260470, 260 775, 260481R, C07C14916
Patent
active
039352773
ABSTRACT:
Perfluoroalkylthio glycols and esters thereof can be prepared by the free-radical catalyzed addition of a perfluoroalkylthiol to an acetylenic alcohol or ester thereof. The compounds obtained are useful intermediates for the synthesis of fluorochemicals with low free surface energies having oil and water repellent properties. In one embodiment, a perfluoroalkylthio glycol can be reacted with a diisocyanate to obtain a polyurethane containing perfluoroalkylthio groups, which polyurethanes are useful as coatings to provide oil and water repellence to textiles and as additives to plastics to provide mold-release and other desirable properties.
REFERENCES:
patent: 2857421 (1958-10-01), Matuszak et al.
patent: 3766275 (1973-10-01), Ciaudelli
patent: 3816277 (1974-06-01), Haszeldine et al.
Dear Robert Ernest Arthur
Falk Robert Allan
Almaula Prabodh I.
Ciba-Geigy Corporation
Gotts Lewis
Kolodny Joseph G.
McC. Roberts Edward
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