New R.sub.f -glycols containing two perfluoroalkylthio groups an

Details New R.sub.f -glycols containing two perfluoroalkylthio groups an New R.sub.f -glycols containing two perfluoroalkylthio groups an

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.

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