Urethanes containing two perfluoroalkylthio groups

Details Urethanes containing two perfluoroalkylthio groups Urethanes containing two perfluoroalkylthio groups

1975-11-12

1977-10-18

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560158, 560164, 560165, 560162, 560115, 260268R, 260468E, 260482B, 560163, 560 26, 427390E, 428424, 428425, C07C12506

Patent

active

040545920

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: 2911390 (1959-11-01), Smith
patent: 3413271 (1968-11-01), Weesner
patent: 3547894 (1970-12-01), Smeltz
patent: 3629312 (1971-12-01), Emerson et al.
patent: 3759874 (1973-09-01), Gresham
patent: 3906049 (1975-09-01), Hager et al.
patent: 3937738 (1976-02-01), Throckmorton

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