Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1977-05-19
1978-06-27
McCamish, Marion E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428264, 428265, 428272, 428274, 428422, C07C12506
Patent
active
040976424
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 repellance to textiles and as additives to plastics to provide mold-release and other desirable properties.
REFERENCES:
patent: 4054592 (1977-10-01), Dear et al.
Dear Robert Ernest Arthur
Falk Robert Allan
Almaula Przbudh I.
Ciba-Geigy Corporation
Glynn Michael W.
McC. Roberts Edward
McCamish Marion E.
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