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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4054592 B1

PDFFull Text
Date of Patent:
Oct. 18, 1977

Filed:

Nov. 12, 1975

Urethanes containing two perfluoroalkylthio groups

Applicant:
Inventors:

Robert Ernest Dear, Mount Kisco, NY (US);

Robert Allan Falk, New City, NY (US);

Assignee:

Ciba-Geigy Corporation, Ardsley, NY (US);

Attorneys:

Jorda; Karl F.

Roberts; Edward McC.

Almaula; Prabodh I.

Primary Examiner:

Richard L Raymond

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 25 ; 560158 ; 560164 ; 560165 ; 560162 ; 560115 ; 2602 / ; 2604 / ; 2604 / ; 560163 ; 560 26 ; 4273 / ; 428424 ; 428425 ;
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.

Find Patent Forward Citations

Dear, Robert. (1977). Urethanes containing two perfluoroalkylthio groups (U.S. Patent No. 4054592). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4054592

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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