Fluorinated polyisocyanates

US5605956A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Douglas Robert Anton · Wilmington, US
• Michael J. Darmon · Chester, US
• William F. Graham · Wilmington, US
• Richard R. Thomas · Wilmington, US

Key dates

• Filing date: Oct 16, 1995
• Grant date: Feb 25, 1997
• Expiry date: Oct 16, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/007
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A fluorinated polyisocyanate which comprises an organic polyisocyanate reacted with a fluorinated monofunctional alcohol represented by the formula ##STR1## where R.sub.f is a fluoroalkyl containing group having at least 4 carbon atoms, X is a divalent radical, R.sup.3 is H or an alkyl group having 1-4 carbon atoms, n is 0-1 and m is 0-30, provided that when n is 0 then m must be equal to or greater than 1 and when m is 0, n is 1, wherein about 0.1-33 mole percent of active isocyanate groups are reacted with the fluorinated monofunctional alcohol; the fluorinated polyisocynate can be used with acrylic polymers, polyesters, alkyd resins, polyols and the like to form coating compositions, sealants, adhesives and the like.