AMPHIPHILIC PERFLUOROALKYL MODIFIED POLYDIENES AND THEIR USE IN THE TREATMENT OF LEATHER

摘要

The present invention provides a fluorochemical composition for the treatment of leather, comprising (a) a reaction product of (i) a polydiene grafted with an ethylenically unsaturated dicarboxylic acid anhydride and (ii) a fluorochemical compound selected from the group consisting of a fluorinated alcohol, a fluorinated thiol and a fluorinated amine or (iii) a mixture of said fluorochemical compound and a compound of the formula R-X wherein R is an aliphatic group containing at least 4 carbon atoms and X is hydroxy, SH or a primary or secondary amino group or (b) a salt of said reaction product. The fluorochemical composition is capable of providing water repellency properties as well as water proofness to a leather substrate. Accordingly, there is also provided a method of treating leather by contacting leather with the fluorochemical composition and the use of fluorochemical composition to provide water proofness and/or water repellency to leather.