Patent ID: 6579966
Filing Date: 2003-06-17
Classification: C08G,C08J,C08L,C09D,Y10T

Abstract:
A polyester copolymer, comprising:a polyester containing at least one polyoxetane therein, said polyoxetane having a preformed ester linkage which is connected to said polyester, wherein said preformed polyoxetane ester linkage is derived from the reaction of a hydrdxyl group of said polyoxetane with a polycarboxylic acid or anhydride thereof; said polyoxetane having repeat groups of the formula with each n being, independently, 1 to about 5, and each Rf being, independently, a linear or branched alkyl group of from 1 to about 20 carbon atoms with a minimum of 50% of the hydrogen atoms of said alkyl group being replaced by F, and optionally up to all of the remaining H atoms being replaced by I, Cl, or Br, or each said Rf group, independently, being an oxyperfluorinated polyether having from 4 to 60 carbon atoms.