Patent Number: 8,791,212

Title: Fluorinated block copolyesters

Abstract: Disclosed are block copolyesters comprising blocks of fluoroether functionalized aromatic polyester and blocks of unmodified aromatic polyester, the block copolyesters having a blockiness index, B, in the range of 0.25 to 1.0. The block copolymers incorporated into blends with unmodified aromatic polyester impart oil and soil resistance to shaped articles prepared from the blends.

Inventors: Drysdale; Neville Everton (Newark, DE), McCord; Elizabeth Forrester (Hockessin, DE), Nederberg; Fredrik (Greenville, DE)

Assignee: E I du Pont de Nemours and Company

International Classification: C08G 63/00 (20060101)

Expiration Date: 7/29/12018