Block Copolymers As Soil Release Agents In Laundry Processes

摘要

Described are block copolymers which have been prepared by controlled free radical polymerization. Also described is the use of said block copolymers as soil release agents in laundry processes and a process to produce said block copolymers. Further described is a method for easier releasing soil from textiles in laundry processes and a detergent containing said block copolymers.

主权项

1. A block copolymer obtained by a process comprising the steps of:
a) polymerizing a C1-C10 alkyl ester of acrylic or methacrylic acid with controlled free radical polymerization; b) polymerizing the polymer of step a) with controlled free radical polymerization with
(i) one or more monomers according to the following formula (I): wherein R1 is hydrogen or C1-10 alkyl, R2 is C1-20 alkylene, and R3 and R4 are independently linear or branched C1-C22 alkyl; or(ii) one or more monomers according to the following formula (II): wherein R1 is hydrogen or C1-10 alkyl, R2 is C1-20 alkylene, and R3 and R4 are independently linear or branched C1-C22 alkyl; or(iii) a mixture of monomers according to formula (I) and (II); and(iv) optionally, with styrene or 4-Vinylpyridine, to form a block copolymer; c) modifying the block copolymer of step b) in a polymer analogous transesterification reaction with a primary or secondary alcohol; and d) optionally, quaternizing of the block copolymer of step c).