FOAM CONTROL AGENT

摘要

Block copolymers having two blocks and having the general formula (III) : R13[(OR14)j (OR 16)l OR 17]m wherein R13 is the residue of an organic initiator; R14 is one or more C2-C4 alkylene groups; R16is one or more C2-C4 alkylene groups; provided that R14 and R16 must be different from each other ; R17 is a C1-C10 alkyl group; j is an integer of 5 to 80; l is an integer of l to 80; and m is an integer of 1 to 6; may be used as foam control agents, especially in the paper/pulp industries or in industrial detergents.