| abstract |
The present invention relates to B-((X) x- (CH 2 ) a -A) n (VI), (A- (CH 2 ) a- (X) x -B- (X) x- (CH 2 ) a -A) n (IV), (A- (CH 2 ) a- (X) x -B) n (V), and (B) n- (X) x- (CH 2 ) a -A (VII Wherein A is a perfluoropolyether; a is a positive integer; X is a covalent bond or linking group; x is a positive integer; B is a polyalkylene oxide unit; n is a positive integer greater than 1, and in a compound containing a plurality of A, B, X, a and x, each may be the same or different], and the surface activity having a formula selected from the group consisting of Provide the agent. The invention also relates to a process for producing such surfactants, the use of such surfactants and emulsions comprising such surfactants. |