| 摘要 |
A method for preparing hydrophobically modified rheology modifiers; said method comprising polymerizing a monomer mixture having two or more components. The first component is H 2 C=C(R)C(O)X(CH 2 CH 2 O) n (CH(R')CH 2 O) m R" or H 2 C=C(R)C 6 H 4 C(CH 3 ) 2 NHCO 2 (CH 2 CH 2 O) n (CH(R')CH 2 O) m R", wherein X is O or NH, R is H or CH 3 , R' is C 1 -C 2 alkyl, R" is C 8 -C 22 alkyl or C 8 -C 16 alkylphenyl, n is an average number from 6-100 and m is an average number from 0-50, provided that n‰¥m and m+n is 6-100. The second component is a C 3 -C 6 carboxylic acid monomer; wherein polymerization occurs in the presence of an oxidant, a reductant and a metal catalyst, and substantially in the absence of a peroxide, hydroperoxide or perester containing an alkyl group having at least five carbon atoms. |
