C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/12 (2006.01) C08F 4/30 (2006.01) C08F 220/04 (2006.01) C08F 220/20 (2006.01)
Patent
CA 2731835
A method for preparing hydrophobically modified rheology modifiers; said method comprising polymerizing a monomer mixture having two or more components. The first component is H2C=C(R)C(O)X(CH2CH2O)n(CH(R')CH2O)m R" or H2C=C(R)C6H4C(CH3)2NHCO2(CH2CH2O)n(CH(R')CH2O)m R", wherein X is O or NH, R is H or CH3, R' is C1-C2 alkyl, R" is C8-C22 alkyl or C8-C16 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 C3-C6 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.
Bobsein Barrett Richard
Creamer Marianne Patricia
Greyson Eric
Madle Thomas
Manna Joseph
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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