Patent ID: 7799890

Claim:
A rheology control additive comprising amide-containing polymers of the general formula (I) A-X—CO—(CH 2 ) 2 —NR 1 —R 2 —(Y—R 3 —Y—R 4 ) a —B (I) or their salts with carboxylic acids, phosphoric esters or sulphonic acids, where A is R 5 or R 6 —Y—(R 4 —Y—R 3 —Y) b —R 2 —NR 1 —(CH 2 ) 2 —CO—X—R 7 and B is Y—R 6 or NR 1 —(CH 2 ) 2 —CO—X—R 5 , and where R 1 is H, (CH 2 ) 2 —CO—X—R 5 , CONH—R′ or a mixture thereof wherein R′═R 8 or —C 6 H 3 (CH 3 )—NHCOO—R 8 , R 2 , R 3 , R 4 and R 7 independently of one another are a (C 1 -C 40 )alkylene, (C 3 -C 40 )alkenylene, (C 5 -C 40 )cycloalkylene, arylene, (C 7 -C 40 )aralkylene or polyoxyalkylene radical or a polyester radical, R 5 is H, a (C 1 -C 22 )alkyl, aryl, (C 7 -C 12 )aralkyl, (C 5 -C 12 )cycloalkyl, hydroxyalkyl or N,N′-dialkylamino radical, a hydroxyl, (C 1 -C 22 )alkoxy, (C 5 -C 12 )cycloalkoxy, or (C 7 -C 12 )aralkoxypolyoxyalkylene radical, or a (C 1 -C 22 )alkanol-, (C 5 -C 12 )cycloalkanol-, (C 7 -C 12 )aralkanol-started or a (C 1 -C 22 )alkoxy-, (C 5 -C 12 )cycloalkoxy-, or (C 7 -C 12 )aralkoxy-polyoxyalkylene-started polyester, R 6 is a (C 1 -C 30 )alkyl, (C 3 -C 22 )alkenyl, hydroxyalkyl, (C 4 -C 13 )cycloalkyl, aryl or (C 7 -C 12 )aralkyl radical, R 8 is a (C 1 -C 22 )alkyl, aryl, (C 7 -C 12 )aralkyl, or (C 5 -C 12 )cycloalkyl radical, a (C 1 -C 22 )alkoxy, (C 5 -C 12 )cycloalkoxy, or (C 7 -C 12 )aralkoxypolyoxyalkylene radical, a (C 1 -C 22 )alkanol-, (C 5 -C 12 )cycloalkanol-, or (C 7 -C 12 )aralkanol-started or a (C 1 -C 22 )alkoxy-, (C 6 -C 12 )cycloalkoxy-, or (C 7 -C 12 )aralkoxypolyoxyalkylene-started polyester, X is identical or different radicals O, NH or NR 9 , R 9 is a (C 1 -C 22 )alkyl, aryl, (C 7 -C 12 )aralkyl, hydroxyalkyl, or (C 5 -C 12 )cycloalkyl radical, Y is one or more of the following groups COO, OCO, NHCO, CONH, NHCOO, OOCNH, NHCONH, and a and b independently of one another are a number from 1 to 19.