Polymers based on sulfonic acids, amides and special cross-linking agents

摘要

The invention relates to water-soluble or water-swellable polymers that contain a) 20.0 to 98.97 mole-% of one or more repeating structural units originating from special monomers with sulfonic acid groups or the salts thereof such as e.g. 2-acrylamido-2-methyl-propanesulfonic acid or the salts thereof, b) 1.0 to 60.0 mole-% of one or more repeating structural units containing an amide group and d) 0.01 to 8.0 mole-% of one or more repeating structural units originating from special crosslinking agents with at least three polymerizable double bonds. The polymers for example have an advantageous sensory property profile and are highly suitable as thickening agents even in salt-containing compositions. They are furthermore advantageously suitable for producing cosmetic, dermatological or pharmaceutical compositions.

主权项

1. A water-soluble or water-swellable polymer comprising:
a) 20.0 to 98.97 mol % of at least one structural unit, recurring independently of one another, of the formula (1) in whichRa is hydrogen, methyl or ethyl,A is linear or branched C1-C12-alkylene, andQ+ is a counterionand b) 1.0 to 60.0 mol % of at least one structural unit, recurring independently of one another, of the formula (2) in whichRb is hydrogen, methyl or ethyl,Rc is hydrogen, a linear or branched alkyl group having 1 to 50 carbon atoms, a linear or branched mono-hydroxyalkyl group having 2 to 6 carbon atoms or a linear or branched di-hydroxyalkyl group having 2 to 6 carbon atoms,Rd is a linear or branched alkyl group having 1 to 50 carbon atoms, a linear or branched mono-hydroxyalkyl group having 2 to 6 carbon atoms or a linear or branched di-hydroxyalkyl group having 2 to 6 carbon atoms,and d) 0.01 to 8.0 mol % of at least one crosslinking structural unit, recurring independently of one another, of the formula (5) in whichR1 is hydrogen, methyl, ethyl, methylol or ethylol,R2a, R2b and R2c, in each case independently of one another, are hydrogen, methyl or ethyl,X is a chemical bond, methylene, ethylene or a linear or branched alkylene group having 3 carbon atoms,Y1, Y2 and Y3, in each case independently of one another, are a chemical bond, O, CH2, C(O)O, OC(O), C(O)NR3 or NR3C(O),R3 is hydrogen or a linear or branched alkyl radical having 1 to 50 carbon atoms,D, E and F, in each case independently of one another, are methyleneoxy, ethyleneoxy, propyleneoxy, a linear or branched alkylene group having 1 to 6 carbon atoms, a linear or branched, mono- or polyunsaturated alkenylene group having 2 to 6 carbon atoms, a linear or branched mono-hydroxyalkylene group having 2 to 6 carbon atoms or a linear or branched di-hydroxyalkylene group having 3 to 6 carbon atoms,o, p and q, in each case independently of one another, are integers from 0 to 50, and the sum o+p+q is ≧3, wherein it is free from structural units of the formula (10) in which R1a is hydrogen, methyl or ethyl, Z+ is H+, NH4+, organic ammonium ions [HNR5bR6bR7b]+, where R5b, R6b and R7b, independently of one another, can be hydrogen, a linear or branched alkyl group having 1 to 22 carbon atoms, a linear or branched, mono- or polyunsaturated alkenyl group having 2 to 22 carbon atoms, a C6-C22-alkylamidopropyl group, a linear mono-hydroxyalkyl group having 2 to 10 carbon atoms or a linear or branched di-hydroxyalkyl group having 3 to 10 carbon atoms, and where at least one of the radicals R5b, R6b and R7b is not hydrogen, Li+, Na+, K+, ½ Ca++, ½ Mg++, ½ Zn++ or ⅓ Al+++ or mixtures of these ions, B is a linear or branched alkylene group having 1 to 6 carbon atoms, and n is an integer from 1 to 10.