Polymer comprising amide and ester groups, method for production and use thereof

Abstract

A polymer (P) is disclosed which includes amide and ester groups. The polymer can be produced by a process whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed. In a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. Polymers produced by the above method can be included in hydraulic-setting compositions before and after hardening by an addition of water.

1 . A polymer P comprising:
 amide groups; and   ester groups, the polymer P being made according to a process which includes:   reacting, in a first step, a homo- or copolymer P1 of (meth)acrylic acid with a monohydroxylic compound E at a temperature of up to 200° C. so as to form anhydride groups in addition to ester groups; and   reacting in a second step, the anhydride groups formed in the first step with a monoamine compound A at temperatures significantly below 100° C. to give the amide.   
     
     
         2 . A polymer P according to  claim 1 , wherein the polymer P has the formula: 
       
         
           
           
               
               
           
         
         where M=cation; 
         R 7  are each independently an H or methyl; 
       
       and
 R 2  and R 3  together form a ring which optionally comprises oxygen, sulfur or further nitrogen atoms; 
 
       or
 R 2  and R 3  are each independently an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group having from 5 to 9 carbon atoms, an aralkyl group having from 7 to 12 carbon atoms, a hydroxyalkyl group, a compound of the formula (III), (IV), or (V) or H: 
 
       
         
           
           
               
               
           
         
       
       and
 R 2  and R 3′  together form a ring which optionally comprises oxygen, sulfur or further nitrogen atoms; 
 
       or
 R 2′  and R 3′  are each independently an alkyl group having from 8 to 20 carbon atoms, a cycloalkyl group having from 5 to 9 carbon atoms, an aralkyl group having from 7 to 12 carbon atoms, a compound of the formula (III'), (IV') or (V′) or H: 
 
       
         
           
           
               
               
           
         
       
       and 
       n+m+m′+p=10-250, and n>0, m>0, p>0 and m′ 0, and where R 4  and R 4′  are each an alkylene group, R 5  and R 5  are each a C 1 - to C 4 -alkyl group, R 6  and R 6′  are each an alkylene group optionally having heteroatoms, 
       X is an S, O or N, 
       v=1 when X=S or 0, or v=2 when X=N, 
       x, y, z each independently have the values of 0-250 and x+y+z=3-250; 
       EO=ethyleneoxy, PO=propyleneoxy, BuO=butyleneoxy or isobutyleneoxy, with a sequence of the EO, PO, BuO units in any possible sequence; and 
       R 1 =alkyl group having 1-20 carbon atoms or alkylaryl group having 7-20 carbon atoms; and wherein a ratio of a:b1:b2:c=(0.1-0.9): (0-0.06):(0.001-0.4):(0.099-0.899), and where the sum of a+b1+b2+c forms the value 1 and where the ratio of b2/a>0 and ≦1. 
     
     
         3 . The polymer P as claimed in  claim 1 , configured as a plasticizer for hydraulically setting compositions. 
     
     
         4 . A polymer P as claimed in  claim 2 , in combination with a hydraulically setting composition. 
     
     
         5 . A polymer P as claimed in  claim 2 , in combination with a water-hardened hydraulically setting composition. 
     
     
         6 . A polymer P as claimed in  claim 1 , configured as a dispersant.