Wax composition and its use

Abstract

A wax composition comprises at least three amide waxes A, B, and C, where amide wax A is the reaction product of alkylenediamine with linear fatty acids or with mixtures composed of fatty acids, amide wax B is the reaction product of alkylenediamine with 12-hydroxystearic acid, and amide wax C is the reaction product of alkylenediamine with 12-hydroxystearic acid and with linear fatty acids. The wax composition is suitable as a processing aid in engineering thermoplastics or for the preparation of solvent-based wax pastes or the preparation of wax micronizates for coatings or for the preparation of aqueous dispersions.

1 . A wax composition comprising at least three amide waxes A, B, and C, wherein
 amide wax A is the reaction product of alkylenediamine with linear fatty acids or with mixtures of fatty acids,   amide wax B is the reaction product of alkylenediamine with 12-hydroxystearic acid, and   amide wax C is the reaction product of alkylenediamine with 12-hydroxystearic acid and with linear fatty acids.   
     
     
         2 . The wax composition as claimed in  claim 1 , wherein amide wax A is the reaction product of ethylenediamine with linear fatty acids or with mixtures of fatty acids without additional functional groups, having the structure
   CH 3 —(CH 2 ) n —CO—NH—CH 2 CH 2 —NH—CO—(CH 2 ) n —CH 3      
       where n=from 6 to 20. 
     
     
         3 . The wax composition as claimed in  claim 1 , wherein amide wax B is the reaction product of ethylenediamine with 12-hydroxystearic acid, having the structure
   CH 3 —(CH 2 ) 5 —CHOH—(CH 2 ) 10 CO—NH—CH 2 CH 2 —NH—CO—(CH 2 ) 10 —CHOH—(CH 2 ) 5 —CH 3      
     
     
         4 . The wax composition as claimed in  claim 1 , wherein amide wax C is the reaction product of ethylenediamine with 12-hydroxystearic acid and with linear fatty acids, having the structure
   CH 3 —(CH 2 ) 5 —CHOH—(CH 2 ) 10 CO—NH—CH 2 CH 2 —NH—CO—(CH 2 ) n —CH 3      
       where n=from 6 to 20. 
     
     
         5 . The wax composition as claimed in  claim 1 , having from 1 to 85% by weight of amide wax A, from 1 to 85% by weight of amide wax B, and from 1 to 50% by weight of amide wax C, based in each case on the total weight of the wax composition. 
     
     
         6 . The wax composition as claimed in  claim 1 , having from 5 to 75% by weight of amide wax A, from 5 to 75% by weight of amide wax B, and from 1 to 40% by weight of amide wax C, based in each case on the total weight of the wax composition. 
     
     
         7 . A processing aid for a thermoplastic comprising a wax composition as claimed in  claim 1 . 
     
     
         8 . The processing aid as claimed in  claim 7 , wherein the thermoplastic is selected from the group consisting of PVC, polystyrene, polyamide, polycarbonate, polyalkylene terephthalate, polyoxymethylene, polyphenylene oxide, and thermoplastic polyurethane, 
     
     
         9 . A preparation aid for solvent-based wax pastes comprising a wax composition as claimed in  claim 1 . 
     
     
         10 . A wax micronizate comprising a wax composition as claimed in  claim 1 . 
     
     
         11 . An aqueous dispersion comprising a wax composition as claimed in  claim 1 . 
     
     
         12 . A thermoplastic comprising at least one thermoplastic and a wax composition according to  claim 1 , and wherein the wax composition is present from 0.1 to 10% by weight, preferably from 0.2 to 5% by weight, particularly preferably from 0.2 to 2% by weight, based on the total weight of plastic and wax composition. 
     
     
         13 . The thermoplastic as claimed in  claim 12 , wherein the wax composition is present from 0.2 to 5% by weight. 
     
     
         14 . The thermoplastic as claimed in  claim 12 , wherein the wax composition is present from 0.2 to 2% by weight. 
     
     
         15 . A paint comprising the preparation aid as claimed in  claim 9 . 
     
     
         16 . The micronizate as claimed in  claim 10 , further comprising at least one millable wax. 
     
     
         17 . A coating comprising a wax micronizate as claimed in  claim 10 . 
     
     
         18 . A coating comprising a wax micronizate as claimed in  claim 16 .