Blends that consist of TPU and polyamide

Abstract

A composition contains at least a thermoplastic polyurethane (TPU-1) and a copolyamide (PA-1), prepared by polymerization of at least one lactam and of a monomer mixture (M). The monomer mixture (M) contains at least a C 32 -C 40 dimer acid as a component (B1), and at least a C 4 -C 12 diamine as a component (B2). A process can be used for preparing such compositions, and the composition can be used for producing shaped articles.

1 - 14 . (canceled) 
     
     
         15 : A composition, comprising at least:
 (I) a thermoplastic polyurethane (TPU-1), and   (II) a copolyamide (PA-1), prepared by polymerization of
 (A) at least one lactam, and 
 (B) a monomer mixture (M) comprising the following components:
 (B1) at least one C32-C40 dimer acid, and 
 (B2) at least one C4-C12 diamine. 
 
   
     
     
         16 : The composition according to  claim 15 , wherein the thermoplastic polyurethane (TPU-1) is based on an aromatic diisocyanate. 
     
     
         17 : The composition according to  claim 16 , wherein the thermoplastic polyurethane (TPU-1) has a Shore hardness in the range from 70 A to 85 D, determined in accordance with DIN 53505. 
     
     
         18 : The composition according to  claim 15 , wherein the thermoplastic polyurethane (TPU-1) is based on an aliphatic diisocyanate. 
     
     
         19 : The composition according to  claim 15 , wherein a proportion of the thermoplastic polyurethane (TPU-1) in the composition is in a range from 5% to 95% by weight, based on a sum total of components (I) and (II). 
     
     
         20 : The composition according to  claim 15 , wherein a proportion of the copolyamide (PA-1) in the composition is in a range from 5% to 95% by weight, based on a sum total of components (I) and (II). 
     
     
         21 : The composition according to  claim 15 , wherein the composition comprises at least one flame retardant selected from the group consisting of melamine cyanurate, magnesium hydroxide, and a phosphorus-containing flame retardant. 
     
     
         22 : The composition according to  claim 15 , wherein the composition comprises at least one first phosphorus-containing flame retardant (F1) selected from the group consisting of a derivative of phosphoric acid and a derivative of phosphonic acid, and
 wherein the composition comprises at least one further phosphorus-containing flame retardant (F2) selected from the group consisting of a derivative of phosphinic acid.   
     
     
         23 : The composition according to  claim 22 , wherein the at least one first phosphorus-containing flame retardant (F1) is a phosphinate. 
     
     
         24 : The composition according to  claim 23 , wherein the phosphinate is selected from the group consisting of an aluminum phosphinate and a zinc phosphinate. 
     
     
         25 : The composition according to  claim 22 , wherein the at least one further phosphorus-containing flame retardant (F2) is a phosphoric ester. 
     
     
         26 : The composition according to  claim 22 , wherein the at least one first flame retardant (F1) is selected from the group consisting of resorcinol bis(diphenyl phosphate) (RDP), bisphenol A bis(diphenyl phosphate) (BDP), and diphenyl cresyl phosphate (DPK). 
     
     
         27 : A process for producing a composition (Z-1), comprising:
 (a) providing the following components
 (I) a thermoplastic polyurethane (TPU-1), and 
 (II) a copolyamide (PA-1), prepared by polymerizing at least one lactam and a monomer mixture (M) comprising
 (B1) at least one C32-C40 dimer acid, and 
 (B2) at least one C4-C12 diamine; and 
 
   (b) mixing components (I) and (II).   
     
     
         28 : A method, comprising:
 producing a shaped article with the composition according to  claim 15 .   
     
     
         29 : A shaped article, comprising the composition according to  claim 15 .