Composite having two or more layers, including an EVOH layer

Abstract

The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units; (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least on polyamine, having at least 4 nitrogen atoms and having a number-average molar mass M n of at least 146 g/mol, and (β) at least one polyamide-forming monomer selected from the group including lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof; wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include monomer units selected from the group including caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.

1 . A layered composite, comprising the following layers: 
 (I) a layer I composition comprising: 
 (a) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA6, PA66, PA6/66 and mixtures thereof;  
 (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer comprising the following monomer units; 
 (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least one polyamine having at least 4 nitrogen atoms and having a number-average molar mass M n  of at least 146 g/mol, and  
 (β) at least one polyamide-forming monomer selected from the group consisting of lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and  
 
 (c) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof; 
 wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100;  
 wherein within an entirety of (a) and (b), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and  
 wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety comprise monomer units selected from the group consisting of ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof; and  
 
   (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.    
     
     
         2 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at least 0.5 part by weight of (a),    at least 0.5 part by weight of (b),    at least 0.5 part by weight of (c),    and combinations thereof.    
     
     
         3 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at least 10 parts by weight of (a),    at least 2 parts by weight of (b),    at least 10 parts by weight of (c),    and combinations thereof.    
     
     
         4 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at least 20 parts by weight of (a),    at least 5 parts by weight of (b),    at least 20 parts by weight of (c),    and combinations thereof.    
     
     
         5 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at least 30 parts by weight of (a),    at least 10 parts by weight of (b),    at least 30 parts by weight of (c),    and combinations thereof.    
     
     
         6 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at most 70 parts by weight of (a),    at most 80 parts by weight of (b), and    at most 70 parts by weight of (c).    
     
     
         7 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one selected from the group consisting of: 
 at most 60 parts by weight of (a),    at most 60 parts by weight of (b), and    at most 60 parts by weight of (c).    
     
     
         8 . The composite as claimed in  claim 1 , wherein 
 the layer I composition comprises not more than 40 parts by weight of (b).    
     
     
         9 . The composite as claimed in  claim 1 , wherein 
 the polyamine-polyamide copolymer (b) comprises from 1 to 20% by weight of the polyamine (α).    
     
     
         10 . The composite as claimed in  claim 1 , wherein 
 the polyamine-polyamide copolymer (b) comprises from 1.5 to 16% by weight of the polyamine (α).    
     
     
         11 . The composite as claimed in  claim 1 , wherein 
 the polyamine (α) comprises at least 8 nitrogen atoms.    
     
     
         12 . The composite as claimed in  claim 1 , wherein 
 the polyamine (α) comprises at least 11 nitrogen atoms.    
     
     
         13 . The composite as claimed in  claim 1 , wherein the polyamine (α) has a number-average molar mass M n  of at least 500 g/mol.  
     
     
         14 . The composite as claimed in  claim 1 , wherein the polyamine (α) has a number-average molar mass M n  of at least 800 g/mol.  
     
     
         15 . The composite as claimed in  claim 1 , wherein an amino group concentration in the polyamine-polyamide copolymer (b) is in the range from 100 to 2,500 mmol/kg.  
     
     
         16 . The composite as claimed in  claim 1 , wherein the layer I composition comprises at least one block copolymer comprising (a) and (b) monomer units.  
     
     
         17 . The composite as claimed in  claim 1 , further comprising at least one layer comprising at least one selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212, and combinations thereof.  
     
     
         18 . The composite as claimed in  claim 1 , further comprising at least one layer comprising at least one selected from the group consisting of PA6, PA66, PA6/66, and combinations thereof.  
     
     
         19 . The composite as claimed in  claim 1 , wherein the composite comprises two of the I layers.  
     
     
         20 . The composite as claimed in  claim 1 , further comprising at least one regrind layer.  
     
     
         21 . The composite as claimed in  claim 1 , wherein 
 the composite comprises a layer sequence I/II/I.    
     
     
         22 . The composite as claimed in  claim 1 , wherein 
 the composite comprises the following sequence of layers; 
 (a) layer comprising at least one selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212, and combinations thereof;  
 (b) layer I;  
 (c) layer II; and  
 (d) layer comprising at least one selected from the group consisting of PA6, PA66, PA6166, and combinations thereof.  
   
     
     
         23 . The composite as claimed in  claim 1 , comprising at least one outer layer comprising at least one selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212, and combinations thereof.  
     
     
         24 . The composite as claimed in  claim 1 , comprising at least one electrically conductive layer.  
     
     
         25 . The composite as claimed in  claim 1 , comprising at least one innermost layer and further comprising at least one electrically conductive layer adjacent to the innermost layer.  
     
     
         26 . The composite as claimed in  claim 1 , wherein the polyamide in at least one of (a), (c) or both comprise not more than 50% by weight of additives.  
     
     
         27 . The composite as claimed in  claim 1 , wherein the composite is in the form of a tube.  
     
     
         28 . The composite as claimed in  claim 1 , wherein at least one region of the composite has a corrugated shape.  
     
     
         29 . The composite as claimed in  claim 1 , wherein the composite is in the form of a hollow article.  
     
     
         30 . The composite as claimed in  claim 1 , comprising at least one outermost layer, and further comprising an elastomer layer adjacent to the outermost layer.  
     
     
         31 . A tubular article selected from the group consisting of fuel, brake-fluid pipe, coolant pipe, hydraulic-fluid pipe, fuel-pump pipe, air-conditioner pipe, and a vapor line, comprising the composite as claimed in  claim 1 .  
     
     
         32 . An article selected from the group consisting of a container, fuel container, filler pipe, and filler pipe for a tank, comprising the composite as claimed in  claim 1 .  
     
     
         33 . A film, comprising the composition as claimed in  claim 1 .  
     
     
         34 . A method for preparing the composite as claimed in  claim 1 , comprising at least one selected from the group consisting of multicomponent injection molding, coextrusion, and coextrusion blow molding at least one of the layers I, II, or both.  
     
     
         35 . A molding composition, comprising the following components: 
 (a) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA6, PA66, PA6/66 and mixtures thereof;    (b) from 0.5 to 100 parts by weight of at least one polyamine-polyamide copolymer comprising the following monomer units; 
 (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least one polyamine having at least 4 nitrogen atoms and having a number-average molar mass M n  of at least 146 g/mol, and  
 (β) at least one polyamide-forming monomer selected from the group consisting of lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and  
   (c) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof; 
 wherein, a total of the parts by weight of (a), (b) and (c) is 100;  
 wherein within an entirety of (a) and (b), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and  
 wherein within an entirety of (b) and (c), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof.  
   
     
     
         36 . A molding composition, comprising the following components: 
 (a) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof;    (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer comprising the following monomer units; 
 (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and having a number-average molar mass M n  of at least 146 g/mol, and  
 (β) at least one polyamide-forming monomer selected from the group consisting of lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and  
   (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof; 
 wherein a total of the parts by weight of (a), (b) and (c) is 100;  
 wherein within an entirety of (a) and (b), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof;  
 wherein within an entirety of (b) and (c), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, ad mixtures thereof; and  
 wherein said molding composition comprises at least one block copolymer comprising (a) and (c) monomer units.