Polymer composition including a cyclic olefin copolymer

Abstract

Polymer composition comprising a cyclic olefin polymer (COP) and a syndiotactic PP (s-PP) is described. A film including a layer comprising such a composition and specific applications thereof is also described.

1 . A polymer composition comprising a cyclic olefin polymer (COP) and a syndiotactic polypropylene (s-PP).  
   
   
       2 . The polymer composition according to  claim 1 , wherein said COP is a homo- or copolymer of norbornene with or without side chains.  
   
   
       3 . The polymer composition according to  claim 1 , further comprising at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers made produced by metallocene technology.  
   
   
       4 . A film comprising at least one basic layer comprising said polymer composition according to  claim 1 .  
   
   
       5 . The film according to  claim 4 , which further comprises at least on one side of the basic layer, a layer comprising s-PP and/or isotactic polypropylene (i-PP) produced by metallocene technology and at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers produced by metallocene technology.  
   
   
       6 . The film according to  claim 4 , further comprising at least one outer layer comprising 
 s-PP and/or isotactic polypropylene (i-PP) produced by metallocene technology;    at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers produced by metallocene technology; and    at least one resin selected from the group consisting of ethylene-vinyl-acetate (EVA) and ethylene-methyl acrylate (EMA) copolymers.    
   
   
       7 . The film according to  claim 4 , which comprises: 
 layer A (outer layer) comprising at least 60% s-PP and/or isotactic polypropylene (i-PP) produced by metallocene technology, and from 0 to 40% of at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers produced by metallocene technology;    layer B (basic layer) comprising a s-PP/COP blend comprising at least 70% COP, at least 1% s-PP, and from 0 to 29% of at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers produced by metallocene technology;    layer C (sealing layer) comprising at least 50% s-PP and/or isotactic polypropylene (i-PP) produced by metallocene technology; from 0 to 49% of at least one resin selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), SEBS with styrene-ethylene-butylene (SEB), styrene-ethylene-propylene-styrene (SEPS), SEPS with styrene-ethylene-propylene (SEP), and ethylene-1-octene copolymers produced by metallocene technology; and at least 1% of a mixture of ethylene-vinyl-acetate (EVA) and ethylene-methyl acrylate (EMA) copolymers;    and a scraps layer between said layer A and said layer B.    
   
   
       8 . A bag produced by welding said film according to  claim 4 .  
   
   
       9 . The bag according to  claim 8  wherein said bag is a multi-chamber bag comprising at least one permanent outer seal and at least one peelable seal.  
   
   
       10 . An injection moulded article comprising said polymer composition according to  claim 1.