Container formed from multimodal ethylene polymer

Abstract

A container is disclosed comprising a multimodal ethylene polymer having a standard density of at least 950 kg/m 3 and a fluidity index MI 2 of from 1 to 10 g/10 min, said multimodal ethylene polymer comprising: from 20 to 65 wt %, based on the total weight of the multimodal ethylene polymer, of a fraction comprising ethylene polymer (A) having a density of more than 965 kg/m 3 and a fluidity index MI 2 (A) of at least 10 g/10 min; and from 80 to 35 wt %, based on the total weight of the multimodal ethylene polymer, of a fraction comprising a copolymer (B) of ethylene and at least one alpha-olefin containing from 3 to 12 carbon atoms, and having a fluidity index MI 2 (B) of less than 10 g/min and a content of said alpha-olefin(s) of 0.1 to 5 mol %.

1 . Container comprising a multimodal ethylene polymer having a standard density of at least 935 kg/m 3  and a fluidity index MI 2  of from 1 to 10 g/10 min, said multimodal ethylene polymer comprising: 
 from 20 to 65 wt %, based on the total weight of the multimodal ethylene polymer, of a fraction comprising ethylene polymer (A) having a density of more than 950 kg/m 3  and a fluidity index MI 2  (A) of at least 10 g/10 min; and    from 80 to 35 wt %, based on the total weight of the multimodal ethylene polymer, of a fraction comprising a copolymer (B) of ethylene and at least one alpha-olefin containing from 3 to 12 carbon atoms, and having a fluidity index MI 2  (B) of less than 10 g/min and a content of said alpha-olefin(s) of 0.1 to 5 mol %.    
     
     
         2 . Container comprising ethylene polymer having a standard density of at least 935 kg/m 3 , a fluidity index MI 2  of from I to 10 g/10 min, a Vicat point of at least 126.5° C. and a resistance to slow cracking, measured according to ASTM D 1693 (1980), condition A of at least 60 hours.  
     
     
         3 . Container according to  claim 1 , wherein the standard density of the ethylene polymer (A) is more than 965 kg/m 3 .  
     
     
         4 . Container according to  claim 1 , wherein the proportion of ethylene polymer (A) is from 30 to 40 wt %.  
     
     
         5 . Container according to  claim 1 , wherein the standard density of the multimodal ethylene polymer is at least 950 kg/m 3 .  
     
     
         6 . Container according to  claim 1 , which has a volume of less than 2 L.  
     
     
         7 . Container according to  claim 1 , which is formed only of said multimodal ethylene polymer.  
     
     
         8 . Container according to  claim 1 , wherein polymer (A) is a homopolymer of ethylene.  
     
     
         9 . Container according to  claim 1 , wherein the multimodal ethylene polymer has a fluidity index MI 2  of from 1 to 3 g/10 min.  
     
     
         10 . Container according to  claim 1 , wherein the multimodal ethylene polymer has a density of no more than 962 kg/m 3 .  
     
     
         11 . Container according to  claim 1 , wherein the multimodal ethylene polymer has a Mw/Mn of 9 or less.  
     
     
         12 . Container according to  claim 1 , wherein the multimodal ethylene polymer has a Mw/Mn of at least 5.  
     
     
         13 . Container according to  claim 1 , wherein the multimodal ethylene polymer has a ratio MI 2 (A)/MI 2  of from 5 to 200.  
     
     
         14 . Container according to  claim 1 , wherein the MI 2  (B) is from 0.08 to 0.8 g/10 min.  
     
     
         15 . Container according to  claim 1 , wherein the copolymer (B) comprises units derived from ethylene and butene-1.  
     
     
         16 . Container according to  claim 1 , wherein the multimodal ethylene polymer is obtained by polymerisation in at least two reactors connected in series.  
     
     
         17 . Container according to  claim 1  or  2 , which is a bottle.  
     
     
         18 . Bottle Container according to  claim 1  or  2 , which is a bottle that has been sterilised.  
     
     
         19 . (canceled)