Hydrogenated norbornene-based ring-opening polymerization polymer, resin composition, and molded object

Abstract

A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene is disclosed. The hydrogenated norbornene ring-open polymer has a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution (Mw/Mn) of 1.5 to 10.0, and a melting point of 110 to 145° C. Also disclosed is a hydrogenated norbornene ring-open polymer (hydrogenated polymer) obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. The hydrogenated ring-open polymer has a melting point of 110 to 145° C. A resin composition and a molding material containing these hydrogenated polymers, a molded article, a resin film, a resin sheet, a multilayer laminate, a packing material, a molded article for medical supplies, a blister molding sheet, a blister molded article, and a multilayer blow-molded container made of these hydrogenated polymers are also disclosed.

1 . A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene, the hydrogenated norbornene ring-open polymer having a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution (Mw/Mn) of 1.5 to 10.0, and a melting point of 110 to 145° C. 
   
   
       2 . A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 1 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C. 
   
   
       3 . The hydrogenated norbornene ring-open polymer according to  claim 2 , having a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) of 50,000 to 200,000. 
   
   
       4 . The hydrogenated norbornene ring-open polymer according to  claim 2 , having a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of 1.5 to 10.0. 
   
   
       5 . A resin composition comprising the hydrogenated norbornene ring-open polymer according to  claim 1  or  2 . 
   
   
       6 . The resin composition according to  claim 5 , further comprising 0.01 to 1 part by weight of an antioxidant per 100 parts by weight of the hydrogenated norbornene ring-open polymer. 
   
   
       7 . A resin film or sheet obtained by molding the hydrogenated norbornene ring-open polymer according to  claim 1  or  2  or the resin composition according to  claim 5 . 
   
   
       8 . A molding material comprising a hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene or a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 100 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 0 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C., and the amount of organic substances discharged from the molding material when heated at 80° C. for 60 minutes being not more than 1 ppm. 
   
   
       9 . The molding material according to  claim 8 , wherein the content of transition metals is not more than 1 ppm. 
   
   
       10 . A molded article obtained by molding the molding material according to  claim 8 . 
   
   
       11 . The molded article according to  claim 10 , which is a material for processing electronic parts. 
   
   
       12 . The molded article according to  claim 11 , which is a wafer carrier for semiconductor production. 
   
   
       13 . A multilayer laminate having two or more resin layers of which at least one layer is a layer of a hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene or a monomer mixture of 2-norbornene and a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 100 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 0 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C. 
   
   
       14 . The multilayer laminate according to  claim 13 , wherein at least one layer is a layer containing a gas barrier resin. 
   
   
       15 . The multilayer laminate according to  claim 14 , wherein the gas barrier resin is an ethylene-vinyl alcohol copolymer. 
   
   
       16 . The multilayer laminate according to  claim 13 , wherein at least one layer is a layer containing at least one resin selected from the group consisting of a polyolefin resin, a polyamide resin, and a polyester resin. 
   
   
       17 . A packing material obtained by fabricating the multilayer laminate according to  claim 13 . 
   
   
       18 . A medical supply packing material having at least one resin layer which is a layer of a hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene or a monomer mixture of 2-norbornene and a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 100 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 0 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C. 
   
   
       19 . The medical supply packing material according to  claim 18 , further comprising at least one polyolefin resin layer. 
   
   
       20 . The medical supply packing material according to  claim 19 , wherein the polyolefin resin layer is a polyethylene resin layer. 
   
   
       21 . The medical supply packing material according to  claim 18 , which is an infusion solution bag. 
   
   
       22 . A blister molding sheet having at least one resin layer of a hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene or a monomer mixture of 2-norbornene and a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 100 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 0 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C. 
   
   
       23 . The blister molding sheet according to  claim 22 , which is a multilayer laminate comprising at least one polyolefin resin layer. 
   
   
       24 . The blister molding sheet according to  claim 23 , wherein the polyolefin resin is a polypropylene resin. 
   
   
       25 . A blister molded article obtained by molding the blister molding sheet according to  claim 22 . 
   
   
       26 . A blow-molded container having at least one resin layer of a hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene or a monomer mixture of 2-norbornene and a substituent-containing norbornene monomer, the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units being 90 to 100 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units being 0 to 10 wt %, and the hydrogenated norbornene ring-open polymer having a melting point of 110 to 145° C.