Resin molding and worked item therefrom
AssigneeJsr Corporation
InventorsTeruo Aoyama, Minoru Furuichi
Life of this patent
Estimating the term…
Abstract
A resin molded article which is a molded article obtained by irradiating a resin molded article containing 100 to 60 parts by weight of (A) syndiotactic 1,2-polybutadiene having a crystallinity of 5% or more and 0 to 40 parts by weight of (B) another thermoplastic polymer with an electron beam, in which the 50% stress of the molded article after the electron beam irradiation (50% M:M2) is from 1.01 to 2.5 times the 50% stress before the electron beam irradiation (50% M:M1), and the molded article has steam sterilization resistance. The molded article is excellent in flexibility and hardness, excellent in steam sterilization resistance, and useful for medical applications such as an infusion tube, an infusion solution container, a catheter and the like.
Claims19
1-9. (canceled)
A resin molded article characterized in that the resin molded article is a molded article obtained by irradiating a resin molded article containing 100 to 60 parts by weight of (A) syndiotactic 1,2-polybutadiene having a crystallinity of 5% or more and 0 to 40 parts by weight of (B) at least one thermoplastic polymer selected from the group of polypropylene, a styrene-butadiene-styrene block copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), a hydrogenerated thereof (SEBS or SEPS), polybutadiene (BR) other than the syndiotactic 1,2-polybutadiene, an ABS resin, polyisoprene, polyethylene (LLDPE, ULDPE or LDPE), an ethylene-vinyl acetate copolymer, an ethylene-acrylate ester copolymer and an ethylene-methacrylate copolymer [with the proviso that (A)+(B)=100 parts by weight), with an electron beam, in which the 50% stress of the molded article after the electron beam irradiation (50% M:M2) is from 1.01 to 2.5 times the 50% stress before the electron beam irradiation (50% M:M1), and the molded article has steam sterilization resistance.
A processed product obtained by processing a resin molded article obtained by irradiating a resin molded article containing 100 to 60 parts by weight of (A) syndiotactic 1,2-polybutadiene having a crystallinity of 5% or more and 0 to 40 parts by weight of (B) at least one thermoplastic polymer selected from the group of polypropylene, a styrene-butadiene-styrene block copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), a hydrogenerated thereof (SEBS or SEPS), polybutadiene (BR) other than the syndiotactic 1,2-polybutadiene, an ABS resin, polyisoprene, polyethylene (LLDPE, ULDPE or LDPE), an ethylene-vinyl acetate copolymer, an ethylene-acrylate ester copolymer and an ethylene-methacrylate copolymer [with the proviso that (A)+(B)=100 parts by weight), with an electron beam, in which the 50% stress of the molded article after the electron beam irradiation (50% M:M2) is from 1.01 to 2.5 times the 50% stress before the electron beam irradiation (50% M:M1), and the molded article has steam sterilization resistance.
Dependencies are inferred from the claim text.