Title:
MULTILAYER SYRINGE BARREL FOR PREFILLED SYRINGES, SYRINGE AND PREFILLED SYRINGE
Document Type and Number:
Japanese Patent JP2018126475
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a multilayer syringe barrel for prefilled syringes that has excellent oxygen barrier properties after stored for a fixed period in a state of being filled with a chemical solution and has suppressed whitening, and a syringe and a prefilled syringe.SOLUTION: A multilayer syringe barrel for prefilled syringes has a layer (X) containing a cyclo olefinic polymer with a glass transition temperature of 100°C or less as the main component, and a layer (Y) containing a polyamide resin (A) as the main component, where the polyamide resin (A) has a diamine-derived constitutional unit and a dicarboxylate-derived constitutional unit, where 70 mol% or more of the diamine-derived constitutional unit is derived from m-xylylenediamine, and 30-60 mol% of the dicarboxylate-derived constitutional unit is derived from C4-20 α,ω-linear aliphatic dicarboxylate and 70-40 mol% of it is derived from isophthalic acid.SELECTED DRAWING: Figure 1
Inventors:
OKAZAKI HARUKA
Application Number:
JP2017025863A
Publication Date:
August 16, 2018
Filing Date:
February 15, 2017
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO
International Classes:
A61M5/28; A61J1/05; B29C45/16; B32B27/18; B32B27/32
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes