Title:
PACKING MATERIAL FOR MEDICAL APPLIANCE
Document Type and Number:
Japanese Patent JP3022473
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve heat-discoloration-coloring resistance or the like by blending 2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenyl acrylate with a styrene-butadiene block copolymer whose styrene quantity is set to a specific quantity.
SOLUTION: A packing material for a medical appliance is manufactured from a material by blending 2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydoxyphenyl) ethyl]phenyl acrylate with a styrene-butadiene block copolymer on which a styren quantity to the total quantity of styrene and butadiene is 5 to 60 wt.%. At the same time, a phenol type antioxidant, a phosphorus type antioxidant or the like are used at the same time, and heat resistant work stability at high temperature molding time is improved thereby. Pentaerythrityl tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] or the like can be cited as a phenol type antioxidant.
Inventors:
Rank Kanako
Shinichi Hachi
Manji Sasaki
Inoue Kikumitsu
Shinichi Hachi
Manji Sasaki
Inoue Kikumitsu
Application Number:
JP7920698A
Publication Date:
March 21, 2000
Filing Date:
March 26, 1998
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
A61J1/10; A61B19/02; A61L2/26; A61M5/00; C08F287/00; C08K5/13; C08K5/36; C08K5/49; C08L53/02; (IPC1-7): A61B19/02; A61L2/26; A61M5/00; C08K5/13; C08K5/36; C08K5/49; C08L53/02
Domestic Patent References:
| JP1172434A | ||||
| JP1170626A | ||||
| JP1168643A | ||||
| JP63182386A | ||||
| JP63179953A | ||||
| JP6327551A | ||||
| JP62225511A |
Attorney, Agent or Firm:
Takashi Kuboyama (1 person outside)