Title:
RUBBER STOPPER FOR MEDICAL CONTAINER
Document Type and Number:
Japanese Patent JPH04117425
Kind Code:
A
Abstract:
PURPOSE:To obtain the title stopper which does not stain the contained medicine and excels in resealability and gas barrier properties by impregnating a rubber stopper prepared by molding a rubber containing butyl rubber as the main base rubber with a specified amount of a specified substance. CONSTITUTION:A rubber stopper prepared by molding a rubber containing butyl rubber as the main base rubber is impregnated with 5-100 pts.wt., per 100 pts.wt. rubber stopper, petroleum-derived softener (e.g. liquid paraffin) and/or liquid oligomer (e.g. isobutylene oligomer).
Inventors:
KURAMOCHI HIROSHI
Application Number:
JP23662990A
Publication Date:
April 17, 1992
Filing Date:
September 07, 1990
Export Citation:
Assignee:
PORITETSUKU DEZAIN KK
International Classes:
C08J5/00; B29D99/00; C08L23/00; B29K23/00; (IPC1-7): B29D31/00; B29K23/00; C08J5/00; C08L23/00