Rubber composition containing an organic compound having two maleimide groups and a rubber article for pharmaceuticals and medical treatment
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United States of America Patent
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Nov 30, 1999
Issued Date -
N/A
app pub date -
May 20, 1998
filing date -
Aug 24, 1990
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Abstract
There is provided a rubber composition and a rubber article for pharmaceutical chemicals or medical treatments, obtained by forming and cross-linking this rubber composition, the rubber article having very excellent properties which can be adapted to the standard test values of various official documents, required in this field, and can further satisfy the test items having lately become an important problem from the pharmaceutical standpoint. This rubber composition comprises 0.3 to 3.5 parts by weight of an organic peroxide cross-linking agent, 0.3 to 4 parts by weight of an organic compound having at least 2 maleimide groups in one molecule and optionally, 0.6 to 30 parts by weight of an organosilicone compound per 100 parts by weight of a isobutylene-isoprene copolymer rubber.
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