Plaster containing 4-biphenylacetic acid
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United States of America Patent
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-
Aug 22, 2006
Grant Date -
Nov 21, 2002
app pub date -
May 31, 2001
filing date -
Jun 1, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
It is provided the plaster of anti-inflammatory and analgesic, improving the sustained releasing of 4-biphenylacetic acid from the base adhesive material and low skin irritation, by using more than two kinds of resolvent for 4-biphenylacetic acid having low solubility in solvents. More specifically, it is provided plasters essentially containing 5 50% by weight of styrene-isoprene-styrene block copolymer, 0.05 20% by weight of N-methyl-2-pyrrolidone, 0.1 20% by weight of polyethylene glycol and 0.1 20% by weight of 4-biphenylacetic acid.
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