Process for preparing deproteinized natural rubber latex molding and deproteinizing agent for natural rubber latex
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Dec 19, 1997
filing date -
Mar 14, 1995
priority date (Note) -
Expired
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Abstract
A method for producing a formed product of deproteinized natural rubber latex capable of reducing a content of an allergen in a natural rubber latex material to a level sufficient to keep the latex from being harmful to the human body without decreasing yields of the product and deteriorating formability of the latex. In the method, cleaning removal of a non-rubber content is carried out after each of protein decomposition, prevulcanization and forming. An aqueous alkali solution, ammonia, water containing free chlorine in an amount of 0.005 to 0.02% by weight or alcohol-water mixed liquid containing alcohol in an amount of 5 to 80% by weight is used as cleaning liquid for the cleaning removal. The method is suitably applied to production of a natural rubber product such as a rubber glove, a condom, a catheter, a foam rubber material and the like.
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