METHOD FOR PRODUCING CARBOXYL-GROUP-CONTAINING NITRILE RUBBER
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United States of America
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Issued Date -
Jan 30, 2020
app pub date -
Mar 23, 2018
filing date -
Mar 23, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A method of producing a carboxyl group-containing nitrile rubber including a coagulation step of coagulating a carboxyl group-containing nitrile rubber component by mixing a monovalent metal salt and a polymer flocculating agent into a carboxyl group-containing nitrile rubber latex having an iodine value of 120 or less, wherein the monovalent metal salt is compounded in an amount of 3 to 25 parts by weight and the polymer flocculating agent is compounded in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of a rubber solid content in the latex, and a weight ratio of the monovalent metal salt/the polymer flocculating agent is in the range of 10 to 500
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