Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-06-17
1977-07-12
Phynes, Lucille M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 458A, 260 458N, C08G 236
Patent
active
040353389
ABSTRACT:
A method of stabilizing oxymethylene copolymers which comprises heating an oxymethylene copolymer in a hydrocarbonaceous mixed medium consisting of about 50 - 92% by weight of a hydrocarbon having 5 - 7 carbon atoms, about 6 - 48% by weight of an alcohol and about 2 - 20% by weight of water based on the total amount of the medium, at a temperature of from about 100.degree. to about 170.degree. C. in the presence of a salt selected from the group consisting of the sodium and potassium salts of ethylenediaminetetraacetic acid under the conditions of a pH value of from about 4 to about 7.
REFERENCES:
patent: 3718630 (1973-02-01), Leverett
patent: 3756985 (1973-09-01), Gerlach et al.
patent: 3875117 (1975-04-01), Ackermann et al.
patent: 3880804 (1975-04-01), Ishii et al.
Arima Choji
Ishii Takami
Kojima Hiroshi
Suzuki Taro
Takikawa Naohisa
Phynes Lucille M.
Ube Industries Ltd.
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