Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1980-05-22
1981-12-29
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568742, 568749, 568763, C07C 3768, C07C 3788
Patent
active
043084060
ABSTRACT:
Dihydric phenol is effectively prevented from discoloration by mixing the dihydric phenol with 0.00001 to 0.1% by weight of hydrocarboxylic acid on the basis of the dihydric phenol.
REFERENCES:
patent: 2691669 (1954-10-01), Walker
patent: 2736753 (1956-02-01), Jacobs
patent: 4239921 (1980-12-01), Hashimoto et al.
Harada Haruhisa
Maki Hiroshi
Sasaki Shigeru
Takenaka Masaaki
Lone Werren B.
Sumitomo Chemical Company Limited
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