Document Type and Number:
Japanese Patent JPS5641645
Kind Code:
B2
Application Number:
JP7542172A
Publication Date:
September 29, 1981
Filing Date:
July 26, 1972
Export Citation:
International Classes:
C01B17/90; B01J45/00; C02F1/42; C08G12/00; C08G12/40
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