Document Type and Number:
Japanese Patent JPS5247431
Kind Code:
B2
Application Number:
JP8603672A
Publication Date:
December 02, 1977
Filing Date:
August 28, 1972
Export Citation:
International Classes:
B01D17/05; B01D21/01; C02F1/52; C02F1/56; C02F1/58; C09K23/52; C11D1/66