公开(公告)号：US3931083A

公开(公告)日：1976-01-06

申请号：US437934

申请日：1974-01-30

申请人： Isamu Sasaki ,  Iwao Kojima ,  Fujio Namigata ,  Yoku Ashigame ,  Hiroshi Mihara

发明人： Isamu Sasaki ,  Iwao Kojima ,  Fujio Namigata ,  Yoku Ashigame ,  Hiroshi Mihara

IPC分类号： C04B24/22 ,  C04B7/02 ,  C08G8/18

CPC分类号： C04B24/22

摘要： Water-reducing additives for ceramic material, and especially for cement paste, mortar or concrete, which comprise a phenolic compound having a sulfo radical or a sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said phenolic compound molecules are substituted by atoms of sodium, potassium or calcium.