专利检索 ap:("SANYO CHEMICAL IND LTD" OR "TAIHEIYO CEMENT CORP") AND inv:"TANAKA SATOSHI" 第 1 页

1.

发明公开
CEMENT ADDITIVE, AND CONCRETE COMPOSITION AND STRUCTURE BOTH CONTAINING THE SAME 审中-公开
标题翻译：水泥添加剂，水泥组合物和结构均包含

公开(公告)号：EP1160219A4

公开(公告)日：2003-08-20

申请号：EP00981787

申请日：2000-12-15

申请人： SANYO CHEMICAL IND LTD , TAIHEIYO CEMENT CORP

发明人： SHIMOYAMA YOSHIHIDE , AYATA TAKASHI , TANAKA SATOSHI , HONDO FUMIAKI

IPC分类号： C04B24/32 , C04B28/02 , C04B40/00 , C04B24/02

CPC分类号： C04B40/0039 , C04B24/32 , C04B28/02 , C04B2111/2076 , C04B2103/302 , C04B24/02

摘要： A cement additive composition for concrete surface discoloration prevention which comprises a combination of a cement additive (a) and a water reducing agent (b) in an (a)/(b) ratio of (5-99.5)/(95-0.5) by weight and in which the additive (a) comprises a mixture of compounds represented by the following general formula (1): R1O(AO)n1H which comprise compounds wherein n1 is each of the integers of from 2 to 6 in a total amount of 40 wt.% or more based on the additive (a), the average of n1 is 1.5 to 10, and the additive (a) has a molecular weight distribution, Mw/Mn, of 1.05 or higher and a Z-average molecular weight, Mz, of 200 or higher. It is effective in preventing the surface of a concrete from discoloring. (In the formula, R1 is C1-6 alkyl; A is ethylene and/or propylene; and n1 is a number of 1 or larger.)