公开(公告)号：EP0754656A4

公开(公告)日：1997-05-28

申请号：EP96901948

申请日：1996-02-07

申请人： DAICEL HUELS LTD

发明人： IKEMOTO YOSHIYUKI ,  IKUTA TORU

IPC分类号： B44C1/10 ,  B44C1/22 ,  B44C5/04 ,  C04B24/26 ,  C04B24/28 ,  C04B41/53 ,  C04B24/04 ,  B28B1/14 ,  B28B11/08 ,  C04B103/24

CPC分类号： C04B41/009 ,  B44C1/105 ,  B44C1/22 ,  B44C5/0438 ,  C04B24/26 ,  C04B24/283 ,  C04B41/5323 ,  C04B2103/20 ,  C04B2103/22 ,  Y10T428/28 ,  Y10T428/2852 ,  Y10T428/31786 ,  Y10T428/31794 ,  C04B28/02 ,  C04B41/4513 ,  C04B41/4511

摘要： A cement setting retarder comprising a polyester produced by the reaction of a polycarboxylic acid component containing a polycarboxylic acid having a main chain bearing 2 to 6 carbon atoms (e.g. maleic anhydride) with a polyol component containing a polyhydric alcohol bearing 2 to 4 carbon atoms or a condensate thereof. The unsaturated polyester is usable also as a polymerizable composition containing a polymerization initiator, a polymerizable vinyl monomer, and other components. The setting retarder may comprise particles of a cured unsaturated polyester. A setting retarder sheet can be formed by coating or impregnating a base sheet with a composition containing the retarder and a pressure-sensitive adhesive. It is possible to form patterns on the surface of a concrete product or to conduct exposed-aggregate finish thereon by forming given patterns in the form by using the retarder or sheet, placing a mortar composition thereon, and washing the surface of a set concrete to thereby expose an unset mortar.