C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
117/202, 400/904
C08K 3/00 (2006.01) C04B 20/10 (2006.01) C04B 28/02 (2006.01) C08L 33/02 (2006.01)
Patent
CA 1323721
ABSTRACT The invention is concerned with a lightweight aggregate which is inhibited for water absorption by pressure. The aggregate is treated with an aqueous polymer dispersion having a viscosity permitting the dispersion to enter fine pores in a surface layer of the aggregate by absorption, the dispersion so entered in the pores being thickenable by rise of pH and when so thickened having a viscosity of not less than 50 times the viscosity before thickening.
550248
Ito Koichi
Iwashimizu Takashi
Nakase Tetsuo
Sakaue Kunio
Yonezawa Toshio
Sanyo Chemical Industries Ltd.
Swabey Ogilvy Renault
Takenaka Komuten Co. Ltd.
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