PROBLEM TO BE SOLVED: To provide a dispersant for dispersing sea shell powder which homogeneously disperses sea shell powder which is obtained by grinding and burning sea shells and to provide a sea shell powder dispersion in which sea shell powder is dispersed by using the dispersant for dispersing sea shell powder.SOLUTION: Sea shell powder, which is obtained by grinding and burning sea shells, is dispersed in water by using the dispersant for dispersing sea shell powder which contains a nonionic long-chain hydrophilic part, which is represented by the formula, and an adsorption part which is adsorbed on sea shell powder.COPYRIGHT: (C)2012,JPO&INPIT【課題】貝殻を粉砕および焼成することにより得られる貝殻粉末を、均一に分散させることができる貝殻粉末分散用分散剤、および、その貝殻粉末分散用分散剤を用いて貝殻粉末を分散させた貝殻粉末分散液を提供すること。【解決手段】貝殻を粉砕および焼成することにより得られる貝殻粉末を、下式のようなノニオン性の長鎖親水部と、貝殻粉末に吸着する吸着部とを含有する貝殻粉末分散用分散剤を用いて、水中に分散させる。【選択図】なし
