Abstract: A borehole cement slurry additive that is capable of suppressing the generation of free water from cement slurries in any environment, whether cold regions, mild regions, or hot regions; and a method for storing the same. The borehole cement slurry additive contains: an aqueous dispersion of silica having an average particle size of 3-200 nm as determined via dynamic light scattering; and a compound having an alcoholic hydroxyl group as a dispersion stabilizer, the compound being included in an amount of 1-30 mol per 1,000 g dispersion medium in the aqueous silica dispersion.

Abstract: The present invention relates to a resin composition which gives a resin product with a low hygroscopic property, an adhesive for connecting a circuit member and a circuit board, and provides a resin composition, an adhesive for connecting a circuit member and a circuit board comprising (A) a polyhydroxy polyether resin represented by the formula (I): wherein R1 to R8 each represent H, C1-4 alkyl group, C2-5 alkenyl group, C1-4 hydroxyalkyl group or halogen atom; Ra represents H or C1-2 alkyl group; Rb represents C2-13 alkyl group; and n is a recurring number, or the following formula (II): wherein R9 to R12 each represent H, C1-6 alkyl group, C1-6 hydroxyalkyl group or halogen atom; Rc to Rf each represent H, C1-6 alkyl group, cyclohexyl group, aryl group, aralkyl group or halogen atom; and m is a recurring number, and (B) a three dimensionally cross-linkable resin.

Abstract: The present invention relates to a resin composition which gives a resin product with a low hygroscopic property, an adhesive for connecting a circuit member and a circuit board, and provides a resin composition, an adhesive for connecting a circuit member and a circuit board comprising (A) a polyhydroxy polyether resin represented by the 1