Material for imparting thixotropy and pasty resin composition

Details Material for imparting thixotropy and pasty resin composition Material for imparting thixotropy and pasty resin composition

C - Chemistry, Metallurgy

01

F

C01F 11/18 (2006.01) C09C 1/02 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2482623

Surface-treated calcium carbonate characterized by giving, upon analysis by the method of mercury penetration, a void diameter distribution curve which has a peak for the most probable void diameter at smaller than 0.03 ~m and has a most probable void volume of 0.05 to 0.5 cm3/g; and a pasty resin composition containing the surface-treated calcium carbonate. The calcium carbonate preferably comprises one obtained by surface-treating calcium carbonate having a BET specific surface area of 10 to 100 m2/g with an unsaturated fatty acid (A) and a saturated fatty acid (B).

L'invention concerne un carbonate de calcium traité en surface, caractérisé en ce qu'il donne, lorsqu'on l'analyse à l'aide d'un procédé par pénétration de mercure, une courbe de distribution des diamètres de vides présentant un pic pour le diamètre de vide le plus probable à moins de 0,03 µm, et un volume de vide le plus probable compris entre 0,05 et 0,5 cm?3¿/g ; et une composition de résine pâteuse contenant ce carbonate de calcium traité en surface. Le carbonate de calcium est de préférence obtenu par traitement en surface d'un carbonate de calcium présentant une surface active spécifique BET comprise entre 10 et 100 m?2¿/g, à l'aide d'un acide gras insaturé (A) et d'un acide gras saturé (B).

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