Surface-treated calcium carbonate and resin composition...

C - Chemistry – Metallurgy – 09 – C

Patent

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C09C 1/02 (2006.01) C09C 3/08 (2006.01)

Patent

CA 2498981

A surface-treated calcium carbonate, characterized in that it has been produced trough the surface treatment of calcium carbonate with a fatty acid based surface treating agent satisfying the following formula (a): (a) C 12 + C14 >= 85 (%) wherein C 12 represents the percentage of a fatty acid based surface treating agent having 12 carbon atoms and C 14 represents the percentage of a fatty acid based surface treating agent having 14 carbon atoms, and it satisfies the following formula (b): (b) Pv <= 90 (%) wherein Pv represents the percentage of the volume of precipitates in hexane (volume %). The surface-treated calcium carbonate can provide a resin composition which has slip resistance and slump resistance in good balance between them, in particular, exhibits excellent resistance to slip.

L'invention concerne un carbonate de calcium traité en surface, caractérisé en ce qu'il est produit par traitement de surface de carbonate de calcium avec un agent de traitement de surface à base d'acide gras, satisfaisant à la formule suivante : (a) C 12 + C14 = 85(%), dans laquelle C 12 représente le pourcentage d'un agent de traitement de surface à base d'acide gras et C14 représente le pourcentage d'agent de traitement à base d'acide gras ayant 14 atomes de carbone et satisfait à la formule suivante : (b) Pv = 90 (%), où Pv représente le pourcentage de volume de précipités en hexane ( % en volume). Le carbonate de calcium traité en surface peut donner lieu à une composition résineuse présentant un bon équilibre entre la résistance au glissement et la résistance à l'affaissement et notamment une excellente résistance au glissement.

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