Dope for polyurethane or aromatic polyamide article, and use...

C - Chemistry – Metallurgy – 01 – F

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Details

C01F 7/00 (2006.01) C01F 5/00 (2006.01) C08J 5/18 (2006.01) C08K 3/26 (2006.01) C08K 9/00 (2006.01) C08L 75/04 (2006.01) C08L 77/00 (2006.01) D01F 1/10 (2006.01) D01F 6/60 (2006.01) D01F 6/70 (2006.01) D01F 6/90 (2006.01) D01F 6/94 (2006.01)

Patent

CA 2385361

A dispersion comprising hydrotalcite compound particles having (1) an average secondary particle diameter of 0.1 to 3 µm as measured by a laser beam diffraction scattering method, (2) a specific surface area of 0.5 to 10 m2/g as measured by a BET method, and (3) a platy crystal particle shape, and an organic polar solvent; and a dope for polyurethane or aromatic polyamide article. The present invention has made it possible to provide hydrotalcite compound particles having superior affinity to and dispersibility in organic polar solvents, and a dope having the above particles dispersed therein uniformly, used for production of polyurethane or aromatic polyamide article.

Un liquide de dispersion contient un solvant polaire organique et des particules d'un composé d'hydrotalcite dotées (1) d'un second diamètre particulaire moyen compris entre 0,1 et 3 mu m mesuré par le procédé de diffusion par diffraction de lumière laser, (2) d'une zone superficielle spécifique comprise entre 0,5 et 10 m<2>/g mesurée par le procédé BET, et des particules du composé d'hydrotalcite possédant des grains de cristal de forme plate. Ledit liquide renferme aussi une matière première liquide servant à produire un polyuréthane formé ou un polyamide aromatique contenant le liquide de dispersion. Les particules du composé d'hydrotalcite présentent une affinité au solvant polaire organique et une dispersibilité dans ledit solvant, qui sont excellentes. La matière première liquide de production d'un polyuréthane formé ou d'un polyamide aromatique contient les particules du composé d'hydrotalcite qui sont dispersées de manière uniforme.

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