Aluminum phosphate or polyphosphate compositions prior...

C - Chemistry – Metallurgy – 09 – C

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C09C 1/40 (2006.01) C01B 25/36 (2006.01) C01B 25/40 (2006.01) C08K 3/32 (2006.01) C09D 5/00 (2006.01) C09D 7/00 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2715009

Slurry composition comprising amorphous aluminum phosphate, polyphosphate orthophosphate, metaphosphate and/or combination thereof and a dispersant are described. In certain embodiments, the polyphosphate orthophosphate and/or metaphosphate concentration is about 40 to about 70 weight % and the dispersant concentration is less than about 3.5 weight % based on the total weight of the slurry. In one embodiment, the composition is useful in paints, varnishes, printing inks, papers and plastics. The compositions can be used as a substitute for titanium dioxide in various applications.

La présente invention concerne une composition se présentant sous la forme d'une suspension et comprenant du phosphate, du polyphosphate, de l'orthophosphate, du métaphosphate d'aluminium amorphe et/ou une combinaison de ceux-ci, ainsi qu'un dispersant. Dans certains modes de réalisation, la concentration en polyphosphate, orthophosphate et/ou métaphosphate est d'environ 40 à environ 70 % en poids et la concentration en dispersant est inférieure à environ 3,5 % en poids sur la base du poids total de la suspension. Dans un mode de réalisation, la composition est utilisée dans des peintures, vernis, encres d'impression, papiers et matières plastiques. Ces compositions peuvent être utilisées en tant que substitut du dioxyde de titane dans diverses applications.

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