ALUMINUM PHOSPHATES, COMPOSITIONS COMPRISING ALUMINUM PHOSPHATE, AND METHODS FOR MAKING THE SAME

WIPO Patent Application WO/2013/158409

A3

APs are made by binary condensation via base-to-acid or acid-to-base routes. In the base-to-acid route, an aluminum hydroxide slurry is added to phosphoric acid that reacts to produce an aluminum phosphate condensate. In the acid-to-base route, phosphoric acid is added to an aluminum hydroxide slurry that reacts to produce an aluminum phosphate condensate. In an alternative base-to-acid route, an acidic aluminum phosphate is first made by adding phosphoric acid to a first amount of aluminum hydroxide slurry, and such acidic aluminum phosphate is added to a remaining amount of aluminum hydroxide slurry to react and produce an aluminum phosphate condensate. The reactions can be controlled to form an in-situ layered aluminum phosphate. Soformed APs can be amorphous, crystalline, or a combination thereof, and have low oil absorption and surface area, making them particularly useful in such end-use applications as extender pigments in coating compositions, replacing up to 70wt% of TiO2.

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FOSCANTE RAYMOND E (US)
JOHNSON NEIL MAYNARD (US)
TAVOLARA YUCEL BURDURLU (US)
HARLESS DOUGLAS MALCOLM (US)
MICHA-SCHAMA MELANIE ASTRID (US)

PCT/US2013/035770

March 13, 2014

April 09, 2013

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BUNGE AMORPHIC SOLUTIONS LLC (US)

C09C1/40; C01B25/36; C01B25/40

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LANGTON, Grant T. et al. (P.O. Box 2207Wilmington, Delaware, US)

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