PATENTES

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    SCHUMACHER, H. C.RIPPEL, M. M. . Process for obtaining solid nanocomposite, useful in e.g. gaskets and sealants, comprises an electrolytic coagulation of polymer latex and an aqueous dispersion containing non-modified solid layered silicate, 2009. País: Estados Unidos. Natureza: . Número do registro: WO2009015453-A2. Data de depósito: 05/02/2009. Resumo: Title: Process for obtaining solid nanocomposite, useful in e.g. gaskets and sealants, comprises an electrolytic coagulation of polymer latex and an aqueous dispersion containing non-modified solid layered silicate Patent Number(s): WO2009015453-A2; WO2009015453-A3; BR200706080-A Assignee: UNICAMP UNIV ESTADUAL CAMPINAS; ORBYS DESENVOLVIMENTO TECNOLOGIA MATERIAIS LTDA Inventor(s): CAJON SCHUMACHER H; GALEMECK F; RIPPEL M M, et al. .

  • 47

    BRAGA, M.GALEMBECK, F.BARBOSA, C. A.BARBOSA, C. A. S. . Slurry, useful in paint, varnish, printing ink, paper and plastic, comprises amorphous aluminum phosphate particles and a dispersant e.g. borate dispersant or silicate dispersant, 2009. País: Estados Unidos. Natureza: . Número do registro: WO2009100510-A2. Data de depósito: 20/08/2009. Data de concessão: 20/09/2009. Resumo: Patent Number(s): WO2009100510-A2; US2009217841-A1 Inventor(s): BRAGA M, GALEMBECK F, SALES BARBOSA C A, BARBOSA C A S Patent Assignee(s) and Codes(s):UNICAMP UNIV ESTADUAL CAMPINAS (UNIC-Non-standard) BUNGE PARTICIPACOES E INVESTIMENTOS SA (BUNG-Non-standard) BPI BUNGE PARTICIPACOES&INVESTMENTOS (BPIB-Non-standard) Derwent Primary Accession Number: 2009-M82669 [59] Abstract: NOVELTY - Slurry comprises amorphous aluminum phosphate particles (40-70 wt.%) and a dispersant (3.5 wt.%). USE - The slurry is useful in a paint, varnish, printing ink, paper and plastic (claimed). ADVANTAGE - The slurry is a cost-effective composition of amorphous aluminum phosphate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a paint comprising a solvent and the slurry; and (2) a process for preparation of a stable aluminum phosphate slurry composition comprising: mixing a stock slurry comprising amorphous aluminum phosphate (30 wt.%), amorphous aluminum phosphate powder and a dispersant; and stirring with a disperser at stirring velocity of 500-2000 rpm. Technology Focus/Extension Abstract: TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The slurry has a viscosity of 300-3500 (preferred 900-1150) cPs measured at 100 s-1 shear rates. Preferred Components: The dispersant concentration is 0.25, 0.5, 0.75 or 1 wt.% based on the total weight of the slurry. The aluminum phosphate concentration is 50-60 (preferably 51) wt.% based on the total weight of the slurry. The dispersant is a phosphate dispersant, borate dispersant, silicate dispersant, aluminate dispersant and/or anionic or non-ionic surfactant, preferably tetrasodium pyrophosphate, sodium hexametaphosphate, pentasodium triphosphate, trisodium phosphate dodecahydrate, tetrapotassium pyrophosphate and/or sodium potassium triphosphate. The aluminum phosphate particles are characterized by a skeletal density of 1.73-2.40 g/cm3. The aluminum phosphate particles are charact.

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    Galembeck, FernandoBraga, MelissaBARBOSA, C. A. S. . ALUMINUM PHOSPHATE SLURRY, 2009. Categoria: Produto e Processo. País: Estados Unidos. Natureza: Patente de Invenção. Número do registro: US2009217841. Data de depósito: 10/02/2009. Data de concessão: 12/02/2009. Resumo: 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..

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