Bunge Amorphic Solutions LLC

Universidade Estadual De Campinas

Bunge Fertilizantes S.a.

Other

Universidade Estadual De Campinas-Unicamp.

Fernando Galembeck

Raymond E Foscante

João De Brito

Ádamo César Mastrângelo Amaro Dos Santos

Renato Rosseto

Cesar Augusto Sales Barbosa

Melissa Braga

Joäo De Brito

Joao De Brito

ÁDamo César MASTRÂNGELO Amaro Dos Santos

The present disclosure relates to a process to produce aqueous dispersions of graphene stabilized by cellulose, offering an alternative to the current methods of dispersion of graphene. The present process provides the advantages that it uses biodegradable cellulose compatible with the environment and can be used in industrial processes in alkaline medium or in the absence of alkali; and when graphene is stabilized with cellulose in alkaline medium it becomes unstable when in contact with natural waters, thus precipitating and being easily removed or concentrated. In other embodiments, solids obtained by drying of the dispersions, once dried, can be redispersed in aqueous alkaline solution.

Method for producing stable graphene, graphite and amorphous carbon aqueous dispersions

An aluminum phosphate composition comprising aluminum phosphate, aluminum polyphosphate, aluminum metaphosphate, or a mixture thereof. The composition may be characterized by, when in powder form, having particles wherein some of the particles have at least one or more voids per particle. In addition, the composition is characterized by exhibiting two endothermic peaks in Differential Scanning Calorimetry between about 90 degrees to about 250 degrees Celsius. The composition is also characterized by, when in powder form, having a dispersibility of at least 0.025 grams per 1.0 gram of water. The composition is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate, polyphosphate or metaphosphate based product at an elevated temperature. The composition is useful in paints and as a substitute for titanium dioxide.

Aluminum phosphate, polyphosphate, and metaphosphate particles and their use as pigments in paints and method of making same

An aluminum phosphate or polyphosphate-based pigment product is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate based product at an elevated temperature, wherein the process is substantially free of an organic acid. The aluminum phosphate or polyphosphate-based pigment is amorphous. The amorphous aluminum phosphate or polyphosphate characterized by a bulk density of less than 2.30 grams per cubic centimeter and a phosphorus to aluminum mole ratio of greater than 0.8. The composition is useful in paints and as a substitute for titanium dioxide.

Aluminum phosphate or polyphosphate particles for use as pigments in paints and method of making same

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.

Aluminum phosphate or polyphosphate compositions

A process for the preparation of amorphous aluminum phosphate or polyphosphate-based pigment by reacting aluminum phosphate and sodium aluminate is provided. The amorphous aluminum phosphate or polyphosphate is characterized by a skeletal density of less than 2.50 grams per cubic centimeter and a phosphorus to aluminum mole ratio of greater than 0.8. In one embodiment, the composition is useful in paints as a substitute for titanium dioxide.

Preparation of aluminum phosphate or polyphosphate particles

Preparation of a coating composition comprising amorphous aluminum phosphate particles

Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same

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Campinas, Brazil

Fernando Galembeck