摘要:
A stabilizing agent for beer comprising a specific amorphous silica composition having a specific surface area of from 100 to 600 m 2 /g, a porous volume of 1 to 2 cc/g, and an aqueous suspension thereof having a pH of from 4 to 6.2 and a zeta-potential of negative polarity, of at least 20 mV is useful in removing haze from beer.
摘要:
An oxide or hydroxide mixture or coprecipitate having a three-component oxide compositn comprising 5 to 45 mole% of SiO 2 , 35 to 65 mole% of ZnO and 0 to 60 mole% of Al 2 O 3 is heated in the presence of water to form a crystal of the fraipontite type. The obtained synthetic mineral has a fraipontite type crystal structure and has a high whiteness and a large specific surface area. For example, this synthetic mineral is valuable as a color developer for a leuco dye.
摘要:
A decolorized oyster extract concentrate is formed by an adsorption purification treatment using a specific inorganic magnesium compound and a concentration treatment. Coloring components can be effectively removed without substantial reduction in taste and nutrient content. The decolorized oyster extract concentrate is very valuable as a seasoning or health food.
摘要:
A crystalline zinc silicate mineral of the sauconite, hemimorphite or willemite type is prepared by subjecting an acid-treated product of a clay mineral and an oxide or hydroxide of zine or a compound capable of forming this oxide or hydroxide under reaction conditions to a hydrothermal treatment. This crystalline zine silicate mineral has a fine and uniform particle size and is excellent in the pigmenting characteristics.
摘要:
Particulate material suitable for use as a filler for the heat-sensitive recording layer of heat-sensitive recording paper comprises finely divided amorphous silica having a BET specific surface area of 10 to 100 m 2 /g and a bulk density of 0.14 to 0.30 g/cc, said finely divided amorphous silica having such a secondary particle size distribution that secondary particles having a size smaller than 4 µm, as measured by the centrifugal precipitation method, constitute at least 90% by weight of the total particles. A composite filler for the heat-sensitive recording layer of heat-sensitive recording paper comprises amorphous silica having the same BET specific surface area and bulk density and such a secondary particle size distribution that secondary particles having size smaller than 4 pm, as measured by the centrifugal precipitation method, constitute at least 70% by weight of the total particles, and fine particles of amino resin obtained by condensing substantially equimolar amounts of a functional amino group-containing component and a formaldehyde component in the presence of a catalyst and which has an oil absorption of 20 to 90 mi/100 g and a specific surface area smaller than 20 m 2 /g, at a weight ratio of amorphous silica: amino resin particles of from 90:10 to 10:90.