Alumina hydrate particle, alumina hydrate particle...

Details Alumina hydrate particle, alumina hydrate particle... Alumina hydrate particle, alumina hydrate particle...

2005-05-10

2005-05-10

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

C428S329000, C428S315700, C428S032140, C428S032150, C423S084000, C423S119000, C423S312000

Reexamination Certificate

active

06890647

ABSTRACT:
Highly transparent alumina hydrate particles having a large pore volume, having a pore diameter which falls in a specified range and, when formed into a high-concentration dispersion sol, exhibiting a low viscosity are provided. Alumina hydrate particles having a composition represented by the general formula xM2O.y(NH4)2O.Al2O3.zH2O (2×10−4≦x≦25×10−4, 0.1×10−4≦y≦20×10−4, 0.6≦z≦2.5, M represents an alkali metal; when the alkali metal is in the form of M2O, x is the number of moles thereof per mol of Al2O3; when ammonia is in the form of (NH4)2O, y is the number of moles thereof per mol of Al2O3; and z is the number of moles of hydration water (H2O) per mol of Al2O3), the alumina hydrate particles having an average particle diameter of 0.02 to 0.2 μm, a total pore volume of 0.5 to 1.5 ml/g, and a volume of pores whose diameter is from 15 to 30 nm ranging from 0.3 to 1.0 ml/g.

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http://w1.cabot-corp.com glossary terms.*
Patent Abstracts of Japan, JP 03-024906, published Feb. 1, 1991, entitled “Molding Method of Concrete Molded Plate and Concrete Molded Plate”, Inventor: Matsuura Katsuharu.
Patent Abstracts of Japan, JP 10-206284, published Aug. 7, 1998, entitled “Test Method for Component for Vehicle”, inventor: Purakashu T Saza.

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