Tungstic oxide-stannic oxide composite sol and method of prepari

Details Tungstic oxide-stannic oxide composite sol and method of prepari Tungstic oxide-stannic oxide composite sol and method of prepari

1991-11-21

1993-02-23

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Inorganic materials only containing at least one metal atom

10628719, 106479, 106441, 106450, 106455, C09D 100

Patent

active

051886677

ABSTRACT:
An aqueous sol of colloidal particles of tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.2) composite having a particle size of from 2 to 7 millimicrons is prepared by blending an aqueous solution of tungstic acid and an aqueous solution of an stannate in a weight ratio of from 0.5 to 100 as WO.sub.3 /SnO.sub.2. Where the WO.sub.3 -SnO.sub.2 composite sol in an amount of from 2 to 100 parts by weight as the total of WO.sub.3 and SnO.sub.2 is blended with a sol of a 3- to 5 valent metal oxide having a particle size of from 4 to 50 millimicrons in an amount of 100 parts by weight as the metal oxide, a modified metal oxide sol of colloidal particles having a size of 4.5 to 60 millimicrons as surface-coated with the tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.5) composite colloidal particles is prepared.

REFERENCES:
patent: 3634286 (1972-01-01), Yates
patent: 5094691 (1992-03-01), Watanabe et al.

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