Manufacturing process for hollow microspheres

Details Manufacturing process for hollow microspheres Manufacturing process for hollow microspheres

1983-03-23

1983-12-20

Lesmes, George F.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

264 13, 264 15, 428402, 428325, 521 56, 521 60, C04B 3100

Patent

active

044215622

ABSTRACT:
More perfect, less porous hollow microspheres can be prepared by spray-drying dispersions of alkali metal silicate and "polysalt" that contain certain organic liquids. The organics are water-miscible and have boiling points of 100.degree. C. or more. The solvent is added just prior to spray drying and the resulting product has fewer cracks and/or holes.

REFERENCES:
patent: 3794503 (1974-02-01), Netting
patent: 3796777 (1974-03-01), Netting
patent: 3888957 (1975-06-01), Netting
patent: 3896196 (1975-07-01), Dickey
patent: 4049593 (1977-09-01), Sato
patent: 4127622 (1978-11-01), Watanabe et al.
patent: 4361624 (1982-11-01), Spivack

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