Process for producing alumina fiber or alumina-silica fiber

Details Process for producing alumina fiber or alumina-silica fiber Process for producing alumina fiber or alumina-silica fiber

1975-08-20

1978-07-18

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 65, 106 734, 264DIG19, 264 65, C01F 702, C04B 3564

Patent

active

041016157

ABSTRACT:
A process for producing alumina fiber or alumina-silica fiber having excellent mechanical strength and heat resistance, comprising (i) spinning a solution of at least one polyaluminoxane or of a mixture of at least one polyaluminoxane and one or more kinds of silicon-containing compounds in an organic solvent, (ii) hydrolyzing the resulting precursor fiber, and then (iii) calcining the hydrolyzed fiber, said polyaluminoxane being one or more kinds of polymers or copolymers which mainly consist of the structural units of the formula: ##STR1## wherein the pendant groups Y are one or more kinds of groups selected from the group consisting of an alkyl, an alkoxy, an acyloxy, phenyl and phenoxy, and which may be partially a halogen or hydroxy.

REFERENCES:
patent: 2915475 (1959-12-01), Bugosh
patent: 2944914 (1960-07-01), Bugosh
patent: 3031418 (1962-04-01), Bugosh
patent: 3231540 (1966-01-01), Vanderbilt
patent: 3634112 (1972-01-01), Yavorsky et al.
patent: 3846527 (1974-11-01), Winter et al.
patent: 3950478 (1976-04-01), Kenworthy et al.
patent: 3992498 (1976-11-01), Morton et al.
patent: 4010233 (1977-03-01), Winter et al.

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