PROCESS FOR PRODUCING INORGANIC FIBER

摘要

Inorganic fibers of superior tensile strength and modulus of elasticity, are obtained by spinning a spinning solution in an organic solvent of a polymetaloxane to form a precursor fiber which is then calcined, the polymetaloxane comprising 0.1 - 95 mole % of structural units of the general formula @ and 99.9 - 5 mole % of structural units of the general formula @ :

(wherein, M represents a trivalent or tetravalent metal atom, X1 represents an organic group which is the same as or different from

or represents hydrogen, halogen or a nitro group, X2 and X3 represent an organic group other than

Y represents an organic group, nitro group or halogen, m represents 0 or an integer from 1 to 5.)