Process for producing orientation in mesophase pitch by rotational motion relative to a magnetic field and carbonization of the oriented mesophase
AssigneeUnion Carbide Corporation
InventorLeonard Sidney Singer
Life of this patent
Estimating the term…
Abstract
Mesophase pitches wherein the planes of the mesophase portions of the pitch are substantially aligned in a single parallel direction, and the c-axes of said planes are substantially aligned in a single parallel direction, are produced by subjecting a mesophase pitch in its molten state to rotational motion relative to a surrounding magnetic field about an axis perpendicular to the direction of that field.
Claims12
A process which comprises subjecting a mesophase pitch in its molten state to rotational motion relative to a surrounding magnetic field about an axis perpendicular to the direction of said field so as to subject the pitch to a diamagnetic force which acts to align the planes of the mesophase portions of said pitch parallel to the magnetic field direction and the c-axes of said planes parallel to the axis of rotation, said magnetic field being at least 1 kilogauss and the rate of rotation of the pitch being at least 1 rpm.
A mesophase pitch wherein the planes of the mesophase portions of the pitch are substantially parallel and the c-axes of said planes are substantially aligned in a single direction perpendicular to the planes.
Dependencies are inferred from the claim text.