The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1993
Filed:
Oct. 23, 1989
Mohammad A Zaidi, Monroeville, PA (US);
Leo A Vivola, New Kensington, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A method for making stock shapes from a composition which includes a liquid crystal polymer having a high crystallization temperature, the method including: (a) densifying the composition into a compact; and (b) processing the compact at one or more temperatures below the crystallization temperature using a moderate to high strain rate. For the liquid crystal polymer consisting essentially of p, p' biphenol, p-hydroxybenzoic acid and terephthalic acid monomers and sold under the trademark 'XYDAR.RTM.', a preferred embodiment includes heating the compact to one or more temperatures between about 400.degree.-650.degree. F.; and extruding the heated compact in the solid state through a uniform flow-type die at a strain rate of at least about 2 sec.sup.-1.