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:
Mar. 15, 1994
Filed:
Dec. 03, 1992
Applicant:
Inventors:
Steven Rosenberg, Midland, MI (US);
George J Quarderer, Jr, Midland, MI (US);
Ashish Sen, Midland, MI (US);
Masaru Nakagawa, Ohtsu City, JP;
Timothy L Faley, Midland, MI (US);
Myrna Serrano, Midland, MI (US);
Yoshihiko Teramoto, Ohtsu City, JP;
Chieh-Chun Chau, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01F / ; D02G / ;
U.S. Cl.
CPC ...
264103 ; 264205 ; 26421116 ;
Abstract
Polybenzazole polymer dopes are spun through a spinneret having more than 2 per cm.sup.2, of orifices in relatively close proximity. The dope filaments formed, then pass through an air gap which has a temperature of 50.degree. to 100.degree. C. and a gas flow sufficient to uniformly reduce the temperature of the dope filaments. The filaments cool in the air gap and are then coagulated.