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. 04, 1991
Filed:
Jan. 04, 1990
Applicant:
Inventor:
Zdravko P Jezic, Lake Jackson, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D03D / ;
U.S. Cl.
CPC ...
428224 ; 428221 ; 428288 ; 428364 ; 428903 ;
Abstract
A melt-blowing process for producing a fiber preferably a microfiber of a syndiotactic vinyl aromatic polymer, which comprises supplying a vinyl aromatic polymer having a high degree of syndiotacticity in a molten form from at least one orifice of a nozzle into a gas stream which attenuates the molten polymer into microfibers. Such microfibers are particularly useful in the field of high temperature filtration, coalescing and insulation.