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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.:

US 5025082 B1

PDFFull Text
Date of Patent:
Jun. 18, 1991

Filed:

Aug. 18, 1989

Aromatic polyester, aromatic polyester-amide and processes for producing

Applicant:
Inventors:

Osamu Kishiro, Atsugi, JP;

Hiroshi Kamata, Yokohama, JP;

Hideko Sakai, Tokyo, JP;

Assignee:

Mitsubishi Kasei Corporation, Tokyo, JP;

Attorneys:

Conlin; David G.

Linek; Ernest V.

Primary Examiner:

Morton Foelak

Assistant Examiner:

T Mosley

Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528190 ; 528176 ; 528183 ; 528184 ; 528185 ; 528193 ; 528194 ;
Abstract

The aromatic polyester and aromatic polyester-amide of the present invention have an excellent heat resistance (soldering resistance) and are excellent in fluidity, and therefore, excellent in moldability, because they show liquid crystallinity in a molten state. In view of mechanical characteristics, the aromatic polyester and aromatic polyester-amide of the present invention have a high modulus of elasticity and are excellent in mechanical strength. In addition, the aromatic polyester and aromatic polyester-amide of the present invention have an advantage that they can be molded at a temperature of 350.degree. C. or below, especially, 320.degree. C. or below. The aromatic polyester and aromatic polyester-amide of the present invention have utility in injection molded articles, films, fibers, etc., due to the above properties thereof. In addition, the aromatic polyester and aromatic polyester-amide of the present invention become molten state at a temperature of 320.degree. C. or below, therefore, the aromatic polyester and aromatic polyester-amide can be drawn out from a reaction vessel by application of pressure or by gravity after completion of polymerization, when the polymer is produced by melt polymerization method. This is another advantage of the present invention.

Find Patent Forward Citations

Kishiro, Osamu. (1991). Aromatic polyester, aromatic polyester-amide and processes for producing (U.S. Patent No. 5025082). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5025082

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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