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. 26, 1991
Filed:
Jul. 07, 1988
Applicant:
Inventors:
Kazufumi Ogawa, Hirakata, JP;
Hideharu Tamura, Katano, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264 22 ; 264104 ; 264298 ; 522-3 ; 522182 ; 526285 ;
Abstract
Disclosed in a method for producing polydiacetylene of superhigh molecular weight (i.e., a superlong conjugated polymer) having continuous conjugated bands and a straight chain by spreading an organic solvent containing diacetylene derivative on a water surface, gathering up by a barrier, and photopolymerizing the derivative while compressing at a constant surface pressure. Also disclosed is a method for producing polydiacetylene comprising the step of improving the arrangement by applying a direct-current field in a specified direction at the time of spreading and collecting the diacetylene derivative molecules.