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:
Jan. 21, 1986
Filed:
Jul. 16, 1982
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525101 ; 55158 ; 55186 ; 525106 ; 525446 ; 525453 ; 525474 ; 525130 ; 525189 ; 525456 ;
Abstract
A selective gas-permeable film comprising a crosslinked copolymer product of a bifunctional polyorganosiloxane and a mixture of a styrene polymer having an aromatic ring at the side chain thereof, a phenolic polymer having an aromatic ring at the main chain thereof or an addition polymer of a phenolic compound and a phenyl ether compound joined through methylene groups and a polymer having functional end hydroxyl groups. Alternatively, the copolymer product may be of the bifunctional polyorganosiloxane and the addition polymer alone.