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:
Jul. 23, 1991
Filed:
Jun. 01, 1990
Applicant:
Inventors:
Takao Kawaki, Tokyo, JP;
Makoto Kobayashi, Nagareyama, JP;
Osamu Aoki, Matsudo, JP;
Tatsuo Iwai, Tokyo, JP;
Yukifumi Goto, Kashiwa, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 75 ; 350409 ; 568 55 ;
Abstract
A novel sulfur-containing aromatic vinyl compound represented by the following general formula (I) ##STR1## wherein R.sub.1 represents an alkylene group having 1 to 3 carbon atoms and R.sub.2 represents an alkylene group having 2 to 8 carbon atoms, and the two bonds in the benzene ring are meta or para to each other. A curable composition comprising at least one of the said vinyl compounds, an isocyanate compound and a radical polymerization initiator. On heating, the composition gives a crosslinked polymer article useful as lenses.