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:
Sep. 20, 2011
Filed:
Feb. 19, 2007
Applicants:
Masanori Iwazumi, Omuta, JP;
Nobuo Kawato, Kurume, JP;
Hidetoshi Hayashi, Omuta, JP;
Mamoru Tanaka, Omuta, JP;
Seiichi Kobayashi, Omuta, JP;
Inventors:
Masanori Iwazumi, Omuta, JP;
Nobuo Kawato, Kurume, JP;
Hidetoshi Hayashi, Omuta, JP;
Mamoru Tanaka, Omuta, JP;
Seiichi Kobayashi, Omuta, JP;
Assignee:
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/22 (2006.01); C08K 5/521 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an internal mold release agent for the production of polythiourethane optical materials, which is obtained by mixing an acidic phosphate ester compound and at least one metal selected from the group consisting of Zn, Cu, Fe, Ga, Bi, Al and Zr. The internal mold release agent for the production of polythiourethane optical materials contains the metal in an amount of 0.01 to 20 weight %.