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:
Feb. 20, 2001
Filed:
Dec. 22, 1998
Tuyoshi Asano, Yokohama, JP;
Noboru Takaesu, Yokohama, JP;
Yoshinori Nishikitani, Yokohama, JP;
Masaki Minami, Kawasaki, JP;
Nippon Mitsubishi Oil Corporation, Tokyo, JP;
Abstract
An ultraviolet absorbing material prepared by reacting (a) an aminosilane compound of general formula (1) or a derivative thereof wherein R,is C,-C,alkylene or —(CH,),—NH— (wherein m is an integer of 1 to 4); R,3 s are each independently hydrogen, hydroxyl, halogeno, C,-C,alkyl or C,-C,alkoxy, with the proviso that at least one of R,is C,-C,alkoxy; and n is an integer of 0 or above with (b) an ultraviolet absorber having a carboxyl group in the molecule in such a way as to form an amide linkage resulting from the above aminosilane compound or derivative thereof. This material can form an ultraviolet absorbing layer and is favorably applicable to ultraviolet-absorbing glass (ultraviolet absorbing plate), optical devices and light modulators.