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. 08, 2015
Filed:
Mar. 30, 2007
Masato Izume, Ibaraki, JP;
Takahiro Fukuhara, Ibaraki, JP;
Makoto Niwa, Ibaraki, JP;
Takanori Sannan, Tokyo, JP;
Shinya Tsuchida, Tokyo, JP;
Nobuyuki Kobayashi, Tokyo, JP;
Masato Izume, Ibaraki, JP;
Takahiro Fukuhara, Ibaraki, JP;
Makoto Niwa, Ibaraki, JP;
Takanori Sannan, Tokyo, JP;
Shinya Tsuchida, Tokyo, JP;
Nobuyuki Kobayashi, Tokyo, JP;
DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., Tokyo, JP;
Abstract
The present invention provides a process for producing silylated pullulan, which features reacting pullulan with N,O-bistrimethylsilylacetamide by using, as a reaction medium, only one of N-methyl-2-pyrrolidone and N-ethyl-2-pyrrolidone or a mixed solvent of both of them. Compared with conventional processes, the process according to the present invention can produce high-purity silylated pullulan simply, easily and efficiency.