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:
Dec. 10, 1996
Filed:
Nov. 07, 1995
Satoshi Uchida, Niigata-ken, JP;
Akira Yamamoto, Gunma-ken, JP;
Ikuo Fukui, Niigata-ken, JP;
Mikio Endo, Niigata-ken, JP;
Hiroshi Umezawa, Niigata-ken, JP;
Shigehiro Nagura, Niigata-ken, JP;
Tohru Kubota, Niigata-ken, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a novel organosilicon-containing derivative of pullulan of which an organopolysiloxane moiety having a silethylene linkage is bonded to the glucose residue of pullulan through a urethane linkage. Different from conventional organopolysiloxane-modified pullulans, the inventive derivative is stable against attack of water and exhibits unique properties as a combination of the properties inherent in pullulan and in silicones. The organosilicon-containing pullulan of the invention can be easily prepared under mild reaction conditions by reacting an isocyanato group-containing organopolysiloxane with the glucosic hydroxy groups of pullulan.