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. 08, 2003
Filed:
Dec. 21, 1999
Yukio Nagasaki, Kitasoma-gun, JP;
Masao Kato, Tsukuba, JP;
Kazunori Kataoka, Kashiwa, JP;
Yasuo Sato, Inashiki-gun, JP;
Atsushi Harada, Matsudo, JP;
Daisuke Wakebayashi, Noda, JP;
Nano Carrier Co., Ltd., Chiba-ken, JP;
Abstract
The present invention provides a polymer obtained by polymerizing a mixture composed of a methacrylic ester monomer having an electron-donating group bonded to a specific site of its ester-forming residue (its alcohol moiety) and optionally a lactone or lactide, while using an alkali metal alcoholate as a polymerization initiator. Moreover, it also provides a process for preparing the polymer and polymer micelles formed from the polymer. Since the polymer has a functional group corresponding to the polymerization initiator and the aforesaid electron-donating groups (functional groups), it can perform a great variety of functions by taking advantage of these functional groups.