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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.:

US 9284408 B1

PDFFull Text
Date of Patent:
Mar. 15, 2016

Filed:

Jan. 14, 2015

Method for producing polyalkylene glycol derivative with narrow molecular weight distribution, and acetal group-containing alcohol compound for use therein and alkali metal salt thereof

Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Yuki Suka, Joetsu, JP;

Yuji Harada, Joetsu, JP;

Takeru Watanabe, Joetsu, JP;

Osamu Watanabe, Joetsu, JP;

Assignee:

Shin-Etsu Chemical Co., Ltd., Tokyo, JP;

Attorney:

Myers Bigel & Sibley

Primary Examiner:

Terressa Boykin

Int. Cl.
CPC ...
C08G 65/32 (2006.01); C08G 65/26 (2006.01); C07C 43/315 (2006.01); A61K 47/48 (2006.01); C08G 65/322 (2006.01); C08G 65/325 (2006.01); C07C 217/08 (2006.01); C08L 71/02 (2006.01);
U.S. Cl.
CPC ...
C08G 65/2639 (2013.01); A61K 47/48215 (2013.01); C07C 43/315 (2013.01); C07C 217/08 (2013.01); C08G 65/322 (2013.01); C08G 65/3255 (2013.01); C08G 2650/44 (2013.01);
Abstract

A method for producing a narrow molecular weight distribution polyalkylene glycol derivative having an amino group at an end is provided and allows for polymerization of ethylene oxide under mild conditions with suppressed occurrence of diol polymer impurities includes at least the steps of polymerizing ethylene oxide by using a compound represented by the following general formula (2) and converting a polymer end to R:

Find Patent Forward Citations

Suka, Yuki. (2016). Method for producing polyalkylene glycol derivative with narrow molecular weight distribution, and acetal group-containing alcohol compound for use therein and alkali metal salt thereof (U.S. Patent No. 9284408). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9284408

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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