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:
May. 15, 2001
Filed:
May. 07, 1998
Applicant:
Inventors:
Takashi Namba, Osaka, JP;
Yoshikazu Fujii, Hyogo, JP;
Takuya Saeki, Hyogo, JP;
Hiyora Kobayashi, Osaka, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 3/00 ; C07C 9/00 ; B01D 4/700 ;
U.S. Cl.
CPC ...
C09K 3/00 ; C07C 9/00 ; B01D 4/700 ;
Abstract
Disclosed herein are clathrate hydrate inhibitors and the method of inhibiting the formation, agglomeration, and deposition of clathrate hydrate using the inhibitors. The clathrate hydrate inhibitor comprises a macromolecular compound in which 3-15 membered ring pendant is connected to the polymer main chain via a specific spacer group such as homo- or co-polymer of (meth)acryloyl pyrrolidine, pyrrolidinocarbonylethyl (meth)acrylate, 2-oxo-pyrrolidino-ethyl (meth)acrylate, glyoxyloyl pyrrolidine, pyrrolidinocarbonyl aspartate.