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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 4731095 B1

PDFFull Text
Date of Patent:
Mar. 15, 1988

Filed:

Sep. 16, 1985

Nitrogen containing copolymers useful as additives for lowering the

Applicant:
Inventors:

Jacques Garapon, Lyons, FR;

Bernard Sillion, Rocquencourt, FR;

Bernard Damin, Oullins, FR;

Robert Leger, Grigny, FR;

Assignees:

Institut Francais du Petrole, Rueil-Malmaison, FR;

Elf France, Paris, FR;

Attorney:

Millen & White

Primary Examiner:

William R Dixon, Jr

Assistant Examiner:

Margaret B Medley

Int. Cl.
CPC ...
C10L / ; C10L / ;
U.S. Cl.
CPC ...
44 62 ; 44 70 ; 44 71 ; 44 72 ; 252 / ; 5253276 ; 5253295 ;
Abstract

Copolymers with nitrogen groups are used as additives to lower the cloud point and improve the filterability limit temperature and the pour point of middle distillates such as gas oils. They are obtained by reacting a compound having a primary amine group with a copolymer comprising 15 to 40% of recurrent units form a linear .alpha.-olefin, 20 to 70% of recurrent units form and .alpha.,.beta.-unsaturated dicarboxylic compound and 15 to 45% of recurrent units form an alkyl ester of unsaturated monocarboxylic acid.

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Garapon, Jacques. (1988). Nitrogen containing copolymers useful as additives for lowering the (U.S. Patent No. 4731095). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4731095

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