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. 01, 1992
Filed:
Sep. 20, 1991
Applicant:
Inventor:
Thomas H Johnson, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C07C / ;
U.S. Cl.
CPC ...
44387 ; 44403 ; 560157 ; 560158 ; 560159 ;
Abstract
The present invention is directed to novel poly(olefin)-polyamine-N-substituted polycarbamates, useful for preventing or reducing deposits in engines having the formula I ##STR1## wherein 'n' is 2-8; R.sup.1 is a poly(olefin) chain having an average molecular weight of from about 500 to about 9900; R.sup.2 is an alkylene group containing 2 to 8 carbon atoms; R.sup.3 is independently a hydrogen atom, an alkyl group containing from 1 to 7 carbon atoms or --COOR.sup.5 with at least two of R.sup.4 being --COOR.sup.5 and wherein R.sup.5 is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms.