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. 14, 1991
Filed:
Nov. 13, 1989
Applicant:
Inventor:
Robert F Harris, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07G / ;
U.S. Cl.
CPC ...
558260 ; 560115 ; 560133 ; 560135 ; 560136 ; 560137 ; 560157 ; 560159 ; 560160 ; 560161 ; 560148 ; 560165 ; 560167 ; 558275 ; 558276 ; 558277 ; 558338 ; 558404 ; 558406 ; 558408 ; 558409 ; 558410 ;
Abstract
Poly(alkylene carbonate) monoahls and polyahls useful as nonionic surfactants and having a poly(alkylene carbonate) backbone are prepared by reacting an oligomeric poly(alkylene carbonate) polyahl with a compound having mono- or difunctional active hydrogen moieties, such as alcohols, carboxylic acids, mercaptans, amides, primary or secondary amines, or substituted phenols, optionally in the presence of a catalyst, under transesterification conditions.