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. 17, 1983
Filed:
Apr. 15, 1981
Applicant:
Inventors:
Billy M Culbertson, Worthington, OH (US);
Ann E Aulabaugh, Madison, WI (US);
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526266 ; 525113 ; 525114 ; 526262 ;
Abstract
Copolymers and terpolymers formed by reacting either 4,7-dihydro-1,3-dioxepins or 6,7-dihydro-1,3-dioxepins with maleic anhydride and/or a maleimide. The copolymers are characterized as linear, low molecular weight, water soluble alternating copolymers. These copolymers are useful as a water soluble polymer, as epoxy resin modifies and curing agents. The copolymers formed from 4,7-dihydro-1,3-dioxepins and maleic anhydride can be rearranged to form a poly (.gamma.-crotonlactone) having the following general formula: ##STR1##