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:
Apr. 19, 1983
Filed:
Dec. 21, 1981
Jeff T Fenton, Ponca City, OK (US);
Mark P Mack, Ponca City, OK (US);
Conoco Inc., Ponca City, OK (US);
Abstract
This invention relates to 'comb' polymers having high molecular weight and related structurally to polyoxymethylene, but having improved thermal stability. In addition, this invention relates to a method for preparing these high molecular weight 'comb' polymers and teaches a process which exhibits reduced reactor fouling and produces a free-flowing powder. Generally the improved polymer is made by copolymerizing trioxane with polyanhydride or copolymerizing trioxane with copolymers of olefins and anhydrides. The improved polymer can optionally be reacted with agents known to react with terminal hydroxy groups to end-cap the polymer.