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:
Nov. 30, 1999
Filed:
Sep. 08, 1998
Applicant:
Inventors:
Karl-Friedrich Muck, Weisbaden, DE;
Horst Roschert, Ober-Hilbersheim, DE;
Robert M Gronner, Nueces, TX (US);
Satyajit Verma, Nueces, TX (US);
Michael G Yearwood, Nueces, TX (US);
Assignee:
Ticonna GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08G / ;
U.S. Cl.
CPC ...
524745 ; 528232 ; 528241 ; 528242 ; 528244 ; 528248 ; 528249 ; 528250 ; 524701 ; 524706 ; 524713 ; 524730 ; 524792 ;
Abstract
A process for the preparation of polyoxymethylene copolymers, wherein 1,3,5-trioxane is polymerized with generally known comonomers in the presence of a strong protonic acid initiator and in the presence of a formaldehyde dialkyl acetal, and wherein the initiator is dissolved in the formaldehyde dialkyl acetal before admixing to the trioxane and the comonomers.