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:
Mar. 20, 2007
Filed:
Nov. 05, 2002
Applicants:
Eckhard Ströfer, Mannheim, DE;
Martin Sohn, Mannheim, DE;
Hans Hasse, Stuttgart, DE;
Klemens Schilling, Stuttgart, DE;
Inventors:
Eckhard Ströfer, Mannheim, DE;
Martin Sohn, Mannheim, DE;
Hans Hasse, Stuttgart, DE;
Klemens Schilling, Stuttgart, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 47/00 (2006.01); A23J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of ≧65% by weight, the mean molar massof the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: where: