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:
Feb. 08, 2011
Filed:
Feb. 26, 2001
Applicants:
Camille Borer, Flurlingen, CH;
Martin Muller, Uzwil, CH;
Brent Allan Culbert, Wil, CH;
Inventors:
Assignee:
Buhler AG, Uzwil, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/80 (2006.01); C08G 63/88 (2006.01); C08F 6/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method and device for the continuous polycondensation of polyester material in the solid phase, in particular in the form of partially crystalline granulate. The aim of the invention is to achieve a high product throughput on recrystallising and recondensation of polyester material with a low initial IV. Said aim is achieved, whereby on recrystallisation, a low residence time of 1-10 minutes is achieved, by means of a rapid heating of a thin product layer, followed by an SSP treatment.