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. 03, 2015
Filed:
Sep. 06, 2012
Applicants:
Karl Paetz-lauter, Nottuln, DE;
Jie LI, Zofingen, CH;
Mika Meller, Jarvenpaa, FI;
Inventors:
Assignee:
ARMACELL ENTERPRISE GMBH & CO., Schoenefeld OT Waltersdorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/183 (2006.01); C08J 9/16 (2006.01); B29B 9/06 (2006.01); C08J 9/34 (2006.01); B29B 9/14 (2006.01); C08J 9/14 (2006.01); B29B 9/12 (2006.01);
U.S. Cl.
CPC ...
B29B 9/065 (2013.01); B29B 9/14 (2013.01); C08J 9/141 (2013.01); C08J 9/34 (2013.01); B29B 2009/125 (2013.01); C08J 2201/03 (2013.01); C08J 2203/14 (2013.01); C08J 2367/02 (2013.01); Y10T 428/2998 (2015.01);
Abstract
An extrusion expansion of low molecular weight polyalkylene terephthalates having an IV of below 1.0 dl/g to produce gas-charged beads is disclosed. The process includes an extrusion expanding of the resins and an underwater pelletizing of the melt threads. The obtained beads show a composite structure and are characterized by an IV of 0.69 dl/g or more and a melt viscosity ηof higher than 300 Pa·s.