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. 10, 2018
Filed:
Sep. 29, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventor:
Uwe Keppeler, Hochdorf-Assenheim, DE;
Assignee:
BASF SE, Ludwigshafen am Rhein, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/18 (2006.01); C08J 9/20 (2006.01); B29C 44/34 (2006.01); C08J 9/00 (2006.01); C08J 9/12 (2006.01); C08J 9/14 (2006.01); C08J 9/232 (2006.01); C08J 9/236 (2006.01); C08J 9/228 (2006.01);
U.S. Cl.
CPC ...
C08J 9/18 (2013.01); B29C 44/3453 (2013.01); B29C 44/3461 (2013.01); C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); C08J 9/122 (2013.01); C08J 9/141 (2013.01); C08J 9/228 (2013.01); C08J 9/232 (2013.01); C08J 9/236 (2013.01); C08J 2201/034 (2013.01); C08J 2203/06 (2013.01); C08J 2203/14 (2013.01); C08J 2203/182 (2013.01); C08J 2205/052 (2013.01); C08J 2300/16 (2013.01); C08J 2367/02 (2013.01); C08J 2467/04 (2013.01);
Abstract
A process for producing expanded foam beads from pellets comprising at least one biodegradable polyester. The process comprises The blowing agent can be added in step I, or in step ii during the heating phase or following the heating phase. Following the heating phase, the suspension is maintained at a temperature in the range from IMT minus 5° C. to IMT plus 2° C. for 3 to 100 minutes, and the ratio of aqueous coolant to suspension medium is at least 0.3. The invention further relates to expanded foam beads obtained by the process and to moldings that are produced from the expanded foam beads.