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:
Jun. 05, 2018
Filed:
Dec. 23, 2013
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Aleksandar Stoiljkovic, Waedenswill, CH;
Stefan Ultsch, Staefa, CH;
Xiaosong Wu, Sugarland, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/40 (2006.01); B29C 47/10 (2006.01); E04D 5/06 (2006.01); B29K 23/00 (2006.01); B29K 105/00 (2006.01); B29L 31/10 (2006.01); B29C 47/00 (2006.01); B29B 7/48 (2006.01); B29B 7/88 (2006.01);
U.S. Cl.
CPC ...
B29C 47/402 (2013.01); B29C 47/0004 (2013.01); B29C 47/1027 (2013.01); B29C 47/40 (2013.01); E04D 5/06 (2013.01); B29B 7/48 (2013.01); B29B 7/88 (2013.01); B29C 47/0019 (2013.01); B29K 2023/08 (2013.01); B29K 2023/12 (2013.01); B29K 2105/0026 (2013.01); B29K 2105/0085 (2013.01); B29L 2031/108 (2013.01);
Abstract
The present disclosure is directed to a process for producing thermoplastic polyolefin roofing membrane. The process includes directly adding components of a high-load flame retardant TPO formulation to a counter-rotating twin screw extruder. The process includes extruding the formulation with counter-rotation of the twin screws and forming a TPO roofing membrane having a tensile strength of greater than 10 MPa and a flame retardance of rating of classification D as measured in accordance with EN ISO 1 1925-2, surface exposure test.