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:
May. 28, 2019
Filed:
Jun. 20, 2016
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Jean-Paul Masy, Destelbergen, BE;
David A. Babb, Lake Jackson, TX (US);
Irena Amici-Kroutilova, Waedenswil, CH;
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/48 (2006.01); C08G 65/26 (2006.01); C08G 71/04 (2006.01); C08J 9/00 (2006.01);
U.S. Cl.
CPC ...
C08G 18/485 (2013.01); C08G 65/2606 (2013.01); C08G 65/2609 (2013.01); C08G 65/2663 (2013.01); C08G 65/2696 (2013.01); C08G 71/04 (2013.01); C08J 9/0061 (2013.01); C08G 2650/58 (2013.01); C08J 2375/08 (2013.01);
Abstract
Random poly(propylene oxide-co-ethylene oxide) polymers are made by polymerizing a mixture of propylene oxide and a small amount of ethylene oxide in the presence of a starter and a double metal cyanide catalyst complex, and then feeding in a mixture of propylene oxide and ethylene oxide while increasing the ethylene oxide concentration in the mixture to at least 90%. This produces a polyol suitable for making high resiliency polyurethane foam without need for adding an ethylene oxide cap.