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:
Aug. 08, 2017
Filed:
Sep. 09, 2015
Carlos M. Villa, Lake Jackson, TX (US);
Jean-paul Masy, Destelbergen, BE;
Ricco B. Borella, Zurich, CH;
David A. Babb, Lake Jackson, TX (US);
Flor A. Castillo, Lake Jackson, TX (US);
Carlos M. Villa, Lake Jackson, TX (US);
Jean-Paul Masy, Destelbergen, BE;
Ricco B. Borella, Zurich, CH;
David A. Babb, Lake Jackson, TX (US);
Flor A. Castillo, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Copolymers of propylene oxide and ethylene oxide have an inner block that contains from 65-90 weight percent oxyethylene units and from 10 to 35 weight percent oxypropylene units. This block has a molecular weight of from 150 to 350. The copolymer has an outer block which contains at least 95 weight % oxypropylene units and from 0 to 5% oxyethylene units. The equivalent weight of the copolymer is from 800 to 2000. The copolymers are useful in making polyurethane foams that have unexpectedly high tensile and/or tear strengths.