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:
Mar. 07, 2017
Filed:
Nov. 09, 2009
Phillip S. Athey, Lake Jackson, TX (US);
Nathan Wilmot, Missouri City, TX (US);
Richard Keaton, Pearland, TX (US);
Cecile Boyer, Lake Jackson, TX (US);
Timothy Morley, Horgen, CH;
Phillip S. Athey, Lake Jackson, TX (US);
Nathan Wilmot, Missouri City, TX (US);
Richard Keaton, Pearland, TX (US);
Cecile Boyer, Lake Jackson, TX (US);
Timothy Morley, Horgen, CH;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. A trimerisation catalyst system comprising (a) a phosphonium cation; and (b) an isocyanate-trimer inducing carboxylate anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C. is provided.