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:
Oct. 06, 2009
Filed:
Jul. 31, 2008
Tao Wang, Houston, TX (US);
Leslie Wade, Pearland, TX (US);
Ioan Nicolau, Corpus Christi, TX (US);
Yumin Liu, San Jose, CA (US);
Victor Wong, San Jose, CA (US);
Barbara Kimmich, League City, TX (US);
Jun Han, Sunnyvale, CA (US);
Valery Sokolovskii, Sunnyvale, CA (US);
Alfred Hagemeyer, Rheine, DE;
David M. Lowe, Sunnyvale, CA (US);
Karin Yaccato, Cambridge, MA (US);
Anthony Volpe, Santa Clara, CA (US);
Tao Wang, Houston, TX (US);
Leslie Wade, Pearland, TX (US);
Ioan Nicolau, Corpus Christi, TX (US);
Yumin Liu, San Jose, CA (US);
Victor Wong, San Jose, CA (US);
Barbara Kimmich, League City, TX (US);
Jun Han, Sunnyvale, CA (US);
Valery Sokolovskii, Sunnyvale, CA (US);
Alfred Hagemeyer, Rheine, DE;
David M. Lowe, Sunnyvale, CA (US);
Karin Yaccato, Cambridge, MA (US);
Anthony Volpe, Santa Clara, CA (US);
Calanese International Corp., Dallas, TX (US);
Abstract
The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre-catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre-catalyst that is produced from substantially chloride free catalytic components.