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. 16, 2009
Filed:
Jun. 26, 2006
Fritz Pohl, Brunsbuttel, DE;
Ricardo Serra, Krefeld, DE;
Matthias Ehlers, Mame, DE;
Jeffrey S. Bolton, Dusseldorf, DE;
Gary B. Solak, League City, TX (US);
Kirk J. Bourgeois, Baytown, TX (US);
Gregory L. Mccullough, Highlands, TX (US);
Amber R. Hicks, Manvel, TX (US);
Richard G. Hillman, Houston, TX (US);
James E. Sager, Highlands, TX (US);
Xiaoyan Wang, League City, TX (US);
Spotswood Miller, Friendswood, TX (US);
Ralf Ochel, Seabrook, TX (US);
Sara Delucia, Pittsburgh, PA (US);
Fritz Pohl, Brunsbuttel, DE;
Ricardo Serra, Krefeld, DE;
Matthias Ehlers, Mame, DE;
Jeffrey S. Bolton, Dusseldorf, DE;
Gary B. Solak, League City, TX (US);
Kirk J. Bourgeois, Baytown, TX (US);
Gregory L. McCullough, Highlands, TX (US);
Amber R. Hicks, Manvel, TX (US);
Richard G. Hillman, Houston, TX (US);
James E. Sager, Highlands, TX (US);
Xiaoyan Wang, League City, TX (US);
Spotswood Miller, Friendswood, TX (US);
Ralf Ochel, Seabrook, TX (US);
Sara DeLucia, Pittsburgh, PA (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
Isocyanates are produced by reacting an organic amine with phosgene in process which includes at least three stages. The first stage is carried out in a dynamic mixer. The second stage is carried out in at least one reactor. The third stage is carried out in at least one material separating apparatus. The pressure in the reactor of the second stage must be greater than or equal to the pressure in the dynamic mixer. The pressure in the third stage material separating apparatus must be lower than the pressure in the second stage reactor.