Invention Grant
- Patent Title: Process for the preparation of isocyanates
- Patent Title (中): 异氰酸酯的制备方法
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Application No.: US12378508Application Date: 2009-02-17
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Publication No.: US07645900B2Publication Date: 2010-01-12
- Inventor: Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
- Applicant: Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent N. Denise Brown; Nolan J. Cheung
- Priority: DE102008009761 20080219
- Main IPC: C07C249/00
- IPC: C07C249/00
Abstract:
The present invention relates to a process for the preparation of isocyanates by reacting the appropriate amines with phosgene, condensing the gas mixture thereby obtained, stripping the liquid phase thereby obtained and returning the solvent so retained in liquid form to the reaction stage. The gaseous constituents are then purified further in an absorption process.
Public/Granted literature
- US20090209784A1 Process for the preparation of isocyanates Public/Granted day:2009-08-20
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