Title:
ジ−及び／又はポリイソシアネート及びグリコールを共同して製造する方法
Document Type and Number:
Japanese Patent JP5628332
Kind Code:
B2
Abstract:
A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates, which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate, hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B, dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C, in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile, in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct, in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, which in process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.
Inventors:
ボック，ミヒャエル
バウマン，ローベルト
フランツケ，アクセル
シュトレファー，エックハルト
タイス，ゲールハルト
バウマン，ローベルト
フランツケ，アクセル
シュトレファー，エックハルト
タイス，ゲールハルト
Application Number:
JP2012535802A
Publication Date:
November 19, 2014
Filing Date:
October 27, 2010
Export Citation:
Assignee:
ビーエーエスエフ ソシエタス・ヨーロピアＢＡＳＦ ＳＥ
International Classes:
C07C263/04; C07C29/128; C07C31/20; C07C265/14; C07C269/04; C07C271/28; C07C271/30
Attorney, Agent or Firm:
Toshiaki Eto