Patent search ap:("BASF AG") AND inv:"VOGT WOLKER DIPL CHEM DR" Page 1

1.

发明专利
未知

公开(公告)号：DE2404774A1

公开(公告)日：1975-08-21

申请号：DE2404774

申请日：1974-02-01

Applicant: BASF AG

Inventor： FUCHS WERNER DIPL CHEM DR , PLATZ ROLF DIPL CHEM DR , VOGT WOLKER DIPL CHEM DR

IPC: C08G18/00 , C07C20060101 , C07C67/00 , C07C241/00 , C07C263/10 , C07C265/00 , C08G18/02 , C08G18/72 , C07C119/042

2.

发明专利
Polymethylene polyphenyl isocyanates prodn - by condensing aniline and formaldehyde to amine, then phosgenating the amine hydrochloride 未知

公开(公告)号：DE2404775A1

公开(公告)日：1975-08-21

申请号：DE2404775

申请日：1974-02-01

Applicant: BASF AG

Inventor： FUCHS WERNER DIPL CHEM DR , DUDECK CHRISTIAN DIPL CHEM DR , PLATZ ROLF DIPL CHEM DR , VOGT WOLKER DIPL CHEM DR

IPC: C07C263/10 , C07C119/042

Abstract: Polyisocyanates are prepd. by (a) condensing aniline and aq. HCHO in the presence of HCl and distilling the reaction mixt. without neutralisation to separate (and opt. recycle) water and/or unreacted aniline, (b) converting the polyamine-polyamine hydrochloride mixt. entirely to hydrochloride by suspending it in liq. HCl and adding liq. COCl2 to convert the hydrochloride to isocyanate. Pref. the mole ratio aniline:HCl is 15-160:1. Prods. are esp. used for prodn. of wood glues. The process is simple, non-polluting and free from waste.

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