aerospace materials, for example, Kapton®. The arylation of aromatic diamines with arylhydrazine hydrochlorides was achieved in reasonable yields. This new and simple reaction occurred at room temperature in air using an inexpensive base. This transformation seems to proceed via a homolyticaromaticsubstitution (HAS) mechanism. The synthesized aromatic diamines are used as raw materials for polyimides, including
[EN] PROCESS FOR THE SYNTHESIS OF ARYLDIAZONIUM SALTS USING NITROGEN OXIDES IN OXYGEN-CONTAINING GAS STREAMS, ESPECIALLY FROM INDUSTRIAL WASTE GASES<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE SELS D'ARYLDIAZONIUM AU MOYEN D'OXYDES D'AZOTE DANS DES FLUX GAZEUX CONTENANT DE L'OXYGÈNE, PROVENANT EN PARTICULIER D'EFFLUENTS GAZEUX INDUSTRIELS
The present invention relates to a process for the synthesis of aryldiazonium salts using nitrogen oxides in oxygen-containing gas streams, especially from industrial waste gases.
本发明涉及一种利用含氧气体流中的氮氧化物合成芳基重氮盐的方法,特别是从工业废气中进行合成。
PROCESS FOR THE SYNTHESIS OF ARYLDIAZONIUM SALTS USING NITROGEN OXIDES IN OXYGEN-CONTAINING GAS STREAMS, ESPECIALLY FROM INDUSTRIAL WASTE GASES
The present invention relates to a process for the synthesis of aryldiazonium salts using nitrogen oxides in oxygen-containing gas streams, especially from industrial waste gases.
本发明涉及一种利用含氧气流中的氮氧化物,特别是利用工业废气合成芳基偶氮盐的工艺。
Method for preparing poly(carbonate-etherimide) compound
申请人:PTT Global Chemical Public Company Limited
公开号:US10759904B2
公开(公告)日:2020-09-01
The present invention relates to a method for preparing poly(carbonate-etherimide) compound comprising polycarbonate segment as shown in the structure (A) and polyetherimide segment as shown in the structure (B). Said method does not contain a highly toxic phosgene in its operation, can be performed easily, and can be operated at not high temperature. wherein R1 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; R2 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; m is an integer from 1 to 15; and n is an integer from 1 to 10.