Aromatic Dis

Group VIIA Mn Aminated complex Various diols Various aromatic di acids 79... 

Polycarbonates. Linear thermoplastic polyesters of carbonic acid with aliphatic or aromatic di-hvdroxv compds. A general structure presentation is as follows (Ref 4) ... 

Partenheimer has noted (ref. 15) that ca. 270 different substrates have been successfully oxidized using the Co/Mn/Br system. Some examples of aromatic di-and tricarboxylic acids that are commercially produced using the Amoco MC process are shown in Figure 4. 

Urea adduct Branched and cyclic alkanes, non-adduct V y Mono- aromatics Di- aromatics Tri- aromatics... 

Silenes derived from aromatic di- or polysilanes have been characterized in particular by the ene-type reactions they undergo when treated with isobutene or acetone. Recently, Leigh80 observed the first reported case of one of these silenes undergoing [2+2] cycloaddition (21% yield) with acetone. The ene product, the only product previously detected from the reaction of such silenes, was formed in 41% yield, as shown in Eq. (33). 

The product ion spectra generated from the aromatic di-NPEC homologues ionised in the positive mode, however, suffered from the destructive ionisation of anionics, as also observed in the ionisation process of the aliphatic alkylether sulfates [22]. 

From the materials just mentioned earlier, one can conclude that mutual meta orientation (meta through a benzene) of the spin-bearing moieties is an indispensable condition for the existence of triplet states in aromatic di- or tri-(cation-radical)s. However, in fact, these systems have both singlet and triplet forms, and the questions are about what is the difference in the corresponding energy and which state is more stable. Stability of the polyion-polyradicals is also a very important factor, especially in the sense of practical application. Let us consider several relevant examples. 

Curing Agent mixture of aromatic di-and polyamines (metaphenylenediamine, 42%, methylenediaminiline, 42%,... 

This book reviews some of the results of investigations of chemical conversions of chloral and TNT to new aromatic di(poly)amines and aromatic tetracarboxylic acid dianhydrides useful for the preparation of new polyimides combining good thermal, mechanical and electrical properties with improved processability. 

AMINES - AMINES,AROMATIC - DI ARYL AMINES] (Vol2) 2,4,6-Bis-0-(methylethylidene)-a-l-xylo-2-hexulofuranosom c acid [18467-77-1]... 

AMINES - AMINES,AROMATIC - DI ARYL AMINES] (Vol2)... 

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