Poly 3,3 ,4,4 -benzophenone

Figure 13.4.1. Pyrogram from Py-GC/MS analysis of poly(3,3 ,4,4 -benzophenone-tetracarboxy ic dianhydride-alt-thionin). Pyrolysis done on 0.4 mg material at 85(f C in He, with the separation on a Carbowax type column.

The incorporation of pyridine or triazole improves the adhesion between poly(imide)s and copper.Poly(3,3, 4,4 -benzophenone tetracarboxylic dianhydride-3,5-diamino-l,2,4-triazole) (BTDA-DATA) contains the triazole moiety as repeating units. Poly(4,4 -oxydiphthalic anhydride-1,3-aminophenoxybenzene-8-azaadenine) (ODPA-APB-8-AA) bears the triazole moieties at the end." BTDA-DATA starts to decompose at 350°C. However, ODPA-APB-8-AA starts to decompose at 400°C. The polymers have been tested as adhesives for copper surfaces. The adhesion is increased by the formation of copper complexes. 

Poly(3,3, 4,4 -benzophenone tetracarboxyUc dianhydride-3,5-diamino-l,2,4-triazole), 317 C120-PPP... 

The need for HTPs or HTPBs is often for chemical (e.g., preventing of swelling or oxidation) and mechanical performance. For example, in the petroleum industry dual-layer hollow fiber membranes are used for separation of H2/CO2 and CO2/CH4 gases. These are prepared from solutions of 1 1 PIB/PI blend (e.g. poly[2,2 -(l,3-phenylene)-5,5 -bibenzimidazole] and poly[3,3 4,4 -benzophenone-icira-carboxylic-df-anhydride-co-5(6)-amino-l-(4 -amino-phenyl-l,3-/n-methyl-indane)]).i i The spun hollow fibers are coated by a solution of silicone rubber. The membranes had the desired microstructure. Membrane selectivity of 11.11 and 41.81 was obtained for H2/ CO2 and CO2/CH4, respectively. Furthermore, the new membranes showed good resistance toward COj-induced plasticization. Camacho-Zuniga et al. 

The poly(benzophenone) diradical (5.27) easily abstracts hydrogen from hydrogen-donor molecules (RH) or from a polymer molecule (PH) giving the poly(benzophenone) ketyl radical (5.2S) ... 

Termination of two poly(benzophenone) ketyl radicals gives inter-(3.138) or intra-(3.139) crosslinked structures with benzophenone pinacol groups ... 

Poly(benzophenone tetra-carboxylio dianhydride-cc -phenylene (hmnine)... 

Aliphatic—aromatic poly(amide—imides) based on N,1S7-bis(carboxyalkyl)-benzophenone-3,3, 4,4 -tetracarboxyhc diimides have shown a 10% weight loss at 400°C (14). 

Poly(phenylquinoxaline—arnide—imides) are thermally stable up to 430°C and are soluble in polar organic solvents (17). Transparent films of these materials exhibit electrical insulating properties. Quinoxaline—imide copolymer films prepared by polycondensation of 6,6 -meth5lene bis(2-methyl-3,l-benzoxazine-4-one) and 3,3, 4,4 -benzophenone tetracarboxyUc dianhydride and 4,4 -oxydianiline exhibit good chemical etching properties (18). The polymers are soluble, but stable only up to 200—300°C. 

Kinetic studies on the bulk polyesterification of a,o-dicarboxy poly(hexamethylene adipate) with a,polymeric medium. Solomon s mechanism1 can be considered as reasonable. 

The Ullman reaction has long been known as a method for the synthesis of aromatic ethers by the reaction of a phenol with an aromatic halide in the presence of a copper compound as a catalyst. It is a variation on the nucleophilic substitution reaction since a phenolic salt reacts with the halide. Nonactivated aromatic halides can be used in the synthesis of poly(arylene edier)s, dius providing a way of obtaining structures not available by the conventional nucleophilic route. The ease of halogen displacement was found to be the reverse of that observed for activated nucleophilic substitution reaction, that is, I > Br > Cl F. The polymerizations are conducted in benzophenone with a cuprous chloride-pyridine complex as a catalyst. Bromine compounds are the favored reactants.53,124 127 Poly(arylene ether)s have been prepared by Ullman coupling of bisphenols and... 

Poly(2,5-benzophenone), synthesis of, 492 Polybenzothiazole, synthesis of, 314-319 Polybenzoxazoles, synthesis of, 292, 314-319... 

T. Konry, A. Novoa, Y. Shemer-Avni, N. Hanuka, S. Cosnier, A. Lepellec, and R.S. Marks, Optical fiber immunosensor based on a poly(pyrrole-benzophenone) film for the detection of antibodies to viral antigen. Anal. Chem. 77, 1771-1779 (2005). 

Hexafluoroisopropylidene-unit-containing aromatic poly(ether ketone)s were first synthesized from an alkaline metal salt of Bisphenol AF (1) and 4,4 -difluoro-benzophenone.14 Cassidy and co-workers prepared hexafluoroisopropylidene-unit-containing poly(ether ketone)s by condensing 2,2-bis[4-(4-fluorobenzoyl)-phenyl]-l,l,l,3,3,3-hexafluoropropane (9) and 2,2-bis[4-(4-fluorobenzoyl)-phenyljpropane (10) with Bisphenol AF (1) or Bisphenol A (4) (Scheme 7).15 The reactions are nucleophilic aromatic displacements and were conducted in DMAc at 155- 160°C with an excess of anhydrous potassium carbonate. After 3 to 6 h of reaction, high-molecular-weight poly(ketone)s are obtained in high yields. 

Allen, N. S., Edge, M., Mohammadian, M. and Jones, K., UV and thermal hydrolytic degradation of poly (ethylene terephthalate) importance of hydroperoxides and benzophenone end groups, Polym. Degrad. Stabil., 41, 191-196 (1993). 

Ghassemi, H., Ndip, G. and McGrath, J. E. 2004. New multiblock copolymers of sulfonated poly(4 -phenyl-2,5-benzophenone) and polyjarylene ether sulfone) for proton exchange membranes. 11. Polymer 45 5855-5862. 

The immobilization of the sensitizer and catalyst is especially effective, because contamination of the materials (NBD and QC) with a sensitizer or catalyst markedly lower the efficiency of this system. 4-(N,N-dimethylamino)benzophenone was immobilized on poly(styrene) (30) and silica gel to use it as insoluble sensitizer 101 The polymer pendant sensitizer (30) was much more active than the monomeric compound when used in acetonitrile. Usually, the sensitizing activity of the sensitizer remained almost unchanged through immobilization, but sometimes decreased depending on their structure. As a catalyst of back reaction to release heat, Co(II)-tetraphenylporphyrine was anchored on polystyrene) beads (31), and showed good activity in its immobilized form10Z>. Activity decrease was observed- after several times recyclings of the catalyst. 

Preparation of poly(aryl ether) containing of 2,5-dichloro-2, 4 -di(tetra-hydro-2-pyranyloxy)benzophenone... 

Fig. 18.6. Calibration curve obtained by the immuno-assay procedure in the detection of anti-E2 using the ITO-Poly (pyrrole-benzophenone) coated optical fibers. The linear range of the calibration curve was obtained for titer 1 64,000 and lower. The curve was fitted according to the equation y = A+B(x), where x is the human sera (anti-E2 antibodies) dilution value and y is the chemiluminescence response. The obtained correlation coefficient was R2 = 0.988.

---