Polymerizations monomeric dyes

VI), respectively, show the 248-nm and 193-nm polymeric BARC design antireflection coating architectures. Typical examples of monomeric dyes are shown in... 

Incorporation of an arylazo substituent at the para position of phenol gives a dye that can react with methanal into polymeric dyes. Such polymeric dyes are prepared from substituted 4-Arylazo-3-aminophenolic compounds and methanal in the presence of aqueous oxylic acid (equation 40). The polymerization of the monomeric dyes on nylon and polyester leads to brilliant shades and excellent dye fixation on both materials. Furthermore, the light and wash fastness can be increased by polymerization of the monomeric dyes on the fibers [127],... 

On the other hand, it was reported that polymeric azo dyes more often shown poor fading resistance than the corresponding monomeric azo dyes. 

The maximum absorption of the polymeric and monomeric azo dyes in (CH2Cl)2 were shown in Table 3, and a little hypsochromic shift of the maximum absorption was observed in all of the polymeric azo dyes when compared to the corresponding monomeric azo dyes. 

In some cases, dye-forming moieties attached to a polymeric backbone, called a polymeric coupler, can replace the monomeric coupler in coupler solvent (51). In other reports, very small particles of coupler solubilized by surfactant micelles can be formed through a catastrophic precipitation process (58). Both approaches can eliminate the need for mechanical manipulation of the coupler phase. 

Uses Antioxidant photographic reducer and developer for black and white film determination of phosphate dye intermediate medicine in monomeric liquids to prevent polymerization stabilizer in paints and varnishes motor fuels and oils. 

Fig. 24. Structural model of monomeric and polymeric multilayer assemblies doped with cyanine dyes. The black bars represent the polydiacetylene rc-bond system (from Ref.

Polymeric quaternary ammonium surfactants made from w-dodecyl bromide and poly(2-vinylpyridine) are better solubilizers for oil-soluble azo dyes and for n-decanol than monomeric quaternary cationics with similar (monomeric) structures (Tokiwa, 1963 Inoue, 1964). Solubilization of n-decanol in the polycationics increased as the alkyl chain content increased to a maximum at 24% alkyl content and resulted, at high decanol content, in intermolecular aggregation of the poly cationic molecules (Inoue, 1964). 

In the case of polymeric dye assemblies, one observes several complex, ill-understood fluorescence phenomena. Very often it is observed that monomeric and dimeric aromatic dyes fluoresce strongly, whereas the fluorescence in large... 

Polymeric food colorants have been prepared either by polymerization of monomeric chromophores or by chemical modification of preformed polymers through a suitable functional dye group. For example, the methacrylamide naphthyl derivative was polymerized to give a polymeric food colorant (Scheme 5.3) [21, 22] ... 

Table 3 Maximum absorption of the polymeric and monomeric azo dyes in...

It was described in Todays report (5) on IR and visible absorption spectra of benzene azopyrazolone dyes that a chelate ring was formed between CO group at 5-position and NH of hydrazone, and some relation was set up between the strength of the chelate bond and Hammet s -constant of substituent group in a diazo component. The influence by polymerization on the relationship between the maximum absorption of the monomeric azo dyes and Hammet s constant of substituent group in a diazo component was studied. The result showed some relations were slightly influenced by polymerization as shown in Fig. 2. 

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