Water-soluble functionalized

Water-soluble functional polymers, 24 171 Water-soluble granules, in phosphate fertilizers, 11 122... 

Water-soluble functionalized 2,2 -bipyridine ligands, carrying sodium phosphonate substituents were prepared. Their Rh- and Ir-complexes showed remarkable catalytic activity [208] in the hydrogenation of various... 

On this vinylated silica gel, CyD is imprinted (this technique is applicable to versatile water-soluble functional monomers). Acryloyl-CyD (90 mg, 67 pmol), MBAA (60 mg, 390 prnol), and the template molecule (30 pmol) are dissolved in 5 mM ofTris buffer solution (pH 8.0, 5 mL), and then vinylated silica gel (600 mg) is dispersed. The polymerization is started by adding potassium persulfate (7 pmol, 2 mg) and N,N,N, N -tetramethylethylenediamine (20 prnol, 3 pL) as an initiator system under nitrogen at 37 °C. After 1 h, the solid part is collected and washed with large amounts of water and methanol to remove the template and unreacted monomers. The polymer/silica-gel conjugates thus obtained are then packed into a stainless column and used as a stationary phase of HPLC. During the analysis, the column pressure is always kept normal. 

Other variations on these three basic processes include intermittent addition of batches of one or more of the components and shot" addition. The latter has been used successfully to enhance the incorporation of water-soluble functional monomers such as sodium styrene sulfonate [14], This is added all at one time, i.e. as a shot , during the later stages of the polymerization, prior to con lete conversion of the main monomer. 

Although the bromo-derivatives (74) decomposed slowly at room temperature it was possible to use the mixture as an intermediate for the preparation of water soluble semi-synthetic derivatives. Introduction of water soluble functionality into the molecule was accomplished following reaction with secondary amines, for example reaction with dimethylamine yielded the dimethylamino-derivative (75, = R2 = Me) and reaction with N-methylpiperazine yielded... 

Other synthetic efforts have been focused on the formation of heterofunc-tionalized saccharide shells in the glycodendrimers. In particular, the coupling of at least two different saccharide units or of one saccharide unit with other water-soluble functional groups has been described to enhance the binding affinity to lectins, and the influence of the density of the saccharide shell on binding affinities has been evaluated in this regard. 

Moreover, some water-soluble functional monomers can be used in emulsion copoljanerizations or terpol)anerizations. Acrylic acid, methacrylic acid, fumaric add, crotonic acid, maleic acid, itoconic acid, N-methylol acrylamide and some pol)mierizable monomer containing amines, amides and acetoacetates are used alone and in combination with each other to improve the stability and adhesion properties of VAc emulsion pol)miers. 

Polymers containing pyridine can be converted into polyaldehydes, by the action of cyanogen bromide, which can then be converted back to pyridines by the amino-groups of proteins." Relatively delicate and expensive enzymes may be immobilized by condensation copolymerization of a water-soluble functionalized prepolymer, a low molecular weight a, co-diamine and the enzyme. Inclusion of substrates, cofactors, products, or reversible inhibitors during the immobilization procedure protects the enzyme active site against deactivating acylation." ... 

In a modification of their work, Angelopoulos et al. [954] used a water-soluble functionality on the P(ANi) backbone which could be radiation cross-linked, leading to water-developable conductive resists. In yet another modification, they mixed solutions in NMP of undoped P(ANi) and the dopant/solubilizer, triphenyl sulfonium hexafluoroantimonate, and spin-coated water-developable discharge coatings therefrom. In charging test results, they found that in comparison with a ca. 5 pm displacement obtained with no P(ANi) underlayer beneath a 1.2 m, standard (diazonaphthoquinone-novolac) imaging resist, no displacement at all was observed when a 200 nm P(ANi) underlayer of surface conductivity ca. 1 S/cm was used. 

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