Acrylonitrile-divinylbenzene copolymers

In the area of hydrometallurgy, Cu2+ and Au(CN)2 salts could be selectively sorbed from aqueous solutions with polyacrylamide-based copolymers containg aminoguanidine units. Porous copolymers of acrylonitrile, divinylbenzene and vinylacetate were derivated with aminoguanidine.15 Alternatively, methacrylate-based copolymers were transamidated with the same base16 to give polyacrylamide-type resins (Figure 11). 

Pd complexes of polymeric diphenylphosphinyl ferrocene are effective catalysts for the hydrosilylation of styrene and 1-hexene by SiHCls. They can be recycled with no loss of activity.Nitrile groups on macroporous copolymers of acrylonitrile/divinylbenzene/ styrene are effective ligands for the immobilization of Rh(I), Pt(II), and Pd(II) complexes, which can be used as hydrosilylation catalysts, with their effectiveness closely related to the morphology of the polymer matrix. Similar transformation was also effected by platinum catalyst immobilized by mercaptan groups over polysiloxane. ... 

The SAN and ABS cxjpolymers aantain approximately 25 wt% of acrylonitrile and polybutadiene rubber in amounts up to 20 wt%. Other styrene copolymers of industrial importance include styrene—maleic anhydride copolymer (SMA), styrene-divinylbenzene copolymer, acrylic—styrene-acrylonitrile terpolymer, and styrene-butadiene copolymer. Recently, metallocene catalysts have been developed to synthesize syndiotactic polystyrene (sPS). The polymerization process and process conditions have major effects on polymer properties and process economy. For styrene homopolymerization and copolymerization, various types of polymerization reactors are used commercially. 

Iron oxide nanocomposites have been prepared by hydrolysis of iron salts in sulfonated polystyrene resins, mesoporous sulfonated styrene-divinylbenzene copolymer, acrylonitrile-methyl methaciylate-divinylbenzene copolymer, cross-linked high amylose starch, polyimides, polyvinylpyridine, polypyrrole,eellulosies. Nanocomposites of metals (Cr, Mo, W, Fe, Co, Ni) with a variable particle size (2-10 mn), have been prepared from solutions of metal preeursors in a molten polymer (polyethylene, polypropylene, polytetra-fluoroethylene, polyamide, polyaiylate, polycarbonate, polystyrene, polyethers, polyphenyleneoxide, siloxane). There are also many examples of in-situ precipitation of iron oxides in aqueous solution of polymers, such as dextran, PVA, polyethylene glycol, etc. In this case, size dispersion and aggregation are frequent, but they can be minimized by using reverse micelles. ... 

Styrene Acrylonitrile a-Methylstyrene p-Divinylbenzene Figure 10.1 Monomers used for SAN Copolymers... 

Example 2. Acrylonitrile-butadiene rubber (5 wt.%) is dissolved in a mixture of chloromethylstyrene (82 wt.%) and divinylbenzene (10 wt.%) (mixture of o- and p-divinylbenzene). After benzoyl peroxide (3 wt.%) is dissolved in the mixture, the obtained pasty mixture is coated on a woven-cloth fabric made of poly(vinyl chloride) and polymerized at 80 °C for 16 h under nitrogen atmosphere, covered with a polyester film and then pressed with steel plates on both sides. After polymerization, the obtained membranous copolymer is immersed in trimethylamine (1 mol) mixed with acetone (25 wt.%) and water (75 wt.%) solution for 24 h at 30 °C to react with the chloromethyl groups of the membrane.37... 

Poly (styrene-co-acrylonitrile). See Styrene/acrylonitrile copolymer Poly (styrene-co-allyl alcohol). See Styrene/allyl alcohol copolymer Poly (styrene-co-butadiene). See Styrene/butadiene polymer Poly (styrene-co-divinylbenzene). See Styrene/DVB copolymer Poly (styrene-co-maleic anhydride). See Styrene/MA copolymer Poly (styrene-co-methyl methacrylate). See Styrene/methyl methacrylate copolymer Poly (styrene-co-a-methylstyrene). See Styrene/a-methyl styrene resin Poly (styrene-divinylbenzene). See Styrene/DVB copolymer Polystyrene, expandable Synonyms EPS Expandable polystyrene Expanded polystyrene XPS Definition Amorphous PS beads contg. pentane as a blowing agent and coated with a lubricant the polymer is converted to foamed articles with a closed cell structure by applic. of steam Properties Beads (0.4-1.5 mm diam.)... 

SIO Highly polar cross-linked copolymer of acrylonitrile and divinylbenzene. Hayesep C... 

Polystyrene (PS) is an addition polymer, which may be produced by bulk, emulsion or suspension polymerization of styrene. Styrene is obtained from ethylbenzene by catalytic delydrogenatioa The PS is a vinyl polymer in which hydrogen is replaced by pheityl group. Its copolymers can be produced using different monomers such as butadiene, acrylonitrile, ethyleneoxide, and divinylbenzene. 

The double bonds present on the fatty acid chains can undergo cationic or radical polymerization processes. The reactivity towards different polymerization techniques depends on the number and position of the double bonds hence conjugated double bonds are more reactive. Henna and co-workers (2007) prepared a copolymer of conjugated low-saturation soybean oil, acrylonitrile, and either divinylbenzene or dicyclopentadiene via free-radical polymerization. The resulting transparent yellow polymers exhibiled 10% weight loss in the dicyclopentadiene and divinylbenzene at 402-428 and 370-391 C, respectively. Complete conversion of conjugated low-saturation soybean oil was achieved when the oil concentration was kept between 40 and 65%. 

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