POLY COMPOUNDS

Bi et al. [39] reported an interesting study of six new hetero-poly-compoimds in the pVUCHzOMAsaW, 5056)2]series (M = Cu(II), Mn(n), Coai), Ni(II), Zn(n), Cd(II)). The two copper atoms of the C114O16 cluster are coordinated by water molecules. The replacement reactions of the coordinated water molecules of this series of hetero-poly-compounds in aqueous solutions and in selected organic solvents were reported. The results showed that [Fe(CN)6] > [Fe(CN>6], H2NCH2CH2NH2, etc., can replace the coordinated water to form its... 

CHR) , formed, e g. from the reaction of diazomethane and alcohols or hydroxylamine derivatives in the presence of boron compounds or with metal compounds. Poly-methylene is formally the same as polyethene and the properties of the various polymers depend upon the degree of polymerization and the stereochemistry. 

Ghoreishy, M. H. R. and Nassehi, V., 1997. Modelling the transient flow of rubber compounds in the dispersive section of an internal mixer with slip-stick boundary conditions. Adv. Poly. Tech. 16, 45-68. 

Di- and poly-halogenated aliphatic hydrocarbons. No general procedure can be given for the preparation of derivatives of these compounds. Reliance must be placed upon their physical properties (b.p., density and refractive index) and upon any chemical reactions which they undergo. 

These may be produced from a great variety of poly-functional compounds to obtain satisfactory products, the reactants must be pure. A few examples follow. 

Nitration and aromatic reactivity D The nitration of hi- and poly-cyclic compounds... 

ETHYLENE We discussed ethylene production in an earlier boxed essay (Section 5 1) where it was pointed out that the output of the U S petrochemi cal industry exceeds 5 x 10 ° Ib/year Approximately 90% of this material is used for the preparation of four compounds (polyethylene ethylene oxide vinyl chloride and styrene) with polymerization to poly ethylene accounting for half the total Both vinyl chloride and styrene are polymerized to give poly(vinyl chloride) and polystyrene respectively (see Table 6 5) Ethylene oxide is a starting material for the preparation of ethylene glycol for use as an an tifreeze in automobile radiators and in the produc tion of polyester fibers (see the boxed essay Condensation Polymers Polyamides and Polyesters in Chapter 20)... 

VF copolymers [FLUORINE COMPOUNDS, ORGANIC - POLY(VINYL FLUORIDE)] (Vol 11)... 

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