Process for the polymerization of vinyl monomers in the presence of metal alcoholates

Process for the polymerization of vinyl monomers in the presence of metal alcoholates

Vinyl monomers are polymerized in the presence of a compound of formula Mn(OR1)xRy, where M is a metal of valency n of Groups I, II or III of the Periodic Table, R and R1 are the same or different straight-chain or branched alkyl radicals, x is 1, 2 or 3, and y is n-x. Polymerization is effected at...

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Hauptverfasser: RAGAZZINI MARIO, GALLINELLA ENZO, BORSINI GIANCARLO
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator RAGAZZINI MARIO
GALLINELLA ENZO
BORSINI GIANCARLO
description Vinyl monomers are polymerized in the presence of a compound of formula Mn(OR1)xRy, where M is a metal of valency n of Groups I, II or III of the Periodic Table, R and R1 are the same or different straight-chain or branched alkyl radicals, x is 1, 2 or 3, and y is n-x. Polymerization is effected at - 100 DEG to + 100 DEG C., with or without solvents such as saturated aliphatic hydrocarbons containing 4-12 carbon atoms, ethers, or chloroform. Examples specify polymerization of vinyl chloride and fluoride, and acrylonitrile, using as catalyst, Al(C2H5)2(OC4H9), Al(C2H5)(OC4H9)2, Al(OC4 H9)3, Al(C2H5)2(OC2H5), Mg(C4H9)(OC3H7), or LiOBu, alone, or in n-heptane or ether. The product is a polymer of high linearity having a specific viscosity of 0.9-2 and syndiotactic index of 1.9-2.2.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Process for the polymerization of vinyl monomers in the presence of metal alcoholates
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