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US 4,048,421 AGranted
Method of anioning polymerization of unsaturated monomers
AssigneeVysoka skola chemicko-technologicka
InventorsJaroslav Kralicek, Vladimir Kubanek, Jaroslava Kondelikova, Bohuslav Casensky, Jiri Machacek
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Abstract
A method for the anionic polymerization of unsaturated monomers involves effecting reaction in the presence of an organic derivative of a metal alumina hydride in an amount ranging from 0.01 to 5.0 mol percent based upon the amount of unsaturated monomer.
Claims12
Method for the anionic polymerization of an unsaturated monomer of the general formula
- CH.sub.2 .dbd. CXY
- wherein X and Y are selected from the group consisting of hydrogen, aryl, vinyl, --CN, --NO.sub.2, COOR and Cl, R being an alkyl group having from 1-6 carbon atoms which comprises adding to said monomer an organic derivative of a metal alumino hydride having the general formula
- MeAlH.sub.x (OR').sub.4-x
- wherein Me is a metal selected from the group consisting of the group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer ranging from 1-2, R' is selected from the group consisting of (a) CH.sub.2 CH.sub.2 OR" and (b) CH.sub.2 CH.sub.2 N(R").sub.2 wherein R" is an alkyl group having from 1-4 carbon atoms.
1 more element
Method for the anionic polymerization of styrene which comprises adding thereto an organic derivative of a metallo aluminum hydride of the formula
- MeAlH.sub.x [OCH.sub.2 CH.sub.2 O(CH.sub.2).sub.y H].sub.4-x
- wherein Me is a metal selected from the group consisting of the Group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer from 1-2 and y is an integer from 1-4.
Dependencies are inferred from the claim text.