Methods for inhibiting the polymerization of vinyl monomers
AssigneeBetzDearborn Inc.
InventorGraciela B. Arhancet
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Abstract
An alpha-tocopherol is disclosed as a polymerization inhibitor effective against vinyl monomer polymerization. Alpha-tocopherol was found to inhibit polymerization of acrylonitrile and diolefines such as isoprene and butadiene. Alpha-tocopherol was found to interact synergistically with hydroquinone in inhibiting polymerization of acrylonitrile.
Claims13
A method for inhibiting polymerization of vinyl monomers consisting essentially of unsaturated vinyl monomers during processing, storage, and transportation comprising adding to the vinyl monomers an effective polymerization inhibiting amount of an alpha-tocopherol.
A method of inhibiting polymerization of unsaturated vinyl monomers comprising adding to said unsaturated vinyl monomers an effective polymerization inhibiting amount of a combination of (a) an alpha-tocopherol and (b) hydroquinone.
Dependencies are inferred from the claim text.