Inhibition of polymerisation
AssigneeA H Marks and Company Limited
InventorsRichard Colin Loyns, Edward David Rippon, Emyr Phillips
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Abstract
The present invention provides methods and compositions for inhibiting polymerisation of ethylenically unsaturated monomers, which involve the use of nitroxide compound of formula (I): wherein R1 is C4-20 hydrocarbyl; and R2, R3, R4 and R5 are independently each C1-6 alkyl.
Claims53
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A method of inhibiting polymerization of an ethylenically unsaturated monomer, which comprises contacting the monomer with 4-butoxy-2,2,6,6-tetramethylpiperdine-1-oxide.
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A composition for inhibiting polymerization of an ethylenically unsaturated monomer, which comprises a first inhibitor and a second inhibitor of polymerization, wherein the first monomer is 4-butoxy-2,2,6,6-tetramethyl piperdine-1-oxide.
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An inhibitor of polymerisation of an ethylenically unsaturated monomer comprising 4-butoxy-2,2,6,6-tetramethylpiperidine-1-oxide.
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Dependencies are inferred from the claim text.