Oxidative polymerization of monomers having at least two activated unsaturations
AssigneeMonsanto Company
InventorDonald N. Van Eenam
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Abstract
A process is described that results in the production of a hydrophilic air-drying polymer system suitable for increasing the inter-fiber bonding in a fibrous substrate material. The process comprises passing air through a monomer maintained at a temperature below about 30.degree. C., said monomer having at least two activated unsaturations, until a desired viscosity increase has been achieved.
Claims10
A process for the production of a hydrophilic air-curing polymer system which comprises passing oxygen through a monomer maintained at a temperature below 30.degree. C., said monomer having a structure comprising at least two unsaturations, with no more than three of said unsaturations being adjacent in the molecule, at least one of said unsaturations being .alpha., .beta. or .beta., .gamma. to a nucleophilic group capable of activating the unsaturation towards oxidative polymerization and selected from the group consisting of --O--, --S--, --CON<, --COO-- >C.dbd.C<, --SO.sub.2 N<, --SO.sub.2 -- and >NCN, so as to polymerize the monomer oxidatively and raise the viscosity of the system to a desired level.
Dependencies are inferred from the claim text.