Curing acrylic polymers with polyfunctional nitrile oxide compounds

• Main Authors: DANE KENTON PARKER, FRANCOIS JEAN-MARIE BRETON
• Format: Patent
• Language: English
• Published: 30.08.2000
• Edition: 7
• 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; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A process for curing an acrylic polymer comprises distributing an aromatic compound having at least two nitrile oxide groups bonded thereto throughout the acrylic polymer, wherein the acrylic polymer contains nitrile groups, and wherein a substituent other than hydrogen is in at least one ortho position to the nitrile oxide group. The substituents other than hydrogen may be alkyl groups and the aromatic compound having at least two nitrile oxide groups may be mesitylene dinitrile oxide. The acrylic polymer preferably comprises repeat units derived from an alkyl acrylate, an alkyl methacrylate, acrylonitrile, and styrene and should not contain any units derived from diene monomers. A crosslinked acrylic polymer is also disclosed which comprises polymer chains which are crosslinked through sites derived from a stable dinitrile oxide compound.