COCONTINUOUS POLYMER OF METHYL METHACRYLATE AND POLYMER OF ETHYLENE-VINYL ACETATE

COCONTINUOUS POLYMER OF METHYL METHACRYLATE AND POLYMER OF ETHYLENE-VINYL ACETATE A composition comprising a cocontinuous interpenetrating network of: (A) a polymer of at least 50 weight percent methyl methacrylate units, and (B) a copolymer of ethylene and vinyl acetate, is prepared according to a...

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Bibliographische Detailangaben
Hauptverfasser:	STAAS, WILLIAM H, FELLMANN, ROBERT P, KORY, DANIEL R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	COCONTINUOUS POLYMER OF METHYL METHACRYLATE AND POLYMER OF ETHYLENE-VINYL ACETATE A composition comprising a cocontinuous interpenetrating network of: (A) a polymer of at least 50 weight percent methyl methacrylate units, and (B) a copolymer of ethylene and vinyl acetate, is prepared according to a process comprising the following steps: (i) dissolving a copolymer of ethylene and vinyl acetate in a monomer system comprising at least 50 weight percent methyl methacrylate, and (ii) adding to the resultant solution a free radical catalyst and reducing the temperature of the solution to below 55.degree.C while polymerizing the major portion of said monomer system. The resultant composition has high impact resistance, and is useful for applications similar to those to which acrylic and polycarbonate sheets are put.