Method of preparing polymer lattices of homogeneous...

Details Method of preparing polymer lattices of homogeneous... Method of preparing polymer lattices of homogeneous...

C - Chemistry, Metallurgy

08

J

400/4508, 204/91

C08J 3/28 (2006.01) C08J 3/24 (2006.01) C08L 63/00 (2006.01)

Patent

CA 1189648

P A T E N T IMPROVEMENTS IN OR RELATING TO METHOD OF PREPARING POLYMER LATTICES OF HOMOGENEOUS INTERPENETRATED STRUCTURE. INVENTION : ALBERT GOURDENNE PASCAL HEINTZ ELECTRICITE DE FRANCE (SERVICE NATIONAL) ABSTRACT A method of preparing polymer lattices of homogeneous interpenetrated structure, starting from a mixture of at least two basic prepolymer constituents is characterised by the fact that a microwave radiation is applied having a frequency spectrum chosen in order that it interacts preferentially with the first prepolymer and a power density chosen in order that it directly activates the exothermic reaction of cross-linking of the first pre- polymer. The cross-linking of the second prepolymer is only triggered under the combined action of the heat due to the interaction of the microwave energy with the second prepolymer and the heat introduced by the cross-linking reaction of the first prepolymer, which makes it possible to combine propagation of the two cross-linking reactions at similar speeds. - 1 -

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