METHOD OF PREPARING POLYMER LATTICES OF HOMOGENEOUS INTERPENETRATED STRUCTURE

摘要

P A T E N TIMPROVEMENTS IN OR RELATING TO METHOD OF PREPARINGPOLYMER LATTICES OF HOMOGENEOUS INTERPENETRATEDSTRUCTURE.INVENTION : ALBERT GOURDENNEPASCAL HEINTZELECTRICITE DE FRANCE (SERVICE NATIONAL)ABSTRACTA method of preparing polymer lattices of homogeneousinterpenetrated structure, starting from a mixture of atleast two basic prepolymer constituents is characterisedby the fact that a microwave radiation is applied havinga frequency spectrum chosen in order that it interactspreferentially with the first prepolymer and a powerdensity chosen in order that it directly activates theexothermic reaction of cross-linking of the first pre-polymer. The cross-linking of the second prepolymer isonly triggered under the combined action of the heat dueto the interaction of the microwave energy with the secondprepolymer and the heat introduced by the cross-linkingreaction of the first prepolymer, which makes it possibleto combine propagation of the two cross-linking reactionsat similar speeds.- 1 -