Process for the crosslinking of polystyrene
Abstract
Abstract PROCESS, AND PRODUCT OF THE TYPE RESULTING THEREFROM, OF CROSSLINKING POLYSTYRENE TO GIVE A SOLID NON-GELATINOUS PRODUCT PREFERABLY OF APPROXIMATELY THE SAME PARTICLE SIZE AS THE ORIGINAL NON-CROSSLINKED POLYSTYRENE, DERIVED BY CHLOROMETHYLATION OF AT LEAST A PART OF THE BENZENE RINGS OF THE POLYSTYRENE MACROMOLECULE BY MEANS OF CHLOROMETHYL METHYL ETHER, FOLLOWED BY METHANE BRIDGE CROSSLINKING RESULTING FROM DEHYDROCHLORINATION, ALL CARRIED OUT IN THE PRESENCE OF A NONSOLVENT FOR POLYSTYRENE (BEING A SOLVENT FOR THE CHLOROMETHYL METHYL ETHER) AND A FRIEDEL-CRAFTS CATALYST AND WHERE THE CONCENTRATION OF THE CHLOROMETHYL METHYL ETHER IN THE SAID NONSOLVENT IS AT ANY GIVEN MOMENT LESS THAN THAT WHICH WOULD CAUSE THE POLYSTYRENE IN THE REACTION TO CHANGE SIZE EITHER BY AGGLOMERATION OF PARTICLES OR BY GOING INTO SOLUTION (TO ANY SIGNIFICANT DEGREE).
Inventors
- 👤 J Peyrot
Bibliographic Details
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