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US 4,900,781 AGranted
Process for modifying addition polymerization plastics
AssigneeKayaku Noury Corporation
InventorsYasuo Hirai, Toshio Niwa
Life of this patent
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Abstract
A process for modifying addition polymerization plastics is disclosed. According to the process, an organic peroxide is adsorbed on a zeolite, mixed with an addition polymerization plastic and heat-treated. The process produces an addition polymerization plastic having an increased melt flow index.
Claims6
A process for increasing the melt flow index of an addition polymerization plastic comprising:
- (i) mixing an addition polymerization plastic with an organic peroxide which has been previously adsorbed onto a zeolite to form a mixture;
- (ii) heating said mixture;
- wherein the melt flow index of said plastic is increased in comparison to its melt flow index prior to mixing with said organic peroxide.
Dependencies are inferred from the claim text.