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Castor oil-hexachloroendomethylenetetrahydrophthalic anhydride reaction product

阅读:420发布:2023-05-24

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1. A PROCESS FOR ACHIEVING A POLYMER HAVING RUBBERLIKE CONSISTENCY, A LOW DIELECTRIC CONSTANT AND A LOW DISSIPATION FOACTOR, COMPRISING THE STEPS OF; HEATING , TO AN ELEVATED TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE REACTANTS, A POLYFUNCTIONAL HYDROXYL COMPOUND SELECTED FROM THE CLASS CONSISTING OF A POLYOXY-1,2-PROPYLENE EITHER TRIOL INITIATED WITH GLYCERINE AND HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE FROM 2500 TO 3950, AND CASTOR OIL, REACTING WITH SAID HEATED POLYFUNCTIONAL HYDROXYL COMPOUND A STOICHIOMETRIC AMOUNT OF HALOGENATED ORGANIC ACID ANHYDRIDE, DETERMINING COMPLETION OF THE REACTION BETWEEN SAID POLYFUNCTIONAL HYDROXYL COMPOUND AND SAID HALOGENATED ORGANIC ACID ANHYDRIDE, MIXING SAID REACTION PRODUCTS WITH AN UNCURED BISPHENOL EPICHLOROHYDRIN EPOXY RESIN, AND CURING SAID MIXTURE.
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