| abstract |
MALEIC ANHYDRIDE AND AN ALIPHATIC OLDFIN HAVING FROM 16 TO 18 CARBON ATOMS, SUCH AS 1-OCTADECENE, ARE COPOLYMERIZED IN THE PRESENCE OF A FREE RADICAL CATALYST AND A SOLVENT SUCH AS A SATURATED DIHALOGENATED ALIPHATIC LIQUID HYDROCARBON HAVING FROM ONE TO FIVE CARBON ATOMS, FOR EXAMPLE, PROPYLENE DICHLORIDE. ENOUGH SOLVENT IS EMPLOYED TO SOLUBILIZE NOT ONLY THE REACTANTS BUT ALSO THE COPOLYMER PRODUCTS. THE COPOLYMER IS PRECIPITATED IN A FILTERABLE PARTICULATE SOLID FORM BY ADMIXING THE ENTIRE REACTION PRODUCT WITH AN ALIPHATIC MONOHYDROXY ALCOHOL HAVING THREE CARBON ATOMS, SUCH AS N-PROPANOL. THIS INVENTION RELATES TO THE PREPARATION OF A COPOLYMER OF MALEIC ANHYDRIDE AND AN ALIPHATIC OLEFIN HAVING FROM 16 TO 18 CARBON ATOMS PER MOLECULE IN A PARTICULATE SOLID FORM. |