Process for the preparation of a catalyst useful for anionic lactam polymerization
AssigneePPG Industries, Inc.
InventorsRobert B. Hodek, Jerome A. Seiner
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Abstract
An improved process for the preparation of a lactam-magnesium compound which involves bringing into intimate admixture a lactam monomer represented by the following structural formula: ##STR1## wherein Y is an alkylene group having from 3 to 12 carbon atoms, in particulate form, and an organomagnesium-containing material. The process is carried out at a temperature below the melting point of the lactam monomer but at a temperature sufficient to convert at least a portion of the lactam monomer to said lactam-magnesium compound in pulverulent form. The lactam-magnesium compound is useful as a catalyst for anionic lactam polymerization.
Claims9
In a process for the preparation of a lactam-magnesium compound comprising reacting lactam monomer with an organomagnesium-containing material, the improvement comprises bringing lactam monomer represented by the following structural formula:
- ##STR4## wherein Y is an alkylene group having from 3 to 12 carbon atoms, in particulate form, into intimate admixture with the organomagnesium-containing material at a temperature below the melting point of the lactam monomer but at a temperature sufficient to convert at least a portion of the lactam monomer to said lactam-magnesium compound in pulverulent form.
Dependencies are inferred from the claim text.