Dsm Rim Nylon Vof

Monsanto Company

Edward H Mottus

Ross M Hedrick

Bernard Silverman

Disclosed are lactam polymerization initiators comprising at least two lactam terminal groups of the formula: ##STR1## wherein Q is a lactam residue containing a C.sub.3 to C.sub.11 alkylene group and is bonded to a carbonyl through the nitrogen atom of the lactam; A is an aliphatic or aromatic hydrocarbyl or hydrocarbyl ether group; m is 0 or 1; when m is 0, n is 0 or 1 and p is 1; when m is 1, n is in the range of 1 to 3 and p=n; and an elastomeric backbone derived from a telechelic polyamine containing at least two primary or secondary amine groups. Also disclosed are a process for forming the same; nylon block copolymers produced therefrom; and a process for the polymerization thereof.

Lactam polymerization initiators

Unsaturated oligomers and solutions thereof are stabilized with a trisubstituted urea to provide improved storage stability. The stabilized unsaturated oligomer solutions are useful in lactam polymerization processes which yield nylon block copolymers containing unsaturated oligomer segments. The unsaturated oligomers disclosed herein have at least 4 carbons and have pendant thereto at least one hydroxy, amine, epoxy, acyllactam, or acyllactam precursor group.

Stabilized lactam polymerization solutions

The disclosure relates to pharmaceutically acceptable amide and imide derivatives of low molecular weight copolymers of chloroethyl vinyl ether and maleic anhydride having antitumor activity.

Polymeric antitumor agent

The disclosure relates to pharmaceutically acceptable amide and imide derivatives of low molecular weight terpolymers of butyl vinyl ether, maleic anhydride and maleimide having antitumor activity.

Terpolymeric antitumor agent

The disclosure relates to pharmaceutically acceptable amide and imide derivatives of low molecular weight copolymers of butyl vinyl ether and maleic anhydride having antitumor activity.

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Ballwin, MO, United States of America

Edward H Mottus