Imide polymers
AssigneeRohm and Haas Company
InventorsMichael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
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Abstract
Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties oif imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
Claims22
A process for altering the properties of a polymer containing imide units of the structural formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from among hydrogen and substituted or unsubstituted, C.sub.1 to C.sub.20 alkyl, aryl, alkaryl or aralkyl, or mixtures thereof, wherein any substituents present are selected from the group consisting of methyl, ethyl, hydroxyl, methoxy, ethoxy, halo, carboxyl and ethylcarbonyl, wherein n is 0-1, and wherein the degree of imidization is at least 1% and said polymer contains residual acidic and anhydride groups, which process comprises reacting said residual groups with an agent capable of converting said acid and anhydride groups to non-acid or non-anhydride groups and incapable of reacting with said imide units, said agent being selected from the group consisting of alkylating agents and esterification agents.
Dependencies are inferred from the claim text.