Hydroxy ether polymers as thermoplastic barrier resins
AssigneeThe Dow Chemical Company
InventorsJerry E. White, H. Craig Silvis, Michael N. Mang, Shari L. Kram, Robert E. Hefner, Jr.
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Abstract
Thermoplastic hydroxy ether polymers containing inertly substituted or unsubstituted stilbene and ether linkages in the backbone chain and pendant hydroxyl moieties are prepared by reacting (a) an inertly substituted or unsubstituted dihydroxy-stilbene with (b) a diglycidyl ether and, optionally, (c) a difunctional monomer under conditions sufficient to cause the hydroxyl moieties to react with the epoxy moieties to form ether linkages and pendant hydroxyl moieties. The polymers exhibit excellent oxygen barrier properties and are useful in packaging oxygen-sensitive materials.
Claims27
A thermoplastic polymer having a substituted or unsubstituted stilbene moiety and ether moieties in its backbone chain, pendant hydroxyl moieties, and a monovalent organic terminating group containing no functional group which contains hydrogen active with epoxide groups and which is the residue of an end capper which is monofunctional with respect to epoxy groups selected from the group consisting of carboxylic acids, thiols, monofunctional sulfonamides, secondary amines and monohydric phenols.
Dependencies are inferred from the claim text.