POLYMER DERIVED FROM NITRILE, CONJUGATED DIENE AND AROMATICCO-MONOMERS:
(under the class definition) Subject matter involving a polymer derived from ethylenic reactants only derived from a nitrile, conjugated nonaromatic hydrocarbon and aromatic hydrocarbon, e.g., included herein are the "ABS" resins, grafts, blocks, and any other combination proper for Class 525, etc.
SEE OR SEARCH CLASS
526, Synthetic Resins or Natural Rubbers,
335+, for a polymer derived from hydrocarbon monomer containing at least two ethylenic groups.