Description: 526 synthetic resins or natural rubbers -- part of the class 520 series / 526 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (72) polymers from only ethylenic monomers or processes of polymerizing, polymerizable compositions containing only ethylenic monomers as reactants or processes of preparing (258) from monomer containing nitrogen atom as part of a heterocyclic ring (263) nitrogen of ring is bonded directly or indirectly to extracyclic ethylenic moiety
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Patent Apps in 526/263
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