73622-93-2 Acetic acid, 2,2'-phenoxydi-, dianhydride with N,N'-vinylenedicarbamic acid BRN 2029947 CARBAMIC ACID, N,N'-VINYLENEDI-, DIANHYDRIDE with PHENOXYACETIC ACID N,N'-Vinylenebis(phenoxyacetic acid carbamic acid anhydride)