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Main.POLYMERS.Inhibitors.DiNitro Alkyl Phenols.Co.: USA. S.Patent.Claims Etc.Claim 1: Polymn Inhibiting Compn.Neat Combi.: Compds Form.:.(I) ##STR5## & (II) ##STR6##; R=.3-12C Alkyl. Claim 4: R=Sec.-Butyl.Claim 6: Compn.: Vinyl Monomer &.Inhibitor Compn.: (I) ##STR7## &.(I) ##STR8##; R=3-12C Alkyl..Claims 7,8: Aromatic Solvent..Claim 13: Polymn Inhibitor Prepn.:.Hydroxy Aromatic+3-12C Olefin=.Alkylated Hydroxy Aromatic Intermed.iate+Nitric Acid (O2-Free)=.DiNitration of all Mono-Alkylated.Hydroxy Aromatic Compds in.Intermediate. Patent Assignee |