Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methyl-phenyl)-2H-benzotriazole mixtures, stabilized compositions and processes for preparing liquid mixtures

Granted: Jun 23, 1987 Filed: Nov 20, 1985

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.