P-xylene cyclic dimer derivative for preparing parylene film, and preparation method and use thereof

Abstract

The invention provides a p-xylene cyclic dimer derivative for preparing a parylene film, and a preparation method and use thereof. The method includes: reacting 4-methyl-2-(trifluoromethyl)benzoic acid with a reducing agent in the presence of a solvent, to obtain an intermediate 1; reacting the intermediate 1 with a chlorinating agent in the presence of a solvent, to obtain an intermediate 2; reacting the intermediate 2 with an organic amine in the presence of a solvent, to obtain an intermediate 3; and reacting the intermediate 3 with a base in the presence of a polymerization inhibitor and a solvent, to obtain 4,16-bis(trifluoromethyl)-[2,2]-p-xylene cyclic dimer. A parylene film prepared with the compound as a monomer shows a high hydrophobicity that is superior to the optimal waterproof parylene AF4 commercially available at present. The preparation cost is low, so the present invention has good application prospects in protective materials.

Dependencies are inferred from the claim text.