STUDY ON COPOLYMER COATING OF TERPENE-CATECHOL WITH RAW LACQUER (II)——Study on Synthesis and Property of Copolymer Coating from Terpene-Catechol with Raw Lacquer

The synthesis of terpene-catechol resin from terpene resin and catechol and copolymer coating based on the produced resin with raw lacquer were reported in this paper. The synthetic conditions and properties of the copolymer coating were studied. The effects of ratio of terpene-catechol resin and raw lacquer, catalyst, reaction time and solvent on the film properties of coating were discussed. The reaction time was shorten 3 h, drying time was shorten 1 d at catalyst dosage 1%, and properties of the copolymer coating were improved. UV analysis of the coating showed that the reaction between terpene-catechol resin and raw lacquer was a copolymerization reaction. The optimum condition of painted film was that terpene-catechol resin and raw lacquer(1:4) reacted for 5.5 h with catalyst(1%) in petrol solvent. Drying time of the film was 3 d after the coating was painted.