Zeng Chong-yu
2008
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Journal
Journal of Chemical Engineering of Chinese Universities
Abstract
2,2-bis(3-phenyl-4-hydroxyphenyl)propane(bisOPP-A) is a new type of monomer used mainly in the synthesis of high molecular polymers,such as polycarbonate,epoxy resin,polyester,etc,and it is also used for polymer modification.Now the bisOPP-A was synthesized from o-phenyl phenol(OPP) and acetone by using p-toluene sulfuric acid as main catalyst and mercaptoacetic acid as promoter.The effects of the reaction temperature,the dosages of p-toluene sulfuric acid and mercaptoacetic acid,the molar ratio of OPP to acetone on the yield of bisOPP-A were studied by means of orthogonal test.Using the range analysis,the optimum conditions were found as follows:molar ratio of OPP to acetone is 4:1,dosage of p-toluene sulfuric acid is 12%(wt),dosage of mercaptoacetic acid is 6%(wt),reaction temperature is 60℃ and reaction time is 10 h;And the bisOPP-A yield of 62.8% can be achieved under above conditions.Pure bisOPP-A(purity99.3%,melting point 112.7~113.7℃) can be obtained when crude bisOPP-A is recrystallized in the mixed solvent of toluene and n-hexane with vacuum drying.The structure of obtained bisOPP-A was characterized by elemental analysis,IR,1H-NMR and MS.