2Johnson S C.Improvements in or relating to diphenolic acid[P].GB:768,206,1955-02-13.
3Johnson S C.Improvements in or relating to diphenolic acid[P].GB:790,373,1955-02-05.
4Bozell J J,Moens L,Elliott D C et al.Production of levulinic acid and use as a platform chemical for derived products[J].Resouces,Conservation and Revyccling,2000,28:227-239.
5Zhang R F,Moore J A.Synthesis,characterization and properties of polycarbonate containing diphenolic acid[J].Abstract of Papers of the American Chemical Society,2002,224:17-21.
6Isoda Y,Azuma M.Preparation of bis(hydroxyaryl)pentanoic acids[P].JP:08053,390,1996-02-27.
7Smit R V,Racine Wis.Method ofpreparing 4,4-bis(4-hydroxyaryl)pentanoic acids[P].USP:3,248,421,1966-04-26.