A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.
申请公布号
US4945001(A)
申请公布日期
1990.07.31
申请号
US19880200246
申请日期
1988.05.31
申请人
CALIFORNIA INSTITUTE OF TECHNOLOGY
发明人
GUPTA, AMITAVA;LIANG, RANTY H.;YAVROUIAN, ANDRE H.