SYNTHESIS AND PROPERTIES OF ORGANO-SOLUBLE POLY(AMIDE IMIDE)S WITH HIGH REFRACTIVE INDICES
有机可溶性高折射率聚酰胺酰亚胺的合成与性能

A series of novel poly(amide-imide)s(PAIs)containing sulfur elements were synthesized and characterized.The flexible sulfur-containing groups,either the linear thioether linkage or cyclic thianthrene group were introduced into the PAIs in order to increase the refractive indices and decrease birefringences of the polymers.Thus,an aromatic diacid compound 1,4-bis(4-trimellit-imidophenylenesulfanyl)benzene(BTPB)was first synthesized from a sulfur-containing diamine 1,4-bis(4-aminophenylenesulfanyl)benzene(2SP...