cpd.
1.In this paper, 6 kinds of epoxy monomers (CPD-02, CPD-04, CPD-16, CPD-20, CPD-22, CPD-23) and 5 kinds of hybrid monomers (CPD-07, CPD-10, CPD-12, CPD-14, CPD-18), which can photopolymerize easily, were synthesized from dicyclopentadiene.
2.Ranging from 0.5 to 22.8 cycles per degree(cpd),contrast thresholds were determined forstationary sinusoidal gratings at 0.5cpd,1cpd,3cpd,6cpd,11.4cpd and 22.8cpd spatial frequencies. Data from patients were compared with those fromage-matched normal subjects.
7.(3) The esterific optimum conditions of CPD-06, CPD-15, CPD-19 and CPD-21 were: p-toluenesulfonic acid as catalyst, methylbenzene as dehydrator, the yield of them was over 90%.
