反応 #735545

反応方程式

water

methylene chloride

bisphenol-A

sodium gluconate

→

Bisphenol-A Polycarbonate

溶媒

triethylamine

反応条件

後処理

1. 1
   その他To a reactor fitted with a mechanical agitator
2. 2
   その他terminating agent
3. 3
   workup.ADDITIONPhosgene was introduced at the rate of 18 grams/minute and phosgenation
4. 4
   温度The pH was maintained at between 8.0 and 10.0 by the addition of 25% aqueous sodium hydroxide
5. 5
   workup.ADDITIONwere added
6. 6
   その他the brine layer separated by centrifuge
7. 7
   洗浄the resin solution washed with aqueous acid water
8. 8
   その他precipitated
9. 9
   その他dried
10. 10
    workup.ADDITIONTo this resin product were added minor amounts (about 0.03 parts by weight per hundred parts by weight of resin) of a phosphite
11. 11
    その他was then fed to an extruder operating at a temperature of about 500° F.
12. 12
    その他molded at about 570° F. into test samples

実験手順

To a reactor fitted with a mechanical agitator were charged 5.5 liters of deionized water, 10 liters of methylene chloride, 2280 grams (10 moles) of bisphenol-A, 28 milliliters of triethylamine, 3.4 grams of sodium gluconate, and 0.40 mole of chain terminating agent. Phosgene was introduced at the rate of 18 grams/minute and phosgenation is continued for 60 minutes. The pH was maintained at between 8.0 and 10.0 by the addition of 25% aqueous sodium hydroxide. After phosgenation has ceased 4 liters of methylene chloride were added, the brine layer separated by centrifuge and the resin solution washed with aqueous acid water. The resin was steam precipitated and dried. To this resin product were added minor amounts (about 0.03 parts by weight per hundred parts by weight of resin) of a phosphite and of an epoxy stabilizer. This resin product was then fed to an extruder operating at a temperature of about 500° F. to extrude the resin into strands and the extruded strands chopped into pellets. The pellets were then injection molded at about 570° F. into test samples measuring about 21/2"×1/2"×1/8".

出典