JP2010043201A5

JP2010043201A5 -

Info

Publication number: JP2010043201A5
Application number: JP2008208745A
Authority: JP
Filing date: 2008-08-13
Publication date: 2011-09-22
Anticipated expiration: 2028-08-13

Description

実施例４−２・ポリカーボネート（５）の重合
反応槽に、撹拌しながら、先に調製したビスフェノールＡ／Ｃオリゴマー溶液（７４５．７９ｇ）、塩化メチレン（７７１．６０ｇ）、ｐ−ｔｅｒｔ−ブチルフェノール（０．３２３７ｇ）を加え、内部温度を１０℃にした。
別途、２５重量％水酸化ナトリウム水溶液（８６．９７ｇ）、脱塩水（２７５．１７ｇ）、２重量％トリエチルアミン水溶液（２．５１ｍＬ）を均一に混合したものを調製し、これを先の反応槽に仕込み、５時間撹拌を続けた。
塩化メチレン（２１２４．３４ｇ）、脱塩水（４８１．５１ｇ）を反応槽に添加し、２０分間そのまま撹拌した後、撹拌を停止し、水層と有機層を分離した。
以降、実施例１−２と同様の洗浄、分液、溶媒除去および乾燥操作を行って、目的のポリカーボネート（５）を得た。分析値を表２に示す。構造式を以下に示す。

Example 4-2 Polymerization of Polycarbonate (5) While stirring, the previously prepared bisphenol A / C oligomer solution (745.79 g), methylene chloride (771.60 g), p-tert-butylphenol ( 0.3237 g) was added to bring the internal temperature to 10 ° C.
Separately, a 25% by weight sodium hydroxide aqueous solution (86.97 g), demineralized water (275.17 g), and 2% by weight triethylamine aqueous solution (2.51 mL) were uniformly mixed, and this was added to the previous reaction vessel. The charging was continued for 5 hours.
Methylene chloride (2124.34 g) and demineralized water (481.51 g) were added to the reaction vessel, and the mixture was stirred as it was for 20 minutes. Then, the stirring was stopped and the aqueous layer and the organic layer were separated.
Later, a similar washing, liquid separation as in Example 1-2, and subjected to solvent removal and drying operation, to obtain a port Rica Boneto object (5). The analytical values are shown in Table 2. The structural formula is shown below.