N-methyl-2-pyrrolidone → Phthalic Anhydride

HRID 1769214노트

반응식

HRID 1769214 반응식
CN1C(=O)CCC1.[OH-].[Na+].Cl[C:11]1[CH:12]=[C:13]([C:20]([O-:22])=[O:21])[C:14](=[CH:18][CH:19]=1)[C:15]([OH:17])=O.[Na+]>[Ti].O>[C:20]1(=[O:21])[O:22][C:15](=[O:17])[C:14]2=[CH:18][CH:19]=[CH:11][CH:12]=[C:13]12

참가 물질

6

반응물 3

HCID 13387N-methyl-2-pyrrolidoneHCID 14798Sodium HydroxideHCID 2724244Sodium Hydrogen 4-Chlorophthalate

생성물 1

HCID 6811Phthalic Anhydride

시약·촉매·용매 2

HCID 23963Titanium촉매HCID 962Water용매2회

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온도
250 °C

실험 절차

A titanium-lined autoclave was charged with 108 g of a poly(phenylene sulfide) (melt viscosity: 2800 poises) produced by Kureha Chemical Industry Co., Ltd., 500 g of NMP, 7 g of sodium hydroxide, 8.43 g (0.05 mole as S content) of hydrated sodium sulfide and 8.8 g of water. After the autoclave being purged with nitrogen gas, the contents were gradually heated up to 250° C. to react them for 30 minutes, thereby depolymerizing the poly(phenylene sulfide). Thereafter, the contents were cooled to room temperature. Then, 17.8 g (0.08 mole) of sodium hydrogen 4-chlorophthalate and 48.6 g of water were added to the autoclave, and the contents were heated up to 255° C. to react them for 2 hours.

후처리

  1. customproduced by Kureha Chemical Industry Co
  2. customAfter the autoclave being purged with nitrogen gas
  3. customto react them for 30 minutes
  4. temperatureThereafter, the contents were cooled to room temperature
  5. temperaturethe contents were heated up to 255° C.
  6. customto react them for 2 hours

출처 및 근거

ORD 기록
ord-d7a85ea8ae024aa38b42ae7e87dc0aad
출처 데이터셋
uspto-grants-1995_01
특허 번호
US05380819

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