Methyl vinyl ether → Furan-2,5-dione--methoxyethene (1/1)

HRID 728091

反応式

HRID 728091 の反応式
[CH:1]([O:3][CH3:4])=[CH2:2].[C:5]1(=[O:11])[O:10][C:8](=[O:9])[CH:7]=[CH:6]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>>[CH3:4][O:3][CH:1]=[CH2:2].[CH:6]1[C:5](=[O:11])[O:10][C:8](=[O:9])[CH:7]=1

参加物

4

反応物 3

HCID 7861Methyl vinyl etherHCID 7923Maleic Anhydride2 回HCID 11776Triphenylphosphine

生成物 1

HCID 62708Furan-2,5-dione--methoxyethene (1/1)

反応条件

温度
50 °C

実験手順

Then, 15 L methyl vinyl ether were added and slightly heated until all of the maleic anhydride was dissolved. The temperature was raised to about 50° C. and, once the reaction started, a temperature of 55° to 65° C. was maintained in the reaction vessel by suitable cooling. After 4 to 5 hours, the reaction was completed, as determined by the fact that no monomeric maleic anhydride could be detected by means of triphenylphosphine paper. The excess methyl vinyl ether was distilled off. The process yielded 4.8 kg of a colorless, finely powdered 1:1 maleic anhydride-methyl vinyl ether copolymer having a specific viscosity of 3.1.

後処理

  1. dissolutionwas dissolved
  2. temperaturea temperature of 55° to 65° C. was maintained in the reaction vessel by suitable cooling
  3. distillationThe excess methyl vinyl ether was distilled off

出典と根拠

ORDレコード
ord-ef986787183c4755bd8ef04dc023b54b
出典データセット
uspto-grants-1991_09
特許番号
US05047490

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