Dimethyl isophthalate → 3,6-Dioxabicyclo(6.3.1)dodeca-1(12),8,10-triene-2,7-dione

HRID 1076943ノート

反応式

HRID 1076943 の反応式
[C:1]([O:13][CH3:14])(=[O:12])[C:2]1[CH:11]=[CH:10][CH:9]=[C:4]([C:5]([O:7][CH3:8])=[O:6])[CH:3]=1.[Sb]#[Sb].OCCOC(=O)CCCCC(OCCO)=O>C([O-])(=O)C.[Mn+2].C([O-])(=O)C.C(O)CO>[C:5]1(=[O:6])[O:7][CH2:8][CH2:14][O:13][C:1](=[O:12])[C:2]2=[CH:11][CH:10]=[CH:9][C:4]1=[CH:3]2

参加物

6

反応物 3

HCID 15088Dimethyl isophthalateHCID 23967Antimony, mol. (Sb2)HCID 74340Bis(2-hydroxyethyl) adipate

生成物 1

HCID 817903,6-Dioxabicyclo(6.3.1)dodeca-1(12),8,10-triene-2,7-dione

試薬・触媒・溶媒 2

HCID 12525Manganous Acetate触媒HCID 174Ethylene Glycol溶媒

実験手順

Dimethyl isophthalate, 1.37 kg, and ethylene glycol, 0.92 kg, were charged into a reactor together with an ester exchange catalyst which was a mixture of 2.05 g manganese acetate and 1.35 g diantimony trixoide. The ester exchange reaction was carried out as described in Example 1, and 3.29 kg of bis(hydroxyethyl)adipate was added to the product thus obtained. The polymerization was carried out at 265°C. at 1 mm Hg pressure for 6 hours to provide a poly(ethylene isophthalate/adiphate) having a mol ratio of isophthalate to adipate of 33 to 67 and having an intrinsic viscosity of 0.56, as determined in a solvent mixture of 25 volume percent trifluoroacetic acid and 75 volume percent methylene chloride.

後処理

  1. additionwas added to the product
  2. customthus obtained

出典と根拠

ORDレコード
ord-5121e02df81a4298aa201f3d53995026
出典データセット
uspto-grants-1976_05
特許番号
US03959200

反応ノート

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