Ethylene carbonate → Ethylene carbonate

HRID 247714

Reaction equation

HRID 247714 reaction equation
[C:1]1(=[O:6])[O:5][CH2:4][CH2:3][O:2]1>O.O.O.[O-][Sn]([O-])=O.[Na+].[Na+]>[C:1]1(=[O:6])[O:5][CH2:4][CH2:3][O:2]1.[C:1](=[O:5])=[O:2]

Participants

4

Reactant 1

HCID 7303Ethylene carbonate

Product 2

HCID 280Carbon DioxideYield 18.7%HCID 7303Ethylene carbonateYield 97.3%

Reagents, catalysts & solvents 1

HCID 21977542Sodium StannateCatalyst

Conditions

Temperature
175 °C

Procedure

A 10:1 mole ratio of ethylene carbonate to polyester poly (Formrex® 11-225, a hydroxyl functional diethylene glycol adipate, MW=500, manufactured by Witco) is heated with stirring under a nitrogen atmosphere for 3.5 hours at 175° C. using 0.5 percent sodium stannate trihydrate as catalyst to give 97.3 percent ethylene carbonate conversion to a poly(alkylene carbonate) polyol with 18.7 percent carbon dioxide. The catalyst was removed as in Example 1.

Workup

  1. temperatureis heated

Sources & evidence

ORD record
ord-ee50f29d4fd6404fa60c2a7c438397ec
Source dataset
uspto-grants-1987_11
Patent number
US04709069

Linked notes

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