Process for producing aliphatic oligocarbonate diols

Details Process for producing aliphatic oligocarbonate diols Process for producing aliphatic oligocarbonate diols

2006-09-26

2006-09-26

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

Reexamination Certificate

active

07112693

ABSTRACT:
The present invention relates to a process for producing an aliphatic oligocarbonate diol comprising a) reacting an aliphatic diol with dimethyl carbonate at an elevated pressure in a reaction mixture, and b) subsequently removing unreacted methanol and dimethyl carbonate under a reduced pressure to uncap the terminal OH groups.

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