Aliphatic oligocarbonate polyols prepared in the presence of...

Details Aliphatic oligocarbonate polyols prepared in the presence of... Aliphatic oligocarbonate polyols prepared in the presence of...

2005-05-17

2005-05-17

Saeed, Kamal (Department: 1626)

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

Organic compounds

Esters having the thiocarboxylate group, -cx-, wherein the...

Reexamination Certificate

active

06894182

ABSTRACT:
The present invention relates to aliphatic oligocarbonate polyols prepared by the transesterification of organic carbonates with aliphatic polyols in the presence of at least one catalyst which contains i) at least one rare earth metal or compounds thereof or ii) at least one metal of group III B of the periodic table of the elements or compounds thereof or iii) mixtures of i) and ii) and to a process for preparing the same.

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