Main > POLYMERS > Oligomer > Carbonate Oligomer > Aliphatic Diol > Di-Me Carbonate/Diol TransEster.

Product DE. B

PATENT ASSIGNEE'S COUNTRY Germany
UPDATE 12.00
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS (a) Title transEster. in presence of soluble catalyst in a gas-liquid countercurrent apparatus to form an oligocarbonate until the degree of conversion of initial di-Me carbonate is > 80%
(b) Removing MeOH & traces of di-Me carbonate in an apparatus which generates gas bubbles in the oligocarbonate until the degree of capping of terminal -OH with methoxycarbonyl groups is < 5%
PATENT PHOTOCOPY Available on request

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