Siloxane-containing pullulan and method for the preparation ther

Details Siloxane-containing pullulan and method for the preparation ther Siloxane-containing pullulan and method for the preparation ther

1995-11-07

1996-12-10

Shaver, Paul F.

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

Organic compounds

Silicon containing

556420, 53612312, C07F 710

Patent

active

055832440

ABSTRACT:
Disclosed is a novel organosilicon-containing derivative of pullulan of which an organopolysiloxane moiety having a silethylene linkage is bonded to the glucose residue of pullulan through a urethane linkage. Different from conventional organopolysiloxane-modified pullulans, the inventive derivative is stable against attack of water and exhibits unique properties as a combination of the properties inherent in pullulan and in silicones. The organosilicon-containing pullulan of the invention can be easily prepared under mild reaction conditions by reacting an isocyanato group-containing organopolysiloxane with the glucosic hydroxy groups of pullulan.

REFERENCES:
patent: 3931146 (1976-01-01), Kato et al.
patent: 5256706 (1993-10-01), Carpenter et al.

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