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COPOLYMERS WITH POLYESTER POLYCARBONATE BLOCKS CONTAINING POLY(CAPROLACTONE) SEGMENTS, AND USE THEREOF FOR THE PREPARATION OF BIODEGRADABLE MATRICES
COPOLYMERS WITH POLYESTER POLYCARBONATE BLOCKS CONTAINING POLY(CAPROLACTONE) SEGMENTS, AND USE THEREOF FOR THE PREPARATION OF BIODEGRADABLE MATRICES
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机译:含有聚(己内酯)段的聚酯聚酯碳酸酯嵌段共聚物,并用于制备可生物降解的基质
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摘要
The invention relates to block copolymers of general formula (I) -[-O-CO-O-A-O-CO-O-B-]a-(I) where a is an integer between 2 and 300 inclusive; A and B, which may be the same or different, are blocks which can be obtained by reaction between a bis(chloroformate) of oligomeric poly(caprolactone) and a polyester residue of formula (II) HO-[-R1-CO-O]x-[-R2-CO-O-]y-H (II) where R1 and R2, which may be the same or different, are each an aliphatic hydrocarbon residue with a linear or branched chain having from 1 to 4 carbon atoms; x and y are integers from 1 to 50, in any possible ratio from 0 to 1; the groups -R1-COO- and -R2-COO- being randomly distributed in the polyester residue.
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