Polymerization of beta-substituted-beta-propiolactones initiated by alkylzinc alkoxides
First Claim
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1. A method of preparing a polyester comprising polymerizing at least one β
- -substituted-β
-propiolactone in the presence of an initiating amount of alkylzinc alkoxide for a reaction time and temperature sufficient to produce the polyester, wherein the alkylzinc alkoxide has the structure R1 ZnOR2 wherein R1 and R2 are independently a C1, C2, C3, C4, C5, C6, C7, C8, C9, or C10 alkyl.
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Abstract
The present invention relates to a method of preparing a polyester comprising polymerizing at least one β-substituted-β-propiolactone in the presence of an initiating amount of alkylzinc alkoxide in bulk or in solvent for a reaction time and temperature sufficient to produce said polyester.
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26 Claims
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1. A method of preparing a polyester comprising polymerizing at least one β
- -substituted-β
-propiolactone in the presence of an initiating amount of alkylzinc alkoxide for a reaction time and temperature sufficient to produce the polyester, wherein the alkylzinc alkoxide has the structure R1 ZnOR2 wherein R1 and R2 are independently a C1, C2, C3, C4, C5, C6, C7, C8, C9, or C10 alkyl. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
- -substituted-β
Specification