Delayed action catalysts and methods for polymerizing macrocyclic oligomers

Cyclic oligomers containing ester linkages are polymerized in the presence of a dialkyltin di(carboxylate) catalyst. The catalyst provides a latency period followed by a rapid polymerization to form a high molecular weight polymer.

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Bibliographic Details
Main Authors SAMMLER ROBERT L, TIMMERS FRANCIS J, KUHLMAN ROGER L
Format Patent
LanguageEnglish
Published 29.12.2005
Edition7
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Cyclic oligomers containing ester linkages are polymerized in the presence of a dialkyltin di(carboxylate) catalyst. The catalyst provides a latency period followed by a rapid polymerization to form a high molecular weight polymer.
Bibliography:Application Number: US20050154015