PROCESS FOR THE PREPARATION OF A POLYTHIOETHERSULFIDE
Process for the production of a liquid mercapto-terminated polythioethersulfide comprising the step of reacting, at a temperature in the range 0-100° C. and in the presence of a catalyst:at least one compound selected from the group consisting of (i) dimercapto-dioxa-alkanes (DMDAs) and (ii) glycol...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
14.10.2020
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Subjects | |
Online Access | Get full text |
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Summary: | Process for the production of a liquid mercapto-terminated polythioethersulfide comprising the step of reacting, at a temperature in the range 0-100° C. and in the presence of a catalyst:at least one compound selected from the group consisting of (i) dimercapto-dioxa-alkanes (DMDAs) and (ii) glycol di(mercapto carboxylic acid ester)s (GDMEs),at least one dimercapto-dialkyl sulfide (DMDS)at least one di-epoxide, andoptionally at least one branching agent selected from compounds having at least three terminal groups selected from epoxy and mercapto groups,wherein the molar ratio (DMDA+GDME)/DMDS is in the range 1.1-4.0. |
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Bibliography: | Application Number: EP20180808393 |