Curing catalyst

The curing of organo-modified polysiloxane resins obtained by partial reaction of alkoxypolysiloxanes with organic polyols is accelerated by a catalyst prepared by reacting from 1 to 2 mol of a polycarboxylic anhydride with 1 mol of a compound of the formula in which R and R are identical or differe...

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Hauptverfasser:	SCHAMBERG,ECKEHARD,DR, PRIESCH,MANFRED, RAU,HARALD, KOERNER,GOETZ,DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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creator	SCHAMBERG,ECKEHARD,DR PRIESCH,MANFRED RAU,HARALD KOERNER,GOETZ,DR
description	The curing of organo-modified polysiloxane resins obtained by partial reaction of alkoxypolysiloxanes with organic polyols is accelerated by a catalyst prepared by reacting from 1 to 2 mol of a polycarboxylic anhydride with 1 mol of a compound of the formula in which R and R are identical or different and are groups, and R is an alkylene, cycloalkylene or phenylene group, subsequently reacting this intermediate with from 0.4 to 6 mol of Ti(OR )4 (R is an alkylene group having 1 to 6 carbon atoms) with removal of the alcohol R OH, it being possible to terminate the reaction after at least 25% of the theoretical amount of R OH has been liberated. The catalyst according to the invention is stable to hydrolysis. If it is used for the curing of thermocurable polyester-polysiloxane resins, coatings are obtained which have high hydrolysis resistance and weathering resistance.
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The catalyst according to the invention is stable to hydrolysis. 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The catalyst according to the invention is stable to hydrolysis. 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The catalyst according to the invention is stable to hydrolysis. If it is used for the curing of thermocurable polyester-polysiloxane resins, coatings are obtained which have high hydrolysis resistance and weathering resistance.</abstract><oa>free_for_read</oa></addata></record>
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subjects	CHEMISTRY COMPOSITIONS BASED THEREON METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
title	Curing catalyst
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