MULTIPLE RELEASE MOLD COATING

A method for molding articles where a composition is used to treat at least one shape determining face of a mold to impart durable release characteristics to said face which last through multiple molding cycles. The compositions comprise by weight 20 parts of primarily hydroxyl endblocked polydimeth...

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Bibliographische Detailangaben
Hauptverfasser:	LOPES, WILLIAM HOHN, KLOSOWSKI, JEROME MELVIN
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for molding articles where a composition is used to treat at least one shape determining face of a mold to impart durable release characteristics to said face which last through multiple molding cycles. The compositions comprise by weight 20 parts of primarily hydroxyl endblocked polydimethylsiloxane, 2 to 10 parts of alkyltriacetoxysilane, to 80 parts of nonreactive organic solvent, and, optionally, 0.001 to 2 parts organometallic catalyst.