PROCESSO PARA PREPARAR UM PRODUTO DE DISPERSAO DE POLIURETANA E/OU POLIUREIA,DISPERSAO,DISPERSAO DE PARTICULAS DE POLIURETANA E/OU POLIUREIA E PRODUTOS DE REACAO DE UM POLIISOCIANATO

Polyurethane and/or polyurea dispersions are prepared by reacting certain coreactants with a polyisocyanate in the presence of a preformed polyurethane and/or polyurea dispersion. The resulting products are especially useful to prepare flexible polyurethane foams which exhibit low shrinkage. In addi...

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Bibliographische Detailangaben
Hauptverfasser:	JACK M. PAL, KAREN TAN, JAMES P. COSMAN
Format:	Patent
Sprache:	por
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Polyurethane and/or polyurea dispersions are prepared by reacting certain coreactants with a polyisocyanate in the presence of a preformed polyurethane and/or polyurea dispersion. The resulting products are especially useful to prepare flexible polyurethane foams which exhibit low shrinkage. In addition, polyurethane and/or polyurea dispersions having a bimodal particle size distribution are disclosed.