Epoxy-terminated polyisobutylene polydimethylsiloxane compositions

An antifoaming compsn comprises (A) a polymethylsiloxane having a viscosity greater than 2 cS at 25[deg]C; and (B) a polyisobutylene oligomer having Mn of 200-3,000 and having at least one end terminated with an epoxy-contg gp; the wt ratio (A):(B) is 1:99-99:1. Also claimed is a method for defoamin...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	POPA, PAUL JOSEPH, KENNAN, LINDA DENISE, GENTLE, THOMAS MATTHEW, HAUENSTEIN, DALE EARL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An antifoaming compsn comprises (A) a polymethylsiloxane having a viscosity greater than 2 cS at 25[deg]C; and (B) a polyisobutylene oligomer having Mn of 200-3,000 and having at least one end terminated with an epoxy-contg gp; the wt ratio (A):(B) is 1:99-99:1. Also claimed is a method for defoaming an aq foaming system comprising adding the above compsn to the system.