Basf Corporation

Robert E Riley

Jimmy L Patterson

Walter R White, Iii

Joe C Wilson

James S Dailey

David D Peters

James A Mullins

Anthony G Schaefer

Thirumurti L Narayan

Jim Patterson

Thirumurti Naravan

Walter R White

The present invention discloses a polyol resin composition containing a polyether polyol blend, a polyester polyol, and a hydrocarbon blowing agent. The polyether polyol blend has at least a diamine initiated polyol, a propylene oxide polyol, and a polyethylene terephthalate initiated polyol having a functionality of from 2.3 to 3.0. The polyester polyol is preferably a phthalic anhydride initiated polyester polyol. The blowing agent is a C -C hydrocarbon. Also disclosed is a method of producing a polyurethane foam combining the above mentioned polyol resin and an isocyanate component.

Polyol composition containing a hydrocarbon blowing agent

The present invention discloses a phase stable polyol blend composition containing a sucrose and dipropylene glycol co-initiated propylene oxide polyether polyol, a polyester polyol, a compatibilizing agent and a hydrocarbon blowing agent. The polyester polyol is preferably a phthalic anhydride-initiated polyester polyol. The compatibilizing agent is a butanol-initiated propylene oxide polyether surfactant.

Phase stable polyol composition containing hydrocarbon as the blowing agent

A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C -C hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

Stable polyester polyol composition

A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C -C hydrocarbon blowing agent, and an alkylene oxide modified silicone glycol compatibilizing agent having an HLB of from about 5 to about 8 is disclosed. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties. An alkylene oxide and isocyanate modified silicone glycol compatibilizing agent is also disclosed.

Alkylene oxide modified silicone glycol compatibilizing agents for stable polyester polyol compositions

A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C,-C,hydrocarbon blowing agent, and an alkylene oxide modified silicone glycol compatibilizing agent having an HLB of from about 5 to about 8 is disclosed. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties. An alkylene oxide and isocyanate modified silicone glycol compatibilizing agent is also disclosed.

A process for producing a rigid foam based on isocyanate comprises reacting an organic and/or modified organic polyisocyanate with a polyol composition and, optionally, a relatively low molecular weight chain extender or crosslinker in the presence of a catalyst, and, optionally, further auxiliaries and/or additives, wherein the polyol composition comprises a phthalic anhydride-initiated polyester polyol, a blowing agent comprising C,-C,hydrocarbon, and a fatty acid or fatty alcohol ethoxylate compatibilizing agent. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

Process for making isocyanate-based rigid foam

An isocyanate-based rigid foam comprising the reaction product of an organic and/or modified organic polyisocyanate, a resin blend and, optionally, a relatively low molecular weight chain extender or crosslinker in the presence of a catalyst, and, optionally, further auxiliaries and/or additives, wherein the resin blend comprises a phthalic anhydride-initiated polyester polyol, a blowing agent comprising a C,-C,hydrocarbon, and a fatty acid or fatty alcohol ethoxylate compatibilizing agent. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

Isocyanate-based rigid foam

Mixtures of medium viscosity polymeric MDI and HCFC-22 have unexpectedly low vapor pressure, rendering such mixtures suitable for the preparation of polyurethane and polyisocyanate foams.

Blowing agent-containing polymeric MDI compositions

Polyurethane/polyisocyanurate rigid foams having low thermal conductivity are prepared from isocyanate-terminated quasi-prepolymers prepared from polyester polyols derived from phthalic anhydride or from the transesterification of polyethylene terephthalate scrap.

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Brownstown, MI, United States of America

Robert E Riley