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Non-silicone surfactants for polyurethane or polyisocyanurate foam containing halogenated olefins as blowing agents

A surfactant, polysiloxane technology, used as a surfactant component of hydrocarbons, alkane surfactants and tertiary amines, chlorine, 1, rigid polyurethane and polyisocyanurate foams and their preparation, fluorine In the field of hydrocarbons, it can solve the problems of low foam quality, collapsed foam, poor foam structure, etc.

Inactive Publication Date: 2010-11-24
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the polyol premix composition is aged prior to treatment with the polyisocyanate, the foam is of lower quality and may even collapse during foam formation
[0010] The problem has been found to be caused by the reaction of certain amine catalysts with certain hydrohaloolefins including HFO-1234ze and HFCO-1233zd, resulting in partial decomposition of the blowing agent
It has been found that after blowing agent decomposition, the molecular weight of commonly used silicone surfactants is detrimentally altered, resulting in poor foam structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The polyol (Part B) formulation was made from: 100 parts by weight polyol blend; 1.5 parts by weight LK-443, a non-polysiloxane nonionic surfactant available from Air Products Corporation 3 parts by weight water; 8 parts by weight triethyl phosphate flame retardant; 0.7 parts by weight N,N-dimethylcyclohexylamine (sold as Polycat 8 by Air Products) catalyst; and 8 parts by weight trans-HFO-1234ze Foaming agent. A good quality foam with a fine and regular cell structure was produced when the all B-Part composition was freshly prepared and combined with 217.3 parts by weight of Lupranate M20S polyisocyanate. Foam reactivity is the slow response characteristic of cast-in-place foam. The full B-side composition (119.7 parts) was then aged at 120°F for 62 hours and then combined with 217.3 parts of M20S Iso polyisocyanate to make a foam. The foam was normal in appearance with no collapsed foam. No discoloration during aging was noted. This test demonstrates that good foa...

Embodiment 2

[0063] The polyol (Part B) formulation was made from: 100 parts by weight polyol blend; 1.5 parts by weight LK-443, a non-polysiloxane nonionic surfactant available from Air Products Corporation 1.5 parts by weight of water; 8.0 parts by weight of diisopropylethylamine catalyst and 8 parts by weight of trans-HFO-1234ze blowing agent. A good quality foam with a fine and regular cell structure was produced when the all B-Part composition was freshly prepared and combined with 120.0 parts by weight Lupranate M20S polyisocyanate. Foam reactivity is a characteristic of cast-in-place foam. The full B-side composition (119.0 parts) was then aged at 120°F for 62 hours and then combined with 120.0 parts of M20SIso polyisocyanate to form a foam. The foam was normal in appearance with no collapsed foam. No discoloration during aging was noted.

[0064] These examples demonstrate that the use of non-silicone nonionic surfactants produces polyol premixes that are demonstrated to be stab...

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Abstract

The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a surfactant component which comprises a non-silicone surfactant and is substantially absent of a silicone surfactant, and a tertiary amine catalyst.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of co-pending Provisional Patent Application Serial No. 60 / 979,477, filed October 12, 2007, which is incorporated herein by reference. Background of the invention [0003] field of invention [0004] The present invention relates to polyurethane and polyisocyanurate foams and methods for their preparation. More particularly, the present invention relates to rigid polyurethane and polyisocyanurate foams and methods for their preparation, said foams being characterized by a fine uniform cell structure with little or no collapse. The foam is made with an organic polyisocyanate and a polyol premix composition comprising a combination of: a blowing agent, which is preferably a hydrohaloolefin; a polyol; a surfactant set A component comprising a non-silicone surfactant and substantially no silicone surfactant; and a tertiary amine catalyst. [0005] Related technical description [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/40C08J9/04C07C17/08
CPCC08L61/06C08G2101/0058C08G18/7664C08G2170/60C08J9/146C08G2350/00C08G2105/02C08J2375/08C08G18/1816C08G18/40C08G18/283C08G2110/0058C08G2115/02C08G18/10C08G18/18C08J9/04C08J9/14C08L75/04
Inventor D·J·威廉斯M·范德皮伊
Owner HONEYWELL INT INC