Honeywell International Inc.

Clifford P Gittere

David John Williams

Mary Charlotte Bogdan

James M Bowman

Yiu Keung Ling

Michael Van Der Puy

Andrew Joseph Poss

David J Williams

Michael A Ross

Ronald Grossman

Mary C Bogdan

The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to closed-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 silicone surfactant, and a non-amine catalyst used alone or in combination with an amine catalyst.

Catalysts for polyurethane foam polyol premixes containing halogenated olefin blowing agents

The present invention relates to mixtures of 1,1,1,4,4,4-hexafluorobutene (1336mzzm) and 1-chloro-3,3,3-trifluoropropene (1233zd). The blends are useful as blowing agents for polymer foam, solvents, aerosol propellants and heat transfer media.

Mixtures containing 1.1.1.4.4.4.-hexafluorobutene and 1-chloro-3.3.3-trifluoropropene

Mixtures containing 1,1,1,3,3,3-hexafluorobutene and 1-chloro-3,3,3-trifluoropropene

Mixtures containing 1,1,1,4,4,4-hexafluorobutene and 1-chloro-3,3,3-trifluoropropene

The invention provides foam forming methods that comprise: (a) preparing a foamable system comprising at least one hydrohaloolefin; and (b) ensuring either (i) the substantial absence of long-term decomposition-inducing contact between said hydrofluoroolefin and an amine-containing catalyst; (ii) that an effective amount of surfactant is available in the system under conditions which prevent long term exposure of the surfactant to a long-term decomposition reaction environment; or (iii) a combination of (i) and (ii). Related methods, foamable systems and foams are also disclosed. Preferred embodiments provide polyurethane and polyisocyanurate foams and methods for the preparation thereof, including closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The preferred foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are preferably produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, a catalyst and is further characterized by being substantially free of added water.

Foams and foamable compositions containing halogenated olefin blowing agents

The present invention relates to mixtures of 1,1,1,3,3,3-hexafluorobutene (1336mzzm) and 1-chloro-3,3,3-trifluoropropene (1233zd). The blends are useful as blowing agents for polymer foam, solvents, aerosol propellants and heat transfer media.

Polyurethane foam premixes containing halogenated olefin blowing agents and foams made from same

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Amherst, NY, United States of America

Clifford P Gittere