Abstract:
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.
Abstract:
Disclosed are polyol premix compositions, and foams formed therefrom, which comprise a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a catalyst system that includes a bismuth-based metal catalyst. Such catalysts may be used alone or in combination with an amine catalyst and/or other non-amine catalysts.
Abstract:
Disclosed are bowing agent compositions, foamable compositions, foams, foaming methods and/or foamed articles comprising one or more C2 to C6 fluoroalkenes, more preferably one or more C3 to C5 fluoroalkenes, and even more preferably one or more compounds having Formula I as follows: XCF z R 3-z (I) where X is a C 1 , C 2 , C 3 , C 4 , or C 5 unsaturated, substituted or unsubstituted radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3, it generally being preferred that the fluoroalkene of the present invention has at least four (4) halogen substituents, at least three of which are F and even more preferably none of which are Br.
Abstract:
In certain non-limiting, aspects, the present invention relates to storage stable premixes of a polyol suitable for polyurethane or polyisocyanurate foam preparation having, at least, 1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm) as the blowing agent and optional one or more additional additives and/or auxillary blowing agents in amounts suitable for polyurethane or polyisocyanurate foam preparation.
Abstract:
Disclosed are methods of forming an expanded polystyrene foam comprising: (a) providing a foamable resin comprising polystryrene and a blowing agent comprising (i) transHFO-1234ze and (ii) transHCFO-1233zd; and (b) extruding said foamable composition through a dye.
Abstract:
The present invention relates to building envelopes and methods of forming a building envelope comprising foams having a polymeric foam structure including a plurality of closed cells therein and trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) contained in at least a portion of said cells.
Abstract:
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.
Abstract:
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.
Abstract:
The instant invention relates to compositions comprising a blend 1-chloro-3,3,3-trifluoropropene (HCFO 1233zd) and 1,1-dichloro-1-fluoroethane (HCFC 141b). In particular, the instant invention relates to blowing agents and foamable compositions containing at least such a blend, as well as solvents containing such a blend.
Abstract:
A heat transfer system and method for controlling heat transfer to and from a container having thermal insulation disposed with respect to said container or compartment so as to inhibit the flow of heat into and/or out of the compartment, said insulation comprising a polymeric material having closed cells therein wherein said cells are formed from and/or contain a haloalkene according to Formula IA: where each R is independently Cl, F, H, or CF 3 , provided that the total number of carbon atoms is either 3 or 4, R' is (CR 2 ) n Y, Y is CF 3 and n is 0 or 1; and a heat transfer system for adding and/or removing heat from the compartment or container by use of a heat transfer fluid comprising a haloalkene Formula IB: where each R is independently Cl, F or H R' is (CR 2 ) n Y, Y is CF 3 and n is 0 or 1.