Methods for making foams using blowing agents comprising unsaturated fluorocarbons

Abstract

Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.

1 - 26 . (canceled) 
     
     
         27 . A method of producing thermoset foams, comprising the steps of
 blending at least one active hydrogen containing compound and at least one blowing agent to form a premix, wherein said blowing agent comprises Z—CF3CH═CHCF3, and reacting said premix with an A side mixture, said A side mixture comprising at least one organic polyisocyanate.   
     
     
         28 . The method of  claim 27 , wherein the at least one organic polyisocyanate, the at least one active hydrogen-containing compound, and the blowing agent of  claim 27  are blended simultaneously. 
     
     
         29 . The method of  claim 27 , wherein the reacting step is performed in the presence of at least one catalyst. 
     
     
         30 . The method of  claim 28 , wherein the B side further comprises at least one auxiliary component, said auxiliary component selected from the group consisting of a surfactant, a flame retardant, a preservative, a colorant, an antioxidant, a reinforcing agent, a filler, an antistatic agent, or a combination thereof. 
     
     
         31 . The method of  claim 30 , wherein the at least surfactant is present in a range of from about 0.2 to about 5 parts surfactant per 100 parts by weight polyol. 
     
     
         32 . The method of  claim 31 , wherein the at least one surfactant is a liquid or solid organosilicone compound, a glycol ether, a tertiary amine or alkanolamine salt of a long chain alkyl acid sulfate ester, an alkyl sulfonic ester, or an alkyl arylsulfonic acid. 
     
     
         33 . The method of  claim 30 , wherein the at least one catalyst is present in a range of from about 0.1 to about 5 parts catalyst per 100 parts by weight of polyol. 
     
     
         34 . The method of  claim 27 , wherein the thermoset foam is a spray foam. 
     
     
         35 . A composition comprising a fluoroolefin selected from the group consisting of Z—CF3CH═CHCF3 and E-CF3CH═CHCF3, and carbon dioxide. 
     
     
         36 . A foam premix comprising:
 a polyol and a blowing agent,   wherein the blowing agent agent comprises a fluoroolefin selected from the group consisting of E-CF3CH═CHCF3, Z—CF3CH═CHCF3, and mixtures thereof.   
     
     
         37 . The foam premix of  claim 36 , further comprising an additional component, wherein the additional component is a surfactant or a catalyst. 
     
     
         38 . The foam premix of  claim 37 , wherein the surfactant is a silicone based surfactant or a glycol ether. 
     
     
         39 . The foam premix of  claim 37 , wherein the catalyst is an amine or an organometallic catalyst 
     
     
         40 . The foam premix of  claim 36 , further comprising wherein the premix is shelf stable and capable of reacting and foaming under the proper conditions of forming a foam under proper conditions. 
     
     
         41 . The foam premix of  claim 37 , wherein the surfactant is a liquid or solid organosilicone compound, a glycol ether, a tertiary amine or alkanolamine salt of a long chain alkyl acid sulfate ester, an alkyl sulfonic ester, or an alkyl arylsulfonic acid. 
     
     
         42 . The method of  claim 37 , wherein the at least one catalyst is present in a range of from about 0.1 to about 5 parts catalyst per 100 parts by weight of polyol.