Storage stable foamable compositions containing 1,1,1,4,4,4-hexafluoro-2-butene

1. A method of forming a foam comprising;

(a) forming at a first point in time a storage stable premix for foam manufacture, said storage stable premix composition comprising: (i) from about 5% to about 25% by weight, based on the total of all components in said premix, of a blowing agent composition comprising: from about 5 wt % to about 90 wt %, based on the total of the blowing agent(s) in said premix, cis-1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm), and water, wherein said water is present in the premix in an amount of greater than 1% by weight based on the total of all components in said premix, (ii) from about 60% to about 95% by weight, based on the total of all components in said premix, of one or more polyether polyols, (iii) one or more surfactants, and (iv) at least one tertiary amine catalyst;

(b) forming a foam from said storage stable premix at a second point in time at least 7 days after said first point in time, wherein said foam has a gel time increase of not greater than about 10% relative to the gel time of said foam formed at said first point in time.

2. The method of claim 1 , wherein the amount of water in the premix is up to about 7% by weight.

3. The method of claim 1 , wherein the blowing agent further comprises a co-blowing agent selected from the group consisting of 1-chloro-3,3,3-trifluoropropene, 1,3,3,3-tetrafluoropropene, organic acids that produce CO 2 and/or CO, a pentane, a butane, methylal, methyl formate, 1,1,1,3,3-pentafluorobutane (HFC-365mfc); 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,3,3-pentafluoropropane (HFC-245fa); trans-1,2-dichloroethylene; 1,1-difluoroethane (HFC-152a); and combinations thereof.

4. The method of claim 1 , wherein said storage stable premix catalyst further comprises a non-amine catalyst.

5. The method of claim 4 , wherein said non-amine catalyst is selected from the group consisting of bismuth nitrate, lead 2-ethylhexoate, lead benzoate, lead naphthanate, ferric chloride, antimony trichloride, antimony glycolate, tin salts of carboxylic acids, dialkyl tin salts of carboxylic acids, potassium acetate, potassium octoate, potassium 2-ethylhexoate, potassium salts of carboxylic acids, zinc salts of carboxylic acids, zinc 2-ethylhexanoate, glycine salts, alkali metal carboxylic acid salts, and sodium N-(2-hydroxy-5-nonylphenol)methyl-N-methylglycinate, tin (II) 2-ethylhexanoate, dibutyltin dilaurate, and combinations thereof.

6. The method of claim 1 , wherein said surfactant comprises a silicone surfactant.

7. The method of claim 1 , wherein the foam is formed from said storage stable premix at a second point in time at least 14 days after said first point in time, wherein said premix is formed under conditions effective to ensure that substantially no reaction occurs between said 1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm) and said catalyst for said at least said 14 days.

8. The method of claim 1 , wherein the foam is formed from said storage stable premix at a second point in time at least 30 days after said first point in time, wherein said premix is formed under conditions effective to ensure that substantially no reaction occurs between said 1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm) and said catalyst for said at least said 30 days.

9. The method of claim 1 , wherein the amine catalyst is selected from the group consisting of N,N,N′,N″,N″-pentamethyldiethyltriamine, N,N-dicyclohexylmethylamine; N,N-ethyldiisopropylamine; N,N-dimethylcyclohexylamine; N,N-dimethylisopropylamine; N-methyl-N-isopropylbenzylamine; N-methyl-N-cyclopentylbenzylamine; N-isopropyl-N-sec-butyl-trifluoroethylamine; N,N-diethyl-(α-phenylethyl)amine, N,N,N-tri-n-propylamine, dicyclohexylamine; t-butylisopropylamine; di-t-butylamine; cyclohexyl-t-butylamine; di-sec-butylamine, dicyclopentylamine; di-(α-trifluoromethylethyl)amine; di-(α-phenylethyl)amine; triphenylmethylamine; 1,1-diethyl-n-propylamine; dimorpholinodiethylether; N-ethylmorpholine; N-methylmorpholine; bis(dimethylaminoethyl) ether; imidizole; n-methylimidazole; 1,2-dimethylimidazole; dimorpholinodimethylether; N,N,N′,N′,N″,N″-pentamethyldiethylenetriamine; N,N,N′,N′,N″,N″-pentaethyldiethylenetriamine; N,N,N′,N′,N″,N″-pentamethyldipropylenetriamine; bis(diethylaminoethyl) ether; bis(dimethylaminopropyl) ether; and combinations thereof.

10. The method of claim 4 , wherein said non-amine catalyst is selected from the group consisting of bismuth nitrate, lead 2-ethylhexoate, lead benzoate, lead naphthanate, ferric chloride, antimony trichloride, antimony glycolate, tin salts of carboxylic acids, dialkyl tin salts of carboxylic acids, potassium acetate, potassium octoate, potassium 2-ethylhexoate, potassium salts of carboxylic acids, zinc salts of carboxylic acids, zinc 2-ethylhexanoate, glycine salts, alkali metal carboxylic acid salts, and sodium N-(2-hydroxy-5-nonylphenol)methyl-N-methylglycinate, tin (II) 2-ethylhexanoate, dibutyltin dilaurate, and combinations thereof.

11. The method of claim 10 , wherein said non-amine catalyst is a quaternary ammonium carboxylate.

12. The method of claim 4 , wherein said surfactant comprises a silicone surfactant.

13. The method of claim 4 , wherein the foam is formed from said storage stable premix at a second point in time at least 14 days after said first point in time, wherein said premix is formed under conditions effective to ensure that substantially no reaction occurs between said 1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm) and said catalyst for said at least said 14 days.

14. The method of claim 4 , wherein the foam is formed from said storage stable premix at a second point in time at least 30 days after said first point in time, wherein said premix is formed under conditions effective to ensure that substantially no reaction occurs between said 1,1,1,4,4,4-hexafluoro-2-butene (1336mzzm) and said catalyst for said at least said 30 days.

15. The method of claim 1 wherein said foam is a polyurethane or polyisocyanurate foam.

16. The method of claim 4 wherein said foam is a polyurethane or polyisocyanurate foam.