Blowing agent composition of hydrochlorofluoroolefin
A blowing agent for thermosetting foams is disclosed. The blowing agent is predominately the trans isomer of the hydrochlorofluoroolefin (HCFO) HFCO-1233zd alone or in combination with a hydrofluoroolefin (HFO), hydrofluorocarbon (HFC), hydrochlorofluoroolefin (HCFO), a hydrocarbon. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
1. A polyurethane foam composition comprising a polymer blowing agent composition comprising the hydrochlorofluoroolefin 1233zd wherein more than about 70 wt% of said hydrochiorofluoroolefin 1233zd is the trans stereoisomer of hydrochiorofluoroolefin 1233zd wherein said polyurethane foam composition exhibits a k-factor between about 0.1250 BTU, in/ft 2 , hr,° F. and about 0.1650 BTU, in/ft 2 ,hr,° F. when tested in accordance with ASTM C518 at temperatures between 18° F. and 104° F., after aging for one month at ambient temperature.
2. The polyurethane foam composition of claim 1 wherein said hydrochiorofluoroolefin 1233zd comprises about 90 wt % or more trans stereoisomer.
3. The polyurethane foam composition of claim 1 wherein said hydrochiorofluoroolefin 1233zd comprises about 96.5wt % or more trans stereoisomer.
4. The polyurethane foam composition of claim 1 , further comprising a hydrofluorocarbon.
5. The polyurethane foam composition of claim 4 wherein said hydrofluorocarbon is slected from the group consisting of difluoromethane (HFC32); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,1-trifluoroethane (HFC143a); 1,2,2-tetrafluorothane (HFC134); 1,1,1,2-tetrafluoroethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoropropane (HFC245fa); 1,1,1,3,3-pentafluorobutane (HFC365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC4310mee).
6. The polyurethane foam composition of claim 1 , further comprising a hydrofluoroolefin.
7. The polyurethane foam composition of claim 6 wherein said hydrofluoroolefin is selected from the group consisting of tetrafluoropropenes; trifluoropropenes; tetrafluorobutene isomers; penta.fluorobutene isomers; hexafluorobutene isomers; heptafluorobutene isomers; heptafluoropentene isomers; octafluoropentene isomers; and nonafluoropentene isomers.
8. The polyurethane foam composition composition of claim 1 , further comprising an additive selected from the group consisting of hydrocarbons, C1 to C5 alcohols, C1 to C4 aldehydes, C1 to C4 ketones, C1 to C4 ethers, carbon dioxide, and C1 to C4 diethers.
9. The polyurethane foam composition of claim 8 wherein said hydrocarbon is selected from the group consisting of pentane isomers and butane isomers.
10. The polyurethane foam composition of claim 1 , further comprising a hydrochlorofluoroolefin other than HCFC-1233zd.