TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The trifluoromonochloropropene compound comprises a compound of formula XCFzR3-z. It comprises CF3CCl=CH2 (HFCO-1233xf), or preferably CF3CH=CHCl (HFCO-1233zd).X=2-5C unsaturated, optionally, radical;R=Cl, F, Br, I or H;andz=1-3.Preferred Property: The blowing agent has a Global Warming Potential (GWP) of not greater than 150, and an Ozone Depleting Potential (ODP) of not greater than 0.05. Preferred Component: The adjuvant comprises co-blowing agent(s). The co-blowing agent contains alcohols of 2C alcohols, 3C alcohols and/or 5C alcohols. It contains hydrofluorocarbons (HFCs) comprising 2-4C HFC, 3C HFC, and pentafluorinated 3C HFC that comprises CF3CH2CF2H (HFC-245fa). The blowing agent has hydrocarbons (HCs) comprising 3-6C HCs. The HFCs are difluoromethane (HFC-32), fluoroethane (HFC- 161), difluoroethane (HFC-152), trifluoroethane (HFC-143), tetrafluoroethane (HFC- 134), pentafluoroethane (HFC-125), pentafluoropropane (HFC-245), hexafluoropropane (HFC-236), heptafluoropropane (HFC-227ea), pentafluorobutane (HFC-365), hexafluorobutane (HFC-356), and/or all their isomers. The co-blowing agent comprises HC(s) comprising greater than or equal to 2 of isopentane, normal pentane, cyclopentane, butane and isobutane. The co-blowing agent(s) is greater than or equal to 2 of water, CO2, chlorofluorocarbons (CFCs), hydrochlorocarbons (HCCs), hydrochlorofluorocarbons (HCFCs), 1-5C alcohols, 1-4C aldehydes, 1-4C ketones, and 1-4C ethers. The blowing agent of the foamable composition includes 1-5C alcohols and/or 1-4C ethers, ethanol, dimethyl ether and/or diethyl ether, or methyl formate. Preferred Composition: The blowing agent contains 1-99 (preferably 40-90) wt.% of the trifluoromonochloropropene. It contains 30-95 (preferably 40-90) wt.% HFCO-1233zd, and 5-95 (preferably 5-65) wt.% co-blowing agent. The co-blowing agent comprises water (H2O) present at 5-65 (preferably 10-20) wt.%, carbon dioxide (CO2) present at 5-60 (preferably 40-50) wt.%, alcohol(s) present at 5-40 (preferably 15-25) wt.%, HFCs present at 5-80 (preferably 25-75) wt.%, and HCs present at 5-80 (preferably 20-60) wt.%.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The foam forming agent comprises thermoset foam component(s) comprising composition capable of forming polyurethane foam, polyisocyanurate foam, or phenolic foam. It comprises thermoplastic foam component(s) of thermoplastic polymer, or polyolefin. It is a thermoplastic or thermoset. The polyolefin is monovinyl aromatic compounds, ethylene-based compounds, and/or propylene-based polymers. It is polystyrene, ethylene homopolymers, polypropylene, and/or polyethyleneterepthalate (PET). The foamable composition comprises isocyanate or polyol. The foamable composition includes catalysts, surfactants, flame retardants, and/or colorants. Preferred Method: The method includes reacting the foamable composition under conditions to form a cellular structure. Preferred Property: The foam has a K-factor of not greater than 0.16 (preferably not greater than 0.12) and not greater than 0.16 (preferably not greater than 0.15) BTU in/hr-ft2- degrees F at 40 degrees F and 758 degrees F, respectively. EXAMPLE - Nova 1600(RTM: polystyrene resin) was fed to an extruder. The resin had a recommended melt temperature of 375-525 degrees F. The pressure of the extruder at the die was 1320 psi, and the temperature at the die was 115 degrees C. A blowing agent consisting trans-1,1,1,3-tetrafluoropropene (transHFO-1234ze) was added to the extruder with 0.5 wt.% talc as a nucleating agent. Foam was produced using the blowing agent at concentrations of 10 wt.% , 12 wt.% and 14 wt.%. The density of the foam produced was 0.1-0.07 g/cm3 with a cell size of 49-68 mu m. The foams, of approximately 30 mm diameter, were visually of very good quality, very fine cell size, with no visible or apparent blow holes or voids.