TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polyether polyol comprises a sucrose-based polyether polyol, or amine-initiated polyether. The organic polyisocyanate consist of diisocyanates such as m-phenylene diisocyanate, p-phenylene diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 1,6-hexamethylene diisocyanate, 1,4-hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, hexahydrotoluene diisocyanate or their isomers, 1,5-naphthylene diisocyanate, 1-methylphenyl-2,4-phenyl diisocyanate, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 4,4'-biphenylene diisocyanate, 3,3'-dimethoxy-4,4'-biphenylene diisocyanate and 3,3'-dimethyldiphenylpropane-4,4'-diisocyanate; triisocyanates such as 2,4,6-toluene triisocyanate; or polyisocyanates such as 4,4'-dimethyldiphenylmethane-2,2',5,5'-tetraisocyanate and polymethylene polyphenylpolyisocyanates, their prepolymers, or their modifications. The isocyanate is a polymeric methylene diphenyl diisocyanate or a modified polymeric methylene diphenyl diisocyanate.Preferred Properties: The foam has a k factor at 75 degreesF of 0.120-0.160 BTU-in/hr-ft2-degreesF.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Blowing Agent: The blowing agent is chlorodifluoromethane (HCFC 22), 1-chloro-1,1-difluoroethane (HCFC 142b), 1-chloro-1,2,2,2,-tetrafluoroethane (HCFC 124), butane, isobutane, difluoromethane (HFC 32), 1,1,1,2-tetrafluoro-ethane (HFC134a), 1,1,2,2-tetrafluoroethane (HFC 134), 1,1-difluoroethane (HFC 152a), trifluoromethane (HFC 23), 1,1,1-trifluoroethane (HFC 143a), 1,1,2-trifluoroethane (HFC 143), 1,1,1,2,2-pentafluoropropane (HFC 245cb), 1,1,1,3,3-pentafluoropropane (HFC 245fa), or 1,1,1,2,3,3,3-heptafluoropropane (HFC 227ea). It is preferably HFC 134a.Preferred Alcohol: The alcohol is butyl alcohol (t-butyl, sec-butyl and/or n-butyl alcohol).Preferred Catalyst: The catalyst comprises tertiary amine(s), preferably triethylenediamine, N-methylmorpholine, pentamethyldiethylenetriamine, dimethylcyclohexylamine, tetramethyl ethylenediamine, 1-methyl-4-dimethylaminoethyl-piperazine, 3-methoxy-N-dimethyl-propyl amine, N-ethylmorpholine, diethylethanolamine, N,N-dimethyl-N',N'-dimethyl isopropyl-propylene diamine, N,N-diethyl-3-diethyl aminopropyl amine or dimethyl-benzyl amine.Preferred Compositions: The blowing agent is present at 5-20 wt.%. EXAMPLE - Sucrose-based polyether polyol (40.65), sucrose-amine-based polyether polyol (18.47), amine-based polyether polyol (14.79), polysiloxane-polyether-copolymer (2.32), Polycat-8 (RTM: tert. amine catalyst) (2.49), Desmorapid PV (RTM: tert. amine catalyst) (0.84), tert-butyl alcohol (1.61), water (0.86) and HFC 134a (19.58) were combined and reacted. The resulting polyurethane foam showed a k-factor of 0.126 BTU-in/hr-ft2-degreesF (at 35 degreesF) and 0.143 BTU-in/hr-ft2-degreesF (at 75 degreesF); a % volume change of 0.4% (after 1 day and 1 week at -30 degreesC), and 0.7% (after 1 day at 70 degreesC); a core average of 2.06 lb/ft3; and a % closed cells average of 87.0%.