Flame retardant, additive compositions, and flame retardant polyurethanes
申请人:Hussain Saadat
公开号:US20050113495A1
公开(公告)日:2005-05-26
Provided are new flame retardants and liquid flame retardant additive compositions of low viscosity for use in flexible polyurethane foams. The new flame retardants are the reaction product of at least one brominated aromatic diester diol with at least one alcohol-reactive agent. Preferred liquid flame retardant additive compositions are capable of minimizing visible scorching of the foam during its production. Flexible flame retardant polyurethane foams and methods for their production are also provided. The flame retardant additive compositions are formed at least from a) at least one reaction product of a brominated aromatic diester diol and an alcohol-reactive agent; b) at least one hindered amine antioxidant; and c) at least one phenolic antioxidant in which the phenolic ring is substituted by an alkanoic acid alkyl ester group in which alkanoic acid moiety has in the range of 2 to about 4 carbon atoms and the alkyl group has in the range of about 6 to about 16 carbon atoms.
Asymmetric Addition of Diethylzinc to Diphenylphosphinoyl-Imines Catalyzed by Copper(II) Trifluoromethanesulfonate-Chiral (2′-Ethylamino-[1,1′]binaphthalenyl-2-yl)-thiophosphoramidic AcidO,O′-Diaryl Ester Ligands
作者:Min Shi、Zhi-Yu Lei、Qin Xu
DOI:10.1002/adsc.200606128
日期:2006.10
The chiral binaphthylthiophosphoramide L1 prepared from the reaction of O,O-diphenyl chlorothiophosphate with (R)-(+)-N-ethyl-1,1′-binaphthyl-2,2′-diamine was used as a catalytic chiral ligand in the copper(II) trifluoromethanesulfonate-promoted asymmetricaddition of diethylzinc to diphenylphosphinoyl-imines to give the corresponding adducts in 90–98 % ee and good yields under mild conditions.