| 摘要 |
1,178,718. Hydroxy - (poly) - alkoxyaminomethylphosphinates. STAUFFER CHEMICAL CO. 14 April, 1967 [15 April, 1966], No. 17184/67. Heading C2C. [Also in Division C3] The invention comprises hydroxy-(poly)- alkoxyaminomethylphosphinates of the general formula wherein R is selected from hydrogen, halogen, alkyl and haloalkyl, said alkyl and haloalkyl groups having 1 to 8 carbon atoms and x,y and z are integers from 1 to 10. They may be obtained by reacting a hydroxyalkyl phosphonous acid (H)(OH)P(O)-(CH 2 ) x OH with a 1,2- epoxyalkane or 1,2-epoxyhaloalkane and then reacting the product with the reaction product of formaldehyde and a dialkanolamine as illustrated by the following reaction scheme Specified epoxy compounds are ethylene oxide, 1,2-epoxypropane, 1,2-epoxybutane, 1,2-epoxyoctane, 1,2-epoxydecane and epichlorhydrin, and suitable dialkanolamines are diethanolamine, 2,2<SP>1</SP>-imino-dipropanol and 6,6<SP>1</SP>-imino dihexanol. The products may be used in the preparation of polyurethanes to improve their flame resistance. |
