| abstract |
The invention discloses an active epoxy group-containing dialkyl phosphinate and its preparation and application as a flame retardant and flame retardant material. The structure is shown in any of the following formulas (I) and (II): In formula (I), (II), R 1 , R 2 are independently selected from C 1 -C 24 alkyl, cycloalkyl, aryl or alkenyl, and R 3 is independently selected from C 1 -C 10 Straight-chain or branched-chain alkylene, or C6 - C10 arylene, alkylarylene or arylalkylene, m is an integer of 1-3, and n is an integer of 1-3. Preparation method: It is obtained by reacting dialkyl phosphinic acid metal salt and halogenated epoxy compound as raw materials. The advantages of the invention: it has two structures of dialkylphosphinic acid and epoxy active group at the same time; active epoxy group can prepare alcohol, ester and epoxy resin; it can be used as a flame retardant, used alone or with other The flame retardant is used after mixing. |