The application relates to a kind of active cyclic
phosphate flame retardant, its
structural formula is as follows: the application further relates to a kind of persistent
flame-retardant
wool-
polyester blended color fabric and a preparation method thereof.The application has the advantages of simultaneously having
flame-retardant function and helping to improve the performance of
wool-
polyester blended fabric dispersed dye one-bath
dyeing.