| abstract |
The present invention provides a polymer precursor comprising a group of the following structural formula (I); (I) Wherein R 2 and R 3 are independently (CR 7 R 8 ) n , CR 9 R 10 , CR 7 R 8 CR 9 R 10 , or CR 9 R 10 CR 7 R 8 , wherein n is 0.1 or 2, R 7 and R 8 are independently hydrogen, halogen or hydrocarbyl), one of R 9 and R 10 is hydrogen and the other is an electron withdrawing group, or R 9 and R 10 are both An electron attractor, R 4 and R 5 are independently CH or CR 11 , wherein R 11 is an electron withdrawing group, Wherein the dotted line represents the presence or absence of a bond, X 1 is CX 2 X 3 when the bond is absent and CX 2 when the bond is present and Y 1 is absent when CY 2 Y 3 and is CY 2 when the said chemical bond is present, X 2, X 3, Y 2 and Y 3 are independently hydrogen, fluorine or other substituents, R 1 is hydrogen, halogen, nitro, or hydrocarbyl And optionally substituted by a functional group or -R 3 -R 5 = Y 1 , R 13 is C (O) or S (O) 2 , Coating the short fibers with the polymer precursor; And Polymerizing the polymer precursor to produce a polymer coating on the staple fiber; Wherein the method comprises the steps of: |