Fiber treatment agent for electron beam fixing

A fiber treatment agent for electron beam fixing comprising

• an acrylic-modified organopolysiloxane (A) having two or more acrylic groups per molecule, as represented by the following general formula (I), and an amino-modified organopolysiloxane (B) having one or more amino groups per molecule, as represented by the following general formula (III):
• MaMAbDcDAdTe (I)
• (in the general formula (I),
• M=R1R2R3SiO1/2,
• MA=R4R5R6SiO1/2,
• D=R7R8SiO2/2,
• DA=R9R10SiO2/2,
• T=R11SiO3/2,
• R1, R2, R3, R5, R6, R7, R8, R10, and R11 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, R4 and R9 each independently represent a monovalent hydrocarbon group represented by the following general formula (II), a, b, c, and d each independently are 0 or a positive integer, e is an integer of 0 to 3, c+d is an integer of 10 to 1000, b+d is an integer of at least 2, and a+b is an integer equal to e+2);
• (in the general formula (II), n is an integer of 1 to 3);
• (in the general formula (III), R12 represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, R13 represents a monovalent group represented by —R14—(NH—R15)h-NH2, X represents a monovalent group represented by R12, R13, or —OR16, R14 represents a divalent hydrocarbon group having 1 to 8 carbon atoms, R15 represents a divalent hydrocarbon group having 1 to 4 carbon atoms, R16 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 8 carbon atoms, f is an integer of 5 to 500, g is an integer of 0 to 100, and h is an integer of 0 to 4, where if g is 0, at least one of two Xs is R13).