Organophosphorus compound, and preparation process and use thereof

An organophosphorus compound having a structure represented by formula (I):

• in formula (I), groups G are, identical to or different from each other, each independently selected from H, C1-C10 linear or branched alkyl, C1-C10 linear or branched alkoxyl, C6-C10 aryl, C1-C14 alkyl phenyl, a group represented by formula (II), and a group represented by formula (III), wherein at least one of the G groups is a group represented by formula (II);
• in formula (II), groups R1, R2, R3, R4 and R5 are, identical to or different from each other, each independently selected from H, a group represented by formula (II-I), a group represented by formula (II-II), and a group represented by formula (II-III), at least one of R1, R2, R3, R4, and R5 is selected from a group represented by formula (II-I), a group represented by formula (II-II), and a group represented by formula (II-III);
• in formula (II-I), group R1′ is selected from single bond and C1-C20 linear or branched alkylene;
• groups R2′ in the m repeating units are, identical to or different from each other, each independently a single bond or a C1-C4 linear or branched alkylene;
• group R3′ is selected from hydrogen and C1-C20 linear or branched alkyl;
• groups R4′ in the m repeating units are hydrogen;
• groups R5′ in the m repeating units are hydrogen;
• m is 1, 2, or 3;
• and the total carbon number in formula (II-I) is 10-20,
• in formula (II-II), group R1′ is selected from single bond and C1-C20 linear or branched alkylene;
• groups R2′ in the n repeating units are, identical to or different from each other, each independently a single bond, or a C1-C4 linear or branched alkylene;
• groups R3′ in the n repeating units are, identical to or different from each other, each independently a single bond, or a C1-C20 linear or branched alkylene;
• group R4′ is selected from hydrogen and C1-C20 linear or branched alkyl;
• groups R5′ the in n repeating units is hydrogen;
• groups R6′ in n repeating units is hydrogen;
• n is 1, 2, or 3;
• and the total carbon number of the group represented by formula (II-II) is 10-20;
• in formula (II-III), group R1′ is selected from single bond and C1-C20 linear or branched alkylene;
• groups R2′ in the n repeating units are, identical to or different from each other, each independently a 2 valent, 3 valent, or 4 valent C1-C4 linear or branched alkyl;
• groups R3′ in the n repeating units are, identical to or different from each other, each independently a single bond, or a 2 valent or 3 valent C1-C4 linear or branched alkyl;
• R4′ in the n repeating units are, identical to or different from each other, each independently a single bond, or a 2 valent or 3 valent C1-C4 linear or branched alkyl;
• groups R5′ the in n repeating units are, identical to or different from each other, each independently a 2 valent, 3 valent or 4 valent C1-C4 linear or branched alkyl;
• groups R6′ in the n repeating units are, identical to or different from each other, each independently a single bond, or a C1-C4 linear or branched alkylene;
• group R7′ is selected from hydrogen and C1-C20 linear or branched alkyl;
• n is 1, 2, or 3;
• the numbers m in the n repeating units are, identical to or different from each other, each independently 0, 1, 2, 3, 4, or 5;
• the numbers m′ in the n repeating units are, identical to or different from each other, each independently 0, 1, 2, 3, 4, or 5;
• in each repeating unit of formula (II-III), when m is greater than 0, the linking group formed by m sulfur atoms is bonded to groups R2′ and R5′;
• when m′ is greater than 0, the linking group formed by m′ sulfur atoms is bonded to groups R3′ and R4′;
• in each repeating unit of formula (II-III), when group R3′ is a single bond, the end of the linking group formed by m′ sulfur atoms, which is connected to group R3′, is bonded to group R2′, when group R4′ is a single bond, the end of the linking group formed by m′ sulfur atoms, which is connected to group R4′, is bonded to group R5′;
• and the total carbon number of the group represented by formula (II-III) is 10-20;
• in formula (III), groups R0 are each independently selected from phenyl, C1-C14 alkyl phenyl, and C1-C20 linear or branched alkyl;
• groups G′ present in formula (I) are, identical to or different from each other, each independently O or S;
• groups G″ present in formula (I) and formula (II) are O;
• in formula (I), groups R are independently selected from single bond, C1-C10 linear or branched alkylene, and C6-C10 arylene;
• and
• n0 in formula (I) is 0.