Structure of adjustable steric hindrance weak basic light stabilizer and preparation method and application thereof

A structure of a steric hindrance adjustable weak base light stabilizer, wherein structural formulas are as follows:

• structural general formula 1:
• wherein, in the structural general formula 1, X is NH, NR3 or O;
• Y is H, methyl or other alkyl;
• R is 5-22 linear alkyl, branched alkyl, or —(CH2)nSi(OMe)3, or —(CH2)nSi(OEt)3, and n is 2, 3, 4, or 5;
• R1 is C1-C20 linear alkyl, or branched alkyl, or double-bond substituted alkyl, or heteroatom substituted alkyl, or hydroxyl or alkoxy;
• or i-Pr, i-Bu, isoamyl, isooctyl, cyclohexyl, substituted cyclohexyl, cyclopentyl, benzyl, substituted benzyl, allyl, substituted allyl, double-bond contained alkyl, or aryl substituted alkyl, or —(CH2)n-NR4R5;
• R4 and R5 are methyl, ethyl, propyl, isopropyl, butyl, isobutyl, cyclohexyl, or benzyl;
• or
• or —(CH2)n-Si(OEt)3, and n is 2, 3, 4, or 5;
• and
• when R1 is neither —(CH2)n-NR4R5 nor —(CH2)n-Si(OR)3, R and R1 are the same or different;
• or
• structural general formula 2:
• wherein, in the structural formula 2, X is NH, NR3, or O;
• Y is H, methyl, ethyl, or other alkyl side chains;
• R is 5-22 carbon linear or branched alkyl;
• R1 and R2 are linear or branched alkyl, or i-Pr, i-Bu, isoamyl, isooctyl, cyclohexyl, substituted cyclohexyl, cyclopentyl, benzyl, substituted benzyl, allyl, substituted allyl, double-bond contained alkyl, aryl substituented alkyl, or
• or R1 and R2 are both
• R1 and R2 are the same or different;
• and R is the same as or different from R1 and R2;
• when R1 and R2 are different, R1 is Et, i-Pr, n-Pr, Bu, i-Bu, or C5-12 alkyl;
• and
• R2 is
• hydroxyethyl, or hydroxypropyl;
• or
• structural general formula 3:
• wherein, in the structural formula 3, X is NH, NR3, or O;
• Y is H, methyl, ethyl, or other alkyl;
• R is —(CH2)n-, wherein n ranges from 2 to 22, or R is alkyl, or aryl side chain substituted —(CH2)n-, or dibenzylamine;
• R1 and R2 are alkyl, or i-Pr, i-Bu, isoamyl, isooctyl, cyclohexyl, substituted cyclohexyl, cyclopentyl, benzyl, substituted benzyl, allyl, substituted allyl, double-bond contained alkyl, aryl substituented alkyl, or
• R1 and R2 are both
• R1 and R2 are the same or different;
• when R1 and R2 are different, R1 is Et, i-Pr, n-Pr, Bu, i-Bu, or C5-12 alkyl;
• and
• R2 is
• or hydroxyethyl, or hydroxypropyl;
• or
• structural general formula 4:
• wherein, in the structural formula 4, X is NH, NR3, or O;
• Y is H, methyl, ethyl, or other alkyl;
• n is 2-18 linear paraffin —(CH2)n-, or side chain alkyl or aryl substituted alkane;
• R1 is methyl, ethyl, propyl, or butyl;
• or i-Pr, i-Bu, cyclohexyl, substituted cyclohexyl, cyclopentyl, benzyl, substituted benzyl, allyl, substituted allyl, double-bond contained alkyl, or aryl substituented alkyl;
• or R1 is
• R is C5-C20 linear or branched alkyl, or alkyl side chain and aryl substituented alkyl;
• or —CH2CH2CH2-Si(OMe)3, or —CH2CH2CH2-Si(OEt)3;
• or
• structural general formula 5:
• wherein, in the structural formula 5, X is NH, NR3, or O;
• Y is H, methyl, or other alkyl;
• n is 1, 2, 3, 4, or 5;
• and n1 is 1, 2, 3, 4, or 5;
• n is equal to n1, or n is not equal to n1;
• R is C5-C22 linear or branched alkyl, or alkyl side chain and aryl substituented alkyl;
• and
• R is —CH2CH2CH2-Si(OMe)3 or —CH2CH2CH2-Si(OEt)3;
• or
• structural general formula 6:
• wherein, in the structural formula 6, X is NH, NR3, or O;
• Y is H, methyl, ethyl, or other alkyl;
• n is 1, 2, 3, 4, or 5;
• and n1 is 1, 2, 3, 4, or 5;
• n is equal to n1, or n is not equal to n1;
• n2 ranges from 2 to 18;
• and
• n3 ranges from 2 to 35, which is a polymerization degree of an oligomer,
• or
• structural general formula 7:
• wherein, in the structural formula 7, X is NH, NR3, or O;
• Y is H, methyl, ethyl, or other alkyl;
• n1 is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22;
• n ranges from 1 to 15, which is a polymerization degree of an oligomer,
• n is equal to n1, or n is not equal to n1;
• R is C2-C18 linear or branched alkane;
• or isopropyl, isobutyl, isopentyl, isohexyl, isooctyl, or isodecyl;
• and
• R is double-bond contained alkyl;
• or heteroatom contained substituent, or —OH, —OR1, ester group, carboxyl, or nitrile group.