Polymerized high-molecular-weight sterically hindered amine and preparation method thereof

1 . A polymerized high-molecular-weight sterically hindered amine, wherein the polymerized high-molecular-weight sterically hindered amine is selected from the following structures:

m n is an integer between 2-20;

Q 1 , Q 2 and Q 3 are independently selected from —O—, —CO—O—, —CO—NR 22 — or —NR 22 —; R 22 is independently selected from hydrogen and C 1 -C 20 alkyl;

R 1 and R 2 are independently selected from hydrogen, and C 1 -C 40 alkyl, wherein any one or more of the H atoms in the alkyl can be substituted with —R 21 , —OR 21 , —COOR 21 or —COR 21 ; R 3 is selected from C 1 -C 40 alkylene, wherein any one or more of the H atoms in the alkylene can be substituted with —R 21 , —OR 21 , —COOR 21 or —COR 21 ; the total number of carbon atoms in —R 1 , R 2 and R 3 is 40 or less;

R 7 and R 8 are independently selected from hydrogen, unsubstituted C 1 -C 20 alkyl or C 1 -C 20 alkyl substituted with —R 21 ; or, R 7 , R 8 and the N atom between R 7 and R 8 form unsubstituted C 3 -C 12 cycloalkylene or C 2 -C 12 heterocycloalkylene;

R 4 and R 5 are independently selected from hydrogen, and C 1 -C 40 alkyl, wherein any one or more of the H atoms in the alkyl can be substituted with —R 21 , —OR 21 , —COOR 21 or —COR 21 ; R 6 is selected from C 1 -C 40 alkylene, wherein any one or more of the H atoms in the alkylene can be substituted with —R 21 , —OR 21 , —COOR 21 or —COR 21 ; and the total number of carbon atoms in —R 4 , R 5 and R 6 is 40 or less; and

R 12 and R 13 are independently selected from hydrogen, unsubstituted C 4 -C 30 alkyl or C 4 -C 30 alkyl wherein any one or more of the H atoms in the alkyl can be subsiitute with hydroxyl, —NO 2 , halogen, amino, cyano, —R 21 , —OR 21 , —COOOR 21 , —COR 21 or C 1 -C 10 alkyl,

R 21 is selected from C 1 -C 20 alkyl.

2 . The polymerized high-molecular-weight sterically hindered amine according to claim 1 , wherein —R 21 is selected from C 1 -C 12 alkyl;

Q 1 and Q 2 are independently selected from —CO—O—, —CO—NR 22 — or —NR 22 —;

—R 22 is selected from hydrogen, and C 1 -C 12 alkyl;

—R 7 and R 8 are independently selected from unsubstituted C 1 -C 20 alkyl; or, R 7 , R 8 and the N atom between R 7 and R 8 form unsubstituted C 3 -C 10 cycloalkylene or C 2 -C 8 oxo-cycloalkylene; and

Q 3 is selected from —NR 22 —.

3 . The polymerized high-molecular-weight sterically hindered amine according to claim 1 , wherein R 1 and R 2 are independently selected from hydrogen or C 1 -C 40 alkyl; R 3 is selected from C 1 -C 40 alkylene; the total number of carbon atoms in R 1 , R 2 and R 3 is 40 or less;

R 22 is selected from C 1 -C 5 alkyl;

R 7 and R 8 are independently selected from C 1 -C 10 alkylene or R 7 , R 8 and the N atom between R 7 and R 8 form C 3 -C 10 cycloalkylene and C 2 -C 8 oxo-cycloalkylene;

R 4 and R 5 are independently selected from hydrogen or C 1 -C 40 alkyl; R 6 is selected from C 1 -C 40 alkylene; the total number of carbon atoms in R 4 , R 5 and R 6 is 40 or less; and

Q 1 , Q 2 and Q 3 are independently selected from —CO—O—, —CO—NR 22 — or —NR 22 —, and R 22 is selected from C 1 -C 5 alkyl.

4 . A method for preparing the polymerized high-molecular-weight sterically hindered amine of claim 1 , including the steps of dissolving a polymerizable monomer in a solvent or heating a polymerizable monomer to a molten state, adding a catalyst and hydroperoxide in sequence, and carrying out a reaction to generate the polymerized high-molecular-weight sterically hindered amine wherein the polymerizable monomer has a general formula as follows:

wherein

R and R′ can be the same or different, and are selected from C 1 -C 50 alkyl, C 3 -C 12 cycloalkyl, and C 2 -C 12 heterocycloalkyl, wherein the any one or more of the H atoms in the alkyl, cycloalkyl, or heterocycloalkyl can be substituted with hydroxyl, NO 2 , halogen, amino, cyano, —R 21 , —OR 21 , —COOR 21 or —COR 21 , and the hetero atom in the heterocyclic ring is selected from oxygen, nitrogen, sulfur, phosphorus or silicon; and the total number of carbon atoms in R and R′ is 50 or less;

the solvent is dichlorobenzene, chlorobenzene, toluene, halogenated hydrocarbons, methanol, ethanol, ethylene glycol, methyl ether or water;

the catalyst is a metal compound, wherein the metal in the metal compound is selected from IVb, B Vb, VIb, VIIb and VIII metal elements in the periodic table; and

the hydroperoxide is an inorganic hydroperoxide or an organic hydroperoxide, the inorganic or an aryl hydroperoxide is H 2 O 2 ; the organic hydroperoxide is an alkyl hydroperoxide or an aryl hydroperoxide.

5 . A composition, comprising one or two or more organic substances sensitive to light, heat or oxidation and at least one polymerized high-molecular-weight sterically hindered amine according to claim 1 .

6 . A method for preparing the polymerized high-molecular-weight sterically hindered amine according to claim 4 , wherein the catalyst is one or more selected from the group consisting of vanadiumoxy acetylacetonate, vanadium (Ill) acetylacetonate, cobalt carbonyl, chromium (VI) oxide, n-butyl titanate, isopropyl titanate, hexacarbonyl molybdenum, molybdenum trioxide, vanadium pentoxide, chromium trioxide and tungsten trioxide.