# US 10,501,395 B2 · Multifunctional synergistic macromolecular anti-oxidation stabilizer and preparation method and use thereof

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- Number: US 10,501,395 B2
- Document ID: US10501395B2
- Status: Granted
- Kind: B2
- Application number: 15/535,413
- Filed: 2015-12-09
- Published: 2017-11-23
- Granted: 2019-12-10
- Earliest claimed: 2014-12-15
- Applicants: Shaoxing Ruikang Biotechnologes Co., Inc
- Inventors: Lijuan Mao
- Web page: https://patentgrep.com/patent/US10501395B2

## CPC

- C07C 43/1785: {having more than one ether bound}
- C07C 41/16: by reaction of esters of mineral or organic acids with hydroxy or O-metal groups
- C07C 213/02: by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups
- C07C 215/50: with amino groups and the six-membered aromatic ring, or the condensed ring system containing that ring, bound to the same carbon atom of the carbon chain
- C07C 319/12: by reactions not involving the formation of mercapto groups
- C07C 323/41: Y being a hydrogen or an acyclic carbon atom
- C07D 211/58: attached in position 4
- C07D 251/54: Three nitrogen atoms
- C07D 401/14: containing three or more hetero rings
- C08K 5/13: Phenols; Phenolates
- C08K 5/3435: Piperidines
- C08K 5/34922: {Melamine; Derivatives thereof}
- C08K 5/34926: {also containing heterocyclic groups other than triazine groups}
- C08K 5/3725: {containing nitrogen}
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Disclosed is an anti-oxidation stabilizer, which has the following structure (A), wherein RI is a connection chain, and the connection chain is a fatty chain, an aromatic structural chain or a fatty and aromatic structurally combined chain; R2 is (B), and X is O, S, N or NH or —CONR—, Z is O, S, N or NH, and X is different from Z; R is a fatty chain, an aromatic group, a sterically hindered amine or sterically hindered phenol, R3 is a fatty chain, an aromatic group, a sterically hindered amine or sterically hindered phenol, and R is identical to R3, or R is different from R3; n is a positive integer including 1, n1 is a positive integer including 1, and n is identical to n1, or n is different from n1.

## Claims

### Claim 1

A multifunctional synergistic polymer anti-oxidation stabilizer, which is characterized by the following formula:
wherein R1 is a connection chain which is a aliphatic chain, an aromatic structural moiety or a alkyl and aromatic structurally combined chain;
R2 is
X is O, S, NR or NH, or —CONR—, Z is O, S, NR or NH, and X is different from Z;
R is a alkyl chain, an alkenyl chain, an aromatic group, a sterically hindered amine or a sterically hindered phenol, R3 is a alkyl chain, an aromatic group, a sterically hindered amine or a sterically hindered phenol, R is identical to R3, or R is different from R3;
n is a positive integer including 1, n1 is a positive integer including 1, n is identical to n1,
or n is different from n1;
when the stabilizer is of the formula:
R6 and R7 are both bulky groups having at least 8 carbon atoms, and include aliphatic sulfide.

### Claim 2 (depends on 1)

The multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 1, wherein —X—R in the multifunctional synergistic polymer anti-oxidation stabilizer is —(OR3)n, —(SR3)n,
(NHR3)n or —(NR2R3)n, or wherein —X—R is
the formula turned into as the following formula:
the R3 is H, an aliphatic side chain, an aromatic side chain, a mixed aromatic/aliphatic side chain, or a side chain having heteroatoms including S, O, N; n is a positive integer.

### Claim 3 (depends on 2)

The multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 2, wherein example structures of the multifunctional synergistic polymer anti-oxidation stabilizer is;

### Claim 4 (depends on 2)

A method for preparing the multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 2, which is characterized by comprising steps of:
n is an integer which is ≥1,
adding 1 equivalent of alcoholic raw material to a solvent which is anhydrous THF, DMF, acetone, ethyl acetate, toluene, MTBE, DME or acetonitrile that contains 1.5-3 equivalents of NaH or t-BuONa or t-BuOK under nitrogen protection, stirring for 10-30 minutes to 1 hour at room temperature, adding dropwise 1.0 to 2.5 equivalents of iodides, bromides or chlorides with 10% NaI or KI, or activated alcohols, stirring the mixtures at room temperature for 30 minutes to 1 hour, monitoring the reaction by TLC, heating to 40-90° C., until the reaction is complete; quenching saturated NH4Cl aqueous solution, adding ethyl acetate or dichloromethane or petroleum ether or toluene or MTBE or DME and fully mixing, separating organic phases, extracting aqueous phase three times, drying the combined organic phase with Na2OS4, filtering, removing the organic solvent in vacuum; obtaining solid product by recrystallization and oil or liquid product by purification through extraction or silica gel column chromatography;
adding 1 equivalent of alcoholic raw material to a solvent which is TI IF, acetone, ethyl acetate or acetonitrile, dichloromethane, chloroform, toluene, DME, MTBE, chlorobenzene or DMF that contains 1-3 equivalents of NaOH or KOH or Bu4OH and 10-20% tetrabutylammonium bromide under nitrogen protection, stirring for 5-30 minutes at room temperature, adding dropwise 1.0-3.0 equivalents of iodides, bromides or chlorides with 5-30% NaI or KI, or activated alcohols, stirring the mixtures at room temperature for 1-3 hours, heating to 40-100° C. and reacting for 1-25 hours, monitoring the reaction by TLC until the reaction is complete, obtaining solid product by recrystallization, and oil or liquid product by purification through extraction;
or
adding dropwise 1 equivalent of thiol to a solution which is dried THF, to DCM, acetone, THF, DME, acetonitrile or ethyl alcohol, methyl alcohol, chloroform, toluene or DMF that contains 1.0-3.5 equivalents of iodides, bromides or chlorides with 5-30% NaI or KI, or activated alcohols, then adding Na2CO3 or K2CO3, NaOH, KOH, Bu4OH or NEt3 or DMAP or DBU or DIPEA or pyridine, stirring the mixtures at room temperature for 30 minutes, and then heating to 40-90° C. and stirring for 5-12 hours, monitoring the reaction by TLC until the reaction is complete; adding NaCl saturated aqueous solution and an equal amount of ethyl acetate or dichloromethane to the reaction system, fully mixing, separating organic phases, washing aqueous phase three times with the same organic solvent, drying the combined organic phases with Na2OS4, filtering, removing the organic solvent in vacuum; obtaining solid product by recrystallization, and obtaining liquid or oil product by extraction or silica gel column chromatography;
or
dissolving 1 equivalent of amine in a solvent which is dichloromethane, ethyl acetate, acetone, acetonitrile, THF, ethanol, methanol, chloroform, MTBE, DME, toluene or DMF, stirring under nitrogen and adding dropwise 1-3 equivalents of organic iodides, organic bromides or organic chlorides, or activated alcohol compounds to the same organic solvent containing 1-3 equivalents of NaOH or KOH or Bu4OH or K2CO3 or Na2CO3 or DIPEA or NEt3 or pyridine, adding 5-30% butyl tin bromide at the time of the addition of the inorganic base, reacting for 1-3 hours at room temperature, heating to 40 to 90° C. and stirring for additional 1-25 hours; cooling, washing alkaline and water-soluble impurities with the aqueous solution of NH4Cl, obtaining solid product in organic phases by recrystallization, and oil or liquid product by purification through extraction or silica gel column chromatography;
or
dissolving or suspending 1 equivalent of amine and equivalent of base in a solvent which is anhydrous dichloromethane, THF, MTBE, DME, acetone, cyano cyanide, chloroform, toluene or DMF, adding dropwise a solution of 1-2 equivalents of carboxyl chloride in the same dry solvent at 0-10° C. under nitrogen protection, stirring the mixture at 0-10° C. for 30 minutes to 2 hours at room temperature, monitoring the reaction by TLC until the reaction is complete; adding dichloromethane, ethyl acetate, toluene, DME or MTBE and 0.1N iced hydrochloric acid solution, mixing and then isolating organic phases, washing aqueous phase with the same organic solvent twice, drying the combined organic phases with anhydrous Na2SO4, filtering, concentrating; obtaining solid product in organic phase by recrystallization, and obtaining oil or liquid product by silica gel column chromatography or extraction;
or
controlling the average molecular weight of the polymer products ranging from 1000 to 5000 daltons by adjusting the number of n;
dissolving 1 equivalent of diamine, polyamine in dry dichloromethane, ethyl acetate, THF, acetone, acetonitrile, ethanol, methanol, chloroform, toluene or DMF (1:5-15, w/v), and then stirring and adding dropwise polyiodinated, polybrominated or polychlorinated organic raw materials under nitrogen protection, stirring for 30 minutes at room temperature, and then heating to 40-100° C. and reacting for 6-72 hours, controlling the average molecular weight of the polymer product with reaction temperature and time, filtering to produce solid powder product, obtaining solid product by washing 3 times with dichloromethane to, or obtaining oil product sticky oil product by extraction.

### Claim 5 (depends on 4)

The method for preparing multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 4, comprising reaction scheme as following:

### Claim 6 (depends on 1)

An application of the multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 1 as an antioxidant.

### Claim 7 (depends on 6)

The application of the multifunctional synergistic polymer anti-oxidation stabilizers as claimed in claim 6 in plastics, rubbers, petroleum, coatings, fiber products or paintings.

### Claim 8 (depends on 6)

The application of the multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 6, wherein —X—R in the multifunctional synergistic polymer anti-oxidation stabilizer is —(OR3)n, —(SR3)n,
(NHR3)n or —(NR2R3)n, or wherein —X—R is
the formula turned into as the following formula:
the R3 is H, an aliphatic side chain, an aromatic side chain, a mixed aromatic/aliphatic side chain, or a side chain having heteroatoms including S, O, N; n is a positive integer.

### Claim 9 (depends on 6)

The application of the multifunctional synergistic polymer anti-oxidation stabilizer as claimed in claim 6, wherein example structures of the multifunctional synergistic polymer anti-oxidation stabilizer is: