US 2023/0312457 A1 · LOW-MIGRATION HINDERED PHENOL ANTIOXIDANT COMPOUND, PREPARATION METHOD AND COMPOSITION

Abstract

Disclosed are a low-migration hindered phenol antioxidant compound, a preparation method and a composition. During production, processing or use, polymers experience degradation due to factors such as light, oxygen and heat. The oxidation resistance thereof is often increased by adding one or more common antioxidants, thereby inhibiting and delaying the rate if oxidative degradation thereof. The structures of traditional hindered phenolic antioxidant compounds migrate in polymers. The hindered phenolic antioxidant compound of the present invention has more hindered phenol units, and can achieve the objectives of low extraction and low migration.

Claims12

Dependent claims

A compound of formula (I) or a salt thereof,

wherein, R1, R2 are each independently selected from C1~C10-containing alkyl, phenyl, benzyl, cumyl, C1~C12 sulfane or C1~C2 methylene C1~C12 sulfane;
R3, R4 is independently selected from hydrogen, C1~C6 alkyl, phenyl, benzyl, cumyl, C1~C12 sulfane or C1~C2 methylene C1-C12 sulfane;
R5, R6 are independently selected from hydrogen, hydroxyl, halogen, carbonyl, carboxyl, acyl, ester group, phenyl, C1~C6 alkyl, C1~C6 alkylamino, C1~C6 alkoxy, or R5~R6 are combined into a ketone group;
R7 is a q-valent group;
X is selected from N, NH, NHR8, O, S, CH2, CHR8, R8 is selected from H, OH, C1-C6 alkyl;
m=0~3;
n=0~3;
p=0~18;
q=1~8;
r=0~3;
s=0~2.

8 more elements

Dependencies are inferred from the claim text.

Low-migration hindered phenol antioxidant compound, preparation method and composition

Life of this patent

Low-migration hindered phenol antioxidant compound, preparation method and composition

Life of this patent

Abstract

Claims12