# US 10,246,563 B2 · Photostabilizer master batch and method for manufacturing same

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- Number: US 10,246,563 B2
- Document ID: US10246563B2
- Status: Granted
- Kind: B2
- Application number: 15/563,265
- Filed: 2016-03-30
- Published: 2018-04-05
- Granted: 2019-04-02
- Earliest claimed: 2015-03-30
- Assignees: Adeka Corporation
- Applicants: Adeka Corporation
- Inventors: Takashi Ayabe; Takashi Usui
- Web page: https://patentgrep.com/patent/US10246563B2

## CPC

- C08J 3/226: {using a polymer as a carrier}
- C08J 3/22: using masterbatch techniques
- C08K 3/36: Silica
- C08K 5/005: {Stabilisers against oxidation, heat, light, ozone}
- C08K 5/17: Amines; Quaternary ammonium compounds
- C08K 5/3435: Piperidines
- C08L 23/00: Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L 101/00: Compositions of unspecified macromolecular compounds
- C08J 2323/12: Polypropene
- C08J 2423/00: Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08K 2201/005: Additives being defined by their particle size in general
- C08L 23/12: Polypropene
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Provided are: a photostabilizer masterbatch in which the problems of the occurrence of blocking over time due to the effect of temperature fluctuations in the environment and the difficulty in handling due to the resulting solidification in aggregates are overcome; and a method of producing the same. The photostabilizer masterbatch is obtained by adding and mixing 80 to 300 parts by mass of (B) a hindered amine compound represented by the following Formula (1) with respect to 100 parts by mass of (A) a silica produced by a wet process and subsequently further adding and mixing 5 to 50 parts by mass of (C) a silica produced by a dry process: (wherein, R1 represents a hydrogen atom, a hydroxy group, an alkyl, hydroxyalkyl, alkoxy or hydroxyalkoxy group having 1 to 30 carbon atoms, or an oxy radical; and R2 represents an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or a group represented by the following Formula (2)) (wherein, R3 represents the same as R1 in the Formula (1)).

## Claims

### Claim 1

A photostabilizer masterbatch obtained by adding and mixing 80 to 300 parts by mass of (B) a hindered amine compound represented by the following Formula (1) with respect to 100 parts by mass of (A) a silica produced by a wet process and subsequently further adding and mixing 5 to 50 parts by mass of (C) a silica produced by a dry process:
(wherein, R1 represents a hydrogen atom, a hydroxy group, an alkyl, hydroxyalkyl, alkoxy or hydroxyalkoxy group having 1 to 30 carbon atoms, or an oxy radical; and R2 represents an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or a group represented by the following Formula (2))
(wherein, R3 represents the same as R1 in said Formula (1)).

### Claim 2 (depends on 1)

The photostabilizer masterbatch according to claim 1, wherein said (A) silica produced by a wet process has a volume-average particle size in a range of 0.1 to 100 μm.

### Claim 3 (depends on 1)

The photostabilizer masterbatch according to claim 1, wherein said (C) silica produced by a dry process has an area-average particle size in a range of 1 to 100 nm.

### Claim 4 (depends on 1)

A synthetic resin composition obtained by incorporating the photostabilizer masterbatch according to claim 1 into a synthetic resin such that the amount of said hindered amine compound of said component (B) is 0.01 to 10 parts by mass with respect to 100 parts by mass of said synthetic resin.

### Claim 5 (depends on 4)

The synthetic resin composition according to claim 4, wherein said synthetic resin is a polyolefin resin.

### Claim 6

A method of producing a photostabilizer masterbatch, said method comprising:
a first mixing step of adding and mixing 80 to 300 parts by mass of (B) a hindered amine compound represented by the following Formula (1) with respect to 100 parts by mass of (A) a silica produced by a wet process; and
a second mixing step of adding and mixing 5 to 50 parts by mass of (C) a silica produced by a dry process with the thus obtained mixture of said (A) silica produced by a wet process and said (B) hindered amine compound:
(wherein, R1 represents a hydrogen atom, a hydroxy group, an alkyl, hydroxyalkyl, alkoxy or hydroxyalkoxy group having 1 to 30 carbon atoms, or an oxy radical; and R2 represents an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or a group represented by the following Formula (2))
(wherein, R3 represents the same as R1 in said Formula (1)).