JP2001181495A - Polycarbonate resin composition, method for producing the same and method for preventing polycarbonate resin from becoming cloudy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polycarbonate resin composition not only exhibiting resistance to cloudiness but also exhibiting resistance to thermal degradation, and long-term stability. SOLUTION: This polycarbonate resin composition is characterized by phosphorous acid esters represented by the general formula (I) (wherein R1, R2, R4 and R5 are each independently a hydrogen atom, a 1-8C alkyl group, a 5-8C cycloalkyl group, a 6-12C alkylcycloalkyl group, a 7-12C aralkyl group or a phenyl group; R is a hydrogen atom or a 1-8C alkyl group; X is a simple bond, a sulfur atom or CHR6 group (R6 is a hydrogen atom, a 1-8C alkyl group or a 5-8C cycloalkyl group); A is a 2-8C alkylene group or *-COR7 group (R7 is a simple bond or a 1-8C alkylene group; (*) represents the side bonded to the oxygen); either one of Y and Z is a hydroxyl group, a 1-8C alkoxy group or a 7-12C aralkyloxy group, and the other is a hydrogen atom or a 1-8C alkyl group) compounded with a polycarbonate resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polycarbonate resin composition, and more particularly, to a polycarbonate resin composition which is prepared by blending specific phosphites and which prevents cloudiness. .

[0002]

2. Description of the Related Art Polycarbonate resins are used in housing materials for electronic equipment, optical lenses, window glass, and other construction materials, taking advantage of their characteristics such as impact resistance, transparency, and dimensional stability. ing. Since these processes are performed under extremely high temperature conditions of around 300 ° C., there is a problem that the hue and physical properties are reduced. Also, in the polycarbonate polymerization step, the devolatilization step of removing the unreacted monomer and / or the solvent from the reaction product after the polymerization reaction, there is a problem that thermal decomposition is promoted and the hue and physical properties are reduced. In order to suppress such thermal decomposition during processing and polymerization, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite and 2,2′-methylenebis (4,6 -Di-t-butylphenyl) 2-ethylhexyl phosphite, bis (2,4
A method has been proposed in which a phosphorus-based stabilizer such as -di-t-butyl-6-methylphenyl) ethyl phosphite is contained in polycarbonate (Japanese Patent Laid-Open Nos. 1-245049, 5-93370, and 3-265625). JP-A-9-2
78876). However, when these phosphorus-based stabilizers are contained in polycarbonate, there has been a problem that the polycarbonate composition becomes cloudy with time.

In order to solve the above problems, the present invention and the like have made intensive studies on phosphorus-based stabilizers. Not only exhibiting white turbidity resistance, but also exhibiting excellent thermal decomposition resistance and long-term stability,
The present invention has been completed.

[0004]

That is, the present invention relates to a method for preparing a polycarbonate of the general formula (I)

[0005]

(Wherein R ¹ , R ² , R ⁴ and R ⁵ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms,
Represents a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group or a phenyl group having 7 to 12 carbon atoms, and R ³ represents a hydrogen atom or a carbon atom having 1 carbon atom.
To 8 alkyl groups. X is a mere bond, a sulfur atom or a —CHR ⁶ — group (R ⁶ is a hydrogen atom,
Represents an alkyl group or a cycloalkyl group having 5 to 8 carbon atoms). A is an alkylene group having 2 to 8 carbon atoms or *-
Represents a COR ⁷ -group (R ⁷ is a mere bond or an alkylene group having 1 to 8 carbon atoms, and * indicates that it is bonded to the oxygen side). One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. The present invention provides a practically excellent polycarbonate resin composition characterized by comprising a phosphite represented by the formula (1).

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
I do. The phosphite S represented by the formula (I) in the present invention
In the tells, the substituent R¹, R^Two, R^FourAnd R^FiveEach
Independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms,
A cycloalkyl group having a prime number of 5 to 8, an alkyl group having a carbon number of 6 to 12
Rucycloalkyl group, aralkyl group having 7 to 12 carbon atoms or
Represents a phenyl group. R¹, R^Two, R^FourIs one to one carbon atoms
8 alkyl groups, cycloalkyl groups having 5 to 8 carbon atoms, carbon
It is preferably an alkylcycloalkyl group having a prime number of 6 to 12.
Best, R ^FiveIs a hydrogen atom, an alkyl having 1 to 8 carbon atoms.
And a cycloalkyl group having 5 to 8 carbon atoms.
Good. Here, representative of an alkyl group having 1 to 8 carbon atoms
Examples include methyl, ethyl, n-propyl, i-propyl
Ropyl, n-butyl, i-butyl, sec-butyl, t-butyl,
t-pentyl, i-octyl, t-octyl, 2-ethylhexyl
And the like. A cycloalkyl having 5 to 8 carbon atoms
Representative examples of the group include, for example, cyclopentyl,
Xyl, cycloheptyl, cyclooctyl, etc.
Representative examples of 6 to 12 alkylcycloalkyl groups include:
For example, 1-methylcyclopentyl, 1-methylcyclohexyl
And 1-methyl-4-i-propylcyclohexyl and the like.
It is. Representative examples of the aralkyl group having 7 to 12 carbon atoms include:
For example, benzyl, α-methylbenzyl, α, α-dimethyl
Rubenzyl and the like.

Among them, R ¹ and R ⁴ are t-alkyl groups such as t-butyl, t-pentyl and t-octyl, cyclohexyl,
It is preferably a 1-methylcyclohexyl group. R ²
Is preferably an alkyl group having 1 to 5 carbon atoms such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, t-butyl, t-pentyl, and especially Methyl, t-butyl and t-pentyl are preferred. R ⁵ is a hydrogen atom, methyl, ethyl, n-propyl, i
It is preferably an alkyl group having 1 to 5 carbon atoms such as -propyl, n-butyl, i-butyl, sec-butyl, t-butyl and t-pentyl.

The substituent R ³ is a hydrogen atom or a group having 1 carbon atom.
Represents an alkyl group having 1 to 8 carbon atoms, and examples of the alkyl group having 1 to 8 carbon atoms include the same alkyl groups as described above. It is preferably a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, particularly preferably a hydrogen atom or a methyl group.

The substituent X represents a methylene group which may be substituted by a mere bond, a sulfur atom or an alkyl having 1 to 8 carbon atoms or a cycloalkyl having 5 to 8 carbon atoms. Here, the number of carbon atoms substituted with a methylene group is 1 to 1.
Examples of the alkyl having 8 and the cycloalkyl having 5 to 8 carbon atoms include the same alkyl groups and cycloalkyl groups as described above. X is a mere bond, a methylene group or methyl, ethyl, n-propyl, i-propyl, n-butyl, i-
Preferably, butyl, t-butyl or the like is a substituted methylene group. In particular, it is preferable that it is a simple bond.

The substituent A is an alkylene group having 2 to 8 carbon atoms or a * -COR ⁷ -group (R ⁷ is a mere bond or an alkylene group having 1 to 8 carbon atoms, and * is bonded to the oxygen side. It is particularly preferable that the alkylene group is an alkylene group having 2 to 8 carbon atoms. Here, carbon number 2-8
Representative examples of the alkylene group include ethylene, propylene, butylene, pentamethylene, hexamethylene, octamethylene, 2,2-dimethyl-1,3-propylene and the like. Propylene is preferably used. * In the * -COR ⁷ -group indicates that carbonyl is bonded to oxygen of phosphite. In R ⁷ ,
Representative examples of the alkylene group having 1 to 8 carbon atoms include, for example, methylene, ethylene, propylene, butylene, pentamethylene, hexamethylene, octamethylene, 2,2-dimethyl-1,3-propylene and the like. As R ⁷ , a simple bond, ethylene or the like is preferably used.

One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. Represents Here, the alkyl group having 1 to 8 carbon atoms includes, for example, the same alkyl group as described above, and the alkoxy group having 1 to 8 carbon atoms includes, for example, Alkoxy groups that are the same as the above alkyl groups, and those having 7 carbon atoms
Examples of the aralkyloxy group having from 12 to 12 include an aralkyloxy group in which the aralkyl moiety is the same aralkyl as the aralkyl having 7 to 12 carbon atoms.

The phosphites represented by the formula (I) are, for example, represented by the general formula (II)

[0014] (Wherein R ¹ , R ² , R ³ and X have the same meanings as described above), a phosphorus trihalide, and a compound represented by the general formula (III):

[0015] (Wherein, R ⁴ , R ⁵ , A, Y and Z have the same meanings as described above).

The phosphorus trihalide used here includes, for example, phosphorus trichloride, phosphorus tribromide and the like.
In particular, phosphorus trichloride is preferably used.

In the reaction, the reaction is promoted by coexistence of a dehydrohalogenating agent such as amines, pyridines, pyrrolidines and amides, and an alkali metal or alkaline earth metal hydroxide. You can also. Here, the amines include primary amines,
Any of secondary amines and tertiary amines may be used, for example, t-butylamine, t-pentylamine, t-hexylamine, t-octylamine, di-t-butylamine, di-t-pentylamine, di-t-hexylamine , Di-t-octylamine,
Trimethylamine, triethylamine, N, N-dimethylaniline, N, N-diethylaniline and the like can be mentioned, with preference given to triethylamine. As pyridines,
For example, pyridine, picoline and the like can be mentioned, and pyridine is preferable. As pyrrolidines, for example, 1-
Methyl-2-pyrrolidine and the like. Examples of the amide include N, N-dimethylformamide and N, N-dimethylacetamide, and N, N-dimethylformamide is preferably used. Examples of the alkali metal or alkaline earth metal hydroxide include sodium hydroxide, calcium hydroxide and the like, and preferably sodium hydroxide.

The reaction is usually performed in an organic solvent. The organic solvent is not particularly limited as long as it does not inhibit the reaction, and examples thereof include aromatic hydrocarbons, aliphatic hydrocarbons, oxygen-containing hydrocarbons, and halogenated hydrocarbons. As aromatic hydrocarbons, for example, benzene, toluene, xylene, ethylbenzene, etc., as aliphatic hydrocarbons, for example, n-hexane, n-heptane, n-octane, etc., as oxygen-containing hydrocarbons, for example, diethyl Ether, dibutyl ether, tetrahydrofuran, 1,4-
Examples of halogenated hydrocarbons such as dioxane include chloroform, carbon tetrachloride, monochlorobenzene, dichloromethane, 1,2-dichloroethane, dichlorobenzene and the like. Among these, toluene, xylene,
n-Hexane, n-heptane, diethyl ether, tetrahydrofuran, 1,4-dioxane, chloroform, dichloromethane and the like are preferably used.

As a reaction method, usually, a two-stage reaction method is employed in which a bisphenol (II) is reacted with phosphorus trihalide to produce an intermediate, and then a hydroxy compound (III) is reacted. . In this method, phosphorus trihalide is added to bisphenols (II) in an amount of 1%.
It is preferably used in an amount of about 1.1 to 1.1 times, more preferably about 1 to 1.05 times. When a dehydrohalogenating agent is used, it is preferably used in an amount of about 0.05 to 2.4 mol times the phosphorus trihalide, more preferably 2 to 2.1 mol times.
It is about mole times. The reaction between bisphenols (II) and phosphorus trihalides is usually carried out at about 0 to 200 ° C. This reaction is considered to produce an intermediate halogenophosphite, which may be isolated and then used for the next reaction, but is usually subjected to the reaction with the hydroxy compound (III) as a reaction mixture.

Next, when reacting the hydroxy compound (III), the bisphenol (II) is reacted with
Usually, it is used in an amount of about 1 to 1.1 mole times. Also in this reaction, a dehydrohalogenating agent can be used, and in that case, the amount of the dehydrohalogenating agent is the amount of the hydroxy compound (III).
The molar ratio is preferably about 0.05 to 1.2 mole times. When the dehydrohalogenating agent is used in an excessive amount in the first reaction, the amount of the additional dehydrohalogenating agent is usually calculated including the remaining dehydrohalogenating agent. The reaction is usually carried out at a temperature of about 0 to 200 ° C.

After the completion of the reaction, when a dehydrohalogenating agent is used, the hydrohalide salt of the dehydrohalogenating agent formed by the reaction is removed, and the solvent is further removed. By performing an appropriate post-treatment such as column chromatography, the phosphites (I) of the present invention can be obtained.

Here, bisphenols (II) as a raw material of the phosphites (I) can be prepared by known methods, for example, JP-A-52-122350, US Pat. No. 2,538,355, It can also be produced by condensing alkylphenols according to the method described in JP-A-47451. Bisphenols (II)
If it is commercially available, it can be used.

As the bisphenols (II), for example,
2,2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-methylenebis (4-ethyl-6-t-butylphenol), 2,2'-methylenebis (4-n-propyl-6 -t-butylphenol), 2,2'-methylenebis (4-i-propyl
-6-t-butylphenol), 2,2'-methylenebis (4-n-
Butyl-6-t-butylphenol), 2,2'-methylenebis
(4-i-butyl-6-t-butylphenol), 2,2'-methylenebis (4,6-di-t-butylphenol), 2,2'-methylenebis (4-t-pentyl-6-t-butylphenol) ), 2,2 '
-Methylenebis (4-nonyl-6-t-butylphenol),
2,2'-methylenebis (4-t-octyl-6-t-butylphenol), 2,2'-methylenebis (4-methyl-6-t-pentylphenol), 2,2'-methylenebis (4-methyl- 6-cyclohexylphenol), 2,2'-methylenebis [4-methyl-6- (α-methylcyclohexyl) phenol)], 2,2 '
-Methylenebis (4-methyl-6-nonylphenol), 2,
2'-methylenebis (4-methyl-6-t-octylphenol), 2,2'-methylenebis (4,6-di-t-pentylphenol), 2,2'-methylenebis [4-nonyl-6- (α -Methylbenzyl) phenol], 2,2′-methylenebis [4-nonyl-6- (α, α-dimethylbenzyl) phenol],
2'-ethylidenebis (4-methyl-6-butylphenol),

2,2'-ethylidenebis (4-ethyl-6-t-butylphenol), 2,2'-ethylidenebis (4-n-propyl-6-t-butylphenol), 2,2'-ethylidenebis (Four
-i-propyl-6-t-butylphenol), 2,2'-ethylidenebis (4-n-butyl-6-t-butylphenol), 2,2 '
-Ethylidenebis (4-i-butyl-6-t-butylphenol), 2,2'-ethylidenebis (4,6-di-t-butylphenol), 2,2'-ethylidenebis (4-t-pentyl- 6-t-butylphenol), 2,2'-ethylidenebis (4-nonyl-6
-t-butylphenol), 2,2'-ethylidenebis (4-t-
Octyl-6-t-butylphenol), 2,2'-ethylidenebis (4-methyl-6-t-pentylphenol), 2,2'-ethylidenebis (4-methyl-6-cyclohexylphenol), 2,2 '-Ethylidenebis [4-methyl-6- (α-methylcyclohexyl) phenol]], 2,2'-ethylidenebis
(4-methyl-6-nonylphenol), 2,2'-ethylidenebis (4-methyl-6-t-octylphenol), 2,2'-ethylidenebis (4,6-di-t-pentylphenol), 2 , 2 '
-Ethylidenebis [4-nonyl-6- (α-methylbenzyl)
Phenol], 2,2'-ethylidenebis [4-nonyl-6-
(α, α-dimethylbenzyl) phenol], 2,2′-propylidenebis (4-methyl-6-t-butylphenol),
2,2'-propylidenebis (4-ethyl-6-t-butylphenol),

2,2'-propylidenebis (4-n-propyl-6
-t-butylphenol), 2,2'-propylidenebis (4-i
-Propyl-6-t-butylphenol), 2,2'-propylidenebis (4-n-butyl-6-t-butylphenol), 2,2 '
-Propylidenebis (4-i-butyl-6-t-butylphenol), 2,2'-propylidenebis (4,6-di-t-butylphenol), 2,2'-propylidenebis (4-t-pentyl-6-t
-Butylphenol), 2,2'-propylidenebis (4-nonyl-6-t-butylphenol), 2,2'-propylidenebis (4-t-octyl-6-t-butylphenol), 2,2'-propylidenebis (4 -Methyl-6-t-pentylphenol), 2,2'-propylidenebis (4-methyl-6-cyclohexylphenol), 2,2'-propylidenebis [4-methyl-6- (α-methylcyclohexyl) phenol) , 2,2 '
-Propylidenebis (4-methyl-6-nonylphenol), 2,2'-propylidenebis (4-methyl-6-t-octylphenol), 2,2'-propylidenebis (4,6-di-t-
Pentylphenol), 2,2′-propylidenebis [4-nonyl-6- (α-methylbenzyl) phenol], 2,2′-propylidenebis [4-nonyl-6- (α, α-dimethylbenzyl) phenol], 2,2'-butylidenebis (4-methyl-6
-t-butylphenol), 2,2'-butylidenebis (4-ethyl-6-t-butylphenol), 2,2'-butylidenebis
(4,6-di-t-butylphenol), 2,2'-butylidenebis (4-methyl-6-cyclohexylphenol),

2,2'-butylidenebis [4-methyl-6- (α-
Methylcyclohexyl) phenol)], 2,2'-butylidenebis (4,6-di-t-pentylphenol), 2,2'-i-butylidenebis (4-methyl-6-t-butylphenol),
2'-i-butylidenebis (4-ethyl-6-t-butylphenol), 2,2'-i-butylidenebis (4,6-di-t-butylphenol), 2,2'-i-butylidenebis (4-methyl -6-cyclohexylphenol), 2,2'-i-butylidenebis [4-
Methyl-6- (α-methylcyclohexyl) phenol)], 2,2′-i-butylidenebis (4,6-di-t-pentylphenol), 2,2′-pentylidenebis (4-methyl-6- t
-Butylphenol), 2,2'-pentylidenebis (4-ethyl-6-t-butylphenol), 2,2'-pentylidenebis (4,6-di-t-butylphenol), 2,2'-pliers Redidenbis (4-methyl-6-cyclohexylphenol), 2,
2′-pentylidenebis [4-methyl-6- (α-methylcyclohexyl) phenol)], 2,2′-pentylidenebis (4,6
-Di-t-pentylphenol), biphenyl-2,2'-diol, 3,3 ', 5,5'-tetra-t-butylbiphenyl-2,2'-diol, 3,3', 5,5 '-Tetra-t-pentylbiphenyl-2,
2'-diol, 3,3'-di-t-butyl-5,5'-dimethylbiphenyl-2,2'-diol, 1,1'-binaphthyl-2,2'-diol and the like.

The other starting material, a hydroxy compound (I
II), when A is an alkylene having 2 to 8 carbon atoms, can be produced, for example, by reducing the corresponding phenylcarboxylic acid or its ester, benzaldehyde or the like according to a known method. . Here, as the reducing agent, for example, aluminum lithium hydride, aluminum sodium hydride, lithium borohydride, sodium borohydride, calcium borohydride, aluminum sodium triethoxyhydride, sodium triacetoxyborohydride, tributyltin hydride, 9-BBN-pyridine, Examples thereof include sodium / ammonia in the presence of borohydride, sodium and alcohol, lithium / ammonia in the presence of alcohol, and di-iso-butylaluminum hydride.

When A is alkylene having 2 to 8 carbon atoms, typical examples of the hydroxy compound (III) include:
For example, 2- (3-t-butyl-4-hydroxyphenyl) ethanol, 2- (3-t-pentyl-4-hydroxyphenyl) ethanol, 2- (3-t-octyl-ethanol)
4-hydroxyphenyl) ethanol, 2- (3-cyclohexyl-4-hydroxyphenyl) ethanol, 2
-[3- (1-methylcyclohexyl) -4-hydroxyphenyl] ethanol, 2- (3-t-butyl-4-
(Hydroxy-5-methylphenyl) ethanol, 2-
(3-t-pentyl-4-hydroxy-5-methylphenyl) ethanol, 2- (3-t-octyl-4-hydroxy-5-methylphenyl) ethanol, 2- (3-
Cyclohexyl-4-hydroxy-5-methylphenyl) ethanol, 2- [3- (1-methylcyclohexyl) -4-hydroxy-5-methylphenyl] ethanol, 2- (3-t-butyl-4-hydroxy-5) -Ethylphenyl) ethanol, 2- (3-t-pentyl-4)
-Hydroxy-5-ethylphenyl) ethanol, 2-
(3-t-octyl-4-hydroxy-5-ethylphenyl) ethanol, 2- (3-cyclohexyl-4-hydroxy-5-ethylphenyl) ethanol, 2- [3
-(1-methylcyclohexyl) -4-hydroxy-5
-Ethylphenyl] ethanol,

2- (3,5-di-tert-butyl-4-hydroxyphenyl) ethanol, 2- (3-tert-pentyl-4-hydroxy-5-tert-butylphenyl) ethanol, 2- (3- t-octyl-4-hydroxy-5-t
-Butylphenyl) ethanol, 2- (3-cyclohexyl-4-hydroxy-5-t-butylphenyl) ethanol, 2- [3- (1-methylcyclohexyl) -4
-Hydroxy-5-t-butylphenyl] ethanol,
2- (3-t-butyl-4-methoxyphenyl) ethanol, 2- (3-t-pentyl-4-methoxyphenyl) ethanol, 2- (3-t-octyl-4-methoxyphenyl) ethanol, 2- (3-cyclohexyl-
4-methoxyphenyl) ethanol, 2- [3- (1-
Methylcyclohexyl) -4-methoxyphenyl] ethanol, 2- (3-t-butyl-4-methoxy-5-methylphenyl) ethanol, 2- (3-t-pentyl-
4-methoxy-5-methylphenyl) ethanol, 2-
(3-t-octyl-4-methoxy-5-methylphenyl) ethanol, 2- (3-cyclohexyl-4-methoxy-5-methylphenyl) ethanol, 2- [3-
(1-methylcyclohexyl) -4-methoxy-5-methylphenyl] ethanol, 2- (3-t-butyl-4)
-Methoxy-5-ethylphenyl) ethanol, 2-
(3-t-pentyl-4-methoxy-5-ethylphenyl) ethanol, 2- (3-t-octyl-4-methoxy-5-ethylphenyl) ethanol, 2- (3-cyclohexyl-4-methoxy-5) -Ethylphenyl) ethanol,

2- [3- (1-methylcyclohexyl)
-4-methoxy-5-ethylphenyl] ethanol, 2
-(3,5-di-t-butyl-4-methoxyphenyl)
Ethanol, 2- (3-t-pentyl-4-methoxy-
5-t-butylphenyl) ethanol, 2- (3-t-
Octyl-4-methoxy-5-t-butylphenyl) ethanol, 2- (3-cyclohexyl-4-methoxy-5-t-butylphenyl) ethanol, 2- [3-
(1-methylcyclohexyl) -4-methoxy-5-t
-Butylphenyl] ethanol, 3- (3-t-butyl-2-hydroxyphenyl) propanol, 3- (3-
t-butyl-4-hydroxyphenyl) propanol,
3- (5-tert-butyl-2-hydroxyphenyl) propanol, 3- (3-tert-pentyl-4-hydroxyphenyl) propanol, 3- (3-tert-octyl-4-)
(Hydroxyphenyl) propanol, 3- (3-cyclohexyl-4-hydroxyphenyl) propanol, 3
-[3- (1-methylcyclohexyl) -4-hydroxyphenyl] propanol, 3- (3-t-butyl-2)
-Hydroxy-5-methylphenyl) propanol, 3
-(3-t-butyl-4-hydroxy-5-methylphenyl) propanol, 3- (5-t-butyl-2-hydroxy-3-methylphenyl) propanol, 3- (3
-T-pentyl-4-hydroxy-5-methylphenyl) propanol, 3- (3-t-octyl-4-hydroxy-5-methylphenyl) propanol, 3- (3
-Cyclohexyl-4-hydroxy-5-methylphenyl) propanol, 3- [3- (1-methylcyclohexyl) -4-hydroxy-5-methylphenyl] propanol, 3- (3-t-butyl-4-hydroxy- 5
-Ethylphenyl) propanol,

3- (3-t-pentyl-4-hydroxy-5-ethylphenyl) propanol, 3- (3-t-pentyl)
Octyl-4-hydroxy-5-ethylphenyl) propanol, 3- (3-cyclohexyl-4-hydroxy-5-ethylphenyl) propanol, 3- [3- (1
-Methylcyclohexyl) -4-hydroxy-5-ethylphenyl] propanol, 3- (3,5-di-t-butyl-2-hydroxyphenyl) propanol, 3-
(3,5-di-t-butyl-4-hydroxyphenyl)
Propanol, 3- (3-t-pentyl-4-hydroxy-5-t-butylphenyl) propanol, 3- (3
-Tert-octyl-4-hydroxy-5-tert-butylphenyl) propanol, 3- (3-cyclohexyl-4-)
(Hydroxy-5-t-butylphenyl) propanol,
3- [3- (1-methylcyclohexyl) -4-hydroxy-5-t-butylphenyl] propanol, 3-
(3-t-butyl-2-methoxyphenyl) propanol, 3- (3-t-butyl-4-methoxyphenyl) propanol, 3- (3-t-butyl-5-methoxyphenyl) propanol, 3- ( 3-t-pentyl-4-
Methoxyphenyl) propanol, 3- (3-t-octyl-4-methoxyphenyl) propanol, 3- (3
-Cyclohexyl-4-methoxyphenyl) propanol, 3- [3- (1-methylcyclohexyl) -4-methoxyphenyl] propanol,

3- (3-tert-butyl-2-methoxy-5)
-Methylphenyl) propanol, 3- (3-t-butyl-4-methoxy-5-methylphenyl) propanol, 3- (5-t-butyl-2-methoxy-3-methylphenyl) propanol, 3- (3 -T-pentyl-4
-Methoxy-5-methylphenyl) propanol, 3-
(3-t-octyl-4-methoxy-5-methylphenyl) propanol, 3- (3-cyclohexyl-4-methoxy-5-methylphenyl) propanol, 3- [3
-(1-methylcyclohexyl) -4-methoxy-5-
Methylphenyl] propanol, 3- (3-t-butyl-4-methoxy-5-ethylphenyl) propanol,
3- (3-t-pentyl-4-methoxy-5-ethylphenyl) propanol, 3- (3-t-octyl-4-
Methoxy-5-ethylphenyl) propanol, 3-
(3-cyclohexyl-4-methoxy-5-ethylphenyl) propanol, 3- [3- (1-methylcyclohexyl) -4-methoxy-5-ethylphenyl] propanol, 3- (3,5-di-t-) Butyl-2-methoxyphenyl) propanol, 3- (3,5-di-t-butyl-4-methoxyphenyl) propanol, 3- (3-
t-pentyl-4-methoxy-5-t-butylphenyl) propanol, 3- (3-t-octyl-4-methoxy-5-t-butylphenyl) propanol, 3-
(3-cyclohexyl-4-methoxy-5-t-butylphenyl) propanol,

3- [3- (1-methylcyclohexyl)
-4-methoxy-5-tert-butylphenyl] propanol, 3- (3-tert-butyl-2-ethoxyphenyl) propanol, 3- (3-tert-butyl-4-ethoxyphenyl) propanol, 3- (3 -Tert-butyl-4-ethoxy-5-methylphenyl) propanol, 3- (3-
t-butyl-2-ethoxy-5-methylphenyl) propanol, 3- (5-tert-butyl-2-ethoxy-3-)
Methylphenyl) propanol, 3- (3,5-di-t)
-Butyl-4-ethoxyphenyl) propanol, 3-
(3,5-di-tert-butyl-2-ethoxyphenyl) propanol, 4- (3-tert-butyl-2-hydroxyphenyl) butanol, 4- (3-tert-butyl-4-hydroxyphenyl) butanol, 4- (3-t-butyl-
4-hydroxy-5-methylphenyl) butanol,
-(3-t-butyl-2-hydroxy-5-methylphenyl) butanol, 4- (5-t-butyl-2-hydroxy-3-methylphenyl) butanol, 4- (3,5
-Di-tert-butyl-4-hydroxyphenyl) butanol, 4- (3,5-di-tert-butyl-2-hydroxyphenyl) butanol, 4- (3-tert-butyl-2-methoxyphenyl) butanol, 4- (3-t-butyl-4
-Methoxyphenyl) butanol, 4- (3-t-butyl-4-methoxy-5-methylphenyl) butanol,
4- (3-t-butyl-2-methoxy-5-methylphenyl) butanol, 4- (5-t-butyl-2-methoxy-3-methylphenyl) butanol, 4- (3,5-
Di-tert-butyl-4-methoxyphenyl) butanol,
4- (3,5-di-tert-butyl-2-methoxyphenyl) butanol,

5- (3-tert-butyl-2-hydroxyphenyl) pentanol, 5- (3-tert-butyl-4-hydroxyphenyl) pentanol, 5- (3-tert-butyl-4-hydroxy-pentanol) 5- (3-t-butyl-2-hydroxy-5-methylphenyl) pentanol, 5- (5-t-butyl-2)
-Hydroxy-3-methylphenyl) pentanol, 5
-(3,5-di-t-butyl-4-hydroxyphenyl) pentanol, 6- (3,5-di-t-butyl-2)
-Hydroxyphenyl) hexanol, 6- (3-t-
Butyl-2-hydroxyphenyl) hexanol, 6-
(3-t-butyl-4-hydroxyphenyl) hexanol, 6- (3-t-butyl-4-hydroxy-5-methylphenyl) hexanol, 6- (3-t-butyl-
2-hydroxy-5-methylphenyl) hexanol,
6- (5-tert-butyl-2-hydroxy-3-methylphenyl) hexanol, 6- (3,5-di-tert-butyl-4-hydroxyphenyl) hexanol, 6- (3
5-di-t-butyl-2-hydroxyphenyl) hexanol and the like.

In the hydroxy compound (III), A is represented by *
When it is a —COR ⁷ — group, it can be produced, for example, according to the following known method. When R ⁷ is a mere bond, the compound is produced, for example, by subjecting the corresponding hydroxybenzoic acid, alkoxybenzoic acid, aralkyloxybenzoic acid or the like to a Friedel-Crafts reaction using a catalyst such as aluminum chloride or zinc chloride. And when Z is a hydroxy group, an alkoxy group, or an aralkyloxy group, use a corresponding phenol, sodium hydroxide, an alkali metal hydroxide such as potassium hydroxide and carbon dioxide,
It can be produced by a Kolbe-Schmidt reaction according to the methods described in JP-A-62-61949 and JP-A-63-165341. When R ⁷ is an alkylene having 1 to 8 carbon atoms, the corresponding phenol is converted to a phenol such as aluminum chloride or zinc chloride according to the method described in, for example, Rubber Chemistry and Technology 46,96 (1973). After acylation using a Friedel-Crafts catalyst and a carboalkoxyalkanoyl halogenoid, the carbonyl group at the benzyl position is reduced to an alkylene with a hydrogenation catalyst such as palladium charcoal or platinum charcoal, and then the ester is acidified or alkalinized. It can be produced by hydrolysis. A typical example of the hydroxy compound (III) when A is a * -COR ⁷ -group is, for example, 3
-Tert-butyl-2-hydroxybenzoic acid, 3-tert-butyl-4-hydroxybenzoic acid, 5-tert-butyl-2-hydroxybenzoic acid, 3-tert-pentyl-4-hydroxybenzoic acid, 3-t -Octyl-4-hydroxybenzoic acid, 3-cyclohexyl-4-hydroxybenzoic acid, 3
-(1-methylcyclohexyl) -4-hydroxybenzoic acid, 3-t-butyl-2-hydroxy-5-methylbenzoic acid, 3-t-butyl-4-hydroxy-5-methylbenzoic acid, 5-t- Butyl-2-hydroxy-3-methylbenzoic acid, 3-t-pentyl-4-hydroxy-5
Methylbenzoic acid, 3-t-octyl-4-hydroxy-
5-methylbenzoic acid, 3-cyclohexyl-4-hydroxy-5-methylbenzoic acid, 3- (1-methylcyclohexyl) -4-hydroxy-5-methylbenzoic acid, 3-
t-butyl-4-hydroxy-5-ethylbenzoic acid, 3
-T-pentyl-4-hydroxy-5-ethylbenzoic acid, 3-t-octyl-4-hydroxy-5-ethylbenzoic acid, 3-cyclohexyl-4-hydroxy-5-ethylbenzoic acid,

3- (1-methylcyclohexyl) -4-
Hydroxy-5-ethylbenzoic acid, 3,5-di-t-butyl-2-hydroxybenzoic acid, 3,5-di-t-butyl-4-hydroxybenzoic acid, 3-t-pentyl-4-
Hydroxy-5-t-butylbenzoic acid, 3-t-octyl-4-hydroxy-5-t-butylbenzoic acid, 3-
Cyclohexyl-4-hydroxy-5-t-butylbenzoic acid, 3- (1-methylcyclohexyl) -4-hydroxy-5-t-butylbenzoic acid, 3-t-butyl-2-
Methoxybenzoic acid, 3-tert-butyl-4-methoxybenzoic acid, 3-tert-butyl-5-methoxybenzoic acid, 3-
t-pentyl-4-methoxybenzoic acid, 3-t-octyl-4-methoxybenzoic acid, 3-cyclohexyl-4-
Methoxybenzoic acid, 3- (1-methylcyclohexyl)
-4-methoxybenzoic acid, 3-tert-butyl-2-methoxy-5-methylbenzoic acid, 3-tert-butyl-4-methoxy-5-methylbenzoic acid, 5-tert-butyl-2-methoxy-3 -Methylbenzoic acid, 3-t-pentyl-4-methoxy-5-methylbenzoic acid, 3-t-octyl-4-methoxy-5-methylbenzoic acid, 3-cyclohexyl-
4-methoxy-5-methylbenzoic acid, 3- (1-methylcyclohexyl) -4-methoxy-5-methylbenzoic acid, 3-t-butyl-4-methoxy-5-ethylbenzoic acid, 3-t-pentyl -4-methoxy-5-ethylbenzoic acid, 3-t-octyl-4-methoxy-5-ethylbenzoic acid, 3-cyclohexyl-4-methoxy-5-ethylbenzoic acid,

3- (1-methylcyclohexyl) -4-
Methoxy-5-ethylbenzoic acid, 3,5-di-t-butyl-2-methoxybenzoic acid, 3,5-di-t-butyl-
4-methoxybenzoic acid, 3-tert-pentyl-4-methoxy-5-tert-butylbenzoic acid, 3-tert-octyl-4-
Methoxy-5-t-butylbenzoic acid, 3-cyclohexyl-4-methoxy-5-t-butylbenzoic acid, 3-
(3- (1-methylcyclohexyl) -4-methoxy-
5-tert-butylbenzoic acid, 3-tert-butyl-2-ethoxybenzoic acid, 3-tert-butyl-4-ethoxybenzoic acid,
3-tert-butyl-4-ethoxy-5-methylbenzoic acid,
3-tert-butyl-2-ethoxy-5-methylbenzoic acid,
5-tert-butyl-2-ethoxy-3-methylbenzoic acid,
3,5-di-t-butyl-4-ethoxybenzoic acid, 3,
5-di-t-butyl-2-ethoxybenzoic acid, (3-t
-Butyl-2-hydroxyphenyl) acetic acid, (3-t-
(Butyl-4-hydroxyphenyl) acetic acid, (5-t-butyl-2-hydroxyphenyl) acetic acid, (3-t-pentyl-4-hydroxyphenyl) acetic acid, (3-t-octyl-4-hydroxyphenyl) acetic acid , (3-cyclohexyl-4-hydroxyphenyl) acetic acid, [3- (1-
Methylcyclohexyl) -4-hydroxyphenyl] acetic acid, (3-t-butyl-2-hydroxy-5-methylphenyl) acetic acid, (3-t-butyl-4-hydroxy-5)
-Methylphenyl) acetic acid,

(5-t-butyl-2-hydroxy-3-
Methylphenyl) acetic acid, (3-t-pentyl-4-hydroxy-5-methylphenyl) acetic acid, (3-t-octyl-4-hydroxy-5-methylphenyl) acetic acid, (3
-Cyclohexyl-4-hydroxy-5-methylphenyl) acetic acid, [3- (1-methylcyclohexyl) -4-
[Hydroxy-5-methylphenyl] acetic acid, (3-t-butyl-4-hydroxy-5-ethylphenyl) acetic acid,
(3-t-pentyl-4-hydroxy-5-ethylphenyl) acetic acid, (3-t-octyl-4-hydroxy-5)
-Ethylphenyl) acetic acid, (3-cyclohexyl-4-
Hydroxy-5-ethylphenyl) acetic acid, [3- (1-
Methylcyclohexyl) -4-hydroxy-5-ethylphenyl] acetic acid, (3,5-di-t-butyl-2-hydroxyphenyl) acetic acid, (3,5-di-t-butyl-4)
-Hydroxyphenyl) acetic acid, (3-t-pentyl-4)
-Hydroxy-5-t-butylphenyl) acetic acid, (3-
t-octyl-4-hydroxy-5-t-butylphenyl) acetic acid, (3-cyclohexyl-4-hydroxy-5)
-T-butylphenyl) acetic acid,

[3- (1-methylcyclohexyl) -4
-Hydroxy-5-t-butylphenyl] acetic acid, (3-
t-butyl-2-methoxyphenyl) acetic acid, (3-t-
(Butyl-4-methoxyphenyl) acetic acid, (3-t-butyl-5-methoxyphenyl) acetic acid, (3-t-pentyl-4-methoxyphenyl) acetic acid, (3-t-octyl-4-methoxyphenyl) Acetic acid, (3-cyclohexyl-4-methoxyphenyl) acetic acid, [3- (1-methylcyclohexyl) -4-methoxyphenyl] acetic acid, (3-
t-butyl-2-methoxy-5-methylphenyl) acetic acid, (3-t-butyl-4-methoxy-5-methylphenyl) acetic acid, (5-t-butyl-2-methoxy-3-methylphenyl) acetic acid , (3-t-pentyl-4-methoxy-5-methylphenyl) acetic acid, (3-t-octyl-
4-methoxy-5-methylphenyl) acetic acid, (3-cyclohexyl-4-methoxy-5-methylphenyl) acetic acid, [3- (1-methylcyclohexyl) -4-methoxy-5-methylphenyl] acetic acid, (3 -T-butyl-4
-Methoxy-5-ethylphenyl) acetic acid, (3-t-pentyl-4-methoxy-5-ethylphenyl) acetic acid,
(3-t-octyl-4-methoxy-5-ethylphenyl) acetic acid, (3-cyclohexyl-4-methoxy-5-
Ethylphenyl) acetic acid, [3- (1-methylcyclohexyl) -4-methoxy-5-ethylphenyl] acetic acid,
(3,5-di-t-butyl-2-methoxyphenyl) acetic acid,

(3,5-di-tert-butyl-4-methoxyphenyl) acetic acid, (3-tert-pentyl-4-methoxy-)
5-t-butylphenyl) acetic acid, (3-t-octyl-
4-methoxy-5-t-butylphenyl) acetic acid, (3-
Cyclohexyl-4-methoxy-5-t-butylphenyl) acetic acid, [3- (1-methylcyclohexyl) -4-
[Methoxy-5-t-butylphenyl] acetic acid, (3-t-
Butyl-2-ethoxyphenyl) acetic acid, (3-t-butyl-4-ethoxyphenyl) acetic acid, (3-t-butyl-acetic acid)
4-ethoxy-5-methylphenyl) acetic acid, (3-t-
Butyl-2-ethoxy-5-methylphenyl) acetic acid,
(5-tert-butyl-2-ethoxy-3-methylphenyl) acetic acid, (3,5-di-tert-butyl-4-ethoxyphenyl) acetic acid, (3,5-di-tert-butyl-2-ethoxy) Phenyl) acetic acid, 3- (3-t-butyl-2-hydroxyphenyl) propionic acid, 3- (3-t-butyl-
4-hydroxyphenyl) propionic acid, 3- (5-t
-Butyl-2-hydroxyphenyl) propionic acid, 3
-(3-t-pentyl-4-hydroxyphenyl) propionic acid, 3- (3-t-octyl-4-hydroxyphenyl) propionic acid, 3- (3-cyclohexyl-4)
-Hydroxyphenyl) propionic acid, 3- [3- (1
-Methylcyclohexyl) -4-hydroxyphenyl]
Propionic acid, 3- (3-t-butyl-2-hydroxy-5-methylphenyl) propionic acid, 3- (3-t-
Butyl-4-hydroxy-5-methylphenyl) propionic acid, 3- (5-t-butyl-2-hydroxy-3-
Methylphenyl) propionic acid,

3- (3-t-pentyl-4-hydroxy-5-methylphenyl) propionic acid, 3- (3-t-
Octyl-4-hydroxy-5-methylphenyl) propionic acid, 3- (3-cyclohexyl-4-hydroxy-5-methylphenyl) propionic acid, 3- [3- (1
-Methylcyclohexyl) -4-hydroxy-5-methylphenyl] propionic acid, 3- (3-t-butyl-
4-hydroxy-5-ethylphenyl) propionic acid,
3- (3-t-pentyl-4-hydroxy-5-ethylphenyl) propionic acid, 3- (3-t-octyl-4
-Hydroxy-5-ethylphenyl) propionic acid, 3
-(3-cyclohexyl-4-hydroxy-5-ethylphenyl) propionic acid, 3- [3- (1-methylcyclohexyl) -4-hydroxy-5-ethylphenyl]
Propionic acid, 3- (3,5-di-t-butyl-2-hydroxyphenyl) propionic acid, 3- (3,5-di-
t-butyl-4-hydroxyphenyl) propionic acid,
3- (3-t-pentyl-4-hydroxy-5-t-butylphenyl) propionic acid, 3- (3-t-octyl-4-hydroxy-5-t-butylphenyl) propionic acid, 3- (3 -Cyclohexyl-4-hydroxy-5
-T-butylphenyl) propionic acid, 3- [3- (1
-Methylcyclohexyl) -4-hydroxy-5-t-
Butylphenyl] propionic acid, 3- (3-t-butyl-2-methoxyphenyl) propionic acid,

3- (3-tert-butyl-4-methoxyphenyl) propionic acid, 3- (3-tert-butyl-5-methoxyphenyl) propionic acid, 3- (3-tert-pentyl-4-methoxyphenyl) ) Propionic acid, 3- (3-t
-Octyl-4-methoxyphenyl) propionic acid, 3
-(3-cyclohexyl-4-methoxyphenyl) propionic acid, 3- [3- (1-methylcyclohexyl)-
4-methoxyphenyl] propionic acid, 3- (3-t-
Butyl-2-methoxy-5-methylphenyl) propionic acid, 3- (3-t-butyl-4-methoxy-5-methylphenyl) propionic acid, 3- (5-t-butyl-2)
-Methoxy-3-methylphenyl) propionic acid, 3-
(3-t-pentyl-4-methoxy-5-methylphenyl) propionic acid, 3- (3-t-octyl-4-methoxy-5-methylphenyl) propionic acid, 3- (3-
Cyclohexyl-4-methoxy-5-methylphenyl)
Propionic acid, 3- [3- (1-methylcyclohexyl) -4-methoxy-5-methylphenyl] propionic acid, 3- (3-t-butyl-4-methoxy-5-ethylphenyl) propionic acid, 3- (3-t-pentyl-4
-Methoxy-5-ethylphenyl) propionic acid, 3-
(3-t-octyl-4-methoxy-5-ethylphenyl) propionic acid, 3- (3-cyclohexyl-4-methoxy-5-ethylphenyl) propionic acid, 3- [3
-(1-methylcyclohexyl) -4-methoxy-5-
Ethylphenyl] propionic acid,

3- (3,5-di-tert-butyl-2-methoxyphenyl) propionic acid, 3- (3,5-di-tert-propionate)
Butyl-4-methoxyphenyl) propionic acid, 3-
(3-t-pentyl-4-methoxy-5-t-butylphenyl) propionic acid, 3- (3-t-octyl-4-)
Methoxy-5-t-butylphenyl) propionic acid, 3
-(3-cyclohexyl-4-methoxy-5-t-butylphenyl) propionic acid, 3- [3- (1-methylcyclohexyl) -4-methoxy-5-t-butylphenyl] propionic acid, 3- (3 -Tert-butyl-2-ethoxyphenyl) propionic acid, 3- (3-tert-butyl-4)
-Ethoxyphenyl) propionic acid, 3- (3-t-butyl-4-ethoxy-5-methylphenyl) propionic acid, 3- (3-t-butyl-2-ethoxy-5-methylphenyl) propionic acid, -(5-t-butyl-2-
Ethoxy-3-methylphenyl) propionic acid, 3-
(3,5-di-t-butyl-4-ethoxyphenyl) propionic acid, 3- (3,5-di-t-butyl-2-ethoxyphenyl) propionic acid, 3- (3-t-butyl-
2-hydroxyphenyl) butanoic acid, 3-
(3-t-butyl-4-hydroxyphenyl) butanoic acid, 3- (3-t-butyl-4-hydroxy-5-methylphenyl) butanoic acid, 3-
(3-t-butyl-2-hydroxy-5-methylphenyl) butanoic acid,

3- (5-tert-butyl-2-hydroxy-
3-methylphenyl) butanoic acid, 3-
(3,5-di-t-butyl-4-hydroxyphenyl)
Butanoic acid, 3- (3,5-di-t-butyl-2-hydroxyphenyl) butanoic acid, 3
-(3-t-butyl-2-methoxyphenyl) butanoic acid, 3- (3-t-butyl-4-methoxyphenyl) butanoic acid, 3- (3-t-butyl-4-methoxy-) 5- (methylphenyl) butanoic acid, 3- (3-t-butyl-2-methoxy-5-methylphenyl) butanoic acid, 3- (5-t-
Butyl-2-methoxy-3-methylphenyl) butanoic acid, 3- (3,5-di-t-butyl-4-methoxyphenyl) butanoic acid, 3- (3,5
-Di-t-butyl-2-methoxyphenyl) butanoic acid;

Thus, the phosphites (I) of the present invention can be obtained. Thereby, the hydrolysis resistance can be improved. Representative examples of such amines include, for example, triethanolamine, tripropanolamine, and triamine.
trialkanolamines such as -i-propanolamine, diethanolamine, dipropanolamine, di-i
-Dialkanolamines such as propanolamine, tetraethanolethylenediamine, tetra-i-propanolethylenediamine, monoalkanolamines such as dibutylethanolamine and dibutyl-i-propanolamine, 1,3,5-trimethyl-2,4, Aromatic amines such as 6-triazine, alkylamines such as dibutylamine, piperidine, 2,2,6,6-tetramethylpiperidine, 4-hydroxy-2,2,6,6-tetramethylpiperidine, hexamethylene Examples thereof include polyalkylene polyamines such as tetramine, triethylenediamine, triethylenetetramine, and tetraethylenepentamine, and hindered amine light stabilizers described below. Further, long-chain aliphatic amines described in JP-A-61-63686, compounds containing a sterically hindered amine group described in JP-A-6-329830, hindered amines described in JP-A-7-90270 are disclosed. Peridinyl-based light stabilizer, JP-A-7-27
Organic amines described in JP-A-8164 can also be used. The ratio of the amines to the phosphites (I) is usually about 0.01 to 25% by weight.

Representative examples of the acid-bonded metal salt include hydrotalcites. Examples of hydrotalcites include double salt compounds represented by the following formula. M2 + 1-x, M3 + x, (OH-) 2, (An-) x / n, pH2O (where M2 + is Mg, Ca, Sr, Ba, Zn, Pb, Sn and / or
Or Ni, M3 + represents Al, B or Bi, n
Is a numerical value from 1 to 4, x is a numerical value from 0 to 0.5, and p is a numerical value from 0 to
2 represents a numerical value. An- represents an anion having a valence of n. )
Here, specific examples of the anion having a valence of n represented by An- include, for example, OH-, Cl-, Br-, I-, ClO4-, HCO3-
, C6H5COO-, CO32-, SO2-, -OOCCOO-, (CHOHCO
0) 22-, C2H4 (COO) 22-, (CH2COO) 22-, CH3CHOHCOO-, S
iO32-, SiO44-, Fe (CN) 64-, BO3-, PO33-, HPO42- and the like.Of those represented by the above general formula, particularly preferred are, for example, hydrotal represented by the following formula. Sites. Mg1-x Alx (OH) 2 (CO3) x / 2 pH2O (where x and p represent the same meaning as described above) Hydrotalcites are natural products or synthetic products. And it can be used irrespective of its crystal structure, crystal particle diameter and the like. Further, ultrafine zinc oxide described in JP-A-6-329830, inorganic compounds described in JP-A-7-278164, and the like can also be used. The content ratio of the acid-bonded metal salt to the phosphite (I) is usually about 0.01 to 25% by weight.

The phosphites (I) in the present invention
Is usually 0.1 to 100 parts by weight of polycarbonate resin.
Used in an amount of 01 to 5 parts by weight. Preferably, about 0.03 to 3 parts by weight, more preferably about 0.05 to 1 part by weight is blended.
If the amount is less than 0.01 part by weight, the stabilizing effect is not always sufficient, and if it exceeds 5 parts by weight, the effect corresponding to the improvement cannot be obtained, which is economically disadvantageous.

The polycarbonate in the present invention can be produced by reacting a dihydric phenol with a carbonate precursor such as a carbonyl halide, a haloformate or a carbonate ester. Examples of the dihydric phenol include bisphenol A, hydroquinone, methylhydroquinone, resorcinol, 2,2-bis- (4-hydroxyphenyl) pentane, biphenol, bis- (2-hydroxyphenyl) methane, and bis- (4-hydroxy Phenyl) methane, 1,1-bis (4-
(Hydroxyphenyl) ethane, 3,3-bis (4-hydroxyphenyl) pentane, 2,2′-dihydrosibiphenyl, 1,5-dihydroxynaphthalene, 2,6-dihydroxynaphthalene,
Bis- (4-hydroxyphenyl) sulfone, bis- (3,5-dimethyl-4-hydroxyphenyl) sulfone, 2,2-bis- (3,
5-dimethyl-4-hydroxyphenyl) propane, 2,4-dihydroxydiphenylsulfone, bis- (4-hydroxyphenyl) diphenylsulfone, 4,4′-dihydroxydiphenylether, 4,4′-dihydroxy-2,5-dimethyl Phenyl ether, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, 2,2-bis (3-chloro -4-hydroxyphenyl) propane, 2,2-bis (3-bromo-4-hydroxyphenyl) propane, 2,2-bis (3-fluoro-4-hydroxyphenyl) propane, 2,2-bis (4- (Hydroxyphenyl)-
1,1,1,3,3,3-hexafluoropropane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (3,5-dichloro-4-hydroxyphenyl) cyclohexane, 4, 4'-dihydroxybenzophenone, 3,3 ', 5,5'-tetramethyl-
4,4'-dihydroxybenzophenone, bis (4-hydroxyphenyl) sulfide, bis (3-methyl-4-hydroxyphenyl) sulfide, bis (3,5-dimethyl-4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) Phenyl) sulfoxide, 9,9-bis (4-hydroxyphenyl) fluorene and the like. As the carbonyl halide,
For example, phosgene, carbonyl bromide and the like can be mentioned.

Examples of the haloformate include a haloformate of a dihydric phenol such as hydroquinone bischloroformate and a glycol formate such as ethylene glycol haloformate.
Examples of the carbonate ester include diphenyl carbonate, di (chlorophenyl) carbonate, di (tolyl) carbonate, dinaphthyl carbonate, dimethyl carbonate and the like. Phosphite esters
(I) is also useful in branched polycarbonates.
The branched polycarbonate can be prepared by reacting a mixture of a dihydric phenol with a compound having a phenolic hydroxyl group having a valence of 3 or more and a carbonate precursor. Compounds having a trivalent or tetravalent or higher phenolic hydroxyl group include, for example, 1,3,5-trihydroxybenzene, 2,4-bis (4-hydroxyphenylisopropyl)
Phenol, 2,6-bis (2-hydroxy-5-methylbenzyl) -4-methylphenol, 2- (4-hydroxyphenyl) -2
-(2,4-dihydroxyphenyl) propane, 1,4-bis (bis
(4-hydroxyphenyl) methyl) benzene and the like. Such a polycarbonate resin can be produced by a method such as an interfacial polymerization method, a pyridine method, or a transesterification method. The polycarbonate produced by such a production method may be a homopolymer or a copolymer. Further, the polycarbonate may be a polyester carbonate or a polyphosphonate carbonate.

The molecular weight of the polycarbonate resin is usually a viscosity-average molecular weight (converted from a melt viscosity of methylene chloride at 25 ° C.) and is usually 10,000 to 100,000, preferably 15,000 to 500.
00. The polycarbonate resin may be a polymer alloy. Polymer alloy mates include polyolefins (such as polyethylene), methacrylic resin (PMMA), acrylonitrile butadiene styrene
(ABS), saturated polyester (PET, PBT), polyamide, polyphenylene ether (PPE), thermoplastic elastomer (for example, styrene-butadiene-styrene block copolymer (SBS), hydrogenated styrene-butadiene-styrene block copolymer ( SEBS), styrene-isoprene-styrene block copolymer (SIS), hydrogenated styrene-isoprene-styrene block copolymer (SEP)
S), olefin-based, polyester-based, silicone-based,
Acrylate type). Polycarbonate resin is glass fiber, carbon fiber,
It may be filled with a fluorine resin or the like and reinforced.

In blending the phosphites (I) with the polycarbonate resin, other additives such as a phenolic antioxidant, a sulfuric antioxidant, and an ultraviolet absorber may be used, if necessary. Lubricants such as light stabilizers, hydroxylamine, higher aliphatic amides, mineralizers, silicone oils, plasticizers such as epoxidized soybean oil, trimethyl phosphate, triethyl phos-phate, tributyl phosphate, trioctyl phosphate, tributoxyethyl phosphate, Phosphorus flame retardants such as triphenyl phosphate, cresyl diphenyl phosphate, octyl diphenyl phosphate, halogenated phenyl, halogenated diphenyl ether, halogenated aromatic bisimide compound, halogenated aromatic epoxy compound, bisphenol And other low molecular organic halides, halogenated polycarbonates, halogenated benzyl acrylates, halogenated polystyrenes and other halogen-based flame retardants, flame retardant aids such as antimony trioxide, release agents such as higher fatty acids, antistatic agents, pigments , A dye, a filler, a foaming agent, epoxidized soybean oil and the like can also be added. U.S. Pat.Nos. 4,325,853, 4,338,244, 5,175,312, 5,
216,053, 5,252,643, DE-A-4,316,611,
4,316,622, 4,316,876, EP-A-589,839,
Benzofuranones, indolines and the like described in JP-A-591,102 and CA-2,132,132 can also be added. Of course, these additives can be blended simultaneously with the phosphites (I), or can be blended at a different stage from the phosphites (I).

Here, examples of the phenolic antioxidant include the following. (1) Examples of alkylated monophenols 2,6-di-t-butyl-4-methylphenol, 2,4,6-tri-t
-Butylphenol, 2,6-di-t-butylphenol, 2-
t-butyl-4,6-dimethylphenol, 2,6-di-t-butyl
-4-ethylphenol, 2,6-di-t-butyl-4-n-butylphenol, 2,6-di-t-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2 -(
α-methylcyclohexyl) -4,6-dimethylphenol,
2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-t-butyl-4-methoxymethylphenol, 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6- (1'-methylundecyl-1'-yl) phenol, 2,4-dimethyl-6- (1'-methylheptadecyl-1'-yl) phenol, 2,4- Dimethyl-6- (1′-methyltridecyl-1′-yl) phenol and mixtures thereof.

(2) Examples of alkylthiomethylphenol 2,4-dioctylthiomethyl-6-t-butylphenol,
4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-didodecylthiomethyl-4-nonylphenol and mixtures thereof. (3) Examples of hydroquinone and alkylated hydroquinone 2,6-di-t-butyl-4-methoxyphenol, 2,5-di-t-
Butylhydroquinone, 2,5-di-t-amylhydroquinone,
2,6-diphenyl-4-octadecyloxyphenol, 2,
6-di-t-butylhydroquinone, 2,5-di-t-butyl-4-hydroxyanisole, 3,5-di-t-butyl-4-hydroxyphenyl stearate, bis (3,5-di-t -Butyl-4-
Hydroxyphenyl) adipates and mixtures thereof.

(4) Examples of tocopherol α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and mixtures thereof. (5) Examples of hydroxylated thiodiphenyl ethers 2,2'-thiobis (6-t-butylphenol), 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,2'-thiobis (4- Octylphenol), 4,4'-thiobis (3-methyl-6-t-butylphenol), 4,4'-thiobis (2-methyl-6-t-butylphenol), 4,4'-thiobis (3,6-
Di-t-amylphenol), 4,4 '-(2,6-dimethyl-4-hydroxyphenyl) disulfide and the like.

(6) Examples of alkylidene bisphenols and derivatives thereof 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-methylenebis (4-ethyl-6-t-butylphenol), 2 , 2'-methylenebis [4-methyl-6- (α-methylcyclohexyl) phenol)], 2,2'-methylenebis
(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis (4-methyl-6-nonylphenol), 2,2'-
Methylenebis (4,6-di-t-butylphenol), 2,2'-
Ethylidenebis (4,6-di-t-butylphenol), 2,2 '
-Ethylidenebis (4-isobutyl-6-t-butylphenol), 2,2'-methylenebis [6- (α-methylbenzyl) -4-
Nonylphenol], 2,2'-methylenebis [6- (α, α-
Dimethylbenzyl) -4-nonylphenol], 4,4'-methylenebis (6-t-butyl-2-methylphenol), 4,4'-
Methylenebis (2,6-di-t-butylphenol), 4,4'-
Butylidenebis (3-methyl-6-t-butylphenol),
1,1-bis (4-hydroxyphenyl) cyclohexane, 1,
1-bis (5-t-butyl-4-hydroxy-2-methylphenyl) butane, 2,6-bis (3-t-butyl-5-methyl-2-hydroxybenzyl) -4-methylphenol, 1, 1,3-Tris (5
-t-butyl-4-hydroxy-2-methylphenyl) butane, 1,1-bis (5-t-butyl-4-hydroxy-2-methylphenyl) -3-n-dodecylmercaptobutane, ethylene glycol bis [ 3,3-bis-3'-t-butyl-4'-hydroxyphenyl) butyrate], bis (3-t-butyl-4-hydroxy-5-methylphenyl) dicyclopentadiene, bis [2
-(3'-t-butyl-2'-hydroxy-5'-methylbenzyl) -6-
t-butyl-4-methylphenyl] terephthalate, 1,1-bis (3,5-dimethyl-2-hydroxyphenyl) butane, 2,
2-bis (3,5-di-t-butyl-4-hydroxyphenyl) propane, 2,2-bis (5-t-butyl-4-hydroxy-2-methylphenyl) -4-n-dodecylmercaptobutane , 1,1,5,5-
Tetra (5-t-butyl-4-hydroxy-2-methylphenyl) pentane, 2-t-butyl-6- (3'-t-butyl-5'-methyl
-2'-hydroxybenzyl) -4-methylphenyl acrylate, 2,4-di-t-pentyl-6- [1- (2-hydroxy-3,5-
Di-t-pentylphenyl) ethyl] phenyl acrylate and mixtures thereof.

(7) Examples of O-, N- and S-benzyl derivatives 3,5,3 ', 5'-tetra-t-butyl-4,4'-dihydroxydibenzyl ether, octadecyl-4-hydroxy- 3,5-dimethylbenzylmercaptoacetate, tris (3,5-di-t
-Butyl-4-hydroxybenzyl) amine, bis (4-t-
Butyl-3-hydroxy-2,6-dimethylbenzyl) dithioterephthalate, bis (3,5-di-t-butyl-4-hydroxybenzyl) sulfide, isooctyl-3,5-di-t-butyl-4-hydroxy Benzyl mercapto acetate and mixtures thereof. (8) Examples of hydroxybenzylated malonate derivatives dioctadecyl-2,2-bis (3,5-di-t-butyl-2-hydroxybenzyl) malonate, dioctadecyl-2- (3-t-
Butyl-4-hydroxy-5-methylbenzyl) malonate, didodecylmercaptoethyl-2,2-bis (3,5-di-t
-Butyl-4-hydroxybenzyl) malonate, bis [4
-(1,1,3,3-tetramethylbutyl) phenyl] -2,2-bis
(3,5-di-t-butyl-4-hydroxybenzyl) malonate and mixtures thereof. (9) Examples of aromatic hydroxybenzyl derivatives 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4
-Hydroxybenzyl) benzene, 1,4-bis (3,5-di-t
-Butyl-4-hydroxybenzyl) -2,3,5,6-tetramethylbenzene, 2,4,6-tris (3,5-t-butyl-4-hydroxybenzyl) phenol and mixtures thereof.

(10) Examples of triazine derivatives 2,4-bis (n-octylthio) -6- (4-hydroxy-3,5-di
-t-butylanilino) -1,3,5-triazine, 2-n-octylthio-4,6-bis (4-hydroxy-3,5-di-t-butylanilino) -1,3,5-triazine, 2 -n-octylthio-4,6-bis
(4-hydroxy-3,5-di-t-butylphenoxy) -1,3,5-
Triazine, 2,4,6-tris (3,5-di-t-butyl-4-phenoxy) -1,3,5-triazine, tris (4-t-butyl-3-hydroxy-2,6-dimethyl Benzyl) isocyanurate,
Tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate, 2,4,6-tris (3,5-di-t-butyl-4-hydroxy-4-)
(Hydroxyphenylethyl) -1,3,5-triazine, 2,4,6-
Tris (3,5-di-t-butyl-4-hydroxyphenylpropyl) -1,3,5-triazine, tris (3,5-dicyclohexyl-4-hydroxybenzyl) isocyanurate, tris
[2- (3 ', 5'-di-t-butyl-4'-hydroxycinnamoyloxy) ethyl] isocyanurate and mixtures thereof.

(11) Examples of benzylphosphonate derivatives: dimethyl-3,5-di-t-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-t-butyl-4-hydroxybenzylphosphonate, dioctadecyl- 3,5-di-t-
Calcium salts of butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-t-butyl-4-hydroxy-3-methylbenzylphosphonate, 3,5-di-t-butyl-4-hydroxybenzylphosphonic acid monoester and their salts Mixtures and the like. (12) Examples of acylaminophenol derivatives: 4-hydroxylauric anilide, 4-hydroxystearic anilide, octyl-N- (3,5-di-t-butyl-4-hydroxyphenyl) carbanate and mixtures thereof. (13) β- (3,5-di-t-butyl-4-hydroxyphenyl)
Examples of esters of propionic acid with the following monohydric or polyhydric alcohols: methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,3
4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spiro glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N '-Bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1
-Phospha-2,6,7-trioxabicyclo [2,2,2] octane and mixtures thereof.

(14) β- (5-t-butyl-4-hydroxy-3-
Examples of esters of methylphenyl) propionic acid with the following monohydric or polyhydric alcohols: methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol,
4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spiro glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N '-Bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1
-Phospha-2,6,7-trioxabicyclo [2,2,2] octane and mixtures thereof. (15) Examples of esters of β- (3,5-dicyclohexyl-4-hydroxyphenyl) propionic acid with the following monohydric or polyhydric alcohols: methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3- Propanediol, 1,
4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spiro glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N '-Bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1
-Phospha-2,6,7-trioxabicyclo [2,2,2] octane and mixtures thereof.

(16) Examples of esters of 3,5-di-t-butyl-4-hydroxyphenylacetic acid with the following monohydric or polyhydric alcohols: methanol, ethanol, octanol, octadecanol, ethylene glycol, 3-propanediol, 1,
4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, diethylene glycol, thioethylene glycol, spiro glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N '-Bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1
-Phospha-2,6,7-trioxabicyclo [2,2,2] octane and mixtures thereof. (17) β- (3,5-di-t-butyl-4-hydroxyphenyl)
Examples of amides of propionic acid N, N'-bis [3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionyl] hydrazine, N, N'-bis [3- (3' ,
5'-di-t-butyl-4'-hydroxyphenyl) propionyl] hexamethylenediamine, N, N'-bis [3- (3 ', 5'-di
-t-butyl-4'-hydroxyphenyl) propionyl] trimethylenediamine and mixtures thereof.

Examples of the sulfur-based antioxidant include the following. Dilauryl 3,3'-thiodipropionate, tridecyl 3,3'-thiodipropionate, dimyristyl 3,3'-thiodipropionate,
Distearyl 3,3'-thiodipropionate, lauryl stearyl 3,3'-thiodipropionate, neopentanetetrayltetrakis (3-laurylthiopropionate) and the like. Also, as benzofuranones, 5,7-
Di-t-butyl-3- (3,4-dimethylphenyl) -3H-benzofuran-2-one;

Examples of the ultraviolet absorber include the following. (1) Examples of salicylate derivatives Phenyl salicylate, 4-t-butylphenyl salicylate, 2,4-di-t-butylphenyl 3 ′, 5′-di-t-butyl-4′-hydroxybenzoate, 4-t- Octylphenyl salicylate, bis (4-t-butylbenzoyl) resorcinol, benzoylresorcinol, hesisadecyl
3 ', 5'-di-t-butyl-4'-hydroxybenzoate,
Octadecyl 3 ', 5'-di-t-butyl-4'-hydroxybenzoate, 2-methyl-4,6-di-t-butylphenyl 3',
5'-di-t-butyl-4'-hydroxybenzoate and mixtures thereof. (2) Examples of 2-hydroxybenzophenone derivatives 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, bis ( 5-benzoyl-4-hydroxy-2-methoxyphenyl) methane, 2,2 ', 4,4'-tetrahydroxybenzophenone and mixtures thereof.

(3) Examples of 2- (2′-hydroxyphenyl) benzotriazole 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (3 ′, 5′-di-t-butyl-2) '-Hydroxyphenyl) benzotriazole, 2- (5'-t-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-
5'-t-octylphenyl) benzotriazole, 2- (3-t-
Butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole, 2- (3'-s-butyl-2'-hydroxy-
5'-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-4'-octyloxyphenyl) benzotriazole, 2- (3 ', 5'-di-t-amyl-2'-hydroxyphenyl) Benzotriazole, 2- [2'-hydroxy-3 ', 5'-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole, 2-[(3'-t-butyl-2'-hydroxyphenyl ) -5 '-(2-Octyloxycarbonylethyl) phenyl] -5-chlorobenzotriazole, 2- [3'-t-butyl-5'-
[2- (2-ethylhexyloxy) carbonylethyl] -2'-
Hydroxyphenyl] -5-chlorobenzotriazole, 2-
[3'-t-butyl-2'-hydroxy-5 '-(2-methoxycarbonylethyl) phenyl] -5-chlorobenzotriazole, 2-
[3'-t-butyl-2'-hydroxy-5 '-(2-methoxycarbonylethyl) phenyl] benzotriazole, 2- [3'-t-butyl-2'-hydroxy-5- (2-octyloxy Carbonylethyl) phenyl] benzotriazole, 2- [3'-t-butyl
-2'-Hydroxy-5 '-[2- (2-ethylhexyloxy) carbonylethyl] phenyl] benzotriazole, 2- [2-
Hydroxy-3- (3,4,5,6-tetrahydrophthalimidomethyl) -5-methylphenyl] benzotriazole, 2- (3,5-
Di-t-butyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3'-dodecyl-2'-hydroxy-5'-methylphenyl) benzotriazole and 2- [3'-t-butyl
-2'-Hydroxy-5 '-(2-isooctyloxycarbonylethyl) phenyl] benzotriazole mixture, 2,2'
-Methylenebis [6- (2H-benzotriazol-2-yl)-
4- (1,1,3,3-tetramethylbutyl) phenol, 2,2'-
Methylenebis [4-t-butyl-6- (2H-benzotriazole
2-yl) phenol], poly (3-11) (ethylene glycol) with 2- [3'-t-butyl-2'-hydroxy-5 '-(2-methoxycarbonylethyl) phenyl] benzotriazole Condensate, poly (3-11) (ethylene glycol) with methyl 3- [3- (2H-benzotriazol-2-yl) -5-t-butyl-4-hydroxyphenyl] propionate, 2- Ethylhexyl 3- [3-t-butyl-5- (5-chloro-2
H-benzotriazol-2-yl) -4-hydroxyphenyl] propionate, octyl 3- [3-t-butyl-5- (5-
Chloro-2H-benzotriazol-2-yl) -4-hydroxyphenyl] propionate, methyl 3- [3-t-butyl-5
-(5-chloro-2H-benzotriazol-2-yl) -4-hydroxyphenyl] propionate, 3- [3-t-butyl-5- (5-
Chloro-2H-benzotriazol-2-yl) -4-hydroxyphenyl] propionic acid and mixtures thereof.

Examples of the light stabilizer include the following. (1) Examples of hindered amine light stabilizers bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis ((2,2,6,6-tetramethyl-4-piperidyl)
Succinate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis (N-octoxy-2,2,6,6
-Tetramethyl-4-piperidyl) sebacate, bis (N
-Benzyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (N-cyclohexyloxy-2,
2,6,6-tetramethyl-4-piperidyl) sebacate,
Bis (1,2,2,6,6-pentamethyl-4-piperidyl) 2- (3,5
-Di-t-butyl-4-hydroxybenzyl) -2-butylmalonate, bis (1-acryloyl-2,2,6,6-tetramethyl-4
-Piperidyl) 2,2-bis (3,5-di-t-butyl-4-hydroxybenzyl) -2-butylmalonate, bis (1,2,2,6,6
-Pentamethyl-4-piperidyl decandioate,
2,2,6,6-tetramethyl-4-piperidyl methacrylate, 4- [3- (3,5-di-t-butyl-4-hydroxyphenyl)
Propionyloxy] -1- [2- (3- (3,5-di-t-butyl-4-
Hydroxyphenyl) propionyloxy) ethyl] -2,
2,6,6-tetramethylpiperidine, 2-methyl-2- (2,2,6,6-
Tetramethyl-4-piperidyl) amino-N- (2,2,6,6-tetramethyl-4-piperidyl) propionamide, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) 1,2 , 3,4-
Butanetetracarboxylate, tetrakis (1,2,2,6,6
-Pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate, 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 1 -
Mixed esterified product with tridecanol,

Mixed ester of 1,2,3,4-butanetetrabonic acid with 2,2,6,6-tetramethyl-4-piperidinol and 1-tridecanol, 1,2,3,4-butanetetra Carboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and
3, 9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,
Mixed esterified product with 8,10-tetraoxaspiro [5.5] undecane, 1,2,3,4-butanetetracarboxylic acid and 2,2,6,
6-tetramethyl-4-piperidinol and 3,9-bis (2-
Mixed esterified product with hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro [5.5] undecane, dimethyl succinate and 1- (2-hydroxyethyl) -4-hydroxy-2 Polycondensation product with 2,6,6-tetramethylpiperidine, poly [(6-morpholino-1,3,5-triazine-2,4-diyl) ((2,2,6,6-tetramethyl- 4-piperidyl) imino)
Hexamethylene ((2,2,6,6-tetramethyl-4-piperidyl) imino)], poly [(6- (1,1,3,3-tetramethylbutyl) imino-1,3,5-triazine -2,4-diyl ((2,2,6,6-
Tetramethyl-4-piperidyl) imino) hexamethylene
((2,2,6,6-tetramethyl-4-piperidyl) imino)],
N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) polycondensate of hexamethylenediamine and 1,2-dibromoethane, N, N ', 4,7-tetrakis [4 , 6-Bis (N-butyl-N- (2,
2,6,6-tetramethyl-4-piperidyl) amino) -1,3,5-triazin-2-yl] -4,7-diazadecane-1,10 diamine,
N, N ', 4-Tris [4,6-bis (N-butyl-N- (2,2,6,6-tetramethyl-4-piperidyl) amino) -1,3,5-triazine-2
-Yl] -4,7-diazadecane-1,10-diamine, N, N ', 4,7-
Tetrakis [4,6-bis (N-butyl-N- (1,2,2,6,6-pentamethyl-4-piperidyl) amino) -1,3,5-triazine-2-
Yl] -4,7-diazadecane-1,10-diamine, N, N ', 4-tris [4,6-bis (N-butyl-N- (1,2,2,6,6-pentamethyl
-4-piperidyl) amino) -1,3,5-triazin-2-yl]-
4,7-diazadecane-1,10-diamine and mixtures thereof.

(2) Examples of acrylate light stabilizers Ethyl α-cyano-β, β-diphenyl acrylate, isooctyl α-cyano-β, β-diphenyl acrylate, methyl α-carbomethoxycinnamate, methyl α-cyano- β-methyl-p-methoxycinnamate, butyl α-cyano-β-methyl-p-methoxycinnamate, methyl α-carbomethoxy-p-
Methoxycinnamate and N- (β-carbomethoxy-
β-cyanovinyl) -2-methylindoline and mixtures thereof. (3) Examples of nickel-based light stabilizers Nickel complexes of 2,2'-thiobis- [4- (1,1,3,3-tetramethylbutyl) phenol], nickel dibutyldithiocarbamate, nickel salts of monoalkyl esters , Nickel complexes of ketoxime and mixtures thereof.

(4) Examples of oxamide light stabilizers 4,4'-dioctyloxyoxanilide, 2,2'-diethoxyoxanilide, 2,2'-dioctyloxy-5,5'-di- t-
Butylanilide, 2,2'-didodecyloxy-5,5'-di-t-
Butylanilide, 2-ethoxy-2'-ethyloxanilide,
N, N'-bis (3-dimethylaminopropyl) oxamide, 2
-Ethoxy-5-t-butyl-2'-ethoxyanilide, 2-ethoxy-5,4'-di-t-butyl-2'-ethyloxanilide and mixtures thereof. (5) Examples of 2- (2-hydroxyphenyl) -1,3,5-triazine light stabilizers 2,4,6-tris (2-hydroxy-4-octyloxyphenyl) -1,3,5- Triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,
3,5-triazine, 2- [2,4-dihydroxyphenyl-4,6-
Bis (2,4-dimethylphenyl) -1,3,5-triazine, 2,4-
Bis (2-hydroxy-4-propyloxyphenyl) -6-
(2,4-dimethylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis (4-methylphenyl) -1,3,5-triazine , 2- (2-hydroxy-4
-Dodecyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3-butyloxypropoxy) phenyl] -4,6-
Bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2
-Hydroxy-4- (2-hydroxy-3-octyloxypropoxy) phenyl] -4,6-bis (2,4-dimethylphenyl)-
1,3,5-triazine, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol and mixtures thereof.

As the hydroxyamine, for example, N,
N-dibenzylhydroxyamine, N, N-diethylhydroxyamine, N, N-dioctylhydroxyamine, N, N-dilaurylhydroxyamine, N, N-ditetradecylhydroxyamine, N, N-dihexadecylhydroxy Amine, N, N-
Dioctadecylhydroxyamine, N-hexadecyl-N-
Examples include octadecylhydroxyamine, N-heptadecyl-N-octadecylhydroxyamine and mixtures thereof. As the filler, for example, glass fiber,
Carbon fiber, alumina fiber, carbon black, graphite, titanium dioxide, silica, talc, mica, calcium carbonate, calcium sulfate, barium carbonate, oxysulfate, tin oxide, alumina, kaolin, silicon carbide, metal powder, mixtures thereof, etc. Is mentioned.

Particularly preferred phenolic antioxidants include the following compounds, which may be used in combination of two or more. 2,6-di-t-butyl-4-methylphenol, 2,4,6-
Tri-t-butylphenol, 2,4-dioctylthiomethyl
-6-Methylphenol, 2,2'-thiobis (6-t-butylphenol), 4,4'-thiobis (3-methyl-6-t-butylphenol), 2,2'-methylenebis (4-methyl-6 -t-butylphenol), 2,2'-methylenebis (4-ethyl-6-t-
Butylphenol), 2,2'-methylenebis [4-methyl-6
-(α-methylcyclohexyl) phenol)], 2,2'-
Methylenebis (4-methyl-6-cyclohexylphenol), 2,2'-methylenebis (4,6-di-t-butylphenol), 2,2'-ethylidenebis (4,6-di-t-butylphenol), 4 , 4'-methylenebis (6-t-butyl-2-methylphenol), 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-butylidenebis (3-methyl-6-t -Butylphenol), 1,1-bis (4-hydroxyphenyl)
Cyclohexane, 1,1-bis (5-t-butyl-4-hydroxy
-2-methylphenyl) butane, 1,1,3-tris (5-t-butyl-4-hydroxy-2-methylphenyl) butane, ethylene glycol bis [3,3-bis-3'-t-butyl- 4'-hydroxyphenyl) butyrate], 2-t-butyl-6- (3'-t-butyl-5'-methyl-2'-hydroxybenzyl) -4-methylphenyl acrylate, 2,4-di-t -Pentyl-6- [1- (2-hydroxy-3,5-di-t-pentylphenyl) ethyl] phenyl acrylate,

2,4,6-tris (3,5-di-t-butyl-4-phenoxy) -1,3,5-triazine, tris (4-t-butyl-3-hydroxy-2,6- Dimethylbenzyl) isocyanurate,
Bis (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate, tris [2- (3 ′, 5′-di-t-butyl-4′-hydroxycinnamoyloxy) ethyl] isocyanurate, Diethyl-3,5-di-t-butyl-4-hydroxybenzylphosphonate, di-n-octadecyl-3,5-di-t-butyl-4-hydroxybenzylphosphonate, 3,5-di-t-butyl- Calcium salt of 4-hydroxybenzylphosphonic acid monoester, n-octadecyl 3- (3,5-di-t-butyl
-4-hydroxyphenyl) propionate, neopentanetetrayltetrakis (3,5-di-t-butyl-4-hydroxycinnamate), thiodiethylenebis (3,5-di-t-
Butyl-4-hydroxycinnamate), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, 3,6-dioxaoctamethylene Screw
(3,5-di-t-butyl-4-hydroxycinnamate), hexamethylenebis (3,5-di-t-butyl-4-hydroxycinnamate), triethylene glycol bis (5-t-tyl- 4-hydroxy-3-methylcinnamate), 3,9-bis
[2- (3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy) -1,1-dimethylethyl] -2,4,8,
10-tetraoxaspiro [5.5] undecane, N, N'-bis
[3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionyl] hydrazine, N, N'-bis [3- (3', 5'-di-t-butyl-4 ' -Hydroxyphenyl) propionyl] hexamethylenediamine and the like.

Particularly preferred UV absorbers include:
The following are mentioned, and these can be used in combination of two or more.
Phenyl salicylate, 4-t-butylphenyl salicylate, 2,4-di-t-butylphenyl 3 ', 5'-di-t-butyl-4'-hydroxybenzoate, 4-t-octylphenyl salicylate, 2,4 -Dihydroxybenzophenone, 2-
Hydroxy-4-methoxybenzophenone, 2-hydroxy-
4-octoxybenzophenone, 2,2'-dihydroxy-4-
Methoxybenzophenone, bis (5-benzoyl-4-hydroxy-2-methoxyphenyl) methane, 2,2 ', 4,4'-tetrahydroxybenzophenone, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2 -(3 ', 5'- di-t-
Butyl-2'-hydroxyphenyl) benzotriazole,
2- (5'-t-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 2- (3-t-butyl-2-hydroxy -Five-
Methylphenyl) -5-chlorobenzotriazole, 2- (3'-
s-butyl-2'-hydroxy-5'-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-4'-octyloxyphenyl) benzotriazole, 2- (3 ', 5'-di-t -Amyl-2'-hydroxyphenyl) benzotriazole, 2-
[2'-hydroxy-3 ', 5'-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole and the like.

Particularly preferred light stabilizers include the following, and two or more of them can be used. Screw
(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl)
Sebacate, bis (N-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (N-benzyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (N-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6
-Pentamethyl-4-piperidyl) 2- (3,5-di-t-butyl-4-hydroxybenzyl) -2-butylmalonate, bis
(1-Acroyl-2,2,6,6-tetramethyl-4-piperidyl) 2,2-bis (3,5-di-t-butyl-4-hydroxybenzyl) -2-butylmalonate, bis ( 2,2,6,6-tetramethyl-4-piperidyl) succinate, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, 4- [3- (3,5-di-t
-Butyl-4-hydroxyphenyl) propionyloxy] -1- [2- (3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxy) ethyl] -2,2,6,6 -Tetramethylpiperidine, 2-methyl-2- (2,2,6,6-tetramethyl-4
-Piperidyl) amino-N- (2,2,6,6-tetramethyl-4-piperidyl) propionamide, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) 1,2,3,4 -Butanetetracarboxylate,

Tetrakis (1,2,6,6-pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate,
Mixed esterified product of 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 1-tridecanol, 1,2,3,4-butanetetracarboxylic acid And two,
Mixed esterified product of 2,6,6-tetramethyl-4-piperidinol and 1-tridecanol, 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol And a mixed esterified product with 3,9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro [5.5] undecane, 1,2,3,4- Butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 3,9-
Bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-
Mixed esterified product with tetraoxaspiro [5.5] undecane, polycondensate of dimethyl succinate and 1- (2-hydroxyethyl) -4-hydroxy-2,2,6,6-tetramethylpiperidine, poly [ (6-morpholino-1,3,5-triazine-
2,4-diyl) ((2,2,6,6-tetramethyl-4-piperidyl) imino) hexamethylene ((2,2,6,6-tetramethyl-4
-Piperidyl) imino)], poly [(6- (1,1,3,3-tetramethylbutyl) -1,3,5-triazine-2,4-diyl) ((2,2,
6,6-tetramethyl-4-piperidyl) imino) hexamethylene ((2,2,6,6-tetramethyl-4-piperidyl) imino)], 2- (2-hydroxy-4-octyloxyphenyl)- 4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-
[(Hexyl) oxy] -phenol and the like.

In blending the phosphites (I) or other additives used as necessary with the organic material, any known method and apparatus for obtaining a homogeneous mixture may be used. it can. Also, for example, when added to the polymerization step, during the polymerization or
The phosphites (I) or other additives can be added to the polymer solution immediately after polymerization in the form of a solution or dispersant, or can be directly added in a molten state. In the case of blending in the heating step after devolatilization, phosphites (I) or other additives may be directly mixed with the polycarbonate resin by dry blending or using a mixer such as a Henschel mixer. it can. Further, the phosphites (I) or other additives can be mixed with the polycarbonate resin in the form of a master batch.

[0075]

The polycarbonate resin composition of the present invention, which contains phosphites (I), exhibits not only excellent resistance to white turbidity but also excellent thermal decomposition resistance and long-term stability. As shown, it is used for various applications.

[0076]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

Reference Example 1: 2,4,8,10-tetra-t-butyl-6
-[3- (3-Methyl-4-hydroxy-5-t-butylphenyl)
Preparation of propoxy] dibenzo [d, f] [1,3,2] dioxaphosphepin (compound 1) , 5'-Tetra-t-butylbiphenyl-2,
After adding 12 g of 2'-diol and 200 ml of toluene, 4 g of phosphorus trichloride was added with stirring, and then triethylamine was added.
6.5 g was added and the mixture was kept at 80 ° C. for 4 hours. After cooling to room temperature, 50 ml of toluene and 3- (3-t-butyl-4-hydroxy-5
6.5 g of (methylphenyl) propanol was added, followed by 3.3 g of triethylamine, and the mixture was kept at 80 ° C. for 4 hours.
Then, after cooling to room temperature, the generated triethylamine hydrochloride was filtered and washed. After concentrating the filtrate, the residue was purified by silica gel chromatography to obtain white crystals.

Mass spectrometry value (FD-MS): m / z 660 1H-NMR (CDCl3) 1.34 (s, 18H), 1.37 (s, 9H), 1.49 (s, 18H), 1.84 (m, 2H),
2,18 (s, 3H), 2.51 (t, 2H), 3.81 (dt, 2H), 4.59 (s, 1H),
6.76 (s, 1H), 6.89 (S, 1H), 7.16 (d, 2H), 7.42 (d, 2H) 31 P-NMR (CDCl3) 136.4 ppm

Example 1: Stability test [Compound] 100 parts by weight of aromatic polycarbonate resin Test stabilizers: parts by weight described in Table 1 Compound-1: Compound 1 (produced in Reference Example 1) P-1: Tetrakis (2 , 4-di-t-butylphenyl) -4,
4'-diphenylenediphosphonite P-2: bis (2,4-di-t-butylphenyl) pentaerythritol diphosphate P-3: bis (2,6-di-t-butyl-4-methylphenyl)
Pentaerythritol diphosphite P-4: 2,2'-methylenebis (4,6-di-t-butylphenyl) 2-ethylhexyl phosphite P-5: tris (2,4-di-t-butylphenyl) phospho Phyto P-6: tetrakis (2,4-di-t-butyl-5-methylphenyl) -4,4'-diphenylenediphosphonite P-7: bis (2,4-di-t-butyl-6) -Methylphenyl) ethyl phosphite

Using a 40 mmΦ twin screw extruder, the above composition was melt-kneaded at 300 ° C. and pelletized. The pellets were dried with hot air and then melted using a melt indexer.
The working stability was evaluated by measuring the MFR (g / 10min) at 0 ° C., a load of 5 kg and a residence time of 5 minutes. The smaller the value of MFR, the better the processing stability performance. As for long-term stability, hue (YI) after 140 ° C and 200 hours
Was evaluated. The smaller the value of YI, the better the long-term stability. About cloudiness resistance, 125 ℃, 100% Rh, 20
After 1 hour and 40 hours, the presence or absence of white turbidity (visual observation) was evaluated. The results are shown in Table 1.

[0081]

[Table 1] Example Comparative Example 1 1 2 3 4 5 6 7 7-1 -0.05-------- P-1-0.05------P-2--0.05---- -P-3---0.05----P-4----0.05---P-5-----0.05--P-6------0.05-P-7-- − − −--0.05 MFR 7.5 8.3 11.7 10.0 8.8 8.2 8.6 10.5 YI 3.0 8.9 19.7 23.0 8.7 9.3 9.1 9.2 White turbidity (20H) No No Yes Yes Yes No No No Yes White turbidity (40H) No Yes Yes Yes Yes Yes Yes Yes Yes

Claims (7)

[Claims] 1. A compound represented by the general formula (I): (Wherein R ¹ , R ² , R ⁴ and R ⁵ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms,
Represents an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms or a phenyl group, and R ³ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. X is a mere bond, a sulfur atom or -CH
R ^{6 represents a} group (R ⁶ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms or a cycloalkyl group having 5 to 8 carbon atoms).
A represents an alkylene group having 2 to 8 carbon atoms or a * -COR ⁷ -group (R ⁷ represents a mere bond or an alkylene group having 1 to 8 carbon atoms, and * represents an oxygen-bonded group). .
One of Y and Z is a hydroxyl group and has 1 to 1 carbon atoms.
8 represents an alkoxy group or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. A polycarbonate resin composition characterized by comprising a phosphite represented by the formula (1). 2. The resin composition according to claim 1, wherein the amount of the phosphite is 0.01 to 5 parts by weight based on 100 parts by weight of the polycarbonate resin. 3. The phosphites wherein R ¹ and R ⁴ are t-
An alkyl group, cyclohexyl or 1-methylcyclohexyl group, R ² is an alkyl group having 1 to 5 carbon atoms, R ⁵ is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R ³ is a hydrogen atom or 1 to 5 carbon atoms. The resin composition according to any one of claims 1 to 2, wherein X is a mere bond, and A is an alkylene group having 2 to 8 carbon atoms. 4. A method for producing a polycarbonate resin composition, comprising adding a phosphite represented by the above general formula (I) to a polycarbonate resin. 5. A method for preventing opacity of a polycarbonate resin composition, comprising mixing a phosphite represented by the above general formula (I) with a polycarbonate resin. 6. The method according to claim 4, wherein the amount of the phosphite is 0.01 to 5 parts by weight based on 100 parts by weight of the polycarbonate resin. 7. The phosphites wherein R ¹ and R ⁴ are t-
An alkyl group, cyclohexyl or 1-methylcyclohexyl group, R ² is an alkyl group having 1 to 5 carbon atoms, R ⁵ is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R ³ is a hydrogen atom or 1 to 5 carbon atoms. The method according to any one of claims 4 to 6, wherein X is a mere bond, and A is an alkylene group having 2 to 8 carbon atoms.