JP2002285002A - Flame-retarded thermoplastic resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flame-retarded thermoplastic resin composition reduced in metal corrosion, comprising a flame-retarded thermoplastic resin comprising a thermoplastic resin and a bromine-based flame retardant. SOLUTION: The flame-retarded thermoplastic resin composition extremely reduced in metal corrosion can be obtained by adding a hydrotalcite compound and a specific phenol-type antioxidant at the same time to the flame-retarded thermoplastic resin comprising the thermoplastic resin and the bromine-based flame retardant.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a flame-retardant thermoplastic resin comprising a thermoplastic resin and a bromine-based flame retardant, and a hydrotalcite compound and a specific phenol-based antioxidant added in specific amounts. The present invention relates to a flame-retardant thermoplastic resin composition having less metal corrosion, less metal corrosion,
In addition, it can be widely used in fields requiring flame retardancy.

[0002]

2. Description of the Related Art Generally, halogen-based compounds are used for flame retarding thermoplastic resins such as polyester resins, polyamide resins, polystyrene resins and polyolefin resins.
A method of adding a flame retardant such as a phosphorus compound or a flame retardant auxiliary such as antimony trioxide has been conventionally performed, and among these flame retardants, a halogen compound, particularly a bromine compound is often used.

However, in general, when a flame-retardant thermoplastic resin obtained by adding a brominated flame retardant to a thermoplastic resin is molded and processed, the molding machine and its mold are corroded, and molding obtained by the molding process is performed. When the product is used in contact with a metal, a problem that the metal corrodes often occurs. In order to solve these problems, the following techniques have already been disclosed. (A) A method of adding at least one compound selected from boric acid or boric anhydride, a boric acid ester compound, an organotin maleate compound and an organotin mercaptide compound to a halogen-based flame retardant-containing synthetic resin composition Four
No. 239059), a technique for improving the metal corrosiveness of the halogen-based flame retardant-containing synthetic resin composition. Boric acid or boric anhydride, boric acid ester compound used in the art,
The organotin maleate compound and the organotin mercaptide compound are clearly different from the hydrotalcite compounds and the specific phenolic antioxidant used in the present invention.
Further, there is no description or suggestion in the art of a method of improving the metal corrosiveness by adding the hydrotalcite compound used in the present invention and a specific phenolic antioxidant together. (B) The polyolefin contains a zinc salt of mercaptoimidazole, a di-t-butylphenol antioxidant, and at least one selected from zinc oxide, zinc sulfide, and zinc borate.
A method of adding a certain kind of inorganic zinc compound, a mixture of an organic halogen compound and an antimony oxide, and, if necessary, a small amount of a crosslinking agent and a crosslinking aid (JP-A-57-1451).
No. 36), a technology for improving heat aging resistance and metal corrosion resistance. The di-t-butylphenol-based antioxidant used in the art is the same as the specific phenol-based antioxidant used in the present invention, but in the art, it is selected from zinc oxide, zinc sulfide, and zinc borate. At least one inorganic zinc compound is added as a metal corrosiveness improving agent, and the di-t-butylphenol antioxidant is used for the purpose of improving heat aging characteristics such as tensile residual rate and elongation residual rate. Has been added. Further, there is no description or suggestion in the art that the specific phenolic antioxidant used in the present invention improves the metal corrosiveness, let alone the hydrotalcite compound of the present invention and the specific phenolic antioxidant. There is no description or suggestion that metal corrosion is improved by adding and. (C) A flame-retardant resin composition obtained by adding a halogen-containing organic flame retardant, a hydrotalcite stabilizer and a flame retardant aid to a thermoplastic or thermosetting resin (JP-A-60-1241). Corrosion during molding of products, yellowing of molded products,
Technology that improves heat resistance and weather resistance. The hydrotalcite-based stabilizer used in the art is the same as the hydrotalcite-based compound used in the present invention, but in the technology, the hydrotalcite-based compound is used in combination with a specific phenolic antioxidant. There is no description or suggestion of a method of adding to improve the metal corrosiveness. (D) A method of adding a hydrotalcite-based solid solution to a halogen- and/or acidic-substance-containing synthetic resin (JP-A-61)
No. 174270), a technique for improving the rust resistance or coloring resistance of the resin composition. The hydrotalcite-based solid solution used in the technique is the same as the hydrotalcite-based compound used in the present invention, but in the technique, the hydrotalcite-based compound and a specific phenolic antioxidant are added in combination. There is no description or suggestion of a method for improving the metal corrosiveness.

[0004]

A flame-retardant thermoplastic resin comprising a thermoplastic resin and a brominated flame retardant is disclosed in JP-A-4-
Boric acid or boric anhydride, boric acid ester compounds, organotin maleate compounds as described in 239059,
Addition of an organotin mercaptide compound or JP-A-57-57
No. 145136, a mercaptoimidazole zinc salt, a di-t-butylphenol antioxidant, and at least one inorganic zinc compound selected from zinc oxide, zinc sulfide, and zinc borate are added. Alternatively, a conventional hydrotalcite compound described in JP-A-60-1241 or a zinc-substituted hydrotalcite compound compound described in JP-A-61-174270 may be added alone. None of the technologies can obtain a sufficient metal corrosion prevention effect, and the development of an additive having an excellent metal corrosion prevention effect has been awaited.

[0005]

From such a viewpoint, the inventors of the present invention have earnestly studied an additive having an excellent metal corrosion preventing effect on a flame-retardant thermoplastic resin comprising a thermoplastic resin and a bromine flame retardant. As a result of stacking, a flame-retardant thermoplastic resin composed of 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a brominated flame retardant was added to a component (a) a hydrotalcite compound and a component (b) tetrakis-[methylene- 3-
(3,5-di-t-butyl-4-hydroxyphenyl)
It was found that the flame-retardant thermoplastic resin composition obtained by adding 0.01 to 5.0 parts by weight of propionate]methane in an amount of 90 to 10% by weight to 10 to 90% by weight has extremely little metal corrosion. The present invention has been completed.

Specific examples of the thermoplastic resin used in the present invention include polyester resins, polyamide resins, polystyrene resins, polyolefin resins, polycarbonate resins, polyacetal resins, vinyl acetate resins, polyvinyl alcohol resins. Examples thereof include resins, polyvinyl acetal resins, polyphenylene ether resins, polysulfone resins, polyether sulfone resins, polyphenylene sulfide resins, and blend resins (polymer alloys) of these resins. Among these thermoplastic resins, preferred are polyester-based resins, polyamide-based resins, polystyrene-based resins and polyolefin-based resins, and the most preferred thermoplastic resins are polyester-based resins. ..

A typical example of the polyester resin is polyethylene terephthalate (hereinafter referred to as "PET").
It is called "resin". ), polypropylene terephthalate, polybutylene terephthalate (hereinafter referred to as “PBT resin”), polyhexylene terephthalate, poly(1,4)
-Cyclohexanedimethylene terephthalate), polyethylene naphthalate, polybutylene naphthalate, polyethylene-1,2-bis(phenoxy)ethane-4,
4′-dicarboxylate, a mixture of polyethylene terephthalate and polyethylene isophthalate, a mixture of polybutylene terephthalate and polybutylene isophthalate, a mixture of polybutylene terephthalate and polybutylene decanedicarboxylate, and the like are preferable, and preferred. Examples thereof include PET resin and PBT resin.

Typical examples of the polyamide resin are poly(tetramethylene adipamide) [nylon 4,6], poly(hexamethylene adipamide) [nylon 6,6], poly(hexamethylene se). Bacamide) [nylon 6,10], poly(hexamethylene dodecamide)
[Nylon 6,12], poly(heptamethylene pimelamide) [nylon 7,7], poly(octamethylene suberamide) [nylon 8,8], poly(nonamethylene azeramide) [nylon 9,9], Poly(decamethylene azeramide) [nylon 10,9], poly(decamethylene sebacamide) [nylon 10,10], poly(hexamethylene isophthalamide), poly(hexamethylene terephthalamide), poly(m-xylyl) Renadipamide),
Poly(p-xylylene sebacamide), poly(p-phenylene terephthalamide), poly(m-phenylene isophthalamide), poly[bis(4-aminocyclohexyl)methane-1,10-decanecarboxamide]],
Poly(2,2,2-trimethylhexamethylene terephthalamide), poly(piperazine sebacamide), poly(4
-Aminobutyric acid) [nylon 4], poly(6-aminohexanoic acid) [nylon 6], poly(7-aminoheptanoic acid) [nylon 7], poly(8-aminooctanoic acid)
[Nylon 8], poly(9-aminononanoic acid) [nylon 9], poly(10-aminodecanoic acid) [nylon 1
0], poly(11-aminoundecanoic acid) [nylon 1
1] and poly(12-aminododecanoic acid) [nylon 1
2] etc. can be mentioned. The acid component is terephthalic acid, the amine component is 2,2,4-trimethylhexamethylenediamine and 2,4,4-trimethylhexamethylenediamine, and the acid component is adipic acid and azelaic acid. , A polyamide resin whose amine component is 4,4′-diamino-dicyclohexylene propane, an acid component which is isophthalic acid, and an amine component which is 4,
Polyamide resin which is 4'-diamino-3,3'-dimethyl-dicyclohexylene methane and is copolymerized with ε-caprolactam, acid component is terephthalic acid and isophthalic acid, and amine component is 4,4'- Diamino-dicyclohexylene methane polyamide resin, hexamethylene terephthalamide and hexamethylene isophthalamide copolymer polyamide resin, hexamethylene terephthalamide and hexamethylene adipamide copolymer polyamide resin and hexamethylene terephthalamide and ε A copolyamide resin composed of caprolactam may also be used.

Typical polystyrene resins include polystyrene, acrylonitrile-styrene copolymer (hereinafter referred to as "AS resin"), methyl methacrylate-styrene copolymer, and styrene-α-methylstyrene. Copolymer, styrene-maleic anhydride copolymer, styrene-maleimide copolymer, styrene-N-substituted maleimide copolymer, acrylonitrile-butadiene-styrene copolymer (hereinafter referred to as "ABS resin"), methacryl Acid methyl-butadiene-styrene copolymer (hereinafter,
It is called "MBS resin". ), acrylonitrile-acrylic rubber-styrene copolymer (hereinafter referred to as "AAS resin"), acrylonitrile-styrene-chlorinated polyethylene copolymer (hereinafter referred to as "ACS resin"), methyl methacrylate-acrylonitrile. -Butadiene-styrene copolymer, acrylonitrile-butadiene-styrene-α-methylstyrene copolymer, methyl methacrylate-butadiene-styrene-α-methylstyrene copolymer or a mixture thereof can be mentioned, and preferred ones As, polystyrene, AS resin, ABS resin, MB
S resin, AAS resin, ACS resin, acrylonitrile-
Examples thereof include a butadiene-styrene-α-methylstyrene copolymer or a mixture thereof.

Typical examples of the polyolefin resin include low density polyethylene, medium density polyethylene,
High density polyethylene, polypropylene, polybutene
1, polypentene-1, polyheptene-1, polydecene-1, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene-pentene-1 copolymer, ethylene-heptene-1 copolymer, ethylene- Decene-1
Copolymer, propylene-butene-1 copolymer, propylene-pentene-1 copolymer, propylene-heptene-1
Copolymer, propylene-decene-1 copolymer, ethylene-propylene-butene-1 copolymer, ethylene-vinyl acetate copolymer, propylene-vinyl acetate copolymer, ethylene-propylene-vinyl acetate copolymer, Ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer,
Propylene-acrylic acid copolymer, propylene-methacrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methyl methacrylate copolymer, propylene-methyl acrylate copolymer, propylene-methyl methacrylate copolymer Examples thereof include polymer, ethylene-propylene copolymer rubber and ethylene-propylene-diene copolymer rubber, and preferred examples include low density polyethylene, medium density polyethylene, high density polyethylene and polypropylene.

As the bromine-based flame retardant used in the present invention, any bromine-based flame retardant usually used in this field can be used without limitation. Among these, as the widely used ones, brominated phenyl ethers, Examples thereof include brominated bisphenol A-based carbonate oligomer, brominated bisphenol A-based epoxy resin, brominated styrene-based, brominated phthalimide-based, and brominated benzenes.

Brominated phenyl ethers are compounds in which 1 to 5 bromine atoms are bonded to a phenyl ether group, such as 2,3-dibromopropylpentabromophenyl ether and bis(tribromophenoxy)ethane. , Pentabromophenyl propyl ether, pentabromodiphenyl ether, hexabromodiphenyl ether, octabromodiphenyl ether, decabromodiphenyl ether, polydibromophenylene oxide and the like, and commercially available brominated phenyl ether flame retardants include Bromochem fur. "FR-1205", "FR-120" of East Co., Ltd.
8" and "FR-1210", "Great Lakes FF-68" of Great Lakes Chemical Co., Ltd.
0", "Great Lakes DE-83", "G
"reat Lakes DE-83R" and "Grea
t Lakes DE-79", "Saytex 102E" and "Saytex 11" manufactured by Albemarle Corporation.
1”.

The brominated bisphenol A carbonate oligomer has the following formula

[0014]

[Chemical 1]

An oligomer having a degree of polymerization (n) of 1 to 10 which is a polymer of the group represented by For example, a flame retardant represented by the following formula can be given.

[0016]

[Chemical 2]

Examples of commercially available flame retardants of the above formula include "Fireguard 7000" and "Fireguard 7500" manufactured by Teijin Chemicals Ltd.

[0018]

[Chemical 3]

The commercially available flame retardant of the above formula is "Gre" manufactured by Great Lakes Chemical Co., Ltd.
at Lakes BC-52" and "Great L
akes BC-58" and the like.

The brominated bisphenol A epoxy resin has the following formula

[0021]

[Chemical 4]

A compound having an epoxypropyl group bonded to the terminal of the polymer represented by
The degree of polymerization (n) may be 1 to 100,
For example, a flame retardant represented by the following formula can be given.

[0023]

[Chemical 5]

As the commercially available flame retardant of the above formula, there are various products depending on the degree of polymerization, such as "F-2300" and "F-230" of Bromochem Far East Co., Ltd.
OH", "F-2400" and "F-2400H", "Prasam EP-1" manufactured by Dainippon Ink and Chemicals, Inc.
6", "Prasarm EP-30", "Prasarm EP-"
100" and "Prasam EP-500", "SR-T1000", "SR-T200" of Sakamoto Yakuhin Kogyo Co., Ltd.
0", "SR-T5000" and "SR-T2000"
0” and the like.

Further, as an example of the brominated bisphenol A type epoxy resin, a compound in which the epoxy groups at both ends in the above formula are blocked with a blocking agent and a compound in which one end epoxy group is blocked with a blocking agent are used. Can be mentioned. The blocking agent is not limited as long as it is a compound capable of ring-opening addition of an epoxy group, and examples thereof include those containing a bromine atom in phenols, alcohols, carboxylic acids, amines and isocyanates, Among them, brominated phenols are preferable from the viewpoint of improving the flame retardant effect, and examples thereof include dibromophenol, tribromophenol, pentabromophenol, ethyldibromophenol, propyldibromophenol, butyldibromophenol and dibromocresol. be able to.

Examples of the flame retardant in which epoxy groups at both ends of the polymer are blocked with a blocking agent include the flame retardants represented by the following formula.

[0027]

[Chemical 6]

Commercially available flame retardants of the above formula include "Prasam EC-" from Dainippon Ink and Chemicals, Inc.
14", "Prasam EC-20" and "Prasarm E"
C-30", Tohto Kasei's "TB-60" and "T"
B-62", "SR-T304" of Sakamoto Yakuhin Kogyo Co., Ltd.
0” and “SR-T7040”. Further, examples of the flame retardant in which the terminal epoxy group on one side of the polymer is blocked with a blocking agent include a flame retardant represented by the following formula.

[0029]

[Chemical 7]

Commercially available flame retardants of the above formula include "Prasam EPC" manufactured by Dainippon Ink and Chemicals, Inc.
-15F", "E535 of Yuka Shell Epoxy Co., Ltd."
4” and the like.

The brominated styrene type is represented by the following formula in which 1 to 5 bromine atoms are bonded to the benzene ring of the styrene skeleton.

[0032]

[Chemical 8]

The brominated styrene monomer represented by and the following formula

[0034]

[Chemical 9]

The polymer (polymer) represented by, and preferably a polymer. For example, bromstyrene and brominated polystyrene can be cited. Examples of the commercially available brominated polystyrene flame retardant include “Great Lax Chemical Co., Ltd.'s “Great Lat”.
kes PDBS-10" and "Great Lake"
sPDBS-80" and the like. Further, "Pyrocheck 68PB" manufactured by Ferro Co., Ltd. can be mentioned as an example of the brominated polystyrene flame retardant, though the manufacturing method is different from that of the above flame retardant.

The brominated phthalimide system is a compound in which 1 to 4 bromine atoms are bonded to the benzene ring of the phthalimide group. ), ethylene bis(dibromophthalimide), ethylene bis(tetrabromophthalimide), and the like. Examples of commercially available flame retardants include “Saytex” manufactured by Albemarle Corporation.
"BT-93" and "Saytex BT-93W" can be mentioned.

The brominated benzenes are compounds having 1 to 6 bromine atoms bonded to the benzene ring and compounds having 1 to 5 bromine atoms bonded to the benzene ring. Examples thereof include bromobenzene, pentabromobenzene, hexabromobenzene, bromophenylallyl ether, pentabromotoluene, bis(pentabromophenyl)ethane and poly(pentabromobenzyl acrylate). , "Say" of Albemarle Co., Ltd.
tex 8010".

In the examples, typical brominated flame retardants widely used among these are used, but similar effects can be obtained even if the other brominated flame retardants described above are used. There is expected.

In addition to the general-purpose brominated flame retardants as described above, the brominated flame retardants shown in the literature and catalogs of brom type flame retardant manufacturers can of course be used. It is fully expected that the flame-retardant thermoplastic resin composition containing a flame retardant will achieve the effects of the present invention in a comparable manner. The brominated flame retardants include brominated phenols, brominated phenoxytriazines, brominated cycloalkanes, brominated alkanes, brominated isocyanurates, brominated maleimides, brominated phthalates and brominated bisphenols. A
Examples thereof include brominated bisphenol S and the like.

Brominated phenols are compounds in which 1 to 5 bromine atoms are bonded to a phenol group, and examples thereof include monobromophenol, dibromophenol, tribromophenol, tetrabromophenol and pentabromophenol. Can be mentioned.

The brominated phenoxytriazine system is from 1 to
A compound in which 5 bromine atoms are bonded to a phenoxy group, and 1 to 3 of the brominated phenoxy groups are bonded to a triazine ring, for example, mono(monobromophenoxy)
Triazine, mono(tribromophenoxy)triazine, mono(pentabromophenoxy)triazine, bis(monobromophenoxy)triazine, bis(tribromophenoxy)triazine, bis(pentabromophenoxy)triazine, tris(monobromophenoxy)triazine, Examples thereof include tris(tribromophenoxy)triazine and tris(pentabromophenoxy)triazine.

The brominated cycloalkane system has 6 to 6 carbon atoms.
It is a hydrocarbon in which a bromine atom is bonded to 12 cycloalkanes (cycloaliphatic hydrocarbons). Examples of the cycloalkane include cyclohexane and cyclododecane, and examples of the brominated cycloalkane include:
Examples thereof include monobromocyclohexane, tribromocyclohexane, pentabromocyclohexane, hexabromocyclohexane, monobromocyclododecane, tribromocyclododecane, pentabromocyclododecane and hexabromocyclododecane.

The brominated alkane system is an alkane in which 1 to 8 bromine atoms have 2 to 6 carbon atoms (chain aliphatic hydrocarbon).
Is a compound bound to. Examples of the alkane include ethane, propane, butane, pentane and hexane, and examples of the brominated alkane include monobromethane, dibromethane, tetrabromethane, monobrompropane, tribrompropane and pentabrom. Propane, hexabromopropane, octabromopropane, monobromobutane, dibromobutane, tetrabromobutane, hexabromobutane, octabromobutane, monobromopentane, tribromopentane, pentabromopentane, octabromopentane, monobromohexane, tribromobutane Hexane, tetrabromohexane, pentabromohexane, hexabromohexane, octabromohexane and the like can be mentioned.

The brominated isocyanurates are the compound in which the alkyl residue of the brominated alkane and the isocyanuric acid residue are bonded, and the brominated phenoxy group in which 1 to 5 brom atoms are bonded to the phenoxy group and the isocyanuric acid residue. The compound which the group couple|bonded can be mentioned. Specific examples thereof include tris(monobromethyl)isocyanurate, tris(dibromoethyl)isocyanurate, tris(tetrabromoethyl)isocyanurate, tris(monobromopropyl)isocyanurate, tris(2,3-dibromopropyl). Isocyanurate, tris(tribromopropyl) isocyanurate, tris(tetrabromopropyl) isocyanurate, tris(pentabromopropyl) isocyanurate, tris(heptabromopropyl) isocyanurate, tris(monobromobutyl) isocyanurate, tris( Dibromobutyl) isocyanurate, Tris(pentabromobutyl) isocyanurate, Tris(octabromobutyl) isocyanurate, Tris(monobromopentyl)
Isocyanurate, tris(dibromopentyl) isocyanurate, tris(pentabromopentyl) isocyanurate, tris(octabromopentyl) isocyanurate, tris(monobromohexyl) isocyanurate, tris(dibromohexyl) isocyanurate, tris( Tribromohexyl) isocyanurate, tris(pentabromohexyl) isocyanurate, tris(monobromophenoxy) isocyanurate, tris(dibromophenoxy)isocyanurate, tris(tribromophenoxy)isocyanurate, tris(pentabromophenoxy)isocyanate Nulate, tris(monobromoethylphenoxy) isocyanurate, tris(dibromoethylphenoxy) isocyanurate, tris(tetrabromoethylphenoxy) isocyanurate, tris(monobromopropylphenoxy) isocyanurate, tris(dibromopropylphenoxy) isocyanate Nurate, tris(tetrabromopropylphenoxy) isocyanurate and the like can be mentioned.

The brominated maleimide system is a compound in which 1 to 5 bromine atoms are bonded to a phenylmaleimide group, and examples thereof include monobromophenylmaleimide, dibromophenylmaleimide, tribromophenylmaleimide and pentabromophenylmaleimide. Can be mentioned.

Examples of the brominated phthalic acids include compounds in which 1 to 4 bromine atoms are bonded to phthalic anhydride. Examples thereof include monobromophthalic anhydride, dibromophthalic anhydride, tribromophthalic anhydride and Tetrabrom phthalic anhydride and the like can be mentioned.

Examples of the brominated bisphenol A or brominated bisphenol S may include compounds in which 1 to 8 bromine atoms are bonded to the benzene ring of the bisphenol A residue or the bisphenol S residue. , Monobromobisphenol A, dibromobisphenol A, tribromobisphenol A, tetrabromobisphenol A, pentabromobisphenol A, hexabromobisphenol A, octabromobisphenol A, tetrabromobisphenol A bis(2-hydroxyethyl ether), tetra Brombisphenol A
Bis(2-bromoethyl ether), Tetrabromobisphenol A bis(1,2-dibromoethyl ether), Tetrabromobisphenol A bis(propyl ether), Tetrabromobisphenol A bis(3-bromopropyl ether), Tetrabromo Bisphenol A Bis(2,3-dibromopropyl ether), monobromobisphenol S, dibromobisphenol S, tribromobisphenol S, tetrabromobisphenol S, pentabromobisphenol S, hexabromobisphenol S, octabromobisphenol S, tetra Brombisphenol S bis(2-hydroxyethyl ether), Tetrabromobisphenol S bis(2-
Bromethyl ether), tetrabromobisphenol S bis(1,2-dibromoethyl ether), tetrabromobisphenol S bis(propyl ether), tetrabromobisphenol S bis(3-bromopropyl ether), tetrabromobisphenol S bis( A few
-Dibromopropyl ether) and the like.

The amount of the bromine-based flame retardant used in the present invention varies depending on the degree of flame retardancy required of the thermoplastic resin and the relationship with the physical properties. Usually, the thermoplastic resin 100 is used. 1 to 50 parts by weight is used with respect to parts by weight. If it is less than 1 part by weight, the desired flame retardancy cannot be imparted,
Further, if it exceeds 50 parts by weight, even if the flame retardancy is sufficient,
It is not preferable because the physical properties of the molded product of the resin composition are impaired. From the balance of flame retardancy and physical properties, practically 3 to
Used in the range of 30 parts by weight.

Depending on the purpose, a bromine-based flame retardant may be used.
One or more kinds may be used in combination, but one kind is usually sufficient.

It is often practiced to use a flame retardant aid such as antimony trioxide together for the purpose of further enhancing the flame retardant effect. However, the addition of this flame retardant aid does not contribute to the effect of the present invention. It does not affect. The amount of the flame retardant aid added is usually 100 parts by weight of the thermoplastic resin,
Although it is used in an amount of 1 to 20 parts by weight, the preferred amount used is 2 to 5 parts by weight in view of the physical properties and the like.

The component (a) used in the present invention is hydro.
Talcite compounds are magnesium and aluminum
A compound represented by the following general formula (I): Mg_1-X Al_X (OH)₂ (A^q-)_X/q ・AH₂ O (I) [In the formula (I), q is 1 or 2, and A^q-Is a q-value
Nion, that is (CO₃ ) ^2-Or (ClO_Four )^-And
X and a each represent a real number that satisfies the following conditions.

0<X≦0.5, 0≦a<1] and the following general formula (II), which is a compound in which a part of Mg in the general formula (I) is replaced by Zn. Mg _y1 Zn _y2 Al _x (OH) ₂ (A ^q− ) _x/q ·aH ₂ O (II) [In the formula (II), q is 1 or 2, and A ^q− is a q-valent anion, That is, it is (CO ₃ ) ²⁻ or (ClO ₄ ) ⁻ , and X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≤a<1] can be mentioned. The substitution rate of Zn is 1 mol% to 50 mol%, preferably 15 mol% to 30 mol% with respect to Mg.

Typical examples of the hydrotalcite compound represented by the general formula (I) are as follows. No. 1: Mg _0.750 Al _0.250 (OH) ₂ (CO
₃ ) _0.125・0.5 H ₂ O No. 2: Mg _0.692 Al _0.308 (OH) ₂ (CO
₃ ) _0.154・0.1 H ₂ O No. _{3: Mg 0.683 Al 0.317 (OH} ) 2 (CO
₃ ) _0.159・0.5 H ₂ O No. 4: Mg _0.667 Al _0.333 (OH) ₂ (CO
₃ ) _0.167 /0.1 H ₂ O No. 5: Mg _0.750 Al _0.250 (OH) ₂ (ClO
₄ ) _0.250・0.5 H ₂ O No. 6: Mg _0.692 Al _0.308 (OH) ₂ (ClO
₄ ) _0.308・0.1 H ₂ O No. 7: Mg _0.667 Al _0.333 (OH) ₂ (ClO
₄ ) _0.333 ·0.1 H ₂ O The following are typical examples of the hydrotalcite compound represented by the general formula (II). No. 8: Mg _0.625 Zn _0.125 Al _0.250 (OH)
₂ (CO ₃ ) _0.125・0.45H ₂ O No. 9: Mg _0.538 Zn _0.154 Al _0.308 (OH)
₂ (CO ₃ ) _0.154 No. 10: Mg _0.500 Zn _0.167 Al _0.333 (OH)
₂ (CO ₃ ) _0.167・0.54H ₂ O No. 11: Mg _0.625 Zn _0.125 Al _0.250 (OH)
₂ (ClO ₄ ) _0.250・0.3 H ₂ O No. 12: Mg _0.538 Zn _0.154 Al _0.308 (OH)
₂ (ClO ₄ ) _0.308・0.5 H ₂ O No. 13: Mg _0.500 Zn _0.167 Al _0.333 (OH)
₂ (ClO ₄ ) _0.333 ·0.1 H ₂ O In the present invention, in order to improve the compatibility, dispersibility and the like of the hydrotalcite compound with the flame-retardant thermoplastic resin, the hydrotalcite compound is surface-treated. Treatment agents, for example, those surface-treated with higher fatty acids are also widely used. Specific products of the hydrotalcite compounds are Alkamizer 2, Alkamizer 3 and DHT- manufactured by Kyowa Chemical Industry Co., Ltd. 4A, DHT-4A-2, Alkamizer 4, Alkamizer 4-2, Alkamizer 7, etc. can be mentioned.

Such surface-treating agents are not limited to the above-mentioned higher fatty acids, and are known in the literature, for example, JP-A-60-1241.
And the like described on page 4 of the issue.

As the surface treatment agent described in the known literature,
Those generally used in this field, for example, anionic surfactants, silane coupling agents, titanium coupling agents, higher fatty acid esters and the like,
Specific examples thereof include, for example, sodium stearate, sodium oleate, anionic surfactants such as sodium laurylbenzenesulfonate, vinyltriethoxysilane, γ-aminopropyltrimethoxysilane, isopropyltriisostearoyl titanate, Silane-based or titanium-based coupling agents such as isopropyltridecylbenzenesulfonyl titanate, and higher fatty acid esters such as glycerin monostearate and glycerin monooleate are shown.

Component (b) used in the present invention Tetrakis-[methylene-3-(3,5-di-t-butyl-4-]
Specific examples of the commercially available product of (hydroxyphenyl)propionate]methane include “Irganox 1010” manufactured by Ciba Geigy and Asahi Denka Co., Ltd.
Examples thereof include "MARK AO-60" manufactured by Sumitomo Chemical Co., Ltd., "SUMIZER BP-101" manufactured by Sumitomo Chemical Co., Ltd., and "Tominox TT" manufactured by Yoshitomi Pharmaceutical Co., Ltd.

The component (a) used in the present invention is represented by the general formula (I) or the general formula (II) in which A ^q- is (CO ₃ )
^The hydrotalcite-based compound having ^2- is more preferable than the hydrotalcite-based compound having A ^q- (ClO ₄ ) ^- . For example, the above No. 1 to 4, No. 8
(A) represented by the formula (a), a hydrotalcite compound as a component and a component (b), tetrakis-[methylene-3-].
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate] The flame-retardant thermoplastic resin composition to which methane was added in combination is described in No. 1 above. 5 to 7, No. 11 to 13, represented by the formula (a), a hydrotalcite compound, and the component (b), tetrakis-[methylene-3-].
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate] Compared with a flame-retardant thermoplastic resin composition to which methane is added together, metal corrosion is further reduced.

Further, the flame-retardant thermoplastic resin composition used in the present invention, in which the component (b) is replaced with another phenolic antioxidant, has severe metal corrosion.

The component (a) hydrotalcite compound and the component (b) tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] used in the present invention. The amount of methane added is 0.01 to 5.0 at a ratio of 90:10% by weight to 10:90% by weight of the components (a) and (b) with respect to 100 parts by weight of the thermoplastic resin. Parts by weight, and preferably 70:30 to 30% by weight of the components (a) and (b).
It is 0.1 to 3.0% by weight in a ratio of 0 to 80% by weight, and most preferably, the above-mentioned components (a) and (b) are 60.
It is 0.1 to 3.0 parts by weight in the ratio of 40 to 30 to 70% by weight.

If the combined use amount of the component (a) and the component (b) is less than 0.01 part by weight, a remarkable effect of preventing metal corrosion cannot be obtained. Further, when the combined amount of the component (a) and the component (b) added exceeds 5.0 parts by weight, the expected effect of preventing metal corrosion due to the combined addition cannot be obtained.

The combined use ratio of the component (a) and the component (b),
When the component (a) is less than 10% by weight or more than 90% by weight, the expected effect of preventing metal corrosion due to the combined addition cannot be obtained.

The hydrotalcite compound of the component (a) and the phenolic antioxidant of the component (b) used in the present invention are added to a flame-retardant thermoplastic resin comprising a thermoplastic resin and a bromine flame retardant. The method may be carried out by a conventionally known technique. For example, the flame retardant thermoplastic resin and the additive may be mixed with a Henschel mixer, a ribbon blender, a Banbury mixer, or the additive. One-pack in advance may be mixed with the flame-retardant thermoplastic resin by the above-mentioned mixer. Further, known stabilizers such as metal soaps, organic phosphorus compounds, and ultraviolet absorbers can be used in combination with these additives. Further, if necessary, a lubricant, a pigment, a filler, a processing aid and the like can be added.

In practicing the present invention, the following embodiments can be mentioned. (1) 100 parts by weight of thermoplastic resin and bromine flame retardant 1
To 50 parts by weight of a flame-retardant thermoplastic resin, a component (a) a hydrotalcite compound and a component (b) tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxy). Phenyl)propionate] methane in an amount of 90:10% by weight to 10:90% by weight.
A flame-retardant thermoplastic resin composition obtained by adding 01 to 5.0 parts by weight. (2) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins and 1 to 50 parts by weight of a brominated flame retardant, ) Component hydrotalcite compound and (b) component tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight. % To 0.01-5.
A flame-retardant thermoplastic resin composition obtained by adding 0 part by weight. (3) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 1 to 50 parts by weight of a bromine flame retardant, and a component (a), a hydrotalcite compound, and
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant polyester resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (4) 100 parts by weight of thermoplastic resin and bromine flame retardant 1
To 50 parts by weight of the flame-retardant thermoplastic resin, the component (a) is represented by the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q- ) _X/q ·aH ₂ O (I) [In the formula (I), q is 1 or 2, A ^q- is a q-valent anion, that is, (CO ₃ ) ^2- or (ClO ₄ ) ^- , and X and a are the following conditions, respectively. Indicates a real number that satisfies.

0<X≦0.5, 0≦a<1] or the general formula (II) Mg_y1Zn_y2Al_X(OH)₂ (A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃)^2-Or (ClO_Four )-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (5) 100 parts by weight of thermoplastic resin and bromine flame retardant 1
To 50 parts by weight of the flame-retardant thermoplastic resin, the component (a) is represented by the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [ In the formula (III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (6) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins and 1 to 50 parts by weight of a brominated flame retardant, (a) ) component following general formula _{(I) Mg 1-X Al} X (OH) 2 (a q-) X / q · aH 2 O (I) [in the formula (I), q is 1 or 2, a ^q- is q-valent anion, i.e., (CO ₃₎ ^2-or (ClO ₄₎ ^- indicates a real number which satisfies a and, respectively, X and a are the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (II) Mg_y1Zn_y2Al_X (OH)₂ (A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃ )^2-Or (ClO_Four )^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (7) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins and 1 to 50 parts by weight of a brominated flame retardant, (a) ) Component The following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [wherein X and a in the formula (III) satisfy the following conditions, respectively. Indicates a satisfying real number.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _x (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (8) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 1 to 50 parts by weight of a bromine flame retardant, and a component (a) represented by the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q− ) _X/q ·aH ₂ O (I) [In the formula (I), q is 1 or 2, and A ^q− is a q-valent anion, that is, (CO ₃ ) ^{2 —} or ( ClO ₄ ) ^- , and X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (II) Mg_y1Zn_y2Al_X (OH)₂(A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃ )^2-Or (ClO_Four )^- And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant polyester resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (9) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 1 to 50 parts by weight of a bromine flame retardant, and a component (a) represented by the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [In the formula (III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane in an amount of 90 to 10% by weight to 10 to 90% by weight.
Flame-retardant polyester resin composition obtained by adding 0.01 to 5.0 parts by weight at a ratio of. (10) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Ingredients Hydrotalcite compounds and (b) ingredient
Tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane was added at a ratio of 70:30% by weight to 20:80% by weight to 0.2%.
A flame-retardant thermoplastic resin composition comprising 1 to 3.0 parts by weight. (11) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and bromine flame retardants 3 to 30
(A) component hydrotalcite compound and (b) component tetrakis-[methylene-3-(3,5-di-t-butyl-4-) in flame-retardant thermoplastic resin consisting of parts by weight.
Hydroxyphenyl)propionate] methane, 70
30% by weight to 20% by weight to 80% by weight at 0.1-3.
A flame-retardant thermoplastic resin composition obtained by adding 0 part by weight. (12) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 3 to 30 parts by weight of a bromine flame retardant, and a component (a), a hydrotalcite compound, and
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (13) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Ingredients The following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q- ) _X/q ·aH ₂ O (I) [wherein q is 1 or 2 in the formula (I), A ^q- is q-valent anion, i.e., (CO ₃₎ ^2-or (ClO ₄₎ ^- indicates a real number which satisfies a and, respectively, X and a are the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (II) Mg_y1Zn_y2Al_X(OH)₂(A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃)^2-Or (ClO_Four )^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (14) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Component General formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [wherein X and a in the formula (III) satisfy the following conditions, respectively. Indicates the real number to do.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≤0.5, y1+y2=1-X, y1≥
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (15) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and brominated flame retardants 3 to 30
(A) component of the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q- ) _X/q ·aH ₂ O (I) In (I), q is 1 or 2, A ^q- is a q-valent anion, that is, (CO ₃ ) ^2- or (ClO ₄ ) ^- , and X and a satisfy the following conditions, respectively. Indicates the real number to do.

0<X≦0.5, 0≦a<1] or the general formula (II) M_gy1 Zn_y2Al_X(OH)₂(A^q-)_X/q・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃)^2-Or (ClO_Four )^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (16) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and bromine flame retardants 3 to 30
(A) component of the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [In the formula (III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _x (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (17) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 3 to 30 parts by weight of a bromine flame retardant, and a component (a) represented by the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q− ) _X/q ·aH ₂ O (I) [In the formula (I), q is 1 or 2, and A ^q− is a q-valent anion, that is, (CO ₃ ) ^{2 —} or ( ClO ₄ ) ^- , and X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or general formula (II) Mg_y1Zn_y2Al_X(OH)₂ (A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃ )^2-Or (ClO_Four )^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (18) Polyester resin 1
A flame-retardant polyester-based resin comprising 00 parts by weight and 3 to 30 parts by weight of a bromine-based flame retardant, and a component (a) represented by the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _{X/ 2} ·aH ₂ O (III) [In the formula (III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 70 to 30% by weight to 20 to 80% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (19) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Ingredients Hydrotalcite compounds and (b) ingredient
Tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane was added at a ratio of 60:40% by weight to 30:70% by weight.
A flame-retardant thermoplastic resin composition comprising 1 to 3.0 parts by weight. (20) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and bromine flame retardants 3 to 30
(A) component hydrotalcite compound and (b) component tetrakis-[methylene-3-(3,5-di-t-butyl-4-) in flame-retardant thermoplastic resin consisting of parts by weight.
Hydroxyphenyl)propionate] methane, 60
40 to 30 wt% to 30 to 70 wt% 0.1-3.
A flame-retardant thermoplastic resin composition obtained by adding 0 part by weight. (21) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 3 to 30 parts by weight of a bromine flame retardant, and a component (a), a hydrotalcite compound, and
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (22) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Ingredients The following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q- ) _X/q ·aH ₂ O (I) [wherein q is 1 or 2 in the formula (I), A ^q- is q-valent anion, i.e., (CO ₃₎ ^2-or (ClO ₄₎ ^- indicates a real number which satisfies a and, respectively, X and a are the following conditions.

0<X≦0.5, 0≦a<1] or general formula (II) Mg_y1Zn_y2Al_X(OH)₂(A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃ )^2-Or (ClO_Four )^- And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (23) A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant, (a)
Component General formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [wherein X and a in the formula (III) satisfy the following conditions, respectively. Indicates the real number to do.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (24) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and bromine flame retardants 3 to 30
(A) component of the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q- ) _X/q ·aH ₂ O (I) In (I), q is 1 or 2, A ^q- is a q-valent anion, that is, (CO ₃ ) ^2- or (ClO ₄ ) ^- , and X and a satisfy the following conditions, respectively. Indicates the real number to do.

0<X≦0.5, 0≦a<1] or the general formula (II) Mg_y1Zn_y2Al_X (OH)₂ (A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃ )^2-Or (ClO_Four)^- And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (25) 100 parts by weight of a thermoplastic resin selected from polyester resins, polyamide resins, polystyrene resins and polyolefin resins, and bromine flame retardants 3 to 30
Into the flame-retardant thermoplastic resin composed of parts by weight, the component (a) is represented by the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [Formula ( In III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _x (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant thermoplastic resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (26) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 3 to 30 parts by weight of a bromine flame retardant, and a component (a) represented by the following general formula (I) Mg _1-X Al _X (OH) ₂ (A ^q− ) _X/q ·aH ₂ O (I) [In the formula (I), q is 1 or 2, and A ^q− is a q-valent anion, that is, (CO ₃ ) ^{2 —} or ( ClO ₄ ) ^- , and X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or general formula (II) Mg_y1Zn_y2Al_X (OH)₂ (A^q-)_X/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃)^2-Or (ClO_Four)^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of. (27) A flame-retardant polyester resin comprising 100 parts by weight of a polyester resin and 3 to 30 parts by weight of a bromine flame retardant, and a component (a) represented by the following general formula (III) Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (III) [In the formula (III), X and a each represent a real number satisfying the following conditions.

0<X≦0.5, 0≦a<1] or the general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) [formula In (IV), X, y1, y2 and a each represent a real number satisfying the following conditions.

0<X≦0.5, y1+y2=1−X, y1≧
y2, 0≦a<1], and a hydrotalcite compound,
Component (b) Tetrakis-[methylene-3-(3,5-
Di-t-butyl-4-hydroxyphenyl)propionate] methane from 60:40% by weight to 30:70% by weight.
Flame-retardant polyester-based resin composition obtained by adding 0.1 to 3.0 parts by weight at a ratio of.

[0101]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention include the above-mentioned embodiments (4) to (9), (13) to (18) and (22) to (27), and more preferred. As an embodiment, the above-mentioned embodiments (6) to (9), (15) to (18) and (24) to (2).
7), and the most preferred embodiments include the above-mentioned embodiments (7), (9), (16), (18),
(25) and (27) are mentioned.

[0102]

[Component (b): Phenolic antioxidant used in the present invention]

B-1: tetrakis-[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane [trade name: "IRGANOX 1010"
Ciba Geigy] [Additives other than the present invention] C-1:2,2-thio-diethylenebis[3-(3,3
5-di-t-butyl-4-hydroxyphenyl)propionate] [trade name: "IRGANOX 1035"
C-2: Octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate [trade name: "IRGANOX 1076" manufactured by Ciba-Geigy] C-3: N , N'-bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyl]hydrazine [trade name: "IRGANOX MD1024" manufactured by Ciba Geigy] C-4: 1,6-hexane Diol-bis[3-
(3,5-Di-t-butyl-4-hydroxyphenyl)propionate] [trade name: "IRGANO
X 259" manufactured by Ciba-Geigy] C-5: 3,5-di-t-butyl-4-hydroxytoluene C-6: dilaurylthiopropionate C-7: di(2,6-di-t - butyl-4-methylphenyl) pentaerythritol diphosphite [trade name: "ADK STAB PEP-36" manufactured by Asahi Denka Co., Ltd.] C-8: orthoboric acid [H ₃ BO _3] C-9: sesquioxide boron [B ₂ O _3] C-10: dibutyltin maleate C-11: dibutyltin 3-mercapto propionate C-12: 2-mercaptobenzimidazole zinc salt of imidazole [trade name: "NOCRAC MBZ" large Uchi Shinko Chemical Co., Ltd.] C-13: Zinc oxide C-14: Zinc borate C-15: 4A type zeolite [Product name: "Toyo Builder" Tosoh Corp.] [Example 1] Polyethylene terephthalate resin [Asahi Kasei Industrial Co., Ltd. Sunpet] 100 parts, brominated bisphenol A epoxy resin [Dainippon Ink and Chemicals Co., Ltd. Platherm EP-100] 15 parts, antimony trioxide 3 parts, polyethylene wax [Mitsui Petrochemical 0.5 part of HI-WAX 400PF manufactured by Kogyo Co., Ltd. was mixed with the additives shown in Tables 1 to 5, mixed with a Henschel mixer, and then melt-kneaded at 250° C. using an extruder to obtain pellets. It was Furthermore, put an appropriate amount of this pellet in a test tube,
It was placed in a heating block set at 180° C., covered with a silver plate, and the corrosion state of the silver plate after a certain period of time was visually observed. The corrosion state of the silver plate was visually determined according to the following criteria. ⊚: The silver plate is glossy and does not corrode at all. ○: A part of the silver plate is not glossy. Δ: A part of the silver plate is slightly corroded (discolored to brown or black brown). ×: About half of the silver plate is corroded (discolored to brown or black brown)
is doing. XX: The entire surface of the silver plate is corroded (discolored to brown or black brown).

[0103]

[Table 1]

[0104]

[Table 2]

[0105]

[Table 3]

[0106]

[Table 4]

[0107]

[Table 5]

Sample Nos. 1 to 33 are the same as Example No. 34.
To 75 are comparative examples. As is clear from the comparison of the results in Tables 1 to 5, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When the addition amount of the component (a) and the component (b) is smaller than the addition amount of the present invention as in the sample number 34, as in the same number 35,
When the addition amount of the component (a) and the component (b) is larger than the addition amount of the present invention, the addition ratio of the component (a) and the component (b) is out of the range of the present invention, as in the same numbers 36 to 39. If it is,
When only one component (a) or (b) is added, as in the same numbers 40 to 51, when additives other than the present invention are added, as in the same numbers 52 to 74, and in the same number 75 As described above, when no additive is added, the metal corrosiveness is not improved in any case. [Example 2] Polyamide resin [Nylon 6 Novamid 10 manufactured by Mitsubishi Engineering Plastics Co., Ltd.]
20CA2] 100 parts, bis(pentabromophenyl)
Ethane [Saytex 801 manufactured by Albemarle Co., Ltd.
0] 30 parts, antimony trioxide 5 parts, polyethylene wax [HI-WAX 40 manufactured by Mitsui Chemicals Petroleum Industry Co., Ltd.]
0PF] 1.0 part was mixed with the additives shown in Tables 6 to 8 and mixed with a Henschel mixer, and then mixed with an extruder to produce 25
Melt kneading was performed at 0° C. to obtain pellets. Further, an appropriate amount of this pellet was placed in a test tube, placed in a heating block set at 180° C., covered with a silver plate, and the corrosion state of the silver plate after a certain period of time was visually observed. The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0109]

[Table 6]

[0110]

[Table 7]

[0111]

[Table 8]

Sample Nos. 1 to 30 are Examples and the same No. 31
Reference numerals 45 to 45 are comparative examples. As is clear from the comparison of the results in Tables 6 to 8, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When the addition amounts of the component (a) and the component (b) are larger than those of the present invention as in the case of sample numbers 31 and 32, the same numbers 33 and 3 are used.
4, when the ratio of addition of the component (a) and the component (b) is outside the range of the present invention, as in the same numbers 35 to 39,
When only one of the components (a) or (b) is added, as in the same numbers 40 to 44, an additive other than the present invention is added, and as in the same number 45, no additive is added. In all cases, the metal corrosiveness is not improved. [Example 3] ABS resin [T manufactured by Techno Polymer Co., Ltd.
ECHNO ABS 130NP] 100 parts, tetrabrom bisphenol A carbonate oligomer [manufactured by Teijin Chemicals Ltd. Fireguard FG-7500] 10 parts,
Chlorinated polyethylene [Showa Denko KK Erasulene 3
03B] 2 parts were mixed with the additives shown in Table 9 and Table 10, mixed with a Henschel mixer, and then mixed with an extruder to obtain 20
Melt kneading was performed at 0° C. to obtain pellets. Further, an appropriate amount of this pellet was placed in a test tube, placed in a heating block set at 170° C., covered with a silver plate, and the corrosion state of the silver plate after a certain period of time was visually observed. The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0113]

[Table 9]

[0114]

[Table 10]

Sample Nos. 1 to 12 are Examples and the same No. 13
Nos. 28 to 28 are comparative examples. As is clear from the comparison of the results in Table 9 and Table 10, the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When only one component (a) or (b) is added as in Sample Nos. 13 to 15, the same Nos. 16 to 2 are added.
In the case of adding an additive other than the present invention as in No. 7, and in the case of not adding the additive as in No. 28, the metal corrosivity is not improved in any case. [Example 4] Polypropylene resin [Idemitsu Petrochemical Co., Ltd.
Idemitsu Polypro J-2000G] 100 parts, decabrom diphenyl ether [FR-1210 manufactured by Bromochem Far East Co., Ltd.] 5 parts, antimony trioxide 5
Parts, polyethylene wax [HI-WAX 400PF manufactured by Mitsui Petrochemical Industry Co., Ltd.], 1 part, and Table 11 and Table 1.
The additives shown in 2 were mixed, mixed with a Henschel mixer, and then melt-kneaded at 210° C. using an extruder to obtain pellets. Furthermore, put an appropriate amount of this pellet in a test tube, and
It was placed in a heating block set at ℃, covered with a silver plate, and the corrosion state of the silver plate after a certain time was visually observed. The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0116]

[Table 11]

[0117]

[Table 12]

Sample Nos. 1 to 13 are the same as Example No. 14
Nos. 27 to 27 are comparative examples. As is clear from the comparison of the results in Tables 11 and 12, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When only one of the components (a) and (b) is added as in Sample Nos. 14 to 16, the addition of the (a) component and the (b) component as in the same numbers 17 and 18 is performed. When the amount is less than the addition amount of the present invention, as in the same numbers 19 to 26, when an additive other than the present invention is added and the same number 2
As in No. 7, when no additive is added, the metal corrosiveness is not improved in any case. [Example 5] Polybutylene terephthalate resin [Teijin PBT resin C7000 manufactured by Teijin Ltd.] 100
Part, brominated polystyrene [Pyrocheck 68PB manufactured by Ferro Co., Ltd.] 30 parts, polyethylene wax [HI-WAX 400PF manufactured by Mitsui Petrochemical Industry Co., Ltd.] 1
The additives shown in Table 13 and Table 14 were mixed in parts, mixed with a Henschel mixer, and then melt-kneaded at 240° C. using an extruder to obtain pellets. Further, an appropriate amount of this pellet was placed in a test tube, placed in a heating block set at 160° C., covered with a silver plate, and the corrosion state of the silver plate after a certain period of time was visually observed. The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0119]

[Table 13]

[0120]

[Table 14]

Sample Nos. 1 to 13 are the same as Example No. 14
Nos. 28 to 28 are comparative examples. As is clear from the comparison of the results in Tables 13 and 14, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When only one of the components (a) and (b) is added as in Sample Nos. 14 to 16, the addition of the (a) component and the (b) component as in the same numbers 17 and 18 is performed. When the amount is less than the addition amount of the present invention, as in the same numbers 19 to 27, when an additive other than the present invention is added and the same number 2
As in No. 8, when no additive is added, the metal corrosiveness is not improved in any case. [Example 6] Polybutylene terephthalate resin [Teijin PBT resin C7000 manufactured by Teijin Ltd.] 100
Part, antimony trioxide 2 parts, polyethylene wax [HI-WAX 400PF manufactured by Mitsui Chemicals, Inc.] 0.
In 5 parts are shown the additives and flame retardants shown in Tables 15 and 16 [brominated bisphenol A-based epoxy resin [PLACEM EC-20 manufactured by Dainippon Ink and Chemicals, Inc.]. ] Were mixed, mixed with a Henschel mixer, and then melt-kneaded at 250° C. using an extruder to obtain pellets. Further, an appropriate amount of this pellet was put in a test tube, put in a heating block set at 190° C., covered with a silver plate, and the corrosion state of the silver plate after a certain time was visually observed. The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0122]

[Table 15]

[0123]

[Table 16]

Sample Nos. 1 to 12 are Examples and the same No. 13
Nos. 28 to 28 are comparative examples. As is clear from the comparison of the results in Tables 15 and 16, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When only one component (a) or (b) is added as in Sample Nos. 13 and 14, when an additive other than the present invention is added as in Nos. 15 to 26, and When no additives are added as in Nos. 27 and 28, the metal corrosiveness is not improved. [Example 7]
Polyethylene terephthalate resin [Asahi Kasei Kogyo KK Sunpet] 100 parts, ethylene bis(tetrabromophthalimide) [Albemarle Saytex]
BT-93W] 50 parts, antimony trioxide 3 parts, polyethylene wax [Mitsui Petrochemical Industry Co., Ltd. HI-
0.5 parts of WAX 400PF] was mixed with the additives shown in Tables 17 and 18, mixed with a Henschel mixer, and then melt-kneaded at 250° C. using an extruder to obtain pellets.
Further, an appropriate amount of this pellet was placed in a test tube, placed in a heating block set at 160° C., covered with a silver plate, and the corrosion state of the silver plate after a certain period of time was visually observed.
The corrosion state of the silver plate was judged according to the same criteria as in [Example 1].

[0125]

[Table 17]

[0126]

[Table 18]

Sample numbers 1 to 12 and Examples 13 to 26 are comparative examples. As is clear from the comparison of the results in Tables 17 and 18, it can be seen that the flame-retardant thermoplastic resin composition of the present invention has extremely little metal corrosion. When only one component (a) or (b) is added as in Sample Nos. 13 to 15, the same Nos. 16 to 2 are added.
In the case of adding an additive other than the present invention as in No. 5, and in the case of not adding the additive as in No. 26, the metal corrosivity is not improved.

[0128]

The flame-retardant thermoplastic resin composition of the present invention comprises
It can be seen that metal corrosion is extremely small.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaharu Akitsu 788 Kuji, Takatsu-ku, Kawasaki-shi, Kanagawa Sankyo Organic Synthesis Co., Ltd. Inner F-term (reference) 4J002 BB011 BB021 BB111 BB151 BC021 BC061 BC071 BC112 BH011 BH021 BN101 BN121 BN141 BN151 BN161 CD122 CF051 CF081 CG032 CL001 CL011 CL031 CL051 DE286 EB048 EB078 EJ098 EB138

Claims (7)

[Claims] 1. A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a brominated flame retardant,
Component (a) Hydrotalcite compounds and component (b) Tetrakis-[methylene-3-(3,5-di-t-
Butyl-4-hydroxyphenyl)propionate] methane is added at 0.01 to 5.0 parts by weight at a ratio of 90 to 10% by weight to 10 to 90% by weight, and a flame-retardant thermoplastic resin composition. 2. A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant,
Component (a) Hydrotalcite compounds and component (b) Tetrakis-[methylene-3-(3,5-di-t-
Butyl-4-hydroxyphenyl)propionate] methane is added in an amount of 70 to 30% by weight to 20 to 80% by weight in an amount of 0.1 to 3.0 parts by weight, which is a flame retardant thermoplastic resin composition. 3. A flame-retardant thermoplastic resin comprising 100 parts by weight of a thermoplastic resin and 3 to 30 parts by weight of a brominated flame retardant,
Component (a) Hydrotalcite compounds and component (b) Tetrakis-[methylene-3-(3,5-di-t-
Butyl-4-hydroxyphenyl)propionate] methane is added in an amount of 60 to 40% by weight to 30 to 70% by weight in an amount of 0.1 to 3.0 parts by weight, which is a flame retardant thermoplastic resin composition. 4. A hydrotalcite compound of component (a)
Is represented by the following general formula (I) Mg_1-X Al_X (OH)₂ (A^q-)_X/q ・AH₂ O (I) [In the formula (I), q is 1 or 2, and A^q-Is a q-value
Nion, that is, (CO₃)^2-Or (ClO_Four )^- And
X and a are real numbers that satisfy the following conditions.
You 0<X≦0.5, 0≦a<1] or the following general formula (II) Mg_y1Zn_y2Al_X (OH)₂ (A^q-)_x/q ・AH₂ O (II) [In Formula (II), q is 1 or 2, and A is^q-Is q-valued
Anion, that is, (CO ₃)^2-Or (ClO_Four )^-And
X, y1, y2 and a satisfy the following conditions
Indicates a real number. 0<X≤0.5, y1+y2=1-X, y1≥y2, 0≤a
Any of claims 1 to 3, which is a compound represented by <1>
The flame-retardant thermoplastic resin composition according to any one of the above. 5. A hydrotalcite compound of the component (a) has the following general formula (III): Mg _1-X Al _X (OH) ₂ (CO ₃ ) _X/ 2.aH ₂ O (III) In (III), X and a each represent a real number satisfying the following conditions. 0<X≦0.5, 0≦a<1] or the following general formula (IV) Mg _y1 Zn _y2 Al _X (OH) ₂ (CO ₃ ) _X/2 ·aH ₂ O (IV) [Formula ( X, y1, y2 and a in IV) each represent a real number satisfying the following conditions. 0<X≤0.5, y1+y2=1-X, y1≥y2, 0≤a
The flame-retardant thermoplastic resin composition according to any one of claims 1 to 4, which is a compound represented by <1]. 6. The thermoplastic resin according to claim 1, which is one kind or two or more kinds selected from a polyester resin, a polyamide resin, a polystyrene resin and a polyolefin resin. Flame-retardant thermoplastic resin composition. 7. The flame-retardant thermoplastic resin composition according to claim 1, wherein the thermoplastic resin is a polyester resin.