WO2017068834A1

WO2017068834A1 - Flame-retardant resin composition, flame-retardant resin molded article, image-display device, battery adaptor, wearable terminal, and copier

Info

Publication number: WO2017068834A1
Application number: PCT/JP2016/072962
Authority: WO
Inventors: 浩平清水; 稲垣　靖史; 上田　賢司; 貴裕大江; 道子中尾
Original assignee: ソニー株式会社
Priority date: 2015-10-20
Filing date: 2016-08-04
Publication date: 2017-04-27

Abstract

Provided is a flame-retardant resin composition having excellent flame retardancy, excellent mechanical properties, and excellent processability. Provided is a flame-retardant resin composition that contains a polyphenylene-ether/polystyrene mixed resin containing 55-85 % by mass of polyphenylene ether and 15-45 % by mass of polystyrene, and a flame retardant in which a sulfonic-acid group and/or a sulfonate group is introduced, wherein the flame retardant in which the sulfonic-acid group and/or the sulfonate group is introduced is contained in an amount that is 0.05-5 % by mass relative to the total mass of the polyphenylene-ether/polystyrene mixed resin.

Description

Flame retardant resin composition, flame retardant resin molded product, image display device, battery adapter, wearable terminal and copying machine

This technology relates to a flame retardant resin composition. More specifically, the present invention relates to a flame retardant resin composition, a flame retardant resin molded article, an image display device, a battery adapter, a wearable terminal, and a copying machine.

In recent years, in the fields of electrical / electronic equipment and OA equipment typified by home appliances, polyphenylene ether (hereinafter sometimes referred to as PPE) due to the need for mechanical strength accompanying the reduction in thickness and weight of various products. Polystyrene (hereinafter sometimes referred to as PS) mixed resin is used. In areas where flame retardancy is required, flame retardant PPE / PS resins to which flame retardancy is imparted by phosphorus-based (phosphate ester) flame retardants have come to be used frequently. A large amount (several mass% to several tens mass%) of a phosphorus-based flame retardant is added therein, which causes problems such as significantly reducing the mechanical properties of the resin composition.

As a technique using polyphenylene ether and polystyrene, there has been proposed a heat resistant resin composition containing polystyrenes and polyphenylene oxides, and at least one of polystyrenes and polyphenylene oxides has an acidic group (see Patent Document 1). reference). This technique aims to improve heat resistance.

Flame retardant and resin composition having acrylonitrile-styrene polymer introduced with sulfonic acid group and / or sulfonic acid group as flame retardant resin composition which suppresses decrease in mechanical strength while appropriately imparting flame retardancy A flame retardant resin composition containing a product has been proposed (see Patent Document 2).

JP-A-9-118796 JP 2005-272537 A

However, the technique proposed in Patent Document 1 may not be able to improve the flame retardancy even if the heat resistance can be improved. In addition, the flame retardant resin composition proposed in Patent Document 2 can suppress a decrease in mechanical strength while appropriately imparting flame retardancy. At present, it is desired to improve the mechanical properties by further suppressing the improvement and lowering of the mechanical strength. Furthermore, since the flame retardant resin composition is used in the fields of electric / electronic equipment and OA equipment typified by home appliances, improvement in workability of the flame retardant resin composition is also desired.

Therefore, in the present technology, a flame retardant resin composition having excellent flame retardancy, excellent mechanical properties and excellent processability, a flame retardant resin molded article using the flame retardant resin composition, and The main object is to provide an image display device, a battery adapter, a wearable terminal or a copier using the flame-retardant resin molded product.

As a result of intensive studies to solve the above-mentioned object, the inventors of the present application paid attention to the contents of polyphenylene ether and polystyrene in the polyphenylene ether / polystyrene mixed resin, and determined the contents of polyphenylene ether and polystyrene. By using the specified polyphenylene ether / polystyrene mixed resin and a flame retardant introduced with a sulfonic acid group and / or sulfonic acid group, we succeeded in improving flame retardancy, mechanical properties and processability. It came to complete.

That is, in the present technology, first, a polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein,
A flame retardant resin composition in which the content of the flame retardant into which the sulfonic acid group and / or sulfonic acid group is introduced is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. provide.
In the present technology, a polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group;
A phosphorus flame retardant,
The content of the flame retardant introduced with the sulfonic acid group and / or sulfonic acid group is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin,
Provided is a flame retardant resin composition in which the content of the phosphorus flame retardant is 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin.
The polyphenylene ether / polystyrene mixed resin may contain 65% by mass to 85% by mass of polyphenylene ether and 15% by mass to 35% by mass of polystyrene.
The polystyrene may have a weight average molecular weight (in terms of polystyrene) of 10,000 to 850,000.
The polyphenylene ether may have a weight average molecular weight (polystyrene conversion) of 30,000 to 70,000, and the polystyrene may have a weight average molecular weight (polystyrene conversion) of 30,000 to 250,000.
The flame retardant having the sulfonic acid group and / or sulfonic acid group introduced therein may be polystyrene and / or acrylonitrile-styrene copolymer having a sulfonic acid group and / or a sulfonic acid group introduced therein.
The flame retardant into which the sulfonic acid group and / or sulfonic acid group is introduced may form a counter ion with an alkali metal and / or an alkaline earth metal.
The alkali metal may be sodium or potassium.

Furthermore, the present technology provides a flame retardant resin molded product having a thickness of 0.6 to 3.0 mm using the flame retardant resin composition according to the present technology.

Furthermore, the present invention provides an image display device, a battery adapter, a wearable terminal or a copier using a flame retardant resin molded product having a thickness of 0.6 to 3.0 mm according to the present technology as a casing material.

According to this technology, flame retardancy, mechanical properties, and workability can be improved. In addition, the effect described here is not necessarily limited, and may be any effect described in the present technology.

Hereinafter, preferred embodiments for carrying out the present technology will be described. The embodiment described below shows an example of a typical embodiment of the present technology, and the scope of the present technology is not interpreted narrowly. The description will be given in the following order.
1. Flame Retardant Resin Composition (1) Flame Retardant Resin Composition (First and Second Embodiments)
(2) Polyphenylene ether / polystyrene mixed resin (3) Flame retardant introduced with sulfonic acid group and / or sulfonate group (4) Phosphorus flame retardant 2. Flame-retardant resin molded product Image display device, battery adapter, wearable terminal or copier

<1. Flame Retardant Resin Composition>
(1) Flame Retardant Resin Composition A first embodiment of a flame retardant resin composition according to the present technology is a polyphenylene containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene. A polyphenylene ether / polystyrene mixed resin containing an ether / polystyrene mixed resin and a flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein, and having a sulfonic acid group and / or a sulfonic acid group introduced therein The flame retardant resin composition is 0.05 to 5% by mass with respect to the total mass of the above. 1st Embodiment of the flame-retardant resin composition which concerns on this technique contains other components, such as an additive, in addition to the polyphenylene ether / polystyrene mixed resin and the flame retardant which introduce | transduced the sulfonic acid group and / or the sulfonate group. But you can.

A second embodiment of the flame retardant resin composition according to the present technology includes a polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene, A flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein and a phosphorus-based flame retardant, wherein the content of the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is a polyphenylene ether / polystyrene mixed resin. A flame retardant resin composition having a content of 0.05 to 5% by mass with respect to the total mass and a phosphorus flame retardant content of 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin It is. In the second embodiment of the flame retardant resin composition according to the present technology, in addition to a polyphenylene ether / polystyrene mixed resin, a flame retardant and a phosphorus flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group, additives, etc. Other ingredients may be included.

Since 1st Embodiment and 2nd Embodiment of the flame-retardant resin composition which concern on this technique have the above-mentioned structure, the effect of the outstanding flame retardance, the effect of the outstanding mechanical property, and the outstanding workability An effect is produced. And since 1st Embodiment and 2nd Embodiment of the flame-retardant resin composition which concern on this technique have the above-mentioned structure, both the effect of the outstanding flame retardance effect and the effect of the outstanding mechanical property are effective. It may be played at the same time, and both the effect of excellent flame retardancy and the effect of excellent processability may be achieved at the same time, and the effect of excellent mechanical properties and excellent processability Both effects may be played simultaneously. Furthermore, since 1st Embodiment and 2nd Embodiment of the flame-retardant resin composition which concern on this technique have the above-mentioned structure, it was excellent in the effect of the outstanding high flame retardance, the outstanding mechanical property, and The three effects of workability and the effect may be produced at the same time. It should be noted that the excellent flame retardant effect, the excellent mechanical property effect, and the excellent processability effect are obtained by reducing the thickness and weight of the first and second embodiments of the flame retardant resin composition according to the present technology. Even if it is formed into a slab, it is produced.

In the first embodiment of the flame retardant resin composition according to the present technology, a polyphenylene ether / polystyrene mixed resin and a flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group are mixed to provide a raw material for the flame retardant resin. The mixture can be prepared, and then the raw material mixture of the flame retardant resin can be kneaded by a kneader to be dispersed substantially uniformly. Examples of the kneader include a tumbler, a reblender, a mixer, an extruder, and a kneader.

In the second embodiment of the flame retardant resin composition according to the present technology, a polyphenylene ether / polystyrene mixed resin, a flame retardant introduced with a sulfonate group and / or a sulfonate group, and a phosphorus flame retardant are mixed. A raw material mixture of a flame retardant resin can be prepared, and then the raw material mixture of the flame retardant resin can be kneaded with a kneader to be dispersed substantially uniformly. Specific examples of the kneading apparatus are as described above.

Hereinafter, (2) polyphenylene ether / polystyrene mixed resin, and (3) sulfonate group and / or sulfonate group, which are contained in the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology The flame retardant that has been introduced will be described in detail.

(2) Polyphenylene ether / polystyrene mixed resin The first embodiment and the second embodiment of the flame retardant resin composition according to the present technology include a polyphenylene ether / polystyrene mixed resin. The polyphenylene ether / polystyrene mixed resin contains 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene. The polyphenylene ether / polystyrene mixed resin preferably contains 65% by mass to 85% by mass of polyphenylene ether and 15% by mass to 35% by mass of polystyrene. The polyphenylene ether / polystyrene mixed resin may contain other resin components in addition to polyphenylene ether and polystyrene. Polyphenylene ether and polystyrene can be obtained by methods known in the art.

As described above, the polyphenylene ether / polystyrene mixed resin is included in the first and second embodiments of the flame retardant resin composition according to the present technology, and includes 55% by mass to 85% by mass of polyphenylene ether and 15% of polystyrene. In the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology, the excellent flame retardant effect, the excellent mechanical property effect, Excellent workability, especially excellent flame retardancy and excellent mechanical properties may be achieved at the same time, with excellent flame retardancy and excellent processability. The effects may be played at the same time in a well-balanced manner, and the effects of excellent mechanical properties and excellent workability may be played at the same time in a well-balanced manner, with excellent flame-retardant effects and excellent mechanical properties effects. And excellent processing Three effects with the effects of the sometimes achieved good balance at the same time. In addition, as described above, the polyphenylene ether / polystyrene mixed resin is included in the first and second embodiments of the flame retardant resin composition according to the present technology, and 65% by mass to 85% by mass of the polyphenylene ether, Since it preferably contains 15% by mass to 35% by mass of polystyrene, in the first and second embodiments of the flame retardant resin composition according to the present technology, a further excellent flame retardant effect and further excellent The effects of mechanical properties and further excellent workability are achieved, especially the effects of even better flame retardancy and better mechanical properties may be achieved at the same time in a balanced manner. The effects of flammability and better processability may be achieved at the same time in a balanced manner, and the effects of better mechanical properties and better processability may be achieved at the same time in a balanced manner. There the effect of flame retardancy, further the effect of the excellent mechanical properties, also three effects and better processability of the effect can be attained with good balance at the same time.

In the polyphenylene ether / polystyrene mixed resin, if the polyphenylene ether is less than 55% by mass, an excellent flame retardancy effect and an excellent mechanical property may not be obtained, and the polyphenylene ether exceeds 85% by mass. If so, there is a possibility that an excellent workability effect cannot be obtained. Further, in the polyphenylene ether / polystyrene mixed resin, if the polystyrene is less than 15% by mass, an excellent processability effect may not be obtained, and if the polystyrene exceeds 45% by mass, excellent flame retardancy is obtained. Or the effect of excellent mechanical properties may not be obtained.

The polyphenylene ether is not particularly limited, and specifically, poly (2,6-dimethyl-1,4-phenylene) ether, poly (2-methyl-6-ethyl-1,4-phenylene) ether, (2,6-diethyl-1,4-phenylene) ether, poly (2-ethyl-6-n-propyl-1,4-phenylene) ether, poly (2,6-di-n-propyl-1,4) -Phenylene) ether, poly (2-methyl-6-n-butyl-1,4-phenylene) ether, poly (2-ethyl-6-isopropyl-1,4-phenylene) ether, poly (2-methyl-6) -Chloroethyl-1,4-phenylene) ether, poly (2-methyl-6-hydroxyethyl-1,4-phenylene) ether and poly (2-methyl-6-chloroethyl)- , 4-phenylene) ether. Of these, poly (2,6-dimethyl-1,4-phenylene) ether is preferred from the viewpoint of easy availability of raw materials and processability.

The weight average molecular weight (polystyrene conversion) of polyphenylene ether is not particularly limited and may be any value, but is preferably 10,000 to 200,000. By using a polyphenylene ether having a weight average molecular weight in this preferred range, in the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology, a further excellent effect on workability is achieved. The balance between the flammability effect and the workability effect is further improved.

The weight average molecular weight (in terms of polystyrene) of polystyrene is not particularly limited and may be any value, but is preferably 10,000 to 850,000, more preferably 30,000 to 250,000. . By using polystyrene having a weight average molecular weight in this preferred range and a more preferred range, in the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology, a further excellent effect on workability is achieved. This further improves the balance between the flame retardant effect and the workability effect.

Further, as the polyphenylene ether / polystyrene mixed resin, the weight average molecular weight of the polyphenylene ether (polystyrene conversion) is 30,000 to 70,000, and the weight average molecular weight of the polystyrene (polystyrene conversion) is 30,000 to 250,000. 000 is preferred. By using polyphenylene ether and polystyrene having a weight average molecular weight in this preferred range, the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology have further excellent effects on processability. This further improves the balance between the flame retardant effect and the workability effect.

In addition, although the measurement of the weight average molecular weight (polystyrene conversion) of polystyrene and the weight average molecular weight (polystyrene conversion) of polyphenylene ether can be measured by a conventionally known arbitrary method, for example, GPC method (Gel Permeation Chromatography: gel permeation chromatography). Can be measured in terms of polystyrene.

(3) Flame retardant introduced with sulfonic acid group and / or sulfonate group In the first and second embodiments of the flame retardant resin composition according to the present technology, a sulfonic acid group and / or a sulfonate group are introduced. Containing flame retardant. The content of the flame retardant into which a sulfonic acid group and / or a sulfonic acid group is introduced is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. The content of the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced is preferably 0.1 to 1% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. A flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein can be obtained by a known method in the art.

As described above, the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced is the same as that of the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology. Since it is contained in an amount of 0.05 to 5% by mass relative to the mass, excellent flame retardancy effects are exhibited in the first and second embodiments of the flame retardant resin composition according to the present technology. In addition, as described above, a flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced is a polyphenylene ether / polystyrene mixed resin in the first embodiment and the second embodiment of the flame retardant resin composition according to the present technology. In the first and second embodiments of the flame retardant resin composition according to the present technology, a further excellent flame retardant effect is achieved. Is done.

The flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is a flame retardant having a sulfonic acid group or a sulfonic acid group introduced therein, or a flame retardant having a sulfonic acid group and a sulfonic acid group introduced therein.

The sulfonic acid group is —SO ₃ H, and examples of the sulfonic acid base include a sulfonic acid Na base, a sulfonic acid K base, a sulfonic acid Li base, a sulfonic acid Ca base, a sulfonic acid Mg base, a sulfonic acid Al base, and a sulfone. Examples include acid Zn base, sulfonic acid Sb base, and sulfonic acid Sn base. By introducing sulfonic acid groups and sulfonate groups into the flame retardant, it is possible to impart high flame retardancy to the flame retardant resin composition. Furthermore, sulfonate groups are introduced into the flame retardant than sulfonic acid groups By doing, higher flame retardancy can be imparted to the flame retardant resin composition.

The flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein may be any flame retardant (a flame retardant compound) as long as a sulfonic acid group and / or a sulfonic acid group is introduced, but the sulfonic acid group and / or A polystyrene or acrylonitrile-styrene copolymer into which a sulfonate group has been introduced is preferred, and a polystyrene and acrylonitrile-styrene copolymer into which a sulfonate group and / or a sulfonate group have been introduced are preferred. The flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is also preferably a styrene 4-vinylbenzene sulfonate potassium copolymer.

It is preferable that the flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group forms a counter ion with an alkali metal or an alkaline earth metal, and forms a counter ion with an alkali metal or an alkaline earth metal. It is preferable. The alkali metal is preferably sodium or potassium. The alkaline earth metal is preferably magnesium or calcium.

Hereinafter, (4) the phosphorus-based flame retardant contained in the second embodiment of the flame retardant resin composition according to the present technology will be described in detail.

(4) Phosphorus Flame Retardant The content of the phosphorus flame retardant in the second embodiment of the flame retardant resin composition according to the present technology is 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. is there. The content of the phosphorus flame retardant is preferably 3 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. The phosphorus-based flame retardant can be obtained by a known method in the art.

As described above, the phosphorus-based flame retardant is contained in the second embodiment of the flame retardant resin composition according to the present technology at 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. In the second embodiment of the flame retardant resin composition according to the technology, an excellent flame retardant effect and an excellent workability effect are exhibited, and in particular, an effect of excellent flame retardancy and excellent processability. Are played in a balanced manner. Further, as described above, the phosphorus-based flame retardant is contained in the second embodiment of the flame-retardant resin composition according to the present technology at 3 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin. In the second embodiment of the flame retardant resin composition according to the present technology, a further excellent flame retardant effect and a further excellent workability effect are exhibited, and in particular, a further excellent flame retardant property and further excellent In addition, the workability and the effect are simultaneously balanced.

Examples of the phosphorus flame retardant include organic phosphate ester flame retardants, halogenated phosphate ester flame retardants, and inorganic phosphorus flame retardants.

Examples of organic phosphate ester flame retardants include bisdiphenyl phosphate, triphenyl phosphate, methyl neobenzyl phosphate, pentaerythritol diethyl diphosphate, methyl neopentyl phosphate, bisphenol A bis (diphenyl phosphate, phenyl neodyle). Examples include pentyl phosphate, pentaerythritol diphenyl diphosphate, dicyclopentyl high positive phosphate, dineopentyl hypophosphite, phenyl pyrocatechol phosphate, ethyl pyrocatechol phosphate, dipirocatechol high positive phosphate. Any one kind or a plurality of kinds can be mixed and used.

Examples of the halogenated phosphate ester flame retardant include tris (β-chloroethyl) phosphate, tris (dichloropropyl) phosphate, tris (β-bromoethyl) phosphate, tris (dibromopropyl) phosphate, tris (chloropropyl) phosphate, tris (dibromo). Phenyl) phosphate, tris (tribromophenyl) phosphate, tris (tribromoneopentyl) phosphate, condensed polyphosphate, condensed polyphosphonate, etc., and any one or a mixture of these may be used Is possible.

Examples of the inorganic phosphorus flame retardant include red phosphorus and inorganic phosphate, and one or both of them can be used in combination.

<2. Flame-retardant resin molded product>
The embodiment of the flame retardant resin molded product according to the present technology is the same as the embodiment of the flame retardant resin composition according to the present technology (the first and second embodiments of the flame retardant resin composition are combined to be flame retardant). A molded product having a thickness of 0.6 to 3.0 mm, which may be referred to as an embodiment of a functional resin composition. The embodiment of the flame-retardant resin molded product according to the present technology is preferably a molded product having a thickness of 1.5 to 2.5 mm using the embodiment of the flame-retardant resin composition according to the present technology. . The embodiment of the flame retardant resin molded product according to the present technology may be applied to the present technology regardless of whether the thickness is 0.6 to 3.0 mm or the preferable thickness is 1.5 to 2.5 mm. Since the embodiment of the flame retardant resin composition is used, the present invention provides excellent high flame retardancy, excellent mechanical properties, and excellent workability.

The embodiment of the flame retardant resin molded product according to the present technology is the same as the embodiment of the flame retardant resin composition according to the present technology by injection molding, injection compression molding, extrusion molding, blow molding, vacuum molding, press molding, foaming. It is obtained in a state of being molded into a predetermined shape by a molding method such as molding or supercritical molding.

<3. Image display device, battery adapter, wearable terminal or copier>
The embodiment of the image display device, battery adapter, wearable terminal, or copying machine according to the present technology uses the embodiment of the flame-retardant resin molded product according to the present technology having a thickness of 0.6 to 3.0 mm as a casing material. It was. Since the embodiment of the image display device, battery adapter, wearable terminal or copying machine according to the present technology uses the embodiment of the flame-retardant resin molded product according to the present technology having a thickness of 0.6 to 3.0 mm, Excellent high flame retardancy, excellent mechanical properties, and excellent workability.

It should be noted that the effects described in this specification are merely examples and are not limited, and other effects may be obtained.

In addition, the present technology may have the following configurations.
(1)
A polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein,
A flame retardant resin composition, wherein the content of the flame retardant into which the sulfonic acid group and / or sulfonic acid group is introduced is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin.
(2)
A polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group;
A phosphorus flame retardant,
The content of the flame retardant introduced with the sulfonic acid group and / or sulfonic acid group is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin,
A flame retardant resin composition, wherein the content of the phosphorus flame retardant is 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin.
(3)
The flame retardant resin composition according to (1) or (2), wherein the polyphenylene ether / polystyrene mixed resin contains 65% by mass to 85% by mass of polyphenylene ether and 15% by mass to 35% by mass of polystyrene.
(4)
The flame retardant resin composition according to any one of (1) to (3), wherein the polystyrene has a weight average molecular weight (in terms of polystyrene) of 10,000 to 850,000.
(5)
The weight average molecular weight (polystyrene conversion) of the polyphenylene ether is 30,000 to 70,000, and the weight average molecular weight (polystyrene conversion) of the polystyrene is 30,000 to 250,000. The flame retardant resin composition according to any one of (4).
(6)
(1) to (5), wherein the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is a polystyrene and / or acrylonitrile-styrene copolymer having a sulfonic acid group and / or a sulfonic acid group introduced therein. The flame retardant resin composition according to any one of the above.
(7)
The flame retardant introduced with the sulfonic acid group and / or sulfonic acid group forms a counter ion with an alkali metal and / or alkaline earth metal, according to any one of (1) to (6) Flame retardant resin composition.
(8)
The flame retardant resin composition according to (7), wherein the alkali metal is sodium or potassium.
(9)
A flame-retardant resin molded article having a thickness of 0.6 to 3.0 mm, using the flame-retardant resin composition according to any one of (1) to (8).
(10)
An image display device, a battery adapter, a wearable terminal or a copier using the flame retardant resin molded product having a thickness of 0.6 to 3.0 mm as described in (9) as a casing material.

Hereinafter, the effects of the present technology will be described in detail with examples. Note that the scope of the present technology is not limited to the examples.

<Method for evaluating physical properties>
As evaluation of physical properties, three evaluations of processability, HDT (deflection temperature under load), and flame retardancy were evaluated. The physical properties were evaluated by drying the molded resin pellets comprising the flame-retardant resin compositions obtained in Examples 1 to 12 and Comparative Examples 1 to 7 described later, after drying at 80 ° C. for 4 hours, This was carried out using a molded product molded for use. The evaluation criteria of the physical properties were comprehensive judgments of the above three evaluations, the comprehensive judgments “A” and “B” were accepted, and the comprehensive judgment “C” was rejected. The difference between the determinations of the comprehensive determinations “A” and “B” is that the case where the evaluation criteria for workability described later is “A” determination is the comprehensive determination “A”, and the evaluation criteria for workability is “B” determination. The case was defined as a comprehensive judgment “B”. In addition, each evaluation method and evaluation criteria for evaluation of workability, evaluation of HDT (deflection temperature under load), and evaluation of flame retardancy are as follows.

(Processability evaluation method)
Evaluation of processability can be performed by using a mold for a rear cover for television and molding using the flame retardant resin compositions obtained in Examples 1 to 12 and Comparative Examples 1 to 7 described later. The appearance (sink marks and weld line state) was confirmed, and the strength of the weld portion was evaluated to determine whether it was at a practical level.

(Processing evaluation criteria)
The evaluation standard of workability was determined as “A” or “B” when it was at a practical level, and as “C” when it was not at a practical level. In addition, the difference between the judgments of the workability evaluation judgments “A” and “B” is that the workability is evaluated and the workability evaluation judgment is “A” when there is no defect within an acceptable range in appearance or the like. In the case where the processing was possible, but there was a defect within an acceptable range in appearance or the like, the evaluation evaluation of workability was set to “B”.

(Evaluation method of HDT (deflection temperature under load))
The evaluation of HDT (deflection temperature under load) is in accordance with ASTM D648, using the flame-retardant resin compositions obtained in Examples and Comparative Examples described later, and using a strip-shaped molded product having a thickness of 6.4 mm, Measurement was performed at a load of 1.8 MP.

(Evaluation criteria for HDT (deflection temperature under load))
The evaluation of HDT (deflection temperature under load) was based on achieving an HDT of 130 ° C. The evaluation criteria for HDT (deflection temperature under load) was acceptable if an HDT of 130 ° C. or higher was achieved.

(Flame retardancy evaluation method)
Flame retardant evaluation was performed in accordance with UL-94, and was formed using a flame retardant resin composition obtained in Examples 1 to 12 and Comparative Examples 1 to 7 described later, and was formed into a strip shape having a thickness of 2.0 mm. Using the product, a vertical combustion test was conducted. The ignition was performed twice for 10 seconds. Evaluation was performed by measuring the number of combustion seconds after the first flame contact and the second flame contact of the five molded products, the presence or absence of cotton ignition by the drop, and the like.

(Flame retardant evaluation criteria)
If the evaluation standard of flame retardancy is V-1 or higher, the flame retardance is high and the result is accepted. V-2 or lower was rejected as having low flame retardancy. The contents of the evaluation criteria for V-0, V-1, and V-2 are as shown in Table 1 below. In addition, evaluation (failed) which has not achieved V means V nonconformity.

<Example 1>
80 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 20 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene was obtained. This polyphenylene ether / polystyrene mixed resin and styrene 4-polystyrene are 0.3% by mass based on the total mass of the polyphenylene ether / polystyrene mixed resin (0.3 parts by mass with respect to 100 parts by mass of the polyphenylene ether / polystyrene mixed resin). A flame retardant resin raw material mixture is prepared by mixing with vinyl benzene sulfonate potassium copolymer at 300 ° C., and this flame retardant resin raw material mixture is supplied to an extruder and kneaded at 260 ° C. to be flame retardant. A resin composition was obtained. After pelletizing the flame retardant resin composition, the pellet is put into a molding machine, and a strip-shaped test piece (a flame retardant resin molded product) made of the flame retardant resin composition by injection molding at 260 ° C. )

<Example 2>
300 parts by mass of 70 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 30 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) The mixture was mixed at 0 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 70% by mass of polyphenylene ether and 30% by mass of polystyrene. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Example 3>
60 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 40 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 60% by mass of polyphenylene ether and 40% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Comparative Example 1>
90 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 10 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 90% by mass of polyphenylene ether and 10% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Comparative Example 2>
50 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 50 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. The mixture was mixed at 0 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 50% by mass of polyphenylene ether and 50% by mass of polystyrene. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

Table 1 summarizes the compositions of the flame-retardant resin compositions obtained in Examples 1 to 3 and Comparative Examples 1 and 2. In addition, the results of evaluation of processability, evaluation of HDT (deflection temperature under load) and evaluation of flame retardance carried out using the flame retardant resin compositions obtained in Examples 1 to 3 and Comparative Examples 1 and 2 Are also shown in Table 2.

<Example 4>
80 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 20 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Example 5>
300 parts by mass of 70 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 30 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) The mixture was mixed at 0 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 70% by mass of polyphenylene ether and 30% by mass of polystyrene. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Example 6>
60 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 40 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 60% by mass of polyphenylene ether and 40% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Comparative Example 3>
Except that the styrene 4-vinylbenzenesulfonate potassium copolymer was not used, a flame-retardant resin composition was obtained in the same manner as in Example 1, and a strip-shaped test piece comprising the flame-retardant resin composition ( Flame retardant resin molded product) was obtained.

<Comparative Example 4>
300 parts by mass of 70 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 30 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) The mixture was mixed at 0 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 70% by mass of polyphenylene ether and 30% by mass of polystyrene. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used and that the styrene 4-vinylbenzenesulfonate potassium copolymer was not used. A strip-shaped test piece (a flame-retardant resin molded product) made of the flame-retardant resin composition was obtained.

<Comparative Example 5>
60 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 40 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 60% by mass of polyphenylene ether and 40% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used and that the styrene 4-vinylbenzenesulfonate potassium copolymer was not used. A strip-shaped test piece (a flame-retardant resin molded product) made of the flame-retardant resin composition was obtained.

Table 3 summarizes the compositions of the flame retardant resin compositions obtained in Examples 4 to 6 and Comparative Examples 3 to 5. Further, the results of evaluation of processability, evaluation of HDT (deflection temperature under load) and evaluation of flame retardance carried out using the flame retardant resin compositions obtained in Examples 4 to 6 and Comparative Examples 3 to 5 Are also shown in Table 3.

<Example 7>
80 parts by mass of polyphenylene ether (PPE1) (manufactured by Bluestar New Chemicals Co. Ltd, grade name: LXR050C) and 20 parts by mass of polystyrene (PS1) (manufactured by PS Japan, grade name: H9152) are 300. By mixing at 0 ° C., a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene was obtained. A flame retardant resin composition was obtained in the same manner as in Example 1 except that this polyphenylene ether / polystyrene mixed resin was used, and a strip-shaped test piece (flame retardant) comprising the flame retardant resin composition was obtained. Resin molded product).

<Example 8>
Phosphorus flame retardant (3-8 parts by mass relative to 100 parts by mass of polyphenylene ether / polystyrene mixed resin) based on the total mass of the polyphenylene ether / polystyrene mixed resin (CR-841 manufactured by Daihachi Chemical Industry Co., Ltd.) A flame-retardant resin composition was obtained in the same manner as in Example 1 except that a strip-shaped test piece (flame-retardant resin molded product) comprising the flame-retardant resin composition was obtained. .

<Comparative Example 6>
Except that the styrene 4-vinylbenzenesulfonate potassium copolymer was not used, a flame-retardant resin composition was obtained in the same manner as in Example 1, and a strip-shaped test piece comprising the flame-retardant resin composition ( Flame retardant resin molded product) was obtained.

<Comparative Example 7>
Instead of using a potassium styrene 4-vinylbenzenesulfonate that is 0.3% by mass (0.3 parts by mass with respect to 100 parts by mass of polyphenylene ether / polystyrene mixed resin) based on the total mass of the polyphenylene ether / polystyrene mixed resin In addition, a phosphorus-based flame retardant (10% by mass with respect to 100 parts by mass of the polyphenylene ether / polystyrene mixed resin) based on the total mass of the polyphenylene ether / polystyrene mixed resin (CR-8 manufactured by Daihachi Chemical Industry Co., Ltd.). 741), a flame retardant resin composition was obtained in the same manner as in Example 1, and a strip-shaped test piece (flame retardant resin molded product) comprising the flame retardant resin composition was obtained. It was.

Table 3 summarizes the compositions of the flame retardant resin compositions obtained in Examples 7 to 8 and Comparative Examples 6 to 7. The results of evaluation of processability, evaluation of HDT (deflection temperature under load) and evaluation of flame retardance carried out using the flame retardant resin compositions obtained in Examples 7 to 8 and Comparative Examples 6 to 7 Are also shown in Table 3.

<Example 9>
Styrene monomer was polymerized by radical polymerization to obtain polystyrene (PS3) having a weight average molecular weight of 55100. In addition, the weight average molecular weight was measured by polystyrene conversion using GPC method (Gel Permeation Chromatography: gel permeation chromatography). Next, 80 parts by mass of polyphenylene ether (PPE2) having a weight average molecular weight of 49,500 (polystyrene conversion) (manufactured by Bluestar New Chemical Materials Co. Ltd, grade name: LXR050C) and 20 parts by mass of weight average molecular weight 55100. Polystyrene (PS3) was mixed at 300 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene. This polyphenylene ether / polystyrene mixed resin and styrene 4-polystyrene are 0.3% by mass based on the total mass of the polyphenylene ether / polystyrene mixed resin (0.3 parts by mass with respect to 100 parts by mass of the polyphenylene ether / polystyrene mixed resin). A flame retardant resin raw material mixture is prepared by mixing with vinyl benzene sulfonate potassium copolymer at 300 ° C., and this flame retardant resin raw material mixture is supplied to an extruder and kneaded at 260 ° C. to be flame retardant. A resin composition was obtained. After the flame-retardant resin composition is pelletized, the pellet is put into a molding machine and injection molded at 260 ° C. to form a strip-shaped test piece (flame-retardant resin molded product) made of the flame-retardant resin composition Got.

<Example 10>
In the same manner as in Example 9, the styrene monomer was polymerized by radical polymerization to obtain polystyrene (PS4) having a weight average molecular weight of 205000. And the weight average molecular weight was measured by GPC method in polystyrene conversion similarly to Example 9. Next, 80 parts by mass of polyphenylene ether (PPE2) having a weight average molecular weight of 49,500 (polystyrene conversion) (manufactured by Bluestar New Chemical Materials Co. Ltd, grade name: LXR050C) and 20 parts by mass of weight average molecular weight 205000. Polystyrene (PS4) was mixed at 300 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene. And the strip-shaped test piece (flame retardant resin molded product) which consists of a flame retardant resin composition was obtained by the completely same method as Example 9 except having used this polyphenylene ether / polystyrene mixed resin.

<Example 11>
Similarly to Example 9, the styrene monomer was polymerized by radical polymerization to obtain polystyrene (PS2) having a weight average molecular weight of 13900. And the weight average molecular weight was measured by GPC method in polystyrene conversion similarly to Example 9. Next, 80 parts by mass of polyphenylene ether (PPE2) having a weight average molecular weight of 49500 (polystyrene conversion) (manufactured by Bluestar New Chemical Materials Co. Ltd, grade name: LXR050C) and 20 parts by mass of weight average molecular weight 13900 Polystyrene (PS2) was mixed at 300 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene. And the strip-shaped test piece (flame retardant resin molded product) which consists of a flame retardant resin composition was obtained by the completely same method as Example 9 except having used this polyphenylene ether / polystyrene mixed resin.

<Example 12>
Similarly to Example 9, a styrene monomer was polymerized by radical polymerization to obtain polystyrene (PS5) having a weight average molecular weight of 815,000. And the weight average molecular weight was measured by GPC method in polystyrene conversion similarly to Example 9. Next, 80 parts by mass of polyphenylene ether (PPE2) having a weight average molecular weight of 49,500 (manufactured by Bluestar New Chemical Materials Co. Ltd., grade name: LXR050C) and 20 parts by mass of polystyrene having a weight average molecular weight of 815,000 (PS5) Were mixed at 300 ° C. to obtain a polyphenylene ether / polystyrene mixed resin composed of 80% by mass of polyphenylene ether and 20% by mass of polystyrene. And the strip-shaped test piece (flame retardant resin molded product) which consists of a flame retardant resin composition was obtained by the completely same method as Example 9 except having used this polyphenylene ether / polystyrene mixed resin.

Table 5 summarizes the compositions of the flame retardant resin compositions obtained in Examples 9 to 12. Table 5 also shows the results of evaluation of processability, evaluation of HDT (deflection temperature under load), and evaluation of flame retardance, which were carried out using the flame retardant resin compositions obtained in Examples 9 to 12.

As is clear from Tables 2 to 5, the evaluation results of the flame retardant resin compositions used in Examples 1 to 12 were overall judgments A and B, whereas Comparative Examples 1 to The evaluation result of the flame retardant resin composition used in No. 7 was a comprehensive judgment C. As a result, the flame retardant resin compositions used in Examples 1 to 12 are more workable than the flame retardant resin compositions used in Comparative Examples 1 to 7, and HDT (load deflection). Temperature) and flame retardancy.

In addition, the flame retardant resin molded products obtained by molding the flame retardant resin compositions used in Examples 1 to 12 were molded from the flame retardant resin compositions used in Comparative Examples 1 to 7. It was confirmed that the flame-retardant resin molded product obtained by doing so has processability equal to or higher than the equivalent performance, HDT (deflection temperature under load), and flame retardancy.

Furthermore, an image display device, a battery adapter, a wearable terminal, or a copier using the flame-retardant resin molded product molded by using the flame-retardant resin composition used in Examples 1 to 12 as a casing material Is an image display device, a battery adapter, a wearable terminal or a copy using a flame retardant resin molded product obtained by molding the flame retardant resin composition used in Comparative Examples 1 to 7 as a casing material It can be considered that the machine has workability, HDT (deflection temperature under load), and flame retardancy that are equal to or higher than equivalent performance.

Claims

A polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein,
A flame retardant resin composition, wherein the content of the flame retardant into which the sulfonic acid group and / or sulfonic acid group is introduced is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin.
A polyphenylene ether / polystyrene mixed resin containing 55% by mass to 85% by mass of polyphenylene ether and 15% by mass to 45% by mass of polystyrene;
A flame retardant introduced with a sulfonic acid group and / or a sulfonic acid group;
A phosphorus flame retardant,
The content of the flame retardant introduced with the sulfonic acid group and / or sulfonic acid group is 0.05 to 5% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin,
A flame retardant resin composition, wherein the content of the phosphorus flame retardant is 1 to 9% by mass with respect to the total mass of the polyphenylene ether / polystyrene mixed resin.
2. The flame retardant resin composition according to claim 1, wherein the polyphenylene ether / polystyrene mixed resin contains 65% by mass to 85% by mass of polyphenylene ether and 15% by mass to 35% by mass of polystyrene.
The flame retardant resin composition according to claim 2, wherein the polyphenylene ether / polystyrene mixed resin contains 65% by mass to 85% by mass of polyphenylene ether and 15% by mass to 35% by mass of polystyrene.
2. The flame retardant resin composition according to claim 1, wherein the polystyrene has a weight average molecular weight (in terms of polystyrene) of 10,000 to 850,000.
The flame retardant resin composition according to claim 2, wherein the polystyrene has a weight average molecular weight (polystyrene conversion) of 10,000 to 850,000.
The weight average molecular weight (polystyrene conversion) of the polyphenylene ether is 30,000 to 70,000, and the weight average molecular weight (polystyrene conversion) of the polystyrene is 30,000 to 250,000. The flame-retardant resin composition as described.
The weight average molecular weight (polystyrene conversion) of the polyphenylene ether is 30,000 to 70,000, and the weight average molecular weight (polystyrene conversion) of the polystyrene is 30,000 to 250,000. The flame-retardant resin composition as described.
2. The flame retardant according to claim 1, wherein the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is polystyrene and / or an acrylonitrile-styrene copolymer having a sulfonic acid group and / or a sulfonic acid group introduced therein. Resin composition.
The flame retardant according to claim 2, wherein the flame retardant having a sulfonic acid group and / or a sulfonic acid group introduced therein is polystyrene and / or acrylonitrile-styrene copolymer having a sulfonic acid group and / or a sulfonic acid group introduced therein. Resin composition.
The flame retardant resin composition according to claim 1, wherein the flame retardant having the sulfonic acid group and / or sulfonic acid group introduced therein forms a counter ion with an alkali metal and / or alkaline earth metal.
The flame retardant resin composition according to claim 2, wherein the flame retardant introduced with the sulfonic acid group and / or sulfonic acid group forms a counter ion with an alkali metal and / or an alkaline earth metal.
The flame retardant resin composition according to claim 11, wherein the alkali metal is sodium or potassium.
The flame retardant resin composition according to claim 12, wherein the alkali metal is sodium or potassium.
A flame-retardant resin molded article having a thickness of 0.6 to 3.0 mm, using the flame-retardant resin composition according to claim 1.
A flame-retardant resin molded article having a thickness of 0.6 to 3.0 mm, using the flame-retardant resin composition according to claim 2.
An image display device, a battery adapter, a wearable terminal or a copier using the flame-retardant resin molded product having a thickness of 0.6 to 3.0 mm according to claim 15 as a casing material.
An image display device, a battery adapter, a wearable terminal, or a copier using the flame-retardant resin molded product having a thickness of 0.6 to 3.0 mm according to claim 16 as a casing material.