JPH07118481A - Flame-retardant styrene-based resin composition - Google Patents

Flame-retardant styrene-based resin composition

Info

Publication number
JPH07118481A
JPH07118481A JP26906093A JP26906093A JPH07118481A JP H07118481 A JPH07118481 A JP H07118481A JP 26906093 A JP26906093 A JP 26906093A JP 26906093 A JP26906093 A JP 26906093A JP H07118481 A JPH07118481 A JP H07118481A
Authority
JP
Japan
Prior art keywords
styrene
rubber
resin composition
weight
flame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP26906093A
Other languages
Japanese (ja)
Inventor
Jun Yonezawa
順 米沢
Hiroaki Ishikawa
弘昭 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP26906093A priority Critical patent/JPH07118481A/en
Publication of JPH07118481A publication Critical patent/JPH07118481A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To provide the subject resin composition which is a flame retardant- resin composition having high flame retardancy, high impact resistance and high heat resistance in combination and suitable for a molding constituting a business machine or an electrical appliance component. CONSTITUTION:This flame-retardant styrene-based resin composition is composed of (A) 100 pts.wt. rubber-modified styrene-based resin synthesized by copolymerizing a ring-substituted brominated styrene monomer and a styrenic monomer and containing bromine derived from the ring-substituted brominated styrene monomer in an amount of 1 to 18wt.% based on the rubber-modified styrene-based resin, (B) 1 to 19 pts.wt. polyphenylene ether having 0.4 to 0.6dl/g reduced viscosity (0.5g/dl chloroform solution: measured at 30 deg.C) and (C) 0 to 7 pts.wt. antimony oxide.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は難燃性に優れた樹脂組成
物に関する。更に詳しくは、難燃性、耐熱性、強度に優
れる難燃スチレン系樹脂組成物に関する。
FIELD OF THE INVENTION The present invention relates to a resin composition having excellent flame retardancy. More specifically, it relates to a flame-retardant styrene resin composition having excellent flame resistance, heat resistance and strength.

【0002】[0002]

【従来の技術】HIPSに代表されるゴム変性スチレン
樹脂は、成形性、寸法安定性に加え、耐衝撃性にすぐれ
ていることから、家電機器、OA機器を始め多岐にわた
り使用されている。近年これらの分野において、難燃性
に対する要望が高い。易燃性の上記樹脂に難燃性を付与
する方法として、ごく一般的には難燃効果の高い臭素化
合物などのハロゲン化合物、及び必要に応じ酸化アンチ
モンを樹脂に添加する方法が採用されているが、難燃剤
の添加による方法は優れた難燃性が得られるものの、衝
撃強度や耐熱性が低下し、場合によっては難燃剤が樹脂
の成形品表面にブリードアウトして成形品外観を悪化さ
せるなどの問題を有していた。上記問題点を解決する方
法としては、難燃効果をもたらす核置換臭素化スチレン
単量体をゴム変性スチレン系樹脂を構成するスチレン系
単量体と共重合した組成物(特開平4−7347号公
報)があるが、このゴム変性スチレン系樹脂のみでは、
充分な難燃性を付与するためには、多量の核置換臭素化
単量体を必要とした。また、ポリフェニレンエーテル、
ハイインパクトポリスチレン、ブロム化ポリスチレンあ
るいはブロム化ポリスチレンオリゴマー、酸化アンチモ
ンよりなる樹脂組成物(国際出願番号:WO87/05
615)が提案されているが、ブロム化ポリスチレンを
混合する方法は、ブロム化スチレンをスチレンと共重合
する場合に比べ、強度流動性バランスに問題があった。
2. Description of the Related Art Rubber-modified styrene resins represented by HIPS are widely used in household appliances, office automation equipment and the like because they have excellent impact resistance in addition to moldability and dimensional stability. In recent years, there has been a great demand for flame retardancy in these fields. As a method of imparting flame retardancy to the above flammable resin, a method of adding a halogen compound such as a bromine compound having a high flame retarding effect, and optionally adding antimony oxide to the resin is generally adopted. However, although the method by adding a flame retardant can obtain excellent flame retardancy, impact strength and heat resistance decrease, and in some cases the flame retardant bleeds out on the surface of the resin molded product and deteriorates the appearance of the molded product. Had problems such as. As a method for solving the above-mentioned problems, a composition obtained by copolymerizing a nuclear-substituted brominated styrene monomer that produces a flame-retardant effect with a styrene-based monomer that constitutes a rubber-modified styrene-based resin (JP-A-4-7347). Gazette), but with this rubber-modified styrene resin alone,
A large amount of nuclear-substituted brominated monomer was required to provide sufficient flame retardancy. Also, polyphenylene ether,
Resin composition comprising high-impact polystyrene, brominated polystyrene or brominated polystyrene oligomer, and antimony oxide (International application number: WO87 / 05
615) has been proposed, but the method of mixing brominated polystyrene has a problem in strength fluidity balance as compared with the case of copolymerizing brominated styrene with styrene.

【0003】[0003]

【発明が解決しようとする課題】従来の樹脂組成物は難
燃性、耐熱性、強度、流動性のバランスに必ずしも満足
のいくものではなかった。本発明は上記バランスに優れ
た難燃性スチレン系樹脂組成物を提供するものである。
The conventional resin compositions are not always satisfactory in the balance of flame retardancy, heat resistance, strength and fluidity. The present invention provides a flame-retardant styrene resin composition having an excellent balance.

【0004】[0004]

【課題を解決するための手段】本発明者らは核置換臭素
化スチレン単量体を成分として含有するゴム変性スチレ
ン系樹脂、特定の分子量を持つポリフェニレンエーテ
ル、及び必要に応じて酸化アンチモンを特定の比率で有
する樹脂組成物が上記課題を効果的に解決することを見
いだし本発明を完成するに至った。
The present inventors have specified a rubber-modified styrenic resin containing a nucleus-substituted brominated styrene monomer as a component, a polyphenylene ether having a specific molecular weight, and, if necessary, antimony oxide. It was found that the resin composition having the ratio of 1) effectively solves the above problems, and has completed the present invention.

【0005】すなわち、本発明は、(A)核置換臭素化
スチレン単量体がスチレン系単量体と共重合してなるゴ
ム変性スチレン系樹脂であって、核置換臭素化スチレン
単量体に由来する臭素量が、該ゴム変性スチレン系樹脂
の1〜18重量%であるゴム変性スチレン系樹脂100
重量部、(B)還元粘度(0.5g/dlクロロホルム
溶液:30℃測定)が0.4〜0.6dl/gであるポ
リフェニレンエーテル1〜19重量部および(C)酸化
アンチモン0〜7重量部からなることを特徴とする難燃
スチレン系樹脂組成物である。
That is, the present invention provides a rubber-modified styrenic resin (A) obtained by copolymerizing a nucleus-substituted brominated styrene monomer with a styrene-based monomer, A rubber-modified styrene-based resin 100 having an amount of bromine derived from 1 to 18% by weight of the rubber-modified styrene-based resin.
Parts by weight, (B) 1 to 19 parts by weight of polyphenylene ether having a reduced viscosity (0.5 g / dl chloroform solution: measured at 30 ° C.) of 0.4 to 0.6 dl / g, and (C) 0 to 7 parts by weight of antimony oxide. It is a flame-retardant styrene-based resin composition characterized by comprising parts.

【0006】(A)成分のゴム変性スチレン系樹脂とし
ては、マトリックスを構成するスチレン系重合体は核置
換臭素化スチレン単量体とその他のスチレン系単量体と
の共重合体である。その製造方法としては、ゴム状重合
体を溶解した核置換臭素化スチレン単量体を含むスチレ
ン系単量体混合物を、せん断力の存在下に塊状、塊状・
懸濁、溶液重合等でグラフト重合し、脱揮発分装置によ
り架橋することにより得ることが出来る。
As the rubber-modified styrene resin as the component (A), the styrene polymer constituting the matrix is a copolymer of a nucleus-substituted brominated styrene monomer and another styrene monomer. As the production method thereof, a styrene-based monomer mixture containing a nucleus-substituted brominated styrene monomer in which a rubber-like polymer is dissolved is lumped in the presence of shearing force, lump-shaped.
It can be obtained by graft polymerization by suspension, solution polymerization or the like, and crosslinking by a devolatilization device.

【0007】ここで、グラフト重合可能な前記スチレン
系重合体を構成する単量体混合物中の核置換臭素化スチ
レン単量体としては、o- ブロモスチレン、m- ブロモ
スチレン、p- ブロモスチレン、2,4-ジブロモスチレ
ン、2,5-ジブロモスチレン、3,4-ジブロモスチレン、2,
4,5-トリブロモスチレンなどが挙げられる。目的とする
難燃性に応じてそれらを単独、あるいは混合物として用
いることができる。
Here, as the nucleus-substituted brominated styrene monomer in the monomer mixture constituting the above-mentioned graft-polymerizable styrene-based polymer, o-bromostyrene, m-bromostyrene, p-bromostyrene, 2,4-dibromostyrene, 2,5-dibromostyrene, 3,4-dibromostyrene, 2,
Examples include 4,5-tribromostyrene. They can be used alone or as a mixture depending on the desired flame retardancy.

【0008】その他のスチレン系単量体としては、スチ
レンのほか、o−メチルスチレン、m−メチルスチレ
ン、p−メチルスチレン、2,4−ジメチルスチレン、
エチルスチレン、p−tert−ブチルスチレンなどの
核アルキル置換スチレン、α−メチルスチレン、α−メ
チル−p−メチルスチレンなどのα−アルキル置換スチ
レンなどであるが、代表的なものは、スチレンの単独も
しくはその一部をスチレン以外の上記スチレン系単量体
で置き換えた単量体混合物である。
Other styrene-based monomers include styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 2,4-dimethylstyrene,
Nuclear alkyl-substituted styrenes such as ethyl styrene and p-tert-butyl styrene, α-alkyl substituted styrenes such as α-methyl styrene and α-methyl-p-methyl styrene, and the like, but typical ones are styrene alone. Alternatively, it is a monomer mixture in which a part of the styrene-based monomer other than styrene is replaced.

【0009】ゴム変性スチレン系樹脂中の臭素の含量
は、1〜18重量%であることが必要であり、5〜15
重量%であることが好ましい。臭素含量が1重量%未満
では、樹脂組成物の難燃性が不十分であり、18重量%
を越えると流動性に劣り好ましくない。また、ゴム状重
合体としては、ポリブタジエンゴム、スチレン−ブタジ
エンゴム(SBR)、アクリロニトリル−ブタジエンゴ
ム(NBR)などを挙げられる。また、ポリブタジエン
ゴムとしてはハイシスポリブタジエンゴム、ローシスポ
リブタジエンゴム、及びその部分水添物も好適に用いる
ことができる。なお上記SBR、NBRとしては、ガラ
ス転移温度が−30℃以下のものが好ましい。
The content of bromine in the rubber-modified styrenic resin must be 1 to 18% by weight,
It is preferably in the weight%. If the bromine content is less than 1% by weight, the flame retardancy of the resin composition is insufficient,
If it exceeds, fluidity is poor and it is not preferable. Examples of the rubbery polymer include polybutadiene rubber, styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR) and the like. Further, as the polybutadiene rubber, high cis polybutadiene rubber, low cis polybutadiene rubber, and partially hydrogenated products thereof can also be preferably used. The SBR and NBR preferably have a glass transition temperature of -30 ° C or lower.

【0010】ゴム変性スチレン系樹脂におけるゴム状重
合体の割合は3〜30wt%の範囲にあることが、樹脂
組成物の衝撃強度と剛性のバランスの上から好ましい。
分散しているゴム状重合体の重量平均粒子径は、衝撃強
度および光沢の点から0.1μm〜5.0μmの範囲に
あることが好ましく、2峰分布性のものであっても良
い。また、分散粒子の架橋度の目安となるトルエンに対
する膨潤指数は6〜14の範囲に調整される。
The ratio of the rubber-like polymer in the rubber-modified styrene resin is preferably in the range of 3 to 30 wt% from the viewpoint of the balance between impact strength and rigidity of the resin composition.
The weight average particle diameter of the dispersed rubber-like polymer is preferably in the range of 0.1 μm to 5.0 μm from the viewpoint of impact strength and gloss, and may be bimodal. Further, the swelling index for toluene, which is a measure of the degree of crosslinking of the dispersed particles, is adjusted within the range of 6 to 14.

【0011】(A)成分のマトリックスを構成する樹脂
の還元粘度(0.5g/dl トルエン溶液 30℃測
定)は、好ましくは0.1〜1.5dl/gであり、さ
らに好ましくは0.3〜1.0dl/gである。還元粘
度が0.1未満であると衝撃強度が著しく劣り、1.5
を越えると流動性が低下する。上記重量平均粒子径、膨
潤指数、還元粘度の調整方法は当業者には周知の事柄に
属すのでその詳細は省略する。
The reduced viscosity (0.5 g / dl toluene solution measured at 30 ° C.) of the resin constituting the matrix of the component (A) is preferably 0.1 to 1.5 dl / g, more preferably 0.3. ~ 1.0 dl / g. If the reduced viscosity is less than 0.1, the impact strength is extremely poor, and
If it exceeds, the fluidity decreases. The methods for adjusting the weight average particle diameter, swelling index, and reduced viscosity are well known to those skilled in the art, and thus their details are omitted.

【0012】(B)成分のポリフェニレンエーテルの具
体的な例としては、ポリ(2,6−ジメチル−1,4−
フェニレンエーテル)、2,6−ジメチルフェノールと
2,3,6,−トリメチルフェノールとの共重合体等で
あり、ポリ(2,6−ジメチル−1,4−フェニレンエ
ーテル)が好ましい。ポリフェニレンエーテルの製造方
法としては、例えば、米国特許第3306874号明細
書に記載されている第一銅塩とアミンのコンプレックス
を触媒として用い、例えば2,6キシレノールを酸化重
合するという方法により製造できる。そのほかにも米国
特許第3306875号明細書、米国特許第32573
57号明細書、米国特許第3257328号明細書、及
び特公昭52−1780号公報、特開昭50−5119
7号公報に記載された方法で製造できる。必要とする分
子量のポリフェニレンエーテルを得るための手段として
はポリフェニレンエーテルの製造の際の触媒量、重合条
件の調整などを上げることができる。
Specific examples of the polyphenylene ether as the component (B) include poly (2,6-dimethyl-1,4-).
Phenylene ether), a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol, and the like, and poly (2,6-dimethyl-1,4-phenylene ether) is preferable. The polyphenylene ether can be produced, for example, by the method described in U.S. Pat. No. 3,306,874, which uses a complex of a cuprous salt and an amine as a catalyst and oxidatively polymerizes 2,6-xylenol, for example. Besides, US Pat. No. 3,306,875, US Pat.
57, U.S. Pat. No. 3,257,328, Japanese Patent Publication No. 52-1780, and Japanese Patent Laid-Open No. 5-5119.
It can be produced by the method described in Japanese Patent Publication No. As a means for obtaining a polyphenylene ether having a required molecular weight, the amount of catalyst during the production of polyphenylene ether, adjustment of polymerization conditions and the like can be increased.

【0013】(C)成分の酸化アンチモンとしては、三
酸化アンチモン、五酸化アンチモンなどをあげることが
でき、なかでも三酸化アンチモンが好ましい。次に本発
明の樹脂組成物において、(B)成分の割合は、(A)
成分100重量部に対して1〜19重量部がであり、5
〜15重量部であることが好ましい。1重量部未満では
難燃性が不十分であり、19重量部を越えると樹脂組成
物の流動性に劣る。また、還元粘度(0.5g/dl、
クロロホルム溶液、30℃測定)は、0.40〜0.6
0dl/gの範囲にあり、0.45〜0.59dl/g
の範囲にあることが好ましい。還元粘度が0.4未満で
あると衝撃強度の低下、燃焼時の滴下が起こり好ましく
はなく、0.6を超えると流動性に劣る。
Examples of the antimony oxide as the component (C) include antimony trioxide and antimony pentoxide, among which antimony trioxide is preferable. Next, in the resin composition of the present invention, the ratio of the component (B) is (A)
1 to 19 parts by weight based on 100 parts by weight of the component, and 5
It is preferably ˜15 parts by weight. If it is less than 1 part by weight, the flame retardancy is insufficient, and if it exceeds 19 parts by weight, the fluidity of the resin composition is poor. Also, the reduced viscosity (0.5 g / dl,
Chloroform solution, measured at 30 ° C) is 0.40 to 0.6
In the range of 0 dl / g, 0.45-0.59 dl / g
It is preferably in the range of. When the reduced viscosity is less than 0.4, impact strength is lowered and dropping during combustion is not preferable, and when it exceeds 0.6, the fluidity is poor.

【0014】なお、(B)成分は、炭化残渣をふやすも
のがよく、このことが難燃性に寄与すると考えられる。
(C)成分の割合は(A)成分100重量部にたいして
0〜7重量部である。難燃助剤の三酸化アンチモンは例
えばUL94の燃焼クラスによって添加量が異なるが経
済的な面からは1〜5重量部が好ましい。三酸化アンチ
モンが7重量部を越えると樹脂組成物の衝撃強度が低下
し好ましくない。
The component (B) is preferably one that brushes the carbonization residue, which is considered to contribute to flame retardancy.
The ratio of the component (C) is 0 to 7 parts by weight based on 100 parts by weight of the component (A). The addition amount of antimony trioxide, which is a flame retardant aid, varies depending on the combustion class of UL94, for example, but from the economical aspect, 1 to 5 parts by weight is preferable. If the amount of antimony trioxide exceeds 7 parts by weight, the impact strength of the resin composition decreases, which is not preferable.

【0015】本発明の樹脂組成物は、上記各成分を溶融
混合することにより得ることができる。溶融混合の方法
としては、バンバリーミキサー、単軸押出機、2軸押出
機、などの混練装置により溶融混合すればよい。また、
本発明のゴム変性スチレン系樹脂組成物には、有機ポリ
シロキサン類、高級脂肪酸及びその金属塩、高級脂肪酸
のアミド類を添加することにより衝撃強度を一段と高め
ることが出来る。また本発明の樹脂組成物には、染顔
料、滑剤、充填剤、離型剤、可塑剤、帯電防止剤、酸化
防止剤、紫外線吸収剤、熱安定剤、などの添加剤を必要
に応じて添加することが出来る。
The resin composition of the present invention can be obtained by melt mixing the above components. As a method of melt mixing, melt mixing may be performed using a kneading device such as a Banbury mixer, a single screw extruder, a twin screw extruder, or the like. Also,
Impact strength can be further enhanced by adding organic polysiloxanes, higher fatty acids and metal salts thereof, and amides of higher fatty acids to the rubber-modified styrene resin composition of the present invention. In addition, the resin composition of the present invention may contain additives such as dyes and pigments, lubricants, fillers, release agents, plasticizers, antistatic agents, antioxidants, ultraviolet absorbers, heat stabilizers, etc., if necessary. It can be added.

【0016】以下実施例により本発明を具体的に説明す
る。
The present invention will be specifically described with reference to the following examples.

【0017】[0017]

【実施例】【Example】

[参考例1−ゴム変性スチレン系樹脂H1〜H4の調
整]ポリブタジエンゴム(日本ゼオン株式会社製、ニポ
ール1220SL)をスチレン、ジブロモスチレンに溶
解し、次いでエチルベンゼン及び、1,1−ビス(t−
ブチルパーオキシ)3,3,5−トリメチルシクロヘキ
サンの少量を加え、最終的な組成(単位は重量部数)
が、ポリブタジエンゴム8.6、スチレン64.1、エ
チルベンゼン13.0、ジブロモスチレン14.3、
1,1−ビス(t−ブチルパーオキシ)3,3,5−ト
リメチルシクロヘキサン0.01より成る重合原液を調
整した。
[Reference Example 1-Preparation of rubber-modified styrenic resins H1 to H4] Polybutadiene rubber (Nihon Zeon Co., Ltd., Nipol 1220SL) is dissolved in styrene and dibromostyrene, and then ethylbenzene and 1,1-bis (t-
Butyl peroxy) 3,3,5-trimethylcyclohexane added in small amount, final composition (unit is parts by weight)
, Polybutadiene rubber 8.6, styrene 64.1, ethylbenzene 13.0, dibromostyrene 14.3,
A polymerization stock solution consisting of 0.01 of 1,1-bis (t-butylperoxy) 3,3,5-trimethylcyclohexane was prepared.

【0018】上記の重合原液を、各々の内容積が6.2
リットルの撹拌機付きの3槽式反応機に連続的に送液し
た。第一槽反応機出口の固形分濃度が30重量%となる
ように反応機内温度を制御した。最終槽反応機出口の固
形分濃度が80重量%となるように反応機内温度を調整
した。次いで230℃、真空下の脱揮装置に送り込み、
未反応のモノマー及びエチルベンゼンを除去し、押出機
にて造粒しペレット状のゴム変性スチレン系樹脂、H1
を得た。ゴム変性スチレン系樹脂中のゴム含量は、1
0.8重量%、ゲル含量は30重量%、臭素含量は8.
8重量%、還元粘度0.62dl/g、分散相の平均粒
子径は2.2ミクロン、トルエンに対する膨潤指数は
9.8であった。また、重合原液中のジブロモスチレン
とスチレンの量、重合温度を調整し、ゴム含量10.0
重量%、ゲル含量28重量%、イオンクロマト分析法に
より求めた臭素含量11.4重量%、還元粘度0.63
dl/g、分散相の平均粒子径2.2ミクロン、トルエ
ンに対する膨潤指数9.8のゴム変性スチレン系樹脂H
2、ゴム含量10.5重量%、ゲル含量29重量%、臭
素含量0.0重量%、還元粘度0.69dl/g、分散
相の平均粒子径2.3ミクロン、トルエンに対する膨潤
指数9.7のゴム変性スチレン系樹脂H3、ゴム含量1
0.7重量%、ゲル含量30重量%、臭素含量19.0
重量%、還元粘度0.62dl/g、分散相の平均粒子
径2.1ミクロン、トルエンに対する膨潤指数9.7の
ゴム変性スチレン系樹脂H4を得た。特性を表1に示
す。 [参考例2−ポリフェニレンエーテルP1〜P3の調
整]酸素吹き込み口を反応機底部に有し、内部に冷却用
コイル、撹はん羽を有するステンレス製反応機の内部を
窒素で十分置換したのち、臭化第二銅54.8g、ジ−
n−ブチルアミン1110g、及びトルエン20リット
ル、n−ブタノール16リットル、メタノール4リット
ルの混合溶媒に2,6キシレノール8.75Kgを溶解
して反応機に仕込んだ。撹はんしながら反応機内部に酸
素を吹き込み続け、内温を30℃に制御しながら重合を
行った。重合終了後、析出したポリマーを濾別しメタノ
ール、塩酸混合液を添加し、ポリマー中の残存触媒を分
解し、さらにメタノールを用いて十分洗浄した後乾燥
し、粉末状のポリフェニレンエーテルP1を得た。還元
粘度は0.55dl/gであった。また、重合温度、時
間を調整し、還元粘度0.70dl/gのポリフェニレ
ンエーテルP2および0.38dl/gのポリフェニレ
ンエーテルP3を得た。特性を表1に示す。
Each of the above-mentioned polymerization stock solutions had an internal volume of 6.2.
The liquid was continuously fed to a 3-tank type reactor equipped with a stirrer. The temperature inside the reactor was controlled so that the solid content concentration at the outlet of the first tank reactor was 30% by weight. The temperature inside the reactor was adjusted so that the solid content concentration at the outlet of the final tank reactor was 80% by weight. Then send it to a devolatilizer under vacuum at 230 ° C,
Unreacted monomer and ethylbenzene are removed, pelletized with extruder, rubber-modified styrene resin, H1
Got The rubber content in the rubber-modified styrene resin is 1
0.8% by weight, gel content 30% by weight, bromine content 8.
8% by weight, reduced viscosity 0.62 dl / g, average particle size of dispersed phase was 2.2 microns, and swelling index in toluene was 9.8. In addition, the amount of dibromostyrene and styrene in the undiluted polymerization solution and the polymerization temperature are adjusted to adjust the rubber content to 10.0.
% By weight, gel content 28% by weight, bromine content 11.4% by weight determined by ion chromatography, reduced viscosity 0.63
dl / g, average particle diameter of dispersed phase 2.2 microns, rubber-modified styrene resin H with swelling index 9.8 in toluene
2, rubber content 10.5% by weight, gel content 29% by weight, bromine content 0.0% by weight, reduced viscosity 0.69 dl / g, average particle size of dispersed phase 2.3 microns, swelling index 9.7 in toluene. Rubber modified styrenic resin H3, rubber content 1
0.7% by weight, gel content 30% by weight, bromine content 19.0
A rubber-modified styrene resin H4 having a weight%, a reduced viscosity of 0.62 dl / g, an average particle size of the dispersed phase of 2.1 μm and a swelling index of 9.7 with respect to toluene was obtained. The characteristics are shown in Table 1. [Reference Example 2-Preparation of polyphenylene ethers P1 to P3] After fully replacing the inside of a stainless steel reactor having an oxygen blowing port at the bottom of the reactor with a cooling coil and stirring blades with nitrogen, Cupric bromide 54.8 g, di-
8.75 kg of 2,6-xylenol was dissolved in a mixed solvent of 1110 g of n-butylamine, 20 liters of toluene, 16 liters of n-butanol, and 4 liters of methanol, and charged into a reactor. Oxygen was continuously blown into the reactor while stirring, and polymerization was performed while controlling the internal temperature to 30 ° C. After the completion of the polymerization, the precipitated polymer was separated by filtration, a mixed solution of methanol and hydrochloric acid was added to decompose the residual catalyst in the polymer, and the polymer was thoroughly washed with methanol and dried to obtain powdery polyphenylene ether P1. . The reduced viscosity was 0.55 dl / g. Further, the polymerization temperature and time were adjusted to obtain polyphenylene ether P2 having a reduced viscosity of 0.70 dl / g and polyphenylene ether P3 having a 0.38 dl / g. The characteristics are shown in Table 1.

【0019】[0019]

【表1】 [Table 1]

【0020】実施例で用いた測定について説明する。難
燃性は、UL−94に準拠(VB法1/8”試験片)
し、アイゾット衝撃強度は、ASTM D256に準拠
し、メルトフローレート(g/10min)は、ISO
−R1133に準拠し、ビカット軟化点(℃)は、AS
TM D1525に準拠して測定した。
The measurement used in the examples will be described. Flame retardance conforms to UL-94 (VB method 1/8 "test piece)
However, the Izod impact strength complies with ASTM D256, and the melt flow rate (g / 10 min) is ISO
-Based on R1133, the Vicat softening point (° C) is AS
It was measured according to TM D1525.

【0021】[0021]

【実施例1〜2、比較例1〜7】参考例1で得たゴム変
性スチレン系樹脂H1〜H4、参考例2で得たポリフェ
ニレンエーテルP1〜P3と三酸化アンチモンを表2、
3に示す比率にて配合し、押出機にて溶融・混練し、難
燃スチレン系樹脂組成物のペレットを得た。次いで得ら
れた難燃スチレン系樹脂組成物のペレットより射出成形
機にて、220℃の成形温度にて試験片を作成し物性を
測定した。結果を表2、3に示す。
Examples 1 and 2, Comparative Examples 1 to 7 The rubber-modified styrene resins H1 to H4 obtained in Reference Example 1, the polyphenylene ethers P1 to P3 obtained in Reference Example 2 and antimony trioxide are shown in Table 2,
The mixture was blended in the ratio shown in 3 and melted and kneaded with an extruder to obtain pellets of a flame-retardant styrene resin composition. Then, a test piece was prepared from the obtained pellet of the flame-retardant styrene resin composition with an injection molding machine at a molding temperature of 220 ° C., and the physical properties were measured. The results are shown in Tables 2 and 3.

【0022】[0022]

【表2】 [Table 2]

【0023】[0023]

【表3】 [Table 3]

【0024】[0024]

【発明の効果】本発明の樹脂組成物は、高度な難燃性、
耐衝撃性、耐熱性を合わせ持った難燃樹脂組成物であ
り、事務機器、家電機器部品となる成形品を与える実用
上優れた材料であり、産業上極めて有用なものである。
The resin composition of the present invention has a high flame retardance,
It is a flame-retardant resin composition that has both impact resistance and heat resistance, is a practically excellent material that gives molded products that become parts for office equipment and home appliances, and is extremely useful industrially.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 (A)核置換臭素化スチレン単量体がス
チレン系単量体と共重合してなるゴム変性スチレン系樹
脂であって、核置換臭素化スチレン単量体に由来する臭
素量が、該ゴム変性スチレン系樹脂の1〜18重量%で
あるゴム変性スチレン系樹脂100重量部、(B)還元
粘度(0.5g/dlクロロホルム溶液:30℃測定)
が0.4〜0.6dl/gであるポリフェニレンエーテ
ル1〜19重量部および(C)酸化アンチモン0〜7重
量部からなることを特徴とする難燃スチレン系樹脂組成
1. A rubber-modified styrene resin obtained by copolymerizing (A) a nucleus-substituted brominated styrene monomer with a styrene monomer, wherein the amount of bromine derived from the nucleus-substituted brominated styrene monomer. Is 100 parts by weight of the rubber-modified styrene resin, which is 1 to 18% by weight of the rubber-modified styrene resin, and (B) reduced viscosity (0.5 g / dl chloroform solution: measured at 30 ° C.).
Flame-retardant styrene-based resin composition, characterized in that it comprises 1 to 19 parts by weight of polyphenylene ether having 0.4 to 0.6 dl / g and 0 to 7 parts by weight of (C) antimony oxide.
JP26906093A 1993-10-27 1993-10-27 Flame-retardant styrene-based resin composition Withdrawn JPH07118481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26906093A JPH07118481A (en) 1993-10-27 1993-10-27 Flame-retardant styrene-based resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26906093A JPH07118481A (en) 1993-10-27 1993-10-27 Flame-retardant styrene-based resin composition

Publications (1)

Publication Number Publication Date
JPH07118481A true JPH07118481A (en) 1995-05-09

Family

ID=17467104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26906093A Withdrawn JPH07118481A (en) 1993-10-27 1993-10-27 Flame-retardant styrene-based resin composition

Country Status (1)

Country Link
JP (1) JPH07118481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020117010A (en) * 2019-01-22 2020-08-06 株式会社Fts Saddle type resin fuel tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020117010A (en) * 2019-01-22 2020-08-06 株式会社Fts Saddle type resin fuel tank

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