WO2010125894A1 - 難燃性発泡スチレン系樹脂組成物 - Google Patents
難燃性発泡スチレン系樹脂組成物 Download PDFInfo
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- WO2010125894A1 WO2010125894A1 PCT/JP2010/056054 JP2010056054W WO2010125894A1 WO 2010125894 A1 WO2010125894 A1 WO 2010125894A1 JP 2010056054 W JP2010056054 W JP 2010056054W WO 2010125894 A1 WO2010125894 A1 WO 2010125894A1
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- WIPO (PCT)
- Prior art keywords
- bromine
- weight
- flame retardant
- styrene resin
- resin composition
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0019—Use of organic additives halogenated
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0066—Flame-proofing or flame-retarding additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/02—Halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/06—Organic materials
- C09K21/08—Organic materials containing halogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/03—Extrusion of the foamable blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/136—Phenols containing halogens
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08L33/16—Homopolymers or copolymers of esters containing halogen atoms
Definitions
- the present invention relates to a flame retardant foamed styrene resin composition and a foamed molded product thereof.
- styrene resin foam Since styrene resin foam is lightweight, it is used in various fields such as heat insulation applications such as home appliances and building materials, and civil engineering applications such as embankment methods.
- JP-A-2005-139356 uses tetrabromobisphenol A-bis (2-methylallyl ether) or tetrabromobisphenol A-bis (2,3-dibromo-2-methylpropyl ether) as a flame retardant. Describes that a styrene resin foam excellent in recyclability can be obtained. However, it has been found that these styrenic resin foams do not have sufficient thermal stability.
- the present invention has been made in view of the above problems, and an object thereof is to provide a foamed styrene resin composition which is excellent in flame retardancy and thermal stability and suitable for recycling.
- the present invention includes a styrene-based resin, a bromine-containing flame retardant, and a foaming agent.
- the bromine-containing flame retardant is (a) a bromine-containing organic compound having a 2,3-dibromopropyl group or all bromine atoms bonded to a benzene ring.
- a flame retardant foamed styrene resin composition characterized by containing 0.5 to 10 parts by weight of a flame retardant.
- the styrene resin of the present invention includes, for example, a styrene homopolymer, styrene, o-methyl styrene, m-methyl styrene, p-methyl styrene, 2,4-dimethyl styrene, ethyl styrene, pt-butyl styrene.
- rubber-like polymers include polybutadiene, polyisoprene, styrene-butadiene copolymer, styrene-isoprene copolymer, acrylonitrile-butadiene copolymer, styrene-isobutylene-butadiene copolymer, and butadiene- (meth) acryl.
- Acid ester copolymer styrene-butadiene block copolymer, styrene-isoprene block copolymer, butyl rubber, ethylene- ⁇ -olefin copolymer (ethylene-propylene rubber), ethylene- ⁇ -olefin-polyene copolymer (Ethylene-propylene-diene rubber), silicone rubber, acrylic rubber, hydrogenated diene rubber (hydrogenated styrene- Butadiene block copolymer, hydrogenated butadiene polymer, etc.). These rubbery polymers can be used alone or in admixture of two or more. The amount used is preferably 30% by weight or less, more preferably 20% by weight or less in the monomer component.
- bromine-containing compound (a) having a 2,3-dibromopropyl group examples include tetrabromobisphenol A-bis (2,3-dibromopropyl ether) and tetrabromobisphenol S-bis (2,3-dibromopropyl ether). , Tetrabromobisphenol F-bis (2,3-dibromopropyl ether), tris (2,3-dibromopropyl) isocyanurate and tris (2,3-dibromopropyl) cyanurate.
- Bromine-containing organic compounds having a bromine content of 60% by weight or more in which all bromine atoms are bonded to the benzene ring are, for example, tetrabromobisphenol, A hexabromobenzene, pentabromotoluene, polybromodiphenyl ether, polybromodiphenylethane, bispolybromo. Phenoxyethane, trispolybromophenoxytriazine, polybromophenylindane, polypentabromobenzyl acrylate, ethylenebistetrabromophthalimide.
- Brominated organic compounds having a 2,3-dibromo-2-alkylpropyl group include, for example, tetrabromobisphenol A-bis (2,3-dibromo-2-methylpropyl ether), tetrabromobisphenol S-bis (2,3 -Dibromo-2-methylpropyl ether), tetrabromobisphenol F-bis (2,3-dibromo-2-methylpropyl ether).
- a heat stabilizer can be further blended in the flame retardant styrene resin foam composition of the present invention.
- the heat stability can be further improved.
- heat stabilizers include phosphite compounds, thioether compounds, and hindered phenol compounds.
- phosphite compound examples include tris (2,4-di-t-butylphenyl) phosphite, bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite, bis [2,4-bis (1,1-dimethylethyl) -6-methylphenyl] ethyl ester phosphorous acid, tetrakis (2,4-di-t-butylphenyl) [1,1-biphenyl] -4,4′-diylbisphospho Knight, bis (nonylphenyl) pentaerythritol diphosphite, bisstearyl pentaerythritol diphosphite, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite, 2,2'-methylenebis (4,6-di-t-butyl-1-phenyl
- hindered phenol compound examples include 1,6-hexanediol-bis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], triethylene glycol-bis [3- (3- t-butyl-5-methyl-4-hydroxyphenyl) propionate], glycerol tris [3- (3,5-di-t-butyl-4-hydroxyphenyl) -propionate], pentaerythritol tetrakis [3- (3 5-di-t-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, thiodiethylenebis [3- (3,5-di -T-butyl-4-hydroxyphenyl) propionate], N, N′-hexane-1,6-diylbis [ 3- (3,5-di-t-butyl)
- the addition amount is preferably 0.01 to 0.5 parts by weight per 100 parts by weight of the styrenic resin.
- a flame retardant aid can be further blended into the flame retardant styrene resin foam composition of the present invention.
- the flame retardant aid include antimony trioxide, antimony pentoxide, zinc borate, hydrated aluminum oxide, molybdenum oxide and the like.
- the addition amount is preferably 0.01 to 5 parts by weight per 100 parts by weight of the styrene resin.
- the flame retardant foamed styrene resin composition of the present invention can be formed into a foamed molded article by an extrusion foaming method or a bead foaming method.
- the extrusion foaming method it is foam-molded by melt-mixing a brominated flame retardant and other additives with a styrene resin in an extruder, press-fitting the foaming agent, and then extruding it from the extruder die into the atmosphere.
- styrene resin beads obtained by suspension polymerization are impregnated with an emulsified dispersion of bromine flame retardant and other additives excluding the foaming agent, and then the foaming agent is injected in an autoclave.
- the beads obtained by impregnation and separation of water are pre-foamed with water vapor at 100 ° C., and then molded by heating and foaming with high-temperature pressurized steam in a mold.
- the flame-retardant foamed styrenic resin composition of the present invention includes a bromine-containing organic compound other than (a) and (b), a phosphate ester, a silicone compound, and a hydrated metal within the range not impairing the effects of the present invention. You may use a compound etc. together.
- the flame retardant foamed styrene resin composition of the present invention includes a light stabilizer, an ultraviolet absorber, an ultraviolet stabilizer, a heavy metal deactivator, and an impact modifier within a range not impairing the effects of the present invention.
- known resin additives such as colorants, lubricants, anti-dripping agents, crystal nucleating agents, antistatic agents, and compatibilizing agents can be blended.
- a styrene resin composition was obtained.
- a predetermined amount of foaming agent is press-fitted in a separate line at the tip of the 65 mm extruder (opposite to the die of the 90 mm diameter extruder), and the resin temperature is cooled to 120 ° C. with a 90 mm diameter extruder, and the diameter is 90 mm.
- An extruded foam molded body of a rectangular parallelepiped styrenic resin was obtained by extruding into the atmosphere from a die lip having a rectangular cross section with a thickness direction of 2.5 mm and a width direction of 45 mm provided at the tip of the extruder.
- ⁇ Flame retardance> The oxygen index was measured according to JIS K-7201. ⁇ : Oxygen index is 26 or more ⁇ : Oxygen index is less than 26 ⁇ Molecular weight reduction rate> The molecular weights of the styrene resin before foam molding and the flame retardant styrene resin foam molding were measured by GPC analysis, and the reduction rate (%) of the weight average molecular weight (Mw) before and after molding of the polystyrene resin was calculated. ⁇ Recyclability> The cube formed by the bead method foaming was sliced with a cutter to form a board, and the board was compressed with a biaxial roll and then crushed with a pulverizer.
- Example 14 As is apparent from Table 5, it can be seen that the beaded foam molded body of Example 14 is excellent in any of the items of moldability, flame retardancy, and thermal stability. On the other hand, as in Comparative Examples 19 and 20, in the bead method foam molded article using only one type of bromine-containing organic compound, a material satisfying all of the flame stability, moldability, and thermal stability assuming recycling is obtained. I could't.
Abstract
Description
ブタジエンブロック共重合体
、水素化ブタジエン系重合体など)などが挙げられる。これらのゴム状重合体は単独もしくは2種以上を混合して使用できる。その使用量は、単量体成分中に好ましくは30重量%以下、さらに好ましくは20重量%以下である。
実施例および比較例に用いた原料は以下の通りである。
(A)スチレン系樹脂
(A1)
GP-PS;PSJポリスチレン G9305(PSジャパン(株)製)
(A2)
スチレン系樹脂ビーズ(下記の方法により製造)
撹拌機付き5Lオートクレーブに、イオン交換水2000g、リン酸第三カルシウム4g、ラウリルベンゼンスルホン酸ソーダ0.5gを仕込んだ後に撹拌しながら、触媒として予め溶解させたベンゾイルパーオキサイド(BPO)6gをスチレンモノマー2000gに加えて、100℃で8時間懸濁重合した。得られたポリスチレン系樹脂ビーズをろ別し蒸留水で洗った後に乾燥し、さらに、篩で分級して0.3~1.0mmの粒径範囲に選別することにてスチレン系樹脂ビーズ(A2)を得た。GPC分析での重量平均分子量(Mw)は、290,000であった。
(B)含臭素有機化合物
(a)-1
テトラブロモビスフェノール-A-ビス(2,3-ジブロモプロピル)エーテル;ピロガードSR-720(第一工業製薬(株)製)
(a)-2
テトラブロモビスフェノール-S-ビス(2,3-ジブロモプロピル)エーテル;ノンネンPR-2(丸菱油化工業(株)製)
(a)-3
トリス(2,3-ジブロモプロピル)イソシアヌレート;TAIC-6B(日本化成(株)製)
(a)-4
2,4,6-トリス(2,4,6-トリブロモフェノキシ)-1,3,5-トリアジン;ピロガードSR-245(第一工業製薬(株)製)
(a)-5
1,2-ビス(2,4,6-トリブロモフェノキシ)エタン;FF-680(ケムチュラ・ジャパン(株)製)
(a)-6
テトラブロモビスフェノールA;FR-1524(ICL-IP JAPAN(株)製)
(a)-7
ポリペンタブロモベンジルアクリレート;FR-1025(ICL-IP JAPAN(株)製)
(b)-1
テトラブロモビスフェノール-A-ビス(2,3-ジブロモ-2-メチルプロピル)エーテル;ピロガードSR-130(第一工業製薬(株)製)
(C)熱安定剤
トリス(2,4-ジ-t-ブチルフェニル)ホスファイトとペンタエリスリトールテトラキス[3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート]の混合物;IRGANOX B 225(チバ・スペシャルティ・ケミカルズ(株)製)
(E)難燃増強剤
2,3-ジメチル-2,3-ジフェニルブタン;ノフマーBC-90(日油(株)製)
(F)発泡剤
イソブタン
(発泡核剤)
タルクMS(日本タルク工業(株)製)
(添加剤)
ジオクチルアジペート;DOA(大八化学社製)
<試験片作成方法>
(押出発泡成形体)
口径65mmから口径90mmに直列連結した二段押出機の口径65mmの押出機に、発泡剤を除く表1および表2に記載の原料を投入し、200℃に加熱して溶融、可塑化、混練することによりスチレン系樹脂組成物とした。続いて、65mm押出機先端(口径90mmの押出機の口金と反対側)に別ラインで所定量の発泡剤を圧入し、口径90mmの押出機で樹脂温度を120℃に冷却して、口径90mmの押出機の先端に設けた厚さ方向2.5mm、幅方向45mmの長方形断面のダイリップより大気中へ押し出すことにより、直方体状のスチレン系樹脂の押出発泡成形体を得た。
(ビーズ法発泡成形体)
撹拌機を備えたオートクレーブに、蒸留水100重量部と、スチレン系樹脂ビーズと発泡剤を除く表3に記載の原料を、熱安定剤および配合剤の所定量を仕込み、室温で撹拌し、配合剤を乳化分散させた後、分級したポリスチレン系樹脂ビーズ100gを投入し、温度100℃にて5時間撹拌を続けて配合剤を含浸させた。これに発泡剤10gを圧入して、115℃で8時間の発泡剤含浸を行った。水を分離して得られたポリスチレン系樹脂ビーズを100℃の蒸気で加熱して予備発泡させた後、発泡物を成形型内に入れ、115℃の加圧蒸気により加熱融着させて立方体状発泡成形体を得た。
なお、発泡成形体の評価は下記の方法により行った。
<成形性>
発泡成形体の状態を目視により下記のように評価した。
○:ワレ、亀裂、ボイドなどなく、良好な発泡体が安定して得られた。
×:ダイからのガスの噴出しがあり、安定して発泡体が得られない。また、発泡体に、ワレや亀裂、ボイド等があった。
<難燃性>
JIS K-7201に従って酸素指数を測定した。
○:酸素指数が26以上
×:酸素指数が26未満
<分子量低下率>
発泡成形前のスチレン系樹脂と難燃性スチレン系樹脂発泡成形体の分子量をGPC分析にて測定し、ポリスチレン系樹脂の成形前後の重量平均分子量(Mw)の低下率(%)を計算した。
<リサイクル性>
ビーズ法発泡によって成形された立方体をカッターでスライスしてボードとし、2軸ロールにてボードを圧縮した上で、粉砕機で粗砕した。粗砕された回収樹脂をラボプラストミルに投入し、200℃で混練し、5分後に取出して冷却した樹脂をGPC分析して重量平均分子量を求め、分子量の低下率を計算した。
○:重量平均分子量の保持率が70%以上
×:重量平均分子量の保持率が70%未満
一方、表2および表4に記載の比較例1~5および比較例10~14のように、含臭素有機化合物を1種類のみ用いた押出発泡成形体では、難燃性、成形性、熱安定性の全てを満足させるものは得られなかった。また、比較例6~9および比較例15~18のように2,3-ジブロモ-2-アルキルプロピル構造を持たない含臭素有機化合物2種類を併用した場合でも、難燃性、成形性、熱安定性の全てを満足させるものは得られなかった。
一方、比較例19および20のように、含臭素有機化合物を1種類のみ用いたビーズ法発泡成形体では、難燃性、成形性、リサイクルを想定した熱安定性の全てを満足させるものは得られなかった。
Claims (10)
- スチレン系樹脂、含臭素難燃剤および発泡剤を含む難燃性発泡スチレン系樹脂組成物において、前記臭素含有難燃剤が、(a)2,3-ジブロモプロピル基を有する含臭素有機化合物または全ての臭素がベンゼン環へ結合している臭素含有量60重量%以上の含臭素有機化合物と、(b)2,3-ジブロモ-2-アルキルプロピル基を有する含臭素有機化合物との混合物であり、そしてスチレン系樹脂100重量部あたり含臭素難燃剤0.5~10重量部を含んでいることを特徴とする難燃性発泡スチレン系樹脂組成物。
- 前記全ての臭素原子がベンゼン環へ結合している臭素含有量60%以上の含臭素有機化合物は、テトラブロモビスフェノールA、ヘキサブロモベンゼン、ペンタブロモトルエン、ポリブロモジフェニルエーテル、ポリブロモジフェニルエタン、ビスポリブロモフェノキシエタン、トリスポリブロモフェノキシトリアジン、ポリブロモフェニルインダン、ポリペンタブロモベンジルアクリレート、およびエチレンビステトラブロモフタルイミドよりなる群から選ばれる請求項1の難燃性発泡スチレン系樹脂組成物。
- 前記2,3-ジブロモプロピル基を有する含臭素有機化合物は、テトラブロモビスフェノールA-ビス(2,3-ジブロモプロピルエーテル)、テトラブロモビスフェノールS-ビス(2,3-ジブロモプロピルエーテル)、テトラブロモビスフェノールF-ビス(2,3-ジブロモプロピルエーテル)、トリス(2,3-ジブロモプロピル)イソシアヌレート、およびトリス(2,3-ジブロモプロピルエーテル)よりなる群から選ばれる請求項1の難燃性発泡スチレン系樹脂組成物。
- 前記2,3-ジブロモ-2-アルキルプロピル基を有する含臭素有機化合物は、テトラブロモビスフェノールA-ビス(2,3-ジブロモ-2-メチルプロピルエーテル)、テトラブロモビスフェノールS-ビス(2,3-ジブロモ-2-メチルプロピルエーテル)、およびテトラブロモビスフェノールF-ビス(2,3-ジブロモ-2-メチルプロピルエーテル)よりなる群から選ばれる請求項1ないし3のいずれかの難燃性発泡スチレン系樹脂組成物。
- 前記含臭素難燃剤中、(b)2,3-ジブロモ-2-アルキルプロピル基を有する含臭素有機化合物に対する、(a)2,3-ジブロモプロピル基を有する含臭素有機化合物または全ての臭素原子がベンゼン環へ結合している臭素含有量60重量%以上の含臭素有機化合物の比(a)/(b)は、重量基準で90/10ないし10/90である請求項1の難燃性発泡スチレン系樹脂組成物。
- さらにホスファイド化合物、チオエーテル化合物およびヒンダードフェノール化合物より選ばれた熱安定剤を、スチレン系樹脂100重量部あたり0.01~0.5重量部含んでいる請求項1ないし5のいずれかの難燃性発泡スチレン系樹脂組成物。
- さらにフタロシアニン金属錯塩およびラジカル発生剤よりなる群から選ばれた難燃増強剤を、スチレン系樹脂100重量部あたり0.01~0.5重量部含んでいる請求項1ないし5のいずれかの難燃性発泡スチレン系樹脂組成物。
- さらにタルク、ベントナイト、カオリン、マイカ、シリカ、クレーおよび珪藻土からなる群から選ばれた発泡核剤を、スチレン系樹脂100重量部あたり0.01~20重量部含んでいる請求項1ないし5のいずれかの難燃性発泡スチレン系樹脂組成物。
- 発泡剤を含まない請求項1ないし8のいずれかの難燃性発泡スチレン系樹脂を押出機中で溶融し、発泡剤を圧入した後押出機の口金から大気中へ押出発泡して得られる発泡成形体。
- 請求項1ないし8のいずれかの難燃性発泡スチレン系樹脂組成物のビーズを水蒸気で加熱することにより予備発泡させた後、成形型内で発泡成形して得られる発泡成形体。
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PL2426165T3 (pl) | 2016-12-30 |
US9187607B2 (en) | 2015-11-17 |
EP2426165A4 (en) | 2012-09-12 |
TWI491655B (zh) | 2015-07-11 |
EP2426165B1 (en) | 2016-06-29 |
HUE030035T2 (en) | 2017-04-28 |
KR20120001794A (ko) | 2012-01-04 |
CN102356123A (zh) | 2012-02-15 |
KR101357378B1 (ko) | 2014-02-03 |
CN102356123B (zh) | 2013-03-27 |
US20110313069A1 (en) | 2011-12-22 |
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