JP7431221B2 - 難燃性樹脂組成物、その製造方法及び水添石油樹脂 - Google Patents
難燃性樹脂組成物、その製造方法及び水添石油樹脂 Download PDFInfo
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- C08L57/00—Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08L57/02—Copolymers of mineral oil hydrocarbons
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/04—Reduction, e.g. hydrogenation
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—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 acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- 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
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- 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
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- C08K2003/2224—Magnesium hydroxide
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
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Description
(実施例1)
<不飽和炭化水素の重合体の合成>
表1に示す各成分を、表1に示す質量比で混合し、混合溶液を得た。次いで、得られた混合溶液を熱重合装置(東洋高圧社製)に投入した。次いで、混合溶液を昇温速度5℃/分の条件で276℃まで昇温させ、120分間維持した。その後、冷却水を流し、急冷させ、熱重合樹脂溶液を得た。得られた熱重合樹脂溶液に対して、軽質分除去(蒸留)を行い、未反応物及び低重合度の成分を除去することで、重合体を得た。
得られた不飽和炭化水素の重合体をケロシンに、30質量%濃度となるように調整して溶解させた。得られた溶液をニッケル系触媒が充填された水添リアクターに投入し、同時に水素を流通させ、圧力18MPa、温度280℃の条件で不飽和炭化水素の重合体の水素添加を1時間行い、不飽和炭化水素の重合体の水添物を含む溶液を得た。得られた不飽和炭化水素の重合体の水添物を含む溶液に対して軽質分除去(蒸留)を行い、溶液中のケロシンを除去し、水添石油樹脂(石油樹脂A)を得た。
混合溶液の成分を表1に示す組成に変更したこと、及び重合時の最大温度を268℃にしたこと以外は、実施例1と同様の方法により、水添石油樹脂(石油樹脂B)を得た。
混合溶液の成分を表1に示す組成に変更したこと、及び重合時の最大温度を268℃にしたこと以外は、実施例1と同様の方法により、水添石油樹脂(石油樹脂C)を得た。
表1に示す組成を有する溶液を準備し、当該溶液とルイス酸触媒を30℃に設定した重合装置に導入し、触媒重合樹脂溶液を得た。得られた触媒重合樹脂溶液に対して、軽質分除去(蒸留)を行い、未反応物及び低重合度の成分を除去することで、不飽和炭化水素の重合体(石油樹脂D)を得た。
表1に示す組成を有する溶液を準備し、当該溶液とルイス酸触媒を30℃に設定した重合装置に導入し、触媒重合樹脂溶液を得た。得られた触媒重合樹脂溶液に対して、軽質分除去(蒸留)を行い、未反応物及び低重合度の成分を除去することで、不飽和炭化水素の重合体(石油樹脂E)を得た。
上記で得られた石油樹脂A~Eのサンプルの軟化点を、メトラートレド社のDP70を使用して、ASTM D6090に準拠した方法により測定した。結果を表1に示す。
上記で得られた石油樹脂A~E、エチレン-酢酸ビニル共重合体、無機充填材及び酸化防止剤を、下記表2に示す組成(単位:質量%)で混練し、難燃性樹脂組成物を得た。混練には、加圧式ニーダー(東洋精機社製)及びロール機(KNEADER MACHINERY社製)を使用し、混練の条件は、開始温度180℃、回転速度50rpm、混練時間15分とした。なお、表2中の成分の詳細は以下のとおりである。
無機充填材:水酸化マグネシウム、協和化学工業社製、キスマ5A
酸化防止剤:BASF社製、Irganox1010
実施例4~8及び比較例3~4で得られた難燃性樹脂組成物を、加熱温度180℃、加熱時間10分の条件で加熱成形し、難燃性樹脂成形体を作製した。得られた難燃性樹脂成形体を厚さ1mm×幅5mm×標線間距離20mmのダンベル状3号形に打ち抜き、試験片を得た。得られた試験片を用い、JIS K6251を参考にして引張速度200mm/分にて引張試験を行い、破断点ひずみ(破断するまでの樹脂の伸長率)を測定した。結果を表2に示す。表2において、破断点ひずみの値が大きいほど、破断までの伸び率が大きいといえる。
実施例4~8で得られた難燃性樹脂組成物について、上記破断点ひずみ以外の以下の物性を評価した。各評価結果を表3に示す。
実施例4~8で得られた難燃性樹脂組成物を、加熱温度180℃、加熱時間10分の条件で加熱成形し、難燃性樹脂成形体を作製した。得られた難燃性樹脂成形体を厚さ1mm×幅5mm×標線間距離20mmのダンベル状3号形に打ち抜き、得られた試験片をJIS K6251に記載された方法を参考に、引張速度200mm/分にて降伏応力・破断点応力を測定した。結果を表3に示す。表3において、降伏応力・破断点応力の値が大きいほど、引張特性が良好であるといえる。
実施例4~8で得られた難燃性樹脂組成物について、JIS K7210-1のA法(質量測定法)に準拠し、温度190℃、荷重2.16kg又は21.6kgの条件でMFRを測定した。測定結果を表3に示す。いずれの実施例においても、加工性に実用上問題がない程度のMFR値を示した。なお表3において、各荷重におけるMFRの値が大きいほど、加工性が良好であるといえる。
実施例4~8で得られた難燃性樹脂組成物を、加熱温度180℃、加熱時間10分の条件で加熱成形し、難燃性樹脂成形体を作製した。得られた難燃性樹脂成形体を厚さ3mm×幅6.5mm×長さ128mmのIV型に打ち抜き、得られた試験片をJIS K7201-2に記載された方法を参考に、手順C、点火方法:B法(伝ぱ点火)にて測定した。結果を表3に示す。いずれの実施例においても、難燃性に実用上問題がない程度の限界酸素指数を示した。なお表3において、限界酸素指数の値が大きいほど、難燃性に優れているといえる。
実施例4~8で得られた難燃性樹脂組成物について、JIS K7112のA法(水中置換法)に準拠し、23℃における密度を測定した。結果を表3に示す。
Claims (4)
- 五員環を有する脂環式化合物及び芳香族炭化水素化合物を含む不飽和炭化水素の重合体の水添物である水添石油樹脂と、
エチレン-酢酸ビニル共重合体及びエチレン-アクリル酸エチル共重合体からなる群より選ばれる少なくとも1種を含むポリオレフィンと、
無機充填材と、
を含有し、
前記不飽和炭化水素における前記芳香族炭化水素化合物の含有量C1と前記脂環式化合物の含有量C2との比C1/C2(質量比)が、0.25以上1.38以下であり、
前記水添石油樹脂の含有量が、難燃性樹脂組成物全量を基準として、1質量%以上25質量%以下であり、
前記ポリオレフィンの含有量が、難燃性樹脂組成物全量を基準として、5質量%以上35質量%以下である、難燃性樹脂組成物。 - 前記脂環式化合物が、ジシクロペンタジエン骨格を有するDCPD系化合物を含む、請求項1に記載の難燃性樹脂組成物。
- 前記芳香族炭化水素化合物が、インデン骨格を有するインデン系化合物及びスチレン骨格を有するスチレン系化合物からなる群より選ばれる少なくとも1種を含む、請求項1又は2に記載の難燃性樹脂組成物。
- 五員環を有する脂環式化合物及び芳香族炭化水素化合物を含む不飽和炭化水素の重合体の水添物である水添石油樹脂と、エチレン-酢酸ビニル共重合体及びエチレン-アクリル酸エチル共重合体からなる群より選ばれる少なくとも1種を含むポリオレフィンと、無機充填材と、を接触させる工程を備える、難燃性樹脂組成物の製造方法であって、
前記不飽和炭化水素における前記芳香族炭化水素化合物の含有量C1と前記脂環式化合物の含有量C2との比C1/C2(質量比)が、0.25以上1.38以下であり、
前記水添石油樹脂の含有量が、難燃性樹脂組成物全量を基準として、1質量%以上25質量%以下であり、
前記ポリオレフィンの含有量が、難燃性樹脂組成物全量を基準として、5質量%以上35質量%以下である、難燃性樹脂組成物の製造方法。
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