JP6495958B2 - アクリル系加工助剤、その製造方法及びそれを含む塩化ビニル系樹脂組成物 - Google Patents
アクリル系加工助剤、その製造方法及びそれを含む塩化ビニル系樹脂組成物 Download PDFInfo
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- JP6495958B2 JP6495958B2 JP2017024167A JP2017024167A JP6495958B2 JP 6495958 B2 JP6495958 B2 JP 6495958B2 JP 2017024167 A JP2017024167 A JP 2017024167A JP 2017024167 A JP2017024167 A JP 2017024167A JP 6495958 B2 JP6495958 B2 JP 6495958B2
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- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- UNZSHUCNBUBSGW-IFNWOZJISA-M sodium;(9z,12z,15z)-octadeca-9,12,15-trienoate Chemical compound [Na+].CC\C=C/C\C=C/C\C=C/CCCCCCCC([O-])=O UNZSHUCNBUBSGW-IFNWOZJISA-M 0.000 description 1
- SLBXZQMMERXQAL-UHFFFAOYSA-M sodium;1-dodecoxy-4-hydroxy-1,4-dioxobutane-2-sulfonate Chemical compound [Na+].CCCCCCCCCCCCOC(=O)C(S(O)(=O)=O)CC([O-])=O SLBXZQMMERXQAL-UHFFFAOYSA-M 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical class [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical class [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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Description
前記コア及び前記シェルは、メチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を共重合して得られた重合体を含み、
前記コアは、重量平均分子量が、10,000,000〜18,000,000g/mol範囲の重合体を含むことを特徴とするアクリル系加工助剤を提供する。
メチルメタクリレート系単量体70〜99重量%;及び炭素数1〜18のアルキルアクリレート系単量体1〜30重量%;を含むことを特徴とする。
この時、前記シェルは、シェルをなす単量体100重量%に対して、
メチルメタクリレート系単量体20〜40重量%;及び炭素数1〜18のアルキルアクリレート系単量体40〜80重量%;を含むことを特徴とする。
コア75〜95重量%;及びシェル5〜25重量%;を含むことを特徴とする。
前記コアとメチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を重合してシェルを製造するステップ;を含むコア-シェル構造のアクリル系加工助剤の製造方法を提供する。
前記コアとメチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を重合してシェルを製造するステップ;を含む。
(1)ステップ1:コアの製造
撹拌機と温度計、窒素投入口、循環コンデンサ付き4口フラスコ反応器を準備し、イオン水(deionized water)70重量部、硫酸第一鉄0.002重量部、エチレンジアミン4酢酸二ナトリウム0.04重量部を投入し、窒素の雰囲気下で前記反応器内部温度を40℃で保持した。
前記ステップ1で製造されたコアにメチルメタクリレート、ブチルアクリレート、ドデシルベンゼンスルホン酸ナトリウム0.2重量部を混合後、重合した。このとき、前記メチルメタクリレートとブチルアクリレートは、33:67重量比で投入した。前記ステップ1で製造されたコアの含量は、下記表1に記載した通りである。
前記ステップ2で得たコアシェルアクリル系加工助剤を固形分基準15重量%になるように希釈し、凝集槽に入れ、内部温度を70℃に上昇させた。そこに前記コアシェルアクリル系加工助剤の固形分基準100重量部に対して、塩化カルシウム溶液(10重量%)を一度に投入し、凝集して、スラリーを得た後、スラリーをイオン交換数で2〜3回洗浄し、副産物を除去した後、ろ過して多量の洗浄水を除去した。次いで、実験室用途に使用される小型の流動層乾燥機(Fluidized−bed dryer)を利用し、80℃で3時間間、乾燥して、粉末試料を得た。
t−ブチルヒドロペルオキシドを、ステップ1のときに0.0001重量部、ステップ2のときに0.01重量部で添加したことを除いて、前記実施例1と同様に行った。
ステップ1のときに、メチルメタクリレートとブチルアクリレートを94.4:5.6重量比で使用し、ステップ2のときに、メチルメタクリレートとブチルアクリレートを40:60重量比で添加し、コア:シェルの割合を90:10で調節したことを除いて、前記実施例1と同様に行った。
ステップ1は、メチルメタクリレートとブチルアクリレートを94.1:5.9重量比で、ステップ2は、メチルメタクリレートとブチルアクリレートを33:67重量比でそれぞれ重合を行って得られたそれぞれのラテックスを85:15重量比で混合して使用したことを除いて、前記実施例1と同様に行った。
ステップ1のときに、メチルメタクリレートとブチルアクリレートを93.8:6.2重量比で使用し、ステップ2のときに、コア:シェルの割合を97:3で調節したことを除いて、前記実施例1と同様に行った。
ステップ1のときに、メチルメタクリレートとブチルアクリレートを94.3:5.7重量比で使用し、ステップ2のときに、コア:シェルの割合を70:30で調節したことを除いて、前記実施例1と同様に行った。
t−ブチルヒドロペルオキシドを、ステップ1のときに0.0002重量部、ステップ2のときに0.001重量部で添加したことを除いて、前記実施例1と同様に行った。
t−ブチルヒドロペルオキシドを、ステップ1のときに0.001重量部、ステップ2のときに0.01重量部で添加したことを除いて、前記実施例1と同様に行った。
前記実施例及び比較例のステップ1及びステップ2から得られたコア及びシェルをなす重合体を室温乾燥し、固形分0.03gをテトラヒドロフラン(THF)10mLに24時間溶解した後、ゲル浸透クロマトグラフィー(GPC)を利用して重量平均分子量を測定、得られた結果は下記表1に示した。
(1)凝集温度の測定
前記実施例及び比較例で得られたアクリル系加工助剤を目開きが200人メッシュ(篩サイズ0.075mm)で通過分の含量が20%以下になる温度を測定した。このとき、得られた結果は下記表2に示した。
塩化ビニル系樹脂(LS080、LG化学社製)100重量部に熱安定剤OT−700R(SONGWON社製、錫系の熱安定剤)1.5重量部、滑剤G−16(Loxiol)0.8重量部、G−70S(Loxiol)0.5重量部を添加し、そこに実施例又は比較例のアクリル系加工助剤(粉末)5重量部、発泡剤アゾジカルボンアミド(azodicarbonamide)0.8重量部を添加し、ヘンシェルミキサーを利用して115℃まで昇温し、混合して、塩化ビニル系樹脂組成物を製造した。
Claims (8)
- コア-シェル構造のアクリル系加工助剤であって、
前記コア及び前記シェルは、メチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を共重合して得られた重合体を含み、
前記コアは、重量平均分子量が10,000,000〜18,000,000g/mol範囲の重合体を含み、
全体100重量%に対して、前記コア75〜95重量%と前記シェル25〜5重量%を含み、
前記シェルは、重量平均分子量が、200,000〜2,000,000g/molの重合体を含み、
前記シェルは、シェルをなす単量体100重量%に対して、
メチルメタクリレート系単量体33〜40重量%;及び
炭素数1〜18のアルキルアクリレート系単量体67〜60重量%;
を含む
ことを特徴とするアクリル系加工助剤。 - 前記コアは、コアをなす単量体の全重量に対して、
メチルメタクリレート系単量体70〜99重量%;及び
炭素数1〜18のアルキルアクリレート系単量体1〜30重量%;
を含む請求項1に記載のアクリル系加工助剤。 - 前記炭素数1〜18のアルキルアクリレート単量体が、メチルアクリレート、エチルアクリレート、プロピルアクリレート、イソプロピルアクリレート、ブチルアクリレート、ヘキシルアクリレート、オクチルアクリレート、ラウリルアクリレート、ステアリルアクリレート、2−エチルヘキシルアクリレート及びシクロヘキシルアクリレートよりなる群から選ばれた1種以上である請求項1または2に記載のアクリル系加工助剤。
- 前記コア又はシェルのいずれか一つ以上は、ビニル系単量体を、更に含む請求項1〜3のいずれか一項に記載のアクリル系加工助剤。
- 前記ビニル系単量体が、スチレン、α−メチルスチレン、p−メチルスチレン、o−エチルスチレン、p−エチルスチレン、ビニルトルエン、アクリロニトリル、メタクリロニトリル及びエタクリロニトリルよりなる群から選ばれた1種以上である請求項4に記載のアクリル系加工助剤。
- 前記ビニル系単量体は、コア又はシェルをなす単量体全重量に対して、0〜20重量%で更に含まれる請求項4または5に記載のアクリル系加工助剤。
- メチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を重合してコアを製造するステップ;及び
前記コアとメチルメタクリレート単量体及び炭素数1〜18のアルキルアクリレート単量体を重合してシェルを製造するステップ;
を含む請求項1に記載のコア-シェル構造のアクリル系加工助剤の製造方法。 - 塩化ビニル系樹脂100重量部に対して、
請求項1〜6のいずれか1項に記載のアクリル系加工助剤を0.1〜30重量部で含む塩化ビニル系樹脂組成物。
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KR102248039B1 (ko) | 2018-07-13 | 2021-05-04 | 주식회사 엘지화학 | 코어-쉘 공중합체 제조방법, 이로부터 제조된 코어-쉘 공중합체 및 이를 포함하는 수지 조성물 |
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KR101253814B1 (ko) | 2009-10-14 | 2013-04-15 | 주식회사 엘지화학 | 아크릴계 중합체 조성물, 이의제조방법 및 이를 포함하는 염화비닐 수지 조성물 |
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KR101497766B1 (ko) | 2012-04-03 | 2015-03-05 | 주식회사 엘지화학 | 가교 고분자 나노입자 함유 조성물, 공중합체의 제조 방법 및 이를 포함한 발포 성형성 보강 염화비닐 수지 |
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