JP7372464B2 - 熱可塑性樹脂組成物及びその成形品 - Google Patents
熱可塑性樹脂組成物及びその成形品 Download PDFInfo
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- JP7372464B2 JP7372464B2 JP2022521340A JP2022521340A JP7372464B2 JP 7372464 B2 JP7372464 B2 JP 7372464B2 JP 2022521340 A JP2022521340 A JP 2022521340A JP 2022521340 A JP2022521340 A JP 2022521340A JP 7372464 B2 JP7372464 B2 JP 7372464B2
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- compound
- aromatic vinyl
- vinyl cyanide
- cyanide compound
- Prior art date
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Description
本出願は、2020年07月23日付の韓国特許出願第10-2020-0091651号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み込まれる。
本発明のA-1)一般粒径のASA樹脂のアクリレートゴムは、一例として平均粒径が0.3~0.5μmであってもよく、好ましくは0.35~0.5μmであってもよく、より好ましくは0.35~0.45μm、さらに好ましくは0.40~0.45μmであり、この範囲内で、耐候性が良いながらも、流動性、引張強度及び衝撃強度などの機械的強度に優れるという効果がある。
本発明のA-2)小粒径のASA樹脂のアクリレートゴムは、一例として平均粒径が0.1~0.2μmであってもよく、好ましくは0.1~0.18μmであり、より好ましくは0.11~0.15μm、さらに好ましくは0.11~0.13μmであるが、この範囲内で、最終製造される熱可塑性樹脂組成物に、優れた耐候性、着色性、衝撃強度、耐化学性及び光沢を付与することができる。
本発明のB)芳香族ビニル重合体は、ベース樹脂の総重量に対して、好ましくは20~65重量%、より好ましくは30~65重量%、さらに好ましくは30~60重量%、より一層好ましくは40~60重量%、最も好ましくは45~55重量%であり、この範囲内で、耐候性に優れ、光沢に優れるという効果がある。
前記i)芳香族ビニル化合物-ビニルシアン化合物共重合体は、ベース樹脂の総重量に対して、好ましくは20~60重量%、より好ましくは30~60重量%、さらに好ましくは40~50重量%、最も好ましくは45~50重量%であり、この範囲内で、耐溶剤性及び耐化学性に優れるという効果がある。
前記ii)耐熱スチレン系樹脂は、ベース樹脂の総重量に対して、好ましくは30重量%以下、より好ましくは20重量%以下、さらに好ましくは10重量%以下であり、好ましい一実施例としてはベース樹脂に含まれないものであり、このような場合、耐溶剤性及び耐化学性に優れるという利点がある。
前記iii)メタクリレート-芳香族ビニル化合物-ビニルシアン化合物共重合体は、ベース樹脂の総重量に対して、好ましくは40重量%以下、より好ましくは30重量%以下であり、具体例としては1~40重量%、好ましい例としては10~40重量%、より好ましい例としては10~30重量%、さらに好ましい例としては20~30重量%であり、この範囲内で、耐候性が大きく向上し、引張強度、硬度などの機械的物性に優れるという効果がある。
本発明のC)ポリアミドは、耐溶剤性及び耐化学性に大きく寄与するが、好ましくは、前記ベース樹脂100重量部を基準として0.5~12重量部、より好ましくは1~10重量部、さらに好ましくは3~10重量部、より一層好ましくは4~10重量部、最も好ましくは6~10重量部であってもよく、この範囲内で、耐溶剤性及び耐化学性に優れ、物性バランスに優れるという利点がある。
本発明の熱可塑性樹脂組成物は、好ましくは、水98重量%、クエン酸1重量%及びリンゴ酸1重量%からなる溶剤下でクラック(crack)が発生する時間として測定される耐溶剤性が15日以上であり、この場合、従来のASA系樹脂と比較して機械的物性及び加工性などが同等以上に維持されながら、特に様々な色の実現が可能であり、変色及びクラックが発生しないため、産業用台車の用途に適するという利点がある。
本発明の成形品は、本発明の熱可塑性樹脂組成物を含むことを特徴とし、このような場合、機械的物性及び加工性などに優れながらも、様々な色の実現が可能であり、耐溶剤性及び耐化学性に優れて変色及びクラックが発生しないという利点がある。
下記実施例1~7及び比較例1~7で用いられた物質は、次の通りである。
それぞれ、下記の表1に記載された成分及び含量を二軸押出機にて230℃下で36ファイの規格で押出混練機を用いてペレットに製造し、これを、フィルム押出機を通じて厚さ0.15Tで均一にフィルムとして作製した後、これを試料(sample)として、下記の測定方法によりフィルム光沢度などを測定した。このとき、フィルム押出機は、シート成形用一軸押出機(Collin社製、E20T製品、15ファイ、L/D:20)を用い、温度条件は、押出機の投入口から順にバレル部の温度50、200、210、210℃及びダイ部の温度220、220、230℃にセットした。ペレットは、フィルム押出機に投入する前に80℃のオーブンで3時間以上十分に乾燥させて水分の影響を除去した後、フィルム押出機の投入口に投入して厚さ0.15Tで均一にフィルムを作製した。使用された後段ローラ(Roller)の温度は、水を媒質として用いて85℃にセットし、ローラの構成は、下記の図3のように、Tダイ(T-Die)を通じて押し出される樹脂の片面のみがロール(Roll)と接触するタイプを用いた。ここで、フィルム押出機のスクリュー(Screw)のRPMは100に固定し、ロールの線速度を調節してフィルムの厚さが0.15Tになるようにした。ここで、押出されたフィルムの面のうち一番目のロールと接触した面に対してフィルム光沢度などを測定した。
前記実施例1~7及び比較例1~7で製造されたペレット、シート及び試験片の特性を下記の方法で測定し、その結果を下記の表1に示した。
Claims (10)
- A-1)平均粒径0.3~0.5μmのアクリレートゴムを含むアクリレート-芳香族ビニル化合物-ビニルシアン化合物グラフト共重合体10~50重量%、A-2)平均粒径0.05μm以上~0.3μm未満のアクリレートゴムを含むアクリレート-芳香族ビニル化合物-ビニルシアン化合物グラフト共重合体5~40重量%、及びB)芳香族ビニル重合体20~65重量%を含むベース樹脂100重量部と;C)ポリアミド0.5~12重量部とを含み、
水98重量%、クエン酸1重量%及びリンゴ酸1重量%からなる溶剤下でクラック(crack)が発生する時間として測定される耐溶剤性が15日以上であることを特徴とする、熱可塑性樹脂組成物であって、
前記B)芳香族ビニル重合体は、芳香族ビニル化合物-ビニルシアン化合物共重合体であり、芳香族ビニル化合物-ビニルシアン化合物共重合体は、ベース樹脂の総重量に対して、a)重量平均分子量が100,000~150,000g/molである芳香族ビニル化合物-ビニルシアン化合物共重合体10~60重量%、及びb)重量平均分子量が150,000g/mol超~200,000g/mol以下である芳香族ビニル化合物-ビニルシアン化合物共重合体0~40重量%を含み、
芳香族ビニル化合物-ビニルシアン化合物共重合体の芳香族ビニル化合物はスチレンである、熱可塑性樹脂組成物。 - 前記A-1)及びA-2)アクリレート-芳香族ビニル化合物-ビニルシアン化合物グラフト共重合体は、アクリレートゴム40~60重量%、芳香族ビニル化合物20~40重量%及びビニルシアン化合物10~20重量%を含んでなることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記芳香族ビニル化合物-ビニルシアン化合物共重合体は、芳香族ビニル化合物65~80重量%及びビニルシアン化合物20~35重量%を含んでなることを特徴とする、請求項1又は2に記載の熱可塑性樹脂組成物。
- 前記C)ポリアミドは、ナイロン6及びナイロン66を含むことを特徴とする、請求項1~3のいずれか一項に記載の熱可塑性樹脂組成物。
- 前記ナイロン6とナイロン66の重量比(ナイロン6:ナイロン66)は1:1.1~10であることを特徴とする、請求項4に記載の熱可塑性樹脂組成物。
- 100ml当たり殺虫活性成分であるペルメトリン(シス:トランス異性体比25:75)が0.25g溶解されたペルメトリン希釈エマルジョン溶液下でクラック(crack)が発生する時間として測定される耐化学性が15日以上であることを特徴とする、請求項1~5のいずれか一項に記載の熱可塑性樹脂組成物。
- グロスメーターVG7000により45°で測定した射出光沢度(gloss)が30以下であることを特徴とする、請求項1~6のいずれか一項に記載の熱可塑性樹脂組成物。
- 請求項1~7のいずれか一項に記載の熱可塑性樹脂組成物を含むことを特徴とする、成形品。
- 前記熱可塑性樹脂組成物と鋼管を共押出した無塗装コーティングパイプであることを特徴とする、請求項8に記載の成形品。
- A-1)平均粒径0.3~0.5μmのアクリレートゴムを含むアクリレート-芳香族ビニル化合物-ビニルシアン化合物グラフト共重合体10~50重量%、A-2)平均粒径0.05μm以上~0.3μm未満のアクリレートゴムを含むアクリレート-芳香族ビニル化合物-ビニルシアン化合物グラフト共重合体5~40重量%、及びB)芳香族ビニル重合体20~65重量%を含むベース樹脂100重量部と、C)ポリアミド0.5~12重量部とを押出機に投入してペレットを製造するステップと;製造されたペレットと鋼管を共押出して無塗装コーティングパイプを製造するステップとを含み、
前記無塗装コーティングパイプは、水98重量%、クエン酸1重量%及びリンゴ酸1重量%からなる溶剤下でクラック(crack)が発生する時間として測定される耐溶剤性が15日以上であることを特徴とする、無塗装コーティングパイプの製造方法であって、
前記B)芳香族ビニル重合体は、芳香族ビニル化合物-ビニルシアン化合物共重合体であり、芳香族ビニル化合物-ビニルシアン化合物共重合体は、ベース樹脂の総重量に対して、a)重量平均分子量が100,000~150,000g/molである芳香族ビニル化合物-ビニルシアン化合物共重合体10~60重量%、及びb)重量平均分子量が150,000g/mol超~200,000g/mol以下である芳香族ビニル化合物-ビニルシアン化合物共重合体0~40重量%を含み、
芳香族ビニル化合物-ビニルシアン化合物共重合体の芳香族ビニル化合物はスチレンである、製造方法。
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