JP2015522673A - 難燃性ポリマー発泡体を含む物品 - Google Patents
難燃性ポリマー発泡体を含む物品 Download PDFInfo
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- JP2015522673A JP2015522673A JP2015518754A JP2015518754A JP2015522673A JP 2015522673 A JP2015522673 A JP 2015522673A JP 2015518754 A JP2015518754 A JP 2015518754A JP 2015518754 A JP2015518754 A JP 2015518754A JP 2015522673 A JP2015522673 A JP 2015522673A
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- C08J9/103—Azodicarbonamide
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Abstract
Description
発泡倍率=(1−Vf)−1
(a)約1.7〜約3.5の分子量分布(Mw/Mn)を有し、少なくとも1つの℃単位の融点(Tm)、およびグラム/立方センチメートル単位の密度(d*)に関して、Tmおよびd*の数値が、
Tm>−2002.9+4538.5(d*)−2422.2(d*)2
の関係式を満たすエチレン/α−オレフィンインターポリマー、および/または
(b)約1.7〜約3.5のMw/Mnを有し、グラム当たりのジュール(J/g)単位の融解熱(ΔH)、および示差走査熱量測定(DSC)の最高ピークと降温溶離分別法(crystallization analysis fractionation)(CRYSTAF)の最高ピークとの間の差の温度として定義される℃単位のデルタ量(ΔT)に関して、ΔTおよびΔHの数値が、
ΔT>−0.1299(ΔH)+62.81(ΔHが0を超え、130J/g以下の場合)、
ΔT≧48℃(ΔHが130J/gを超える場合)、
の関係式を満たし、CRYSTAFピークが累積ポリマーの少なくとも5パーセントを使って測定され、さらに、5パーセント未満のポリマーが特定可能なCRYSTAFピークを有する場合は、CRYSTAF温度は30℃であることを特徴とするエチレン/α−オレフィンインターポリマー、および/または
(c)エチレン/アルファオレフィンインターポリマー圧縮成形フィルムで測定して、300パーセント歪時のパーセント単位の1サイクルでの弾性回復(Re)、および、グラム/立方センチメートル単位の密度(d*)に関して、エチレン/アルファ−オレフィンインターポリマーが架橋相を実質的に含まない場合、Reおよびd*の数値が、
Re>1481−1629(d*)
の関係式を満たすことを特徴とするエチレン/α−オレフィンインターポリマー、または
(d)昇温溶離分別法(TREF)を使って分別した場合、40℃〜130℃で溶出する分子画分を有し、その画分が、同じ温度範囲で溶出する同等のコモノマーランダムエチレンインターポリマー画分よりも少なくとも5パーセント大きいコモノマーモル含量を有することを特徴とし、前記同等のランダムエチレンインターポリマーが、同じコモノマーを有し、また、エチレン/アルファオレフィンインターポリマーの値の10パーセント(全ポリマーをベースとして)以内のメルトインデックス、密度、およびコモノマーモル含量を有するエチレン/α−オレフィンインターポリマー、および/または
(e)25℃での貯蔵弾性率(G’(25℃))、および100℃での貯蔵弾性率(G’(100℃))を有し、G’(100℃)に対するG’(25℃)の比率が約1:1〜約9:1の範囲にあるエチレン/α−オレフィンインターポリマー。
オレフィンブロック共重合体は、
(f)TREFを使って分別された場合、40℃〜130℃で溶出する分子画分が、少なくとも0.5〜約1のブロックインデックスおよび約1.3を超えるMw/Mn、および/または
(g)0を超え、約1.0までの平均ブロックインデックスおよび約1.3を超えるMw/Mn、
を有することを特徴とする特性の内の一方または両方を、上記に加えて、あるいはこれに代えて含んでもよい。
発泡体層および表皮層用の試料は、別々に調製および試験された。約2mmの厚さの発泡体層用発泡シートを試験に使用した。約1mm厚さの表皮層用圧縮成形シートを試験した。試料調製および試験条件は、下記に記載の自己消炎性および耐溶融滴下性に対する追加の要件を含むFMVSS302の試験に準拠する。
(1)燃焼速度要件
試料が燃焼もせず、1分当たり4インチ(インチ/分)を超える速度で火炎前面がその表面全体に伝播もしない場合、FMVSS302基準の燃焼速度要件に適合する。それ以外の場合は、燃焼速度要件に不合格である。
(2)自己消炎性および耐溶融滴下性要件
試験は、次のFMVSS302基準の試験手続A〜Eで行われる。その試験で、試験片の固定端から1.5インチの点に火炎が到達するまでに、試料が自己消炎性および非溶融滴下性の両方を示す場合、自己消炎性および耐溶融滴下性要件に合格である。それ以外で、試験片が自己消炎に失敗するか、または溶融滴下性を示す場合、不合格となる。
垂直燃焼試験を下記のように工業的方法に従って行った。発泡体層に対しては、発泡シートから試験片(厚さ:2mm、幅:10センチメートル(cm)、長さ:20cm)を切り出した。表皮層に対しては、圧縮成形シートから(厚さ:1.0mm、幅:10cm、長さ:20cm)の試験片を切り出した。試験片をプロパンガスにより生成される火炎に対し垂直の位置に固定した。火炎の長さは、1.5インチである。10秒間、試験片を火炎にさらす。ガス供給を停止し、時間を計り始める。各試料に対し、少なくとも3個の試験片を試験した。3個全ての試験片が2秒以内に燃焼を停止し、溶融滴下性を示さない場合、試料は垂直燃焼試験に合格である。
ポリマー発泡体の空隙体積率を以下のように概算したが、上述の発泡体とポリマーマトリックス密度から計算した空隙体積率と同じであるはずである。圧縮成形シート(またはカレンダ加工シート)を起泡させるために3分間、220℃の加熱炉中に置いて、発泡シートを得た。圧縮成形シートの厚さ(すなわち、元の厚さまたは非膨張厚さ)をTHKnと表す。発泡シートの厚さ(すなわち、発泡厚さ)をTHKfと表す。発泡体の空隙体積率(Vf)は、
Vf=(THKf−THKn)/THKf
として測定される。
発泡倍率は、空隙体積率から、(1−Vf)−1として計算される。
密度は、ASTM D−792−08に準じて測定した。
MIは、ASTM D−1238に準じて、190℃、2.16kgで測定した。
MFRは、ASTM D−1238に準じて、230℃、2.16kgで測定した。
塩素化ポリエチレンのムーニー粘度は、ISO289に準じて、Mooney large rotor(ML)、ML1+4を使って125℃で測定した。
ショアA硬度は、ASTM D−2240に準じて、10秒のタイミングで測定した。厚さ約6mmの圧縮成形シートを使用した。
QUVA加速耐候試験をASTM G53に準じて、500時間行った。表皮層用の圧縮成形シートを試験に使った。
引張特性をD1708−06A(マイクロ引張)に準じて、1分当たり500ミリメートル(mm/分)の速度で測定した。発泡体層用の発泡シートおよび表皮層用の圧縮成形シートからダイカッターを使って「ドッグボーン形状」の試験片を切り出した。
表1の成分を、60rpmのローター回転速度のHaake密閉式ミキサー(Polylab OS Rheo Drive 7)を使って、140〜150℃で5〜6分間混合して化合物を得る。得られた化合物を0.7(±0.1)mm厚さのシートに圧縮成形、または2本ロールミルでカレンダ加工した。
(a)圧縮成形シートを一定の時間、220℃の加熱炉に入れて発泡させ、約2mm厚さの発泡シートを得た。発泡シートをFRおよび機械的試験用の所望のサイズに切断した。
(b)150〜160℃、6〜10rpmのロール速度、および0.3〜1.0mmのニップクリアランスの条件で実験室規模の2本ロールミルを使って化合物のカレンダ加工性を評価した。良好なカレンダ加工性は、化合物が、(i)150〜160℃でロールに粘着しない、(ii)スムーズバンキングを有する、(iii)容易にロールから剥離できる、および(iv)平滑な/光沢のあるシートを生成することを意味する。
表2の成分を60rpmのローター回転速度のHaake密閉式ミキサー(Polylab OS Rheo Drive 7)を使って、140〜150℃で5〜6分間混合して化合物を得た。化合物を1.0(±0.1)mm厚さのシートに圧縮成形した。得られたシートをFRおよび機械的な試験用の所望のサイズに切断した。
Claims (14)
- ポリマー発泡体を含む物品であって、前記ポリマー発泡体が内部に気泡を画定する連続ポリマーマトリックスを含み、前記ポリマーマトリックスが、(a)メルトインデックスが2グラム/10分以上である、25〜65重量パーセントの1種以上のオレフィンブロック共重合体、(b)ムーニー粘度(ML1+4、125℃)が60未満である、65〜25重量パーセントの1種以上の塩素化オレフィンポリマー(重量パーセント値は、前記ポリマー発泡体中の合計ポリマー重量に対する値である)、および(c)前記ポリマー発泡体中の100重量部のポリマーに対して5〜30重量部の三酸化アンチモンを含む、物品。
- 前記オレフィンブロック共重合体が、エチレンマルチブロック共重合体である、請求項1に記載の物品。
- 前記ポリマー発泡体が、(a)40〜60重量パーセントの前記オレフィンブロック共重合体、(b)60〜40重量パーセントの前記塩素化オレフィンポリマー(重量パーセント値は、前記連続ポリマー相中の合計ポリマー重量に対する値である)、および(c)前記連続ポリマー相中の100重量部のポリマーに対して5〜20重量部の三酸化アンチモンを含む、請求項1または2に記載の物品。
- 前記塩素化オレフィンポリマーの前記ムーニー粘度が55未満である、請求項1〜3のいずれか1項に記載の物品。
- 前記ポリマー発泡体が、1種以上の塩素化パラフィンをさらに含む、請求項1〜4のいずれか1項に記載の物品。
- 前記ポリマー発泡体が、少なくとも10重量部の三酸化アンチモンを含む、請求項1〜5のいずれか1項に記載の物品。
- 前記ポリマー発泡体が、少なくとも2.5の発泡倍率を有する、請求項1〜6のいずれか1項に記載の物品。
- 表皮層および基布層をさらに含み、前記ポリマー発泡体が、前記表皮層と前記基布層との間に存在する、請求項1〜7のいずれか1項に記載の物品。
- 前記表皮層が、(i)5〜70重量パーセントの1種以上のオレフィンブロック共重合体、(ii)10〜80重量パーセントの1種以上の塩素化オレフィンポリマー(重量パーセント値は、前記表皮層中の合計ポリマー重量に対する値である)、および(iii)前記表皮層の100重量部のポリマーに対して5〜30重量部の三酸化アンチモンを含む、請求項8に記載の物品。
- 前記表皮層および発泡体の内の少なくとも一方が、1種以上のプロピレン/アルファオレフィン共重合体をさらに含む、請求項9に記載の物品。
- 前記表皮層が、1種以上の塩素化パラフィンをさらに含む、請求項9に記載の物品。
- 前記表皮層が、少なくとも10重量部の三酸化アンチモンを含む、請求項9に記載の物品。
- 請求項1〜12のいずれか1項に記載の物品を調製するプロセスであって、
(1)(a)メルトインデックスが2グラム/10分以上である、25〜65重量パーセントの1種以上のオレフィンブロック共重合体、(b)ムーニー粘度(ML1+4、125℃)が60未満である、65〜25重量パーセントの1種以上の塩素化オレフィンポリマー(重量パーセント値は、前記発泡性ポリマー組成物中の合計ポリマー重量に対する値である)、(c)前記発泡性ポリマー組成物中の100重量部のポリマーに対して5〜30重量部の三酸化アンチモン、および(d)発泡剤、を含む発泡性ポリマー組成物を提供するステップと、
(2)前記発泡性ポリマー組成物中の前記成分を溶融混合するステップと、
(3)前記発泡性ポリマー組成物を膨張させてポリマー発泡体を形成するステップと、を含む、プロセス。 - 前記発泡性ポリマー組成物中の前記成分が、カレンダ加工プロセスにより溶融混合されてシートが形成され、前記発泡性ポリマー組成物が膨張して前記ポリマー発泡体が形成される前に、前記シートが表皮層および/または基布層に積層され、前記ポリマー発泡体が前記表皮層と前記基布層との間に存在する、請求項13に記載のプロセス。
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- 2012-06-27 BR BR112014031816-6A patent/BR112014031816B1/pt active IP Right Grant
- 2012-06-27 SG SG11201408762WA patent/SG11201408762WA/en unknown
- 2012-06-27 JP JP2015518754A patent/JP5923219B2/ja active Active
- 2012-06-27 EP EP12879745.3A patent/EP2867013B1/en active Active
- 2012-06-27 CN CN201280075437.0A patent/CN104582947B/zh active Active
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JP2018519389A (ja) * | 2015-06-30 | 2018-07-19 | ダウ グローバル テクノロジーズ エルエルシー | 耐吸塵性を有するポリマー配合物 |
JP7002943B2 (ja) | 2015-06-30 | 2022-01-20 | ダウ グローバル テクノロジーズ エルエルシー | 耐吸塵性を有するポリマー配合物 |
JP2022017231A (ja) * | 2015-06-30 | 2022-01-25 | ダウ グローバル テクノロジーズ エルエルシー | 耐吸塵性を有するポリマー配合物 |
JP2019536826A (ja) * | 2016-09-28 | 2019-12-19 | ダウ グローバル テクノロジーズ エルエルシー | エラストマーコポリマーおよびブロックコポリマーの配合物 |
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EP2867013A4 (en) | 2016-02-17 |
BR112014031816B1 (pt) | 2021-02-02 |
SG11201408762WA (en) | 2015-02-27 |
JP5923219B2 (ja) | 2016-05-24 |
WO2014000177A1 (en) | 2014-01-03 |
EP2867013A1 (en) | 2015-05-06 |
BR112014031816A2 (pt) | 2017-06-27 |
US20170198111A1 (en) | 2017-07-13 |
CN104582947A (zh) | 2015-04-29 |
CN104582947B (zh) | 2017-03-15 |
KR102074324B1 (ko) | 2020-02-07 |
US11661488B2 (en) | 2023-05-30 |
TWI626160B (zh) | 2018-06-11 |
TW201404599A (zh) | 2014-02-01 |
EP2867013B1 (en) | 2017-09-27 |
KR20150034195A (ko) | 2015-04-02 |
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