JP7441789B2 - 回復時間が長い軟質ポリウレタンフォーム - Google Patents
回復時間が長い軟質ポリウレタンフォーム Download PDFInfo
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- JP7441789B2 JP7441789B2 JP2020547184A JP2020547184A JP7441789B2 JP 7441789 B2 JP7441789 B2 JP 7441789B2 JP 2020547184 A JP2020547184 A JP 2020547184A JP 2020547184 A JP2020547184 A JP 2020547184A JP 7441789 B2 JP7441789 B2 JP 7441789B2
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- polyurethane foam
- glycol mono
- tackifier
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- 229910052623 talc Inorganic materials 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
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Description
A)225以下のヒドロキシル当量を有するポリエーテルポリオールまたは2つ以上のそのようなポリエーテルポリオールの混合物であって、ポリオールまたはポリオールの混合物が、(i)2~4の数平均ヒドロキシル官能価を有し、(ii)170未満のヒドロキシル価を有する少なくとも1つのポリエーテルポリオールを含み、(iii)少なくとも10重量%のオキシエチレン含有量を有し、かつ/または少なくとも40重量%のオキシエチレン単位を含む少なくとも1つのポリエーテルポリオールを含む、ポリエーテルポリオールまたはポリエーテルポリオールの混合物、
B)成分A)100重量部あたり1~5重量部の水、を含む、反応混合物と、
C)少なくとも1つの有機イソシアネートと、を、
以下、
D)イソシアネート基と水および/またはアルコールとの反応のための少なくとも1つの触媒、
E)少なくとも1つの泡安定化界面活性剤、
F)成分A)100重量部あたり1~45重量部の粘着付与剤であって、
(i)25℃で少なくとも5,000センチポアズの粘度を有し、
(ii)最大20°Cのガラス転移温度を有する、粘着付与剤、
および
G)成分A)100重量部あたり0.05~10重量部の少なくとも1つのモノアルコールであって、モノアルコールが、少なくとも4個の炭素原子、最大300g/molの分子量、およびコーンプレート粘度計を使用して測定して、25℃で最大500cpsの粘度、を有することを特徴とするが、さらに、成分F)およびG)の重量比率が少なくとも20:80であり、95:5以下であることを条件とする、モノアルコール、の存在下で、反応させることを含み、
成分F)およびG)は、成分A)およびC)のいずれかと組み合わせる前に事前にブレンドされて、コーンプレート粘度計を使用して測定して、25℃で20,000cps以下の粘度を有するプレブレンドを形成する。
(i)粘度が、25℃で、少なくとも5,000センチポアズ、好ましくは少なくとも10,000cpsまたは少なくとも25,000cpsであり、かつ
(ii)ガラス転移温度が、高くとも20℃、好ましくは高くとも0℃または高くとも-10℃である。
ポリオールAは、分子量1000の公称3官能性のポリエーテルポリオールである。これは、約0%の重合されたエチレンオキシド、91%の重合されたプロピレンオキシド、および9%の開始剤残留物を含有する。
これらの実験で使用する粘着付与剤は、Kraton CorporationからSylvares(登録商標)TR A25Lとして販売されているポリテルペン樹脂である。この製品は、その製造業者の報告によると、軟化温度が22~28℃、ガラス転移温度が-20℃である。固体であるため、25℃でのその粘度は測定には高すぎる。本製品の50℃での粘度は、その製造業者の報告によると、4450cpsである。このポリテルペン樹脂は、これらの実施例に記載されているポリオールA~Cの混合物と非相溶性である。これは、発泡反応の条件下で、ポリオール混合物、水、およびポリイソシアネートに対して不活性である。
追加のプレブレンドを、プレブレンドA~Fと類似の方法で作製する。いずれの場合も、粘着付与剤の割合は91.16:9.84である。粘着付与剤は、プレブレンドA~Fで使用したポリテルペン樹脂である。プレブレンドの各々の粘度は、TA InstrumentsのAR2000コーンプレート粘度計を使用して決定する。コーンプレートの直径は25mm、剪断速度は10ラド/秒、周波数スイープは0.01~100ラド/秒の範囲である。結果を表4に示す。
本願発明には以下の態様が含まれる。
項1.
軟質ポリウレタンフォームを作製する方法であって、60~110のイソシアネート指数で、
A)225以下のヒドロキシル当量を有するポリエーテルポリオールまたは2つ以上のそのようなポリエーテルポリオールの混合物であって、前記ポリオールまたはポリオールの混合物が、(i)2~4の数平均ヒドロキシル官能価を有し、(ii)170未満のヒドロキシル価を有する少なくとも1つのポリエーテルポリオールを含み、(iii)少なくとも10重量%のオキシエチレン含有量を有し、かつ/または少なくとも40重量%のオキシエチレン単位を含む少なくとも1つのポリエーテルポリオールを含む、ポリエーテルポリオールまたはポリエーテルポリオールの混合物、
B)成分A)100重量部あたり1~5重量部の水、を含む、反応混合物を、
C)少なくとも1つの有機イソシアネートと、
以下、
D)イソシアネート基と水および/またはアルコールとの前記反応のための少なくとも1つの触媒、
E)少なくとも1つの泡安定化界面活性剤、
F)成分A)100重量部あたり1~45重量部の粘着付与剤であって、
(i)25℃で少なくとも5,000センチポアズの粘度を有し、
(ii)最大20°Cのガラス転移温度を有する、粘着付与剤、
ならびに
G)成分A)100重量部あたり0.05~10重量部の少なくとも1つのモノアルコールであって、前記モノアルコールが、少なくとも4個の炭素原子、最大300g/molの分子量、およびコーンプレート粘度計を使用して測定して、25℃で最大500cpsの粘度、を有することを特徴とするが、さらに、成分F)およびG)の重量比率が少なくとも20:80であり、95:5以下であることを条件とする、モノアルコール、の存在下で、反応させることを含み、
成分F)およびG)が、成分A)およびC)のいずれかと組み合わせる前に事前にブレンドされて、コーンプレート粘度計を使用して測定して、25℃で20,000cps以下の粘度を有するプレブレンドを形成する、方法。
項2.
前記粘着付与剤が、ロジン、水素化および/またはエステル化ロジン、ポリテルペン、C5脂肪族樹脂、C9芳香族樹脂、C5/C9コポリマー樹脂、水素化C5またはC9樹脂、ブタンのポリマーまたはコポリマー、エポキシ樹脂、スチレン/共役ジエンコポリマー、エチレン-アクリル酸コポリマー、密度が0.900g/cc未満のエチレン-高級アルファオレフィンコポリマー、シリコーンオイル、セルロース系カチオン性ポリアクリルアミド、パラ-t-オクチルフェノールホルムアルデヒド樹脂、数平均分子量が400~2000のポリエステル、ウレタンアクリレートオリゴマー、ならびに室温で液体のエチレン-プロピレン-ジエン樹脂のうちの1つ以上を含む、項1に記載の方法。
項3.
前記粘着付与剤が少なくとも1つのロジンを含む、項2に記載の方法。
項4.
前記粘着付与剤が少なくとも1つのポリテルペンを含む、項2に記載の方法。
項5.
前記粘着付与剤の量が、成分A)100重量部あたり5~25重量部である、項1~4のいずれか一項に記載の方法。
項6.
前記粘着付与剤の量が成分A)100重量部あたり7.5~20重量部である、項1~5のいずれか一項に記載の方法。
項7.
前記モノアルコールが、少なくとも5個の炭素原子および最大250の分子量を有する、項1~6のいずれか一項に記載の方法。
項8.
前記モノアルコールは、ハンセン分散性パラメータが13.9~17.4(J/cc)1/2、ハンセン極性パラメータが1.7~9.2(J/cc)1/2、ハンセン水素結合パラメータが3.8~13.9(J/cc)1/2である、項1~7のいずれか一項に記載の方法。
項9.
成分G)が、1-ペンタノール、2-ペンタノール、3-ペンタノール、1-ヘキサノール、2-ヘキサノール、2-エチル-1-ブタノール、1-ヘプタノール、2-ヘプタノール、1-オクタノール、2-エチル-1-ヘキサノール、プロピレングリコールモノ-n-ブチルエチル、ジプロピレングリコールモノ-n-ブチルエーテル、トリプロピレングリコールモノ-n-ブチルエーテル、2,6-ジメチル-4-ヘプタノール、エチレングリコールモノ-n-ブチルエーテル、ジエチレングリコールモノ-n-ブチルエーテル、トリエチレングリコールn-ブチルエーテル、エチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノ-n-ヘキシルエーテル、トリエチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノフェニルエーテル、トリエチレングリコールモノフェニルエーテル、プロピレングリコールモノフェニルエーテル、ジプロピレングリコールモノフェニルエーテル、およびトリプロピレングリコールモノフェニルエーテルのうちの1つ以上である、項1~8のいずれか一項に記載の方法。
項10.
成分G)が、プロピレングリコールモノ-n-ブチルエチル、ジプロピレングリコールモノ-n-ブチルエーテル、トリプロピレングリコールモノ-n-ブチルエーテル、2,6-ジメチル-4-ヘプタノール、エチレングリコールモノ-n-ブチルエーテル、ジエチレングリコールモノ-n-ブチルエーテル、トリエチレングリコールn-ブチルエーテル、エチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノ-n-ヘキシルエーテル、およびトリエチレングリコールモノ-n-ヘキシルエーテルのうちの1つ以上から選択される、項9に記載の方法。
項11.
前記軟質ポリウレタンフォームは、少なくとも1秒の回復時間を有する、項1~10のいずれか一項に記載の方法。
項12.
前記軟質ポリウレタンフォームが、少なくとも2秒の回復時間を有する、項1~11のいずれか一項に記載の方法。
項13.
前記軟質ポリウレタンフォームが、少なくとも1.4L/秒の気流を呈し、24~64kg/m3の密度を有する、項1~12のいずれか一項に記載の方法。
項14.
前記軟質ポリウレタンフォームが、多くとも30%の弾性を有する、項1~13のいずれか一項に記載の方法。
項15.
項1~14のいずれか一項に記載の方法に従って作製された、ポリウレタンフォーム。
項16.
前記粘着付与剤が、前記ポリウレタンフォームの内面の表面積の2.5~40%を占める、項15に記載の軟質ポリウレタンフォーム。
項17.
前記粘着付与剤は、最長寸法が10nm~200μmの不連続領域の形態で、前記ポリウレタンフォームの内面に存在する、項15または16に記載の軟質ポリウレタンフォーム。
Claims (16)
- 軟質ポリウレタンフォームを60~110のイソシアネート指数で作製する方法であって、
A)225以下のヒドロキシル価を有するポリエーテルポリオールまたは2つ以上のそのようなポリエーテルポリオールの混合物であって、前記ポリオールまたはポリオールの混合物が、(i)2~4の数平均ヒドロキシル官能価を有し、(ii)170未満のヒドロキシル価を有する少なくとも1つのポリエーテルポリオールを含み、(iii)少なくとも10重量%のオキシエチレン含有量を有し、かつ/または少なくとも40重量%のオキシエチレン単位を含む少なくとも1つのポリエーテルポリオールを含む、ポリエーテルポリオールまたはポリエーテルポリオールの混合物、
B)成分A)100重量部あたり1~5重量部の水、を含む、反応混合物を、
C)少なくとも1つの有機イソシアネートと、
以下、
D)イソシアネート基と水および/またはアルコールとの反応のための少なくとも1つの触媒、
E)少なくとも1つのシリコーン界面活性剤、
F)成分A)100重量部あたり1~45重量部の粘着付与剤であって、
(i)25℃で少なくとも5,000センチポアズの粘度を有し、
(ii)最大20°Cのガラス転移温度を有する、粘着付与剤、
ならびに
G)成分A)100重量部あたり0.05~10重量部の少なくとも1つのモノアルコールであって、前記モノアルコールが、少なくとも4個の炭素原子、最大300g/molの分子量、およびコーンプレート粘度計を使用して測定して、25℃で最大500cpsの粘度、を有することを特徴とするが、さらに、成分F)およびG)の重量比率が少なくとも20:80であり、95:5以下であることを条件とする、モノアルコール、の存在下で、反応させることを含み、
成分F)およびG)が、成分A)およびC)のいずれかと組み合わせる前に事前にブレンドされて、コーンプレート粘度計を使用して測定して、25℃で20,000cps以下の粘度を有するプレブレンドを形成し、
成分G)が、1-ペンタノール、2-ペンタノール、3-ペンタノール、1-ヘキサノール、2-ヘキサノール、2-エチル-1-ブタノール、1-ヘプタノール、2-ヘプタノール、1-オクタノール、2-エチル-1-ヘキサノール、プロピレングリコールモノ-n-ブチルエチル、ジプロピレングリコールモノ-n-ブチルエーテル、トリプロピレングリコールモノ-n-ブチルエーテル、2,6-ジメチル-4-ヘプタノール、エチレングリコールモノ-n-ブチルエーテル、ジエチレングリコールモノ-n-ブチルエーテル、トリエチレングリコールn-ブチルエーテル、エチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノ-n-ヘキシルエーテル、トリエチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノフェニルエーテル、トリエチレングリコールモノフェニルエーテル、プロピレングリコールモノフェニルエーテル、ジプロピレングリコールモノフェニルエーテル、およびトリプロピレングリコールモノフェニルエーテルのうちの1つ以上である、方法。 - 前記粘着付与剤が、ロジン、水素化および/またはエステル化ロジン、ポリテルペン、C5脂肪族樹脂、C9芳香族樹脂、C5/C9コポリマー樹脂、水素化C5またはC9樹脂、ブタンのポリマーまたはコポリマー、エポキシ樹脂、スチレン/共役ジエンコポリマー、エチレン-アクリル酸コポリマー、密度が0.900g/cm 3 未満のエチレン-高級アルファオレフィンコポリマー、シリコーンオイル、セルロース系カチオン性ポリアクリルアミド、パラ-t-オクチルフェノールホルムアルデヒド樹脂、数平均分子量が400~2000のポリエステル、ウレタンアクリレートオリゴマー、ならびに室温で液体のエチレン-プロピレン-ジエン樹脂のうちの1つ以上を含む、請求項1に記載の方法。
- 前記粘着付与剤が少なくとも1つのロジンを含む、請求項2に記載の方法。
- 前記粘着付与剤が少なくとも1つのポリテルペンを含む、請求項2に記載の方法。
- 前記粘着付与剤の量が、成分A)100重量部あたり5~25重量部である、請求項1~4のいずれか一項に記載の方法。
- 前記粘着付与剤の量が成分A)100重量部あたり7.5~20重量部である、請求項1~5のいずれか一項に記載の方法。
- 前記モノアルコールが、少なくとも5個の炭素原子および最大250の分子量を有する、請求項1~6のいずれか一項に記載の方法。
- 前記モノアルコールは、ハンセン分散性パラメータが13.9~17.4(J/cm 3 ) 1/2 、ハンセン極性パラメータが1.7~9.2(J/cm 3 ) 1/2 、ハンセン水素結合パラメータが3.8~13.9(J/cm 3 ) 1/2 である、請求項1~7のいずれか一項に記載の方法。
- 成分G)が、プロピレングリコールモノ-n-ブチルエチル、ジプロピレングリコールモノ-n-ブチルエーテル、トリプロピレングリコールモノ-n-ブチルエーテル、2,6-ジメチル-4-ヘプタノール、エチレングリコールモノ-n-ブチルエーテル、ジエチレングリコールモノ-n-ブチルエーテル、トリエチレングリコールn-ブチルエーテル、エチレングリコールモノ-n-ヘキシルエーテル、ジエチレングリコールモノ-n-ヘキシルエーテル、およびトリエチレングリコールモノ-n-ヘキシルエーテルのうちの1つ以上から選択される、請求項1~8のいずれか一項に記載の方法。
- 前記軟質ポリウレタンフォームは、少なくとも1秒の回復時間を有し、ここで、前記回復時間は、前記軟質ポリウレタンフォームを初期の厚さの24%に圧縮し、前記圧縮された軟質ポリウレタンフォームを60秒間圧縮下で保持し、圧縮力を解放した後に、前記圧縮された軟質ポリウレタンフォームが元の厚さの95%に戻るのに必要な時間である、請求項1~9のいずれか一項に記載の方法。
- 前記軟質ポリウレタンフォームが、少なくとも2秒の回復時間を有し、ここで、前記回復時間は、前記軟質ポリウレタンフォームを初期の厚さの24%に圧縮し、前記圧縮された軟質ポリウレタンフォームを60秒間圧縮下で保持し、圧縮力を解放した後に、前記圧縮された軟質ポリウレタンフォームが元の厚さの95%に戻るのに必要な時間である、請求項1~10のいずれか一項に記載の方法。
- 前記軟質ポリウレタンフォームが、ASTM D-3574に従って測定される少なくとも1.4L/秒の気流を示し、24~64kg/m3の密度を有する、請求項1~11のいずれか一項に記載の方法。
- 前記軟質ポリウレタンフォームが、ASTM D-3574に従って測定される多くとも30%の弾性を有する、請求項1~12のいずれか一項に記載の方法。
- 請求項1~13のいずれか一項に記載の方法に従って作製された、ポリウレタンフォーム。
- 前記粘着付与剤が、前記ポリウレタンフォームの内面の表面積の2.5~40%を占める、請求項14に記載の軟質ポリウレタンフォーム。
- 前記粘着付与剤は、最長寸法が10nm~200μmの不連続領域の形態で、前記ポリウレタンフォームの内面に存在する、請求項14または15に記載の軟質ポリウレタンフォーム。
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