JP2018504294A - 高いTg及び高い弾性率を有する多層中間膜 - Google Patents
高いTg及び高い弾性率を有する多層中間膜 Download PDFInfo
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- JP2018504294A JP2018504294A JP2017530632A JP2017530632A JP2018504294A JP 2018504294 A JP2018504294 A JP 2018504294A JP 2017530632 A JP2017530632 A JP 2017530632A JP 2017530632 A JP2017530632 A JP 2017530632A JP 2018504294 A JP2018504294 A JP 2018504294A
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- layer
- poly
- resin
- phr
- vinyl acetal
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Abstract
Description
(A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂を含む高Mw層;及び
(B)160,000以下の重量平均分子量(Mw)及び少なくとも46℃のガラス転移温度(Tg)を有するポリ(ビニルアセタール)樹脂を含む高Tg層:
を含む多層中間膜構造体が提供される。高ガラス転移温度(Tg)の層は、望ましくは190℃において2.16キログラムの荷重下で測定して少なくとも0.65グラム/10分のメルトフローインデックスを有する。
(A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;及び
(B)160,000以下の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり2部〜20部の量の可塑剤を含み、少なくとも46℃のガラス転移温度(Tg)を有する高Tg層;
を含む多層中間膜も提供される。
(A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;
(B)160,000以下の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり2部〜20部の量の可塑剤を含み、少なくとも46℃のガラス転移温度(Tg)を有する高Tg層;及び
(C)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;
を含み、
高Tg層は複数の高Mw層の間に配置されている多層中間膜も提供される。
(A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂を含む高Mw層;及び
(B)160,000以下の重量平均分子量(Mw)及び少なくとも46℃のガラス転移温度(Tg)を有するポリ(ビニルアセタール)樹脂を含む高Tg層:
を含む多層中間膜構造体が提供される。
[0029]高Mw層又は少なくとも1つのスキン層は、サイズ排除クロマトグラフィーによってCotts及びOuanoの低角レーザー光散乱(SEC/LALLS)法を用いてテトラヒドロフラン中で測定して、160,000より高く、好ましくは少なくとも165,000、又は少なくとも170,000、又は少なくとも175,000、又は少なくとも180,000、或いは少なくとも185,000の重量平均分子量(Mw)を有し、これはそれぞれの場合において約250,000ダルトン以下であってよい。「分子量」という用語は重量平均分子量(Mw)を意味する。本明細書において示す分子量を求める方法には、移動相としてヘキサフルオロイソプロパノール(0.8mL/分)を用いることが含まれる。約20ミリグラムの樹脂を25mLのフラスコ中に秤量投入し、10mLの移動相を加えることによってそれぞれの試料を調製する。次に、ポリマーが完全に溶解するまでフラスコを自動振盪装置内に配置する。Viscotek GPCmax(自動サンプラー、ポンプ、及び脱気装置を有する)、Viscotek3重検出器TDA302(RALL/LALLS、粘度計、及びDRIの組み合わせ)を、カラムオーブン(Malvern Instruments, Malvern,英国から商業的に入手できる)と共に含む3検出器システムを用いて分析を行う。分離は、45℃に維持したタイプI−MB(1つの低及び2つの高範囲分子量)を含む3つのViscotek混合床カラムによって行う。報告された93.458の分子量、0.615の固有粘度、及び0.1875の屈折率の微分(dn/dc)の値を有する狭いポリ(メチルメタクリレート)標準試料(Viscotekから商業的に入手できる)を用いて、検出器装置全体を較正する。PVBに関しては、移動相の屈折率は1.2649であり、0.189のdn/dc値を用いる。データの計算のために、Viscotek Omnisec 4.7.0ソフトウエア(Malvern Instrumentsから商業的に入手できる)を用いる。
[0064]高Tg中間層シートは、中間層シートの製造の当業者に公知の任意の好適なプロセスによって製造することができる。例えば、高Tg中間層シートは、浸漬被覆、溶液キャスト、圧縮成形、射出成形、溶融押出、メルトブロー、又は当業者に公知の中間層シートを生成及び製造するための任意の他の手順によって形成することができると意図される。
(i)ダイ、及びバレルを有する押出機を含む押出システムを与え;
(ii)ポリ(ビニルアセタール)樹脂及び可塑剤をバレル中に供給し、ポリ(ビニルアセタール)樹脂及び可塑剤を含む溶融した熱可塑性組成物を押出機及びダイに通して押出されたシートを生成させ、ここで溶融した熱可塑性樹脂のメルトフローインデックス(MFI)は190℃において2.16キログラムの荷重で測定して少なくとも0.65g/10分であり;そして
(iii)シートを冷却して、少なくとも46.0℃のガラス転移温度(Tg)を有する中間層シートを生成させる;
ことによって高Tg中間層ポリ(ビニルアセタール)シートを製造することができる方法も提供される。
[0067]示されているように、押出機1、フィルター2、ダイ4、及びフィルター2とダイ4の間に配置されているメルトポンプ3から構成されている押出システムが提供される。
[0082]対照のSaflex(登録商標)DG41シートを用いてTgを測定し、実験例と比較した。Saflex(登録商標)DG41−PVBは構造用途用の商業製品であり、市場において入手できるために用いた。
Claims (47)
- (A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂を含む高Mw層;及び
(B)160,000以下の重量平均分子量(Mw)及び少なくとも46℃のガラス転移温度(Tg)を有するポリ(ビニルアセタール)樹脂を含む高Tg層:
を含む多層中間膜。 - 高Tg層は、190℃において2.16キログラムの荷重下で測定して少なくとも0.65グラム/10分のメルトフローインデックス(MFI)を有する、請求項1に記載の多層中間膜。
- 高Tg層は120cpを超えない溶液粘度を有する、請求項1に記載の多層中間膜。
- 高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は100,000を超えない、請求項1に記載の多層中間膜。
- 高Tg層はポリ(ビニルアセタール)樹脂100部あたり少なくとも5部の量の可塑剤を更に含む、請求項1に記載の多層中間膜。
- 高Tg層は、高Tg層中において140,000を超えない重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり2部〜20部の範囲の量の可塑剤を含む、請求項1に記載の多層中間膜。
- 高Tg層は、150,000を超えない重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり約5部〜20部の範囲の量の可塑剤を含み、少なくとも50℃のガラス転移温度(Tg)を有し、高Mw層は、少なくとも180,000の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び少なくとも23phrの量の可塑剤を含み、46℃を超えないガラス転移温度(Tg)を有する、請求項1に記載の多層中間膜。
- 高Mw層のガラス転移温度(Tg)は、高Tg層のガラス転移温度(Tg)よりも少なくとも4℃低い、請求項1に記載の多層中間膜。
- 高Mw層及び高Tg層はそれぞれ可塑剤を有し、少なくとも1つの高Tg層は高Mw層よりも少なくとも7phr少ない可塑剤を有する、請求項1に記載の多層中間膜。
- 高Mw層は、少なくとも180,000の重量平均分子量(Mw)、少なくとも20phrの量の可塑剤、及び46℃未満のガラス転移温度(Tg)を有し、高Tg層は、150,000以下の重量平均分子量(Mw)、20phr未満の量の可塑剤、少なくとも46℃のガラス転移温度(Tg)、及び少なくとも10,000,000パスカルの50℃におけるE’弾性率を有する、請求項1に記載の多層中間膜。
- 少なくとも2つの高Mw層を含み、少なくとも2つの高Mw層の間に高Tg中間層が配置されている、請求項1に記載の多層中間膜。
- (A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;及び
(B)160,000以下の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり2部〜20部の量の可塑剤を含み、少なくとも46℃のガラス転移温度(Tg)を有する高Tg層;
を含む多層中間膜。 - 高Tg層は120cpsを超えない溶液粘度を有し、高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は100,000を超えない、請求項12に記載の多層中間膜。
- 高Tg層は、150,000を超えない重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり約5部〜20部の範囲の量の可塑剤を含み、少なくとも50℃のガラス転移温度(Tg)を有し;
高Mw層は、少なくとも180,000の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及び少なくとも23phrの量の可塑剤を含み、46℃を超えないガラス転移温度(Tg)を有する、請求項12に記載の多層中間膜。 - 高Tg層は120cpsを超えない溶液粘度を有する、請求項12に記載の多層中間膜。
- 高Mw層のTgは高Tg層のガラス転移温度(Tg)よりも少なくとも4℃低い、請求項12に記載の多層中間膜。
- (A)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;
(B)160,000以下の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり2部〜20部の量の可塑剤を含み、少なくとも46℃のガラス転移温度(Tg)を有する高Tg層;及び
(C)160,000より高い重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂及び可塑剤を含み、46℃未満のガラス転移温度(Tg)を有する高Mw層;
を含み、
高Tg層は複数の高Mw層の間に配置されている多層中間膜。 - 高Tg層は120cpsを超えない溶液粘度を有する、請求項17に記載の多層中間膜。
- 少なくとも1つの高Mw層のガラス転移温度(Tg)は高Tg層のガラス転移温度(Tg)よりも少なくとも4℃低い、請求項17に記載の多層中間膜。
- 高Tg層は、150,000を超えない重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及びポリ(ビニルアセタール)樹脂100部あたり約5部〜20部の範囲の量の可塑剤を含み、少なくとも50℃のガラス転移温度(Tg)を有し;
少なくとも1つの高Mw層は、少なくとも180,000の重量平均分子量(Mw)を有するポリ(ビニルアセタール)樹脂、及び少なくとも23phrの量の可塑剤を含み、46℃を超えないガラス転移温度(Tg)を有する、請求項17に記載の多層中間膜。 - 高Tg層は少なくとも50℃のガラス転移温度(Tg)を有する、請求項1に記載の多層中間膜。
- 高Tg層は少なくとも52℃のガラス転移温度(Tg)を有する、請求項1に記載の多層中間膜。
- 高Tg層は少なくとも0.7のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は少なくとも0.7のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は少なくとも0.9のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は少なくとも1のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は少なくとも1.2のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は少なくとも2のメルトフローインデックス(MFI)を有する、請求項2に記載の多層中間膜。
- 高Tg層は100cpsを超えない溶液粘度を有する、請求項1に記載の多層中間膜。
- 高Tg層及び高Mw層は少なくとも80重量%のポリ(ビニルアセタール)樹脂を含む、請求項1に記載の多層中間膜。
- 高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は150,000を超えない、請求項1に記載の多層中間膜。
- 高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は140,000を超えない、請求項1に記載の多層中間膜。
- 高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は120,000を超えない、請求項1に記載の多層中間膜。
- 高Tg層中のポリ(ビニルアセタール)樹脂の重量平均分子量(Mw)は100,000を超えない、請求項1に記載の多層中間膜。
- 高Tg層中の可塑剤の量は、ポリ(ビニルアセタール)樹脂100部あたり少なくとも8部である、請求項1に記載の多層中間膜。
- 高Mw層のガラス転移温度(Tg)は、高Tg層のガラス転移温度(Tg)よりも少なくとも8℃低い、請求項1に記載の多層中間膜。
- 高Tg層及び高Mw層中のポリ(ビニルアセタール)樹脂はポリビニルブチラールを含む、請求項1に記載の多層中間膜。
- ポリ(ビニルアセタール)樹脂は14重量%〜23重量%のヒドロキシル基含量を有する、請求項1に記載の多層中間膜。
- ポリ(ビニルアセタール)樹脂のビニルブチラール基含量は少なくとも60重量%である、請求項38に記載の多層中間膜。
- 多層中間膜全体は15ミル〜60ミルの範囲の厚さを有する、請求項1に記載の多層中間膜。
- 多層中間膜全体は15ミル〜60ミルの範囲の厚さを有し、40℃における高Tg中間層のE’弾性率は少なくとも300,000,000パスカルであり、50℃における高Tg中間層のE’弾性率は少なくとも10,000,000パスカルである、請求項1に記載の多層中間膜。
- 40℃におけるE’弾性率は少なくとも600,000,000パスカルであり、50℃におけるE’弾性率は少なくとも50,000,000パスカルである、請求項41に記載の多層中間膜。
- 40℃における高Tg中間層のE’弾性率は少なくとも600,000,000パスカルであり、50℃における高Tg中間層のE’弾性率は少なくとも50,000,000パスカルである、請求項1に記載の多層中間膜。
- 少なくとも2つの高Mw層を含み、少なくとも2つの高Mw層の間に高Tg中間層が配置されている、請求項1に記載の多層中間膜。
- 多層中間膜がガラス基材に積層されている、請求項1に記載の多層中間膜。
- 多層中間膜がガラスの2つの層の間に配置されている、請求項1に記載の多層中間膜。
- ガラス基材及びポリマーフィルムを更に含み、ポリマーフィルムはポリ(ビニルアセタール)とは異なるポリマーである、請求項1に記載の多層中間膜。
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