処理中

しばらくお待ちください...

設定

設定

1. US20070014976 - Thermoplastic resin sheet and laminate

官庁 アメリカ合衆国
出願番号 10551460
出願日 05.04.2005
公開番号 20070014976
公開日 18.01.2007
特許番号 7563516
特許付与日 21.07.2009
公報種別 B2
IPC
B 処理操作;運輸
32
積層体
B
積層体,すなわち平らなまたは平らでない形状,例.細胞状またはハニカム状,の層から組立てられた製品
27
本質的に合成樹脂からなる積層体
CPC
B32B 17/10018
B32B 7/02
B32B 17/10036
B32B 17/10688
B32B 17/10761
B32B 27/08
出願人 Sekisui Chemical Co., Ltd.
発明者 Matsudo Masaki
代理人 Cheng Law Group PLLC
優先権情報 2004290488 01.10.2004 JP
2005046118 22.02.2005 JP
発明の名称
(EN) Thermoplastic resin sheet and laminate
要約
(EN)

A thermoplastic resin sheet is provided which has good penetration resistance over a range from low to high temperature region and can be used as an intermediate film of a laminated glass.

The thermoplastic resin sheet has such a layered structure that a first polyvinyl acetal resin layer (A) is provided on each side of a second polyvinyl acetal resin layer (B). The first polyvinyl acetal resin layer (A) is comprised mainly of an acetalized product of polyvinyl alcohol with aldehyde (a) having 4-6 carbon atoms. The second polyvinyl acetal resin layer (B) is comprised mainly of a coacetalized product of polyvinyl alcohol with aldehyde (a) having 4-6 carbon atoms and aldehyde (b) having 1-3 carbon atoms. A polymer unit (X) derived from the aldehyde (a) and a polymer unit (Y) derived from the aldehyde (b), in total, account for at least 55% by mole while the first polymer unit (X) alone accounts for 0.5-80% by mole of the total of the coacetalized product.