US 6,982,296 B2
PVB film containing a plastifying agent
Uwe Keller, Siegburg (Germany); and Holger Stenzel, Hennef (Germany)
Assigned to Kuraray Specialities Europe GmbH, Frankfurt (Germany)
Appl. No. 10/481,238
PCT Filed Jun. 19, 2002, PCT No. PCT/DE02/02231
§ 371(c)(1), (2), (4) Date Aug. 12, 2004,
PCT Pub. No. WO02/102591, PCT Pub. Date Dec. 27, 2002.
Claims priority of application No. 101 29 422 (DE), filed on Jun. 19, 2001.
Prior Publication US 2004/0249068 A1, Dec. 09, 2004
Int. Cl. B32B 9/04 (2006.01)
U.S. Cl. 524—315 16 Claims
 
1. A plasticized foil based on a partially acetalized polyvinyl alcohol and suitable as an intermediate layer in a laminated safety glass, comprising:
a) 60–85% by weight of partially acetalized polyvinyl alcohol,
b) 14–39% by weight of a plasticizer, and
c) 1–10% by weight of one or more non-ionic surfactants as an additive increasing the solubility of the plasticizer in the partially acetalized polyvinyl alcohol, wherein all weight percents are based on the total foil.