Polyvinylbutyral interlayer sheet with improved adhesion to...

Details Polyvinylbutyral interlayer sheet with improved adhesion to... Polyvinylbutyral interlayer sheet with improved adhesion to...

C - Chemistry, Metallurgy

08

K

C08K 3/00 (2006.01) C08K 5/098 (2006.01)

Patent

CA 2494021

The present invention is an improved PVB composition comprising an adhesion control agent which is a mixture of potassium and magnesium salts in a ratio of from about 0.05:1 to about 5:1, by weight, potassium salts to magnesium salts. The present invention also describes a method for improved control of adhesion of PVB to glass.

La présente invention concerne une composition de polyvinybutyral (PVB) améliorée, comprenant, comme agent d'adhésion, un mélange de sels de potassium et de magnésium, dans un rapport massique d'environ 0,005:1 à environ 5:1 entre les sels de potassium et les sels de magnésium. L'invention concerne également un procédé permettant de mieux assurer l'adhésion du PVB au verre.

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