C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/9235
C08K 5/10 (2006.01) B32B 17/10 (2006.01) C08K 5/103 (2006.01) C08K 5/12 (2006.01) C08L 29/04 (2006.01) C09J 7/00 (2006.01)
Patent
CA 1202136
ABSTRACT OF THE DISCLOSURE: The present invention is concerned with foils made of partially acetalised polyvinyl alcohol, especially foils formed of polyvinyl butyral. These foils contain, as platicizers, esters of aroma-tic carboxylic acids whose ester components can possess up to 10 C-atoms, alone, or as mix- tures, or mixtures formed of these esters with esters formed of aliphatic carboxylic acids and glycols, chiefly di-, tri- or tetraethyleneglycol. These esters may be worked into the partially acetalised polyvinyl alcohol foils in higher pro- portions than the hitherto known plasticizers, without being exuded or influencing disadvantageously other important properties of the foils. They have the additional advantage that the laminated panes produceable therefrom possess a lower capacity for water uptake than hitherto known laminated glasses.
407413
Beckmann Rolf
Schaaf Hans-Werner
Spielau Paul
Dynamit Nobel Aktiengesellschaft
Robic Robic & Associes/associates
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