Polystyrene binders

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 25/04 (2006.01) C08K 5/10 (2006.01) C08K 5/103 (2006.01) C08L 25/06 (2006.01) C09D 125/04 (2006.01) C09D 125/06 (2006.01) C09J 125/04 (2006.01) C09J 125/06 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2229216

The invention concerns polystyrene binders modified by fats, in particular esters of fatty acids or fatty alcohols, in particular triglycerides of higher fatty acids, preferably natural fats and oils. The fats can be added to the binder in high concentrations without impairing the binding properties. The addition of these fats is advantageous as concerns the wetting properties, waterproofness and above all hardness. In particular, dispersion adhesives, hot-melt adhesives and sealing compounds can be improved on the basis of the binders according to the invention.

L'invention concerne des liants au polystyrène, modifiés par des graisses. Les graisses utilisées sont notamment: des esters d'acides gras ou d'alcools gras, notamment des triglycérides d'acides gras supérieurs, de préférence des graisses et des huiles naturelles. Ces graisses peuvent être adjointes au liant dans des concentrations élevées, sans que les propriétés de liaison s'en trouvent altérées. Cette adjonction renforce les propriétés d'imprégnation, de résistance à l'eau et avant tout de dureté. Ces liants permettent d'améliorer avant tout des matières collantes à dispersion, des colles à fusion et des matériaux d'étanchéité.

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