British American Tobacco (investments) Limited

British American Tobacco Limited

Yahia Lemmouchi

Philippe Dubois

Robert Quintana

Olivier Persenaire

Leila Bonnaud

Andrew Gordon Davis

Barry Dimmick

Andreas Ullrich

Martin Dauner

Christoph Rieger

The present invention relates to filter material for inclusion in a smoking article, said filter material comprising a base material comprising or made from fibers having a first diameter or mean diameter, and fine fibers having a diameter or mean diameter which is smaller than the first diameter, wherein the filter material comprises more than 10% by weight and/or by volume fine fibers or wherein the diameter or mean diameter of the fine fibers is between about 1.0 &#x3bc;m and about 1.5 &#x3bc;m. The invention also relates to filters or filter elements comprising the filter material, smoking articles comprising the same, and use of the filter material in smoke filtration.

Filter materials and filters made therefrom

The invention relates to filter material for inclusion in the filter or filter element of a 5 smoking article, said filter material comprising polylactide fibers and a plasticizer. The invention also relates to filters or filter elements comprising the filter material, and smoking articles comprising the same.

Filter material comprising polylactide fibres

The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibers. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copolymers (PLA-grafted water-soluble polymers) for the compatibilization of PLA and water-soluble polymers. Such reactive compatibilization of immiscible polymer blends is achieved in such a way that main blend components are covalently bonded. In addition, such reactive compatibilization can be carried out by reactive extrusion.

Blends of a polylactic acid and a water soluble polymer

The present invention relates to compositions comprising a blend of cellulose acetate and a water soluble polymer. In some embodiments, the composition is water dispersive and/or biodegradable. Embodiments of the invention also relate to processes for preparing such compositions, and to materials and products including such compositions.

Cellulose acetate compositions

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London, United Kingdom

Yahia Lemmouchi