Novamont S.p.a.

Alessandro Montino

Catia Bastioli

Vittorio Bellotti

Roberto Ponti

Gianfranco Del Tredici

Roberto Lombi

Gianfranco D Tredici

Hydrophobic polymers incompatible with starch containing, as a filler, a starch complex dispersed in the polymer matrix in the form of particles with numeric mean dimension of less than 3 microns, bound to the polymer matrix by coupling agents containing groups compatible with the matrix and with the complex, in which the starch complex is characterized by second-derivative IR absorption in the region of 940-952 cmare described or wherein the starch complex is bound to the polymeric matrix through reactive groups contained in the complex capable of being fixed to the polymeric matrix. The starch complex in the case of biodegradable polymers such as the aliphatic or aliphatic aromatic polyesters is formed with complexing agents different from the polymer forming the matrix and from EVOH copolymers.

Polymers of a hydrophobic nature, filled with starch complexes

Biodegradable foamed plastic material having a bulk density comprised within the range of from 5 to 13 kg/m.sup.3, comprising:

Biodegradable foamed plastic materials

The film-forming polymeric compositions described include a synthetic, thermoplastic polymer and a starchy material, with a high amylopectin content; they enable the production of films, sheets and the like having good liquid- and gas-barrier effects and improved mechanical properties.

Film-forming, starchy, polymeric composition and shaped articles,

The biodegradable polymeric compositions comprise a starch based component and a polymeric component comprising polymers of hydroxyacids or mixtures thereof with polymers deriving from ethylenically unsaturated monomers, particularly polymers of ethylene-vinylalcohol or polyvinylalcohol.

Biodegradable polymeric compositions based on starch and thermoplastic

A thermoplastic polymeric composition including starch, at least one synthetic thermoplastic polymer and a plasticiser in which the plasticiser is at least one compound selected from the group consisting of:

The material, which is usable for the production of biodegradable articles in film, sheet or fiber form, can be produced by extrusion from a molten mass including a synthetic thermoplastic polymer and a destructured starch to which a boron containing compound, such as boric acid, metaboric acid, borax and derivatives thereof has been added. Articles made of this material have improved transparency, Young's modulus and tear strength.

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Robbio Lomellina, Italy

Alessandro Montino