Arkema France

Frank Cogordan

Alain F Riondel

Herve W Ozeray

Isabelle Betremieux

Gregoire Herve

Grégoire Herve

Gregory A Delmas

Aurélie Pierre

Franck Moriere

Virginie Decomble

Fatoumata Camara

Hervé Ozeray

Grégory Delmas

The present invention relates to a linear or branched structured hydroxylated or carboxylated polyester resin that is free of unsaturated fatty acids, that is made from an acid component and an alcohol component, said acid component comprising at least one C4 to C6 carboxylic polyacid or anhydride, and at least one C5 to C54 carboxylic polyacid or anhydride, and with said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).

Biobased hydroxyl or carboxyl polyester resins

The present invention relates to a method for preparing a linear or branched hydroxylated and/or carboxylated polyester resin that is free of unsaturated fatty acids, comprising reacting an acid component with an alcohol component, said acid component comprising at least one C4 to C6 polycarboxylic acid or anhydride, and at least one C8 to C54 polycarboxylic acid or anhydride, and said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).

Specific method for preparing biobased polyesters

Firstly, the invention concerns an organic resin that comprises structural units in its overall composition obtained from: The invention also concerns an aqueous dispersion of said resin and a preparation process as a cross-linkable aqueous composition comprising said resin or dispersion and a polyamine. The resin is used for the preparation of cross-linked polyurethanes without the use of polyisocyanate, in particular in high performance aqueous coatings.

Organic resin bearing cyclic carbonate groups and aqueous dispersion for crosslinked polyurethanes

The invention relates to rosin-based polyurethane resins derived from hydroxylated fatty polyesters modified with rosin, where the polyesters are bio-based, The invention also relates to aqueous dispersions of these resins, and the use of these resins in aqueous coatings.

Aqueous dispersions of polyurethane resins based on rosin

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Paris, France

Frank Cogordan