Soprema

Louis Durot

Remi Perrin

Pierre-Etienne Bindschedler

Pierre Etienne Bindschedler

Rémi Perrin

Virginie Francois Barseghian

The present invention relates to a polymerisable plasticiser formed by a hydrocarbon chain, one end of which bears more than one isocyanate function, said hydrocarbon chain comprising and/or being substituted by an aromatic ring and/or an aliphatic ring and/or said hydrocarbon chain is substituted by at least two hydrocarbon chains that can comprise an unsaturation, and the number of isocyanate functions being strictly greater than 1, preferably greater than 1.2, and, more preferably, grater than 1.5 but less than or equal to 2.2. The invention also relates to liquid polyurethane resin compositions and, in particular, stable, ready-to-use liquid polyurethane resin compositions comprising said plasticiser. The invention further relates to methods for replacing all or part of the exogenous plasticiser and/or solvent in a polyurethane resin by adding said polymerisable plasticiser.

Polymerisable plasticiser, liquid polyurethane resin composition comprising same and uses thereof

The invention relates to polyurethane resin compositions and, in particular, stable, ready-to-use polyurethane resin compositions comprising: a masked polyisocyanate having formula (I), wherein B represents alkyl and A represents a group comprising a number of isocyanate functions of between 1.5 and 2.2, preferably between 1.5 and 2.1 and, more preferably, between 1.5 and 2; or a masked pre-polymer that is the product of a reaction between the above-mentioned masked polyisocyanate and a polyol having between 1.5 and 3 OH functions and a molecular mass of between 900 and 3,000 g/mol, in a ratio such that the number of NCO functions of the masked polyisocyanate in relation to the number of OH functions of the polyol is between 1.5 and 2.5 approximately; or a mixture of the aforementioned masked polyisocyanate and masked pre-polymer. The invention also relates to the use of the masked polyisocyanate in order to form a masked pre-polymer by reacting said masked polyisocyanate on a polyol, and to the use of a masked polyisocyanate and/or a masked pre-polymer in polyurethane resin compositions. 

Masked polyisocyanate and uses thereof

A polyurethane resin composition comprising a prepolymer and a polymerizable plasticizer, and which may also comprise at least one constituent chosen from the group comprising:

Stable, ready-to-use liquid polyurethane resin composition and uses thereof

Resinous monocomponent composition with improved adhesive properties, based on a bitumen/polyurethane prepolymer mixture and adapted to constitute a sealing layer or a portion of a sealing layer, characterized in that the molecules of polyurethane prepolymer comprise at least one segment or group comprising at least 30 atoms of pure hydrogenated carbon.

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Paris, France

Louis Durot