Elf Atochem S.a.

Atofina

Jean Lebez

Jean-Michel Pierrot

Eric Radigon

Jean-Jacques Flat

Patrice Perret

Jean-Yves Chenard

Didier Vanhoye

Denis Melot

Guillaume Montignac

Cyril Wiegert

The present invention relates to crosslinkable hot-melt adhesive compositions in the form of prepolymer containing free isocyanate functional groups; the said prepolymer results from the reaction of a polyisocyanate and of a copolymer (A) of ethylene and of at least one unsaturated carboxylic acid ester and containing hydroxyl functional groups. These adhesives are crosslinked by the ambient moisture.

Adhesive compositions based on ethylene-unsaturated acid ester copolymers and containing hydroxyl functional groups

The invention relates to hot-melt adhesive (HMA) compositions which are provided in the form of a polymer containing free isocyanate functional groups, the said polymer resulting from the reaction of a polyisocyanate (A), of a polydienopolyol (B) and of a copolymer (C) of ethylene containing hydroxyl functional groups. They have a low viscosity and can thus be employed from 110&deg; C. They can be crosslinked with atmospheric moisture.

Hydroxylated polydiene based hot-melt adhesive compositions

The present invention relates to a pressure-sensitive adhesive comprising:

Pressure-sensitive adhesive which can be applied while hot

The invention is a thermofusible adhesive composition comprising:

Hot melt adhesive compositions

The present invention relates to mixtures of bitmen, of powdered rubber waste and of at least one copolymer (A) of an alpha-olefin and of at least one unsaturated epoxide, such that:

Mixtures of bitumen, of powdered rubber waste and of polymer, employed

This pressure-sensitive adhesive polymer is obtained by emulsion polymerization of the mixture of the following monomers, for a total of 100% by weight: (A) 40 to 95% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature lower than or equal to -40.degree. C.; (B) 2 to 50% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature higher than or equal to 0.degree. C.; (C) 0.5 to 6% by weight of at least one carboxylic (meth)acrylic monomer; (D) 0 to 5% by weight of at least one (meth)acrylic monomer ethoxylated with 1 to 20 moles of ethylene oxide; (E) 0.05 to 1% by weight of at least one (meth)acrylic or vinyl monomer containing a ureido group; and (F) 0 to 2% by weight of at least one acrylic or vinyl monomer carrying a sulphonate functional group, the said polymer having a glass transition temperature lower than or equal to -25.degree. C.

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Evreux, France

Jean Lebez