Bostik Sa

Olivier Laferte

David Goubard

Herveline Troadec

Stephane Fouquay

Lahoussaine Lalouch

Jean Francois Chartrel

Regis Guillotte

Claire Garnier

Stéphane Fouquay

Jean-Francois Chartrel

Urszula Duplaga

Boris Colin

Régis Guillotte

Jean-Marie Bordat

Clement Bellini

Bruno Delmotte

Jean François Chartrel

The invention relates to a process for hot application of an adhesive composition () on a support (), by means of a system comprising: a nozzle () for applying the adhesive composition (), a line () for supplying the nozzle () with the adhesive composition () to be applied in fluid form, a mixer () positioned in the line () for the homogeneous mixture of the main components of the adhesive composition before its application; the applied adhesive composition () including as main components: a silylated prepolymer, a compatible tackifying resin; the adhesive composition comprising a cross-linking catalyst; the process comprising: supplying the line () with the silylated prepolymer separated from the cross-linking catalyst, the mixing of the cross-linking catalyst with the main components by means of the mixer (), the hot application of the mixed adhesive composition () onto a support ().

Process for hot application of a silylated adhesive composition

The present invention relates to a hot melt adhesive composition having an enthalpy of crystallization below 5 J/g and comprising: a) at least 60% by weight of a composition a) comprising: —at least one copolymer A having a needle penetration higher than 15 dmm; —at least (co)polymer B having a needle penetration lower than 15 dmm; b) from 0% to 30% by weight of at least one tackifying resin.

Hot melt adhesive composition

1) A heat-crosslinkable adhesive composition, comprising: 2) A self-adhesive article comprising a support layer coated with a self-adhesive layer consisting of the adhesive composition in the crosslinked state.

Compositions which are cross-linkable by heating, and corresponding self-adhesive articles

A self-adhesive article comprises an adhesive layer comprising a crosslinked adhesive composition, which comprises at least one polysilylated polymer having a number-average molar mass (Mn) of at least 20000 g/mol, wherein the at least one polysilylated polymer comprises a polyether and/or polyurethane main chain and at least two hydrolysable silylated end groups, said silylated end groups being attached to the main chain of the polymer by a urethane or ether function (referred to as a connector group); at least one tackifying resin having an average hydroxyl number of less than or equal to 100; and at least one crosslinking catalyst, excluding any monosilylated polymer.

Self-adhesive composition for bonding substrates with low surface energy

The present invention provides a process for the synthesis of silylated polyurethanes, comprising three sequential steps, a step (i) of preparing NCO-terminated polyurethane, a step (ii) of partial grafting of the NCO functions with silane functions and a step (iii) of total grafting of the residual NCO functions with functions that react with the NCO functions by means of polyfunctional compounds. The present invention also provides a silylated polyurethane composition that can be obtained by means of the process according to the invention, an adhesive composition comprising said silylated polyurethane composition and a self-adhesive item obtained from the adhesive composition according to the invention.

Process for the synthesis of silylated polyurethanes and silylated polyurethane composition

A multicomponent adhesive composition comprises a composition A and a composition B. Composition A comprises at least one silyl polymer comprising at least one hydrolyzable alkoxysilane group and at least one tackifying resin. Composition B comprises at least one catalyst and at least one compound C chosen from a compound C1 with a number-average molecular mass ranging from 300 g/mol to 500 000 g/mol; and a compound C2 with a vapor pressure at 20&#xb0; C. of greater than or equal to 0.08 kPa; and mixtures thereof. The composition A:composition B mass ratio ranges from 99.98:0.02 to 60:40. The total content of catalyst ranges from 0.01% to 10% relative to the total weight of said adhesive composition.

Adhesive multicomponent composition and uses thereof

A hot-melt adhesive composition comprises a mixture of silylated polymers, a tackifying resin and a catalyst, in specific contents, having self-adhesive properties after crosslinking to moisture. A self-adhesive article comprises a support layer and at least one self-adhesive layer obtained after crosslinking to the moisture in the adhesive composition according to the invention. The self-adhesive article can be used to bond low-energy substrates, in particular plastic substrates, notably thermoplastic substrates having low surface energy.

Self-adhesive composition for the bonding of substrates with low surface energy

A process for hot application of an adhesive composition () on a support (), by means of a nozzle () applying the adhesive composition (), a line () supplying the nozzle () with the adhesive composition () to be applied in fluid form, a mixer () positioned in the line () for the homogeneous mixture of the main components of the adhesive composition before its application; the applied adhesive composition () including a silylated prepolymer, a compatible tackifying resin; the adhesive composition having a cross-linking catalyst; the process involving: supplying the line () with the silylated prepolymer separated from the cross-linking catalyst, the mixing of the cross-linking catalyst with the main components by the mixer (), the hot application of the mixed adhesive composition () onto a support ().

Two-component lamination adhesive, having a &#x2014;NCO component obtained by reacting a polyisocyanate with a composition of diols, a multilayer film comprising an adhesive layer composed of said lamination adhesive, a process for the preparation of said film, and use of said film in the manufacture of flexible packagings.

Two-component lamination adhesive of renewable origin

The present invention relates to a polyurethane-based two-component adhesive composition. The invention also relates to the manufacture of membrane-type filtration cartridges using the two-component adhesive composition according to the invention.

Polyurethane-based two-component adhesive composition

The present invention relates to a self-adhesive article comprising a support layer of foam or similar type and an adhesive layer obtained by cross-linking an adhesive composition. The present invention also relates to a mixture of at least two polymers suitable for use for the manufacture of the self-adhesive article as well as an adhesive composition comprising said mixture of at least two polymers according to the invention.

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Trosly Breuil, France

Olivier Laferte