Bostik Sa

Medherant Limited

David Goubard

Olivier Laferte

Herveline Troadec

Nicolas Sajot

Jean Francois Chartrel

Jean-François Chartrel

Stéphane André Fouquay

David Haddleton

Ciaran O'Driscoll

Sylwia Poivet

Robert John Haeger

Johan Gerrit Jan De Jonge

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 relates to a heat-crosslinkable adhesive composition comprising: &#x2014;from 20% to 84% by weight of composition (A); &#x2014;from 15% to 79% by weight of a compatible tackifying resin (B), &#x2014;from 0.01% to 5% by weight of a crosslinking catalyst (C). The invention also relates to a self-adhesive item obtained by preheating said composition, coating on a support layer, then crosslinking by heating.

Heat-crosslinkable adhesive composition

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

The invention relates to a silyl-containing polymer that is used, together with a tackifying resin to form an adhesive composition capable of storing and delivering drugs to the skin of a user. Typically the composition is formed into a patch which shows excellent adhesion to the skin even when drugs and other additives are dissolved into the composition.

Drug delivery composition containing silyl polymers

The invention relates to the use of an adhesive composition comprising at least one silyl-containing polymer, at least one compatible tackifying resin and at least one catalyst, to make a breathable self-adhesive article. The invention also relates to a breathable self-adhesive article comprising at least one breathable substrate coated with a breathable adhesive layer. The invention also relates to a pressure-sensitive adhesive composition.

Breathable self-adhesive articles

The invention relates to a method for cross-linking a cross-linkable adhesive composition without solvent on a film, comprising driving and/or guiding said film in a climatic chamber, by a Caroll-type drive or guide. The invention also relates to a climatic chamber comprising a Caroll-type drive or guide. The invention also relates to a process for manufacturing a self-adhesive article comprising at least a substrate and an adhesive layer, said process comprising the steps of: a) conditioning an adhesive composition at a temperature of between 20 and 160&#xb0; C.; b) coating the adhesive composition b1) onto at least a part of the substrate or b2) onto a non-sticking support; submitting the article obtained at step b) to a controlled atmosphere. The invention also relates to self-adhesive articles having high coating weights and to processes for bonding them.

Cross-linking method and associated device

The present invention relates to a hot-melt pressure-sensitive adhesive (HMPSA) composition. The composition includes: a) 25 to 50% of a styrene block copolymer chosen from the group comprising SIS, SIBS, SEBS and SEPS block copolymers; b) 35 to 75% of a compatible tackifying resin having a softening temperature of between 80 and 150&#xb0; C. and an acid number of less than 20; and c) 0.5 to 20% of one or more carboxylic acids, the hydrocarbon chain of which includes 6 to 22 carbon atoms. The present invention also relates to a multilayer system including an HMPSA layer, a printable support layer, and an adjacent protective layer. Further, the present invention also includes a corresponding self-adhesive label and process for recycling a labeled article which entails debonding of the label by immersing the article in a hot basic aqueous solution.

HMPSA for removable self-adhesive label

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.

Self-adhesive article with foam support

The invention relates to the use of an adhesive composition to provide a bonding in a wet environment. The invention also relates to a method for providing a bonding in a wet environment.

Use of an adhesive composition to provide a bonding in a wet environment

A hot-melt pressure-sensitive adhesive (HMPSA) composition comprising (a) 25 to 50% of one or more styrene block copolymers SBS, SIS, SIBS, SEBS or SEPS; (b) 35 to 75% of one or more compatible tackifying resins that are liquid or have a softening temperature below 150&#xb0; C.; and (c) 1 to 20% of one or more supramolecular polymers obtained by reaction between 1-(2-aminoethyl)-2-imidazolidone and a fatty acid composition comprising 51 to 100% of one or more dimers and/or trimers of fatty acids and 0 to 49% of one or more monomers of fatty acids. A multilayer system including the HMPSA, an adjacent printable support layer, made of paper or a polymer film, and a protective layer adjacent is also provided. The multilayer system may be used in a self-adhesive label.

HMPSA for debondable self-adhesive label

A hot-melt adhesive composition intended to form a film: A film for hot-melt adhesive product constituted by a hot-melt adhesive material of such a composition. A ready-to-use hot-melt adhesive product and its production, said hot-melt adhesive product having a coating constituted by such a film.

Hot-melt adhesive composition intended to form a film suitable for wrapping a hot-melt adhesive product, and its use

Hot-melt pressure-sensitive adhesive (HMPSA) composition is disclosed comprising: Also disclosed are a multilayer system comprising an HMPSA layer, a printable support layer and an adjacent protective layer. A self-adhesive label and process for recycling a labeled article with debonding of said label by immersing the article in a hot basic aqueous solution are also disclosed.

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Compiegne, France

David Goubard