Abstract: A heat-crosslinkable adhesive composition comprises a polymer (A) comprising at least one hydrolysable alkoxysilane group, a silylated copolymer tackifying resin (B?), a non-silylated tackifying resin (C), and a crosslinking catalyst (D). The silylated copolymer tackifying resin comprises a repeating unit (B?1) derived from a silylated olefin monomer, in particular from a silylated (meth)acrylate monomer, and one or more repeating units (B?2) derived from olefin or diolefin monomers included in a petroleum fraction obtained by cracking naphtha and chosen from a C5 fraction, a C9 fraction, dicyclopentadiene. A self-adhesive article comprises a support layer coated with a self-adhesive layer consisting of the heat-crosslinkable adhesive composition in the crosslinked state.

Abstract: A macromolecule comprises a ring-opened polymerized product of ?-lactone monomers of formula I: and having a structure of formula IA: wherein R1 is an alkyl group having at least 8 carbon atoms. The macromolecule may be hydroxy-terminated, and may be copolymerized with other ?-lactone monomers having different substituting groups and/or with higher lactone monomers. The macromolecule may be used as a reactant to form an alkoxysilane-terminated polymer, a polyurethane, or a (co)polyester, or may be used as an elastomeric midblock in a triblock copolymer having hard end blocks, such as polylactic acid. Such triblock systems demonstrate two discreet regions having properties similar to styrene block copolymers and are therefore suitable for use as hot melt or pressure-sensitive adhesives. In some embodiments, such triblock polymers may be entirely bio-sourced and compostable.

Abstract: A heat-crosslinkable adhesive composition comprises a polymer (A) comprising at least one hydrolysable alkoxysilane group, a silylated copolymer tackifying resin (B?), a non-silylated tackifying resin (C), and a crosslinking catalyst (D). The silylated copolymer tackifying resin comprises a repeating unit (B?1) derived from a silylated olefin monomer, in particular from a silylated (meth)acrylate monomer, and one or more repeating units (B?2) derived from olefin or diolefin monomers included in a petroleum fraction obtained by cracking naphtha and chosen from a C5 fraction, a C9 fraction, dicyclopentadiene. A self-adhesive article comprises a support layer coated with a self-adhesive layer consisting of the heat-crosslinkable adhesive composition in the crosslinked state.

Abstract: A macromolecule comprises a ring-opened polymerized product of ?-lactone monomers of formula I: and having a structure of formula IA: wherein R1 is an alkyl group having at least 8 carbon atoms. The macromolecule may be hydroxy-terminated, and may be copolymerized with other ?-lactone monomers having different substituting groups and/or with higher lactone monomers. The macromolecule may be used as a reactant to form an alkoxysilane-terminated polymer, a polyurethane, or a (co)polyester, or may be used as an elastomeric midblock in a triblock copolymer having hard end blocks, such as polylactic acid. Such triblock systems demonstrate two discreet regions having properties similar to styrene block copolymers and are therefore suitable for use as hot melt or pressure-sensitive adhesives. In some embodiments, such triblock polymers may be entirely bio-sourced and compostable.