The present disclosure provides a primer composition. In an embodiment, the primer composition includes a functionalized polyolefin, a functionalized styrenic block copolymer containing greater than or equal to 20 wt % polymerized styrene, a solvent composition and an isocyanate component. The primer composition is suitable for use as an adhesive layer between a substrate and a polyolefin layer.

The sheet-shaped photocurable composition of the present invention includes components (A) to (D) as follows, and is in a sheet shape at 25 C. in a state before curing: Component (A): (meth)acrylic triblock copolymer, Component (B): (meth)acrylate oligomer (excluding the component (A)), Component (C): a monomer having a (meth)acryloyl group and having a specific structure, and Component (D): photoinitiator.

A method for preparing an acrylate laminating adhesive by soap-free emulsion polymerization, and an acrylate laminating adhesive prepared by soap-free emulsion polymerization. In the method, an acrylate block oligomer with emulsifiability is synthesized by using a RAFT active radical polymerization process, and an acrylate monomer is emulsified by using the acrylate block oligomer for a semi-continuous emulsion polymerization, which overcomes a defect that traditional small molecule emulsifiers tend to migrate to a surface of an adhesive film to form a weak interface layer, resulting in a decreased bonding strength, a poor water resistance and the like. Further, in the disclosure, the use of n-pentanol as a chain transfer agent could not only reduce the molecular weight of polymer, improving fluidity and laminating uniformity of the adhesive, but also reduce the surface tension of the emulsion, improving coating wettability and levelling properties of the acrylate laminating adhesive.

The present disclosure provides an adhesive composition contains a (meth)acrylic polymer (A) and a photoinitiator (B).

The present invention relates to additive compositions for controlling rheology and mechanical properties that can be used in polymerizable compositions, sealants, paints or else adhesives. These compositions provide an improvement in the control of the rheology; they have in particular a viscosity and a yield stress which can be adjusted. Owing to the nature of the constituents therein, they provide reinforcement of the mechanical properties of the formulations containing them.

The present invention relates to copolymer obtained by polymerizing a monomer mixture comprising: (a) at least one monomer selected from the group consisting of 2-octyl (meth)acrylate, 2-methylbutyl acrylate and 3-methylbutylacrylate; (b) isobornyl (meth)acrylate: (c) optionally at least one carboxyl-functional ethylenically unsaturated monomer; and (d) optionally at least one ethylenically unsaturated monomer other than (a), (b) and (c). A composition comprising the copolymer and its uses in adhesives and coatings are also provided.