Barrier coatings for flexible packaging based on hyperbranched resins

Effect of BOPET film surface treatments on adhesion performance of biodegradable coatings for packaging applications

“…This technology allows to functionalize a polymeric substrate applying other materials which are different by chemistry, rheology and thermal and structural characteristics and then to overcome all the constraints related to the functionalization by other process techniques such as multilayer co-extrusion [2,3]. http Nitrocellulose and PVdC (Polyvinylidene chloride) copolymer are the most common surface coatings used, even if several synthetic resins, acrylics, biological and natural compounds based on cellulose, polysaccharides or proteins, are used for varnishing the web and to improving barrier formation and heat sealing [1,2,[4][5][6][7][8]. Several innovative coatings are proposed in the literature in order to functionalize polymeric substrates and to promote natural and eco-compatible solutions [9][10][11][12].…”

Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid

“…Hult and co-workers [21][22][23][24][25] examined the possibility of using acrylated aliphatic hyperbranched polyesters as the oligomeric component in UV-curable coatings. The hyperbranched acrylates have lower viscosity than conventional polyester acrylates of similar molar mass.…”

A novel sulfonated dendritic polymer as the acidic component in proton conducting membranes

“…The extensive branching results in few, or no, entanglements, a globular shape, and properties greatly dependent on the nature of the numerous end-groups. The unique properties of dendritic polymers have resulted in several proposed applications ranging from medical devices [24] to photonic materials [25], coatings [26,27], barrier materials [28] and rheological additives [29]. The possibility to obtain tailored barrier properties, as well as the introduction of cross-linking points and other functional groups to a dendritic polymer by end-group modification, suggests that they have potential as polymer electrolyte fuel cell membrane components.…”