UV-curable acrylic resins for PSAs

BASF Corporation has developed a category of adhesive raw materials for self-adhesive products. These raw materials provide a combination of the attrartive coating technology of SIS/SBS hot melt adhesives with improved visual appearance and heat resistance of solvent-borne or waterborne acrylic adhesives. These are known as acResins. [Pg.31]

FIGURE 3.4 Chemical grafting reaction of acrylic polymer backbone with photoreactive groups in acResins using UV curing technology [Pg.32]

The chemical principles of functioning of acResin UV are quite unlike other UV acrylics. To elaborate, an acResin UV is already a polymeric raw material which achieves further crosslinking by exposure to UV light. This is different from other UV acrylics used as adhesive raw materials which consist of mixtures of oligomers with monomers and photoinitiators. These mixtures react after being coated onto a carrier through a free radical polymerisation of double bonds. [Pg.32]

FIGURE 3.5 Tailoring the adhesion properties of acResin DS3532 to high (deep freeze labels) and low UV (removable labels) C-dose [Pg.33]

Source BASF Corp., Charlotte, NC, UV-Curable Acrylic Hot Melts for PSAs [Pg.33]

Big Chemical Encyclopedia