Abstract: Plastisol compositions having a two-resin interpenetrating polymer network (IPN) are disclosed. The compositions begin with blocked isocyanate grafted acrylic polymer, blocked isocyanate urethane prepolymer, plasticizer, optionally pigment, and optionally thixotropic agent. When subjected to a thermal cure, the isocyanate groups on the acrylic polymer and urethane prepolymer both become unblocked and both react with the crosslinking agent to form an interpenetrating acrylic-polyurethane network. The two-resin IPN offers improved storage stability, hand-feel characteristics, and processing properties for textile printing among other uses. Preferably these plastisol compositions are essentially free of polyvinyl halides and phthalates restricted for regulatory reasons.

Abstract: Plastisol compositions having a two-resin interpenetrating polymer network (IPN) are disclosed. The compositions begin with blocked isocyanate grafted acrylic polymer, blocked isocyanate urethane prepolymer, plasticizer, optionally pigment, and optionally thixotropic agent. When subjected to a thermal cure, the isocyanate groups on the acrylic polymer and urethane prepolymer both become unblocked and both react with the crosslinking agent to form an interpenetrating acrylic-polyurethane network. The two-resin IPN offers improved storage stability, hand-feel characteristics, and processing properties for textile printing among other uses. Preferably these plastisol compositions are essentially free of polyvinyl halides and phthalates restricted for regulatory reasons.

Abstract: Plastisol ink compositions are disclosed containing (meth)acrylate polymer, non-phthalate ester plasticizers, and optionally, pigment, filler, thixotropic agent, and other additives. The plasticizers are separated into lower and higher solvating plasticizers, and the composition for handling and storage is separated into two masterbatches with the (meth)acrylate polymer mixed with the lower solvating plasticizer. The plastisol can be used an ink of various colors for use in application to textiles. The plastisol ink compositions avoid polyvinyl chloride polymer resins and phthalate plasticizers conventionally employed in plastisol inks.