TWO-COMPONENT SOLVENT-FREE POLYURETHANE ADHESIVES

摘要

A two-component solvent-free polyurethane laminating adhesive for flexible packaging, including a First Component and a Second Component is provided. The First Component, which acts as a resin, includes a first vegetable oil-based Polylol A in an amount from (20) to (40) weight percent, a second vegetable oil-based Polylol B in an amount from (0.5) to (5) weight percent, and a Polyisocyanate C in an amount from (60) to (74) weight percent. The Second Component, which acts as a hardener, includes a first vegetable oil-based Polylol A in an amount from (87) to (99) weight percent, and a Polyol E in an amount from (0.5) to (5) weight percent. The first vegetable oil-based Polylol A is preferably a hydroxylated castor oil, and the second vegetable oil-based Polylol B is preferably hydroxylated linseed oil.