ABS is also created, albeit less commonly, by a patented process … ABS plastic attains these physical attributes through the initial creation process. ABS plastic is heat-resistant, lightweight and impact-resistant. Each one of these monomers serve to impart an advantage to ABS: acrylonitrile provides chemical and thermal stability, butadiene increase toughness and impact strength, and styrene gives the plastic a nice and glossy finish. By polymerizing styrene and acrylonitrile in the presence of polybutadiene, chemical “chains” attract each other and bind together to make ABS stronger. ABS is most commonly polymerized through the process of emulsion (the mixture of multiple products that don’t typically combine into a single product). There are two types: one suited for extrusion molding and one for injection molding. Acrylonitrile butadiene styrene, otherwise known as ABS plastic, is a lightweight material popularly used in children's toys. A well known example of an emulsified product is milk. This amorphous blend is made up of acrylonitrile, butadiene, and styrene in varying proportions. LEGO blocks are made from ABS plastic because it is so light and durable. Acrylonitrile Butadiene Styrene (ABS) is a terpolymer, or a polymer composed of three different monomers.