Abstract
AbstractIn emulsion polymerized acrylonitrile‐butadiene‐styrene (ABS), an antioxidant system is added to the latex prior to coagulation. The antioxidant protects the polymer against the high temperatures encountered during drying and processing. Traditionally, hindered phenols have been used in combination with a co‐stabilizer, such as tris‐nonylphenylphosphite (TNPP) or dilaurylthiodipropionate (DLTDP). This paper discusses an antioxidant stabilization system based entirely on hindered phenol chemistry. This system provides excellent performance compared to the traditional systems without the presence of a phosphite or sulfur based costabilizer. In addition, the new antioxidant system is a liquid allowing for ease of emulsification and handling.
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