SI Group is the world’s largest producer of liquid phosphites, specialty antioxidants, and additives in nondust forms. Explore SI Group's extensive portfolio of antioxidants and specialty additives, including light stabilizers, polymer modifiers, polymerization inhibitors, and intermediates engineered to meet the performance and regulatory needs of modern markets. Antioxidants effectively mitigate oxidation, extending the service life of plastics, coatings, and adhesives. UV stabilizers and absorbers protect from the effect of ultraviolet radiation, preventing degradation and maintaining aesthetic and structural integrity. Polymer modifiers optimize incompatible polymer materials and fillers by enhancing adhesion, strength, flexibility, and processability.
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