... halogen-free flame retardant. There are some formulations of XZnO.YB2O3.ZH2O, in which Zinc Borate with 3.5 ... -functional synergistic additives with antimony oxide or other halogenated flame retardants to significantly improve the flame retardant performance, remove smoke ... paper, carpet, paint etc decorative materials to improve flame retardant performance.3. Base on its chemical properties, Zinc ...