... efficient flame retardants are widely used in plastic, rubber, coating etc.1. Zinc borate ZB-2335 ... rubber processing, such as PVC, PE, PP, enhance polyamide, polyvinyl chloride (PVC) fat, polystyrene polyester, epoxy resin, acid and ethylene resin,styrene butadiene rubber ... natural rubber, neoprene etc. Can also be applied to ...