Struktol WB 300 Fatty acid esters Struktol Plasticizers Aminoplaste & Phenoplastes (UF, MUF...) Rubber - Elastomer (Chloroprene, Butyl …) STRUKTOL ® WB 300 PLASTICIZERS Synthetic or fatty acid esters. STRUKTOL ® ester plasticizers are special purpose synthetic plasticizers mainly used in compounds based on nitrile rubber. The decreased raw compound viscosity facilitates further processing. STRUKTOL ® WB 300 is used in NBR-, ECO- and ACM to improve oil and fuel resistance. Owing to its incompatibility with aliphatic hydrocarbons, minerals, oils and greases, STRUKTOL ® WB 300 will not leach from vulcanizates, which means that hardly any hardening or shrinkage of the vulcanized rub-ber is experienced. It is highly compatible with phenolic resin modified NBR/PVC polyblends. It is in-compatible with aliphatic hydrocarbons, oils and greases. STRUKTOL ® WB 300: 0.5 - 40 phr Fatty acid ester. Used as a plasticizer in nitrile rubber compounds. Provides low surface resistance. Improves oil and fuel resistance. Possesses incompatibility with aliphatic hydrocarbons, minerals, oils and greases and high compatibility with phenolic resin modified NBR/PVC polyblends. Use level: 0.5-40 phr.