The unsaturated polyester was a good plasticizer for NBR and compatible to NBR, and it could partly replace liquid esterplasticizer.
不饱和聚酯是一种良好的NBR增塑剂，与nbr的相容性良好，可部分替代液体酯类增塑剂。
2
Plasticizer DOTP was prepared from ethylene glycol residue (major component is PET low polymer) using single step process in which alcoholysis and ester interchange were combined.