benzylic

1.Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.

铸造用的聚氨酯粘剂主要有两组份构成，组份Ⅰ基化物，如苯醚型酚醛树脂主要成份；

2.Benzylic ether phenolic resin is one of the main components of foundry polyurethane binder; its structure and preparation condition determine the performances of polyurethane binder.

苯醚型酚醛树脂是铸造用聚氨酯粘剂的主要成份之一,它的结构及成工艺条件决定了该类粘剂性能。