Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚氨酯粘合剂
要有两组份构成，组份Ⅰ
多羟基化合物，如苯醚
要成份；
Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚氨酯粘合剂要有两组份构成，组份Ⅰ多羟基化合物，如苯醚要成份；
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