Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚合剂主要有两组份构,组份Ⅰ为多羟基化合物,如苯醚型酚醛脂为主要份;
Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚合剂主要有两组份构,组份Ⅰ为多羟基化合物,如苯醚型酚醛脂为主要份;
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