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HS-CODE
28-
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Detailed Description
repeated-HNCO-O-groups of resin, usually by many isocyanate, polyols polymer or aromatic 2 amine, etc. By gradually addition polymerization and into. Because of polyurethane contains strong polarity carbamate as ester group, adjust formula NCO/OH proportion, can be produced polyurethane and thermoplastic polyurethane thermosetting of different products. According to the molecular structure of the linear and size can be divided into two. Shape structure due to different crosslinking density, can present hard, soft or somewhere in between performance, has high intensity, the high wear resistance and resistance to solvents etc. Characteristics.
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