发明授权
US5047494A Castable polyurethane elastomers chain extended with 2,3-bis(hydroxymethyl)bicyclo[2,2,1]heptane 失效
用2,3-双(羟甲基)双环[2,2,1]庚烷延伸的可浇注聚氨酯弹性体链

Castable polyurethane elastomers chain extended with
2,3-bis(hydroxymethyl)bicyclo[2,2,1]heptane
摘要:
A castable polyurethane elastomer comprising the polymerization reaction product of a polyurethane prepolymer and 2,3-bis(hydroxymethyl) bicyclo [2,2,1] heptane as a chain extender. The elastomer has an advantageously low rebound property, which makes it particularly useful in shock absorber and anti-vibration mounting applications.
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