A light colour 422 resin with high softening point and reasonable acid value was synthesized directly from pine oleoresin.
以松脂为原料直接合成一种色泽浅、软化点高、酸值合格的4 2 2树脂。
The polyester resin synthesized by the said invented method is high in glass state temperature, high in softening point, good in storage stability and its weatherability is raised.
本发明所述方法合成的聚酯树脂玻璃化温度高，软化点高，贮存稳定性好，耐候性提高。
The polyester resin synthesized by the said invented method is high in glass state temperature, high in softening point, good in storage stability and its weatherability is raised.
本发明所述方法合成的聚酯树脂玻璃化温度高，软化点高，贮存稳定性好，耐候性提高。
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