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US5231119A Crystalline olefin polymers and copolymers in the form of spherical particles at high porosity 失效
具有高孔隙率的球形颗粒形式的结晶烯烃聚合物和共聚物

Crystalline olefin polymers and copolymers in the form of spherical
particles at high porosity
摘要:
Crystalline olefin polymers and copolymers in the form of spherical particles having porosity (expressed in percentage of voids) higher than 15%, with more than 90% of the pores having a pore diameter greater than one micron. These polymeric particulate materials find many applications, including, e.g., the preparation of masterbatches containing significant quantities of additives and/or pigments.
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