公开(公告)号：KR1020010013416A

公开(公告)日：2001-02-26

申请号：KR1019997011417

申请日：1998-06-02

Applicant: 코닌클리즈케 디에스엠 엔.브이.

Inventor： 쉬렌베르그루돌프루시엔 ,  스멜트하롤트잔 ,  드보스로엘로프프란시스쿠스게라르두스마리아

IPC: C08J9/28

CPC classification number: C08J9/28 ,  C08J2201/052 ,  C08J2201/0542 ,  C08J2323/02

Abstract: The invention relates to a process for preparing porous polyolefin particles. The process according to the invention is characterized in that it comprises the following steps: 1) dissolving at least one crystallizable polyolefin in a solvent, in the absence of a nucleating agent; 2) dispersing the polyolefin solution obtained in a non-solvent in the presence of a surfactant, at a temperature that is higher than the crystallization temperature of the polyolefin in the polyolefin solution; 3) cooling the multi-phase system obtained with stirring, at a rate of between 0.05 and 10 °C/min to a temperature that lies below the crystallization temperature of the polymer in the polymer solution, so that firm polyolefin particles are formed; 4) separating the polyolefin particles; 5) drying the polyolefin particles. The invention also relates to a porous polyolefin particle with a high effective loadability and a narrow particle size distribution.

Abstract translation: 本发明涉及一种制备多孔聚烯烃颗粒的方法。 根据本发明的方法的特征在于其包括以下步骤：1）在不存在成核剂的情况下将至少一种可结晶聚烯烃溶解在溶剂中; 2）在表面活性剂存在下，在高于聚烯烃溶液中的聚烯烃的结晶温度的温度下分散在非溶剂中获得的聚烯烃溶液; 3）以0.05〜10℃/分钟的速度搅拌得到的多相体系冷却到聚合物溶液中聚合物结晶温度以下的温度，形成坚固的聚烯烃粒子; 4）分离聚烯烃颗粒; 5）干燥聚烯烃颗粒。 本发明还涉及具有高有效负载能力和窄粒度分布的多孔聚烯烃颗粒。