EP 0986602 A1 20000322 - PROCESS FOR PREPARING POROUS POLYOLEFIN PARTICLES
Title (en)
PROCESS FOR PREPARING POROUS POLYOLEFIN PARTICLES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PORÖSEN POLYOLEFINPARTIKELN
Title (fr)
PROCEDE SERVANT A PREPARER DES PARTICULES POREUSES DE POLYOLEFINES
Publication
Application
Priority
- NL 9800321 W 19980602
- NL 1006235 A 19970605
- NL 1007333 A 19971023
Abstract (en)
[origin: WO9855540A1] 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 DEG 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.
IPC 1-7
IPC 8 full level
A61K 47/32 (2006.01); C08J 3/14 (2006.01); C08J 9/28 (2006.01)
CPC (source: EP KR)
C08J 9/28 (2013.01 - EP KR); C08J 2201/052 (2013.01 - EP); C08J 2201/0542 (2013.01 - EP); C08J 2323/02 (2013.01 - EP)
Citation (search report)
See references of WO 9855540A1
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9855540 A1 19981210; AU 8039498 A 19981221; CN 1265690 A 20000906; EP 0986602 A1 20000322; JP 2002503281 A 20020129; KR 20010013416 A 20010226; NL 1007333 C1 19990427
DOCDB simple family (application)
NL 9800321 W 19980602; AU 8039498 A 19980602; CN 98807950 A 19980602; EP 98928644 A 19980602; JP 50213799 A 19980602; KR 19997011417 A 19980602; NL 1007333 A 19971023