发明名称 |
Method for adjusting the particle size of popcorn polymers during popcorn polymerization |
摘要 |
The particle size of popcorn polymers is established during the popcorn polymerization by a process in which reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent are polymerized in the absence of oxygen and polymerization initiators at up to 200° C. and in which the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 mum to 10 mm by passing an inert gas stream into the reaction mixture, and popcorn polymers having a mean particle diameter of from >400 mum to 1500 mum are used as beverage clarifiers, antidiarrheal drugs and disintegration accelerators for tablets.
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申请公布号 |
US6677417(B2) |
申请公布日期 |
2004.01.13 |
申请号 |
US20020220278 |
申请日期 |
2002.09.09 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MEFFERT HELMUT;BERTLEFF WERNER;KERBER MICHAEL;SPANG PETER |
分类号 |
C08F2/00;C08F2/02;C08F2/04;C08F2/22;C08F26/00;C08F26/06;(IPC1-7):C08F26/08 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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