发明名称 |
POLYMERIC PARTICLES |
摘要 |
<p>Polymeric particles comprising a polymeric matrix that has been formed from a blend of monomers comprising a first monomer which is an ethylenically unsaturated ionic monomer and a second monomer which is an ethylenically unsaturated hydrophobic monomer which is capable of forming a homopolymer of glass transition temperature in excess of 50° C., wherein secondary particles are distributed throughout the matrix, in which the secondary particles comprise a hydrophobic polymer that has been formed from an ethylenically unsaturated hydrophobic monomer which is capable of forming a homopolymer of glass transition temperature in excess of 50° C. and optionally other monomers, which hydrophobic polymer is different from the polymeric matrix. Also claimed is a process for preparing particles. The particles have improved shatter resistance. Preferably the polymeric particles comprise an active ingredient, especially a colorant. Such particles combine improved shatter resistance with the ability to retain the active ingredient. The particles of the invention can be used in a variety of industrial applications, for instance in the manufacture of inks, paper and cosmetics.</p> |
申请公布号 |
EP1756184(A1) |
申请公布日期 |
2007.02.28 |
申请号 |
EP20050748168 |
申请日期 |
2005.06.02 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
ELDER, STEWART, TODD;ANDRIANOV, CHRISTINA, LIGIA;MISTRY, KISHOR, KUMAR;PRESTON, JANINE ANDREA;BAXTER, MARK CHRISTOPHER |
分类号 |
C08L25/14;B01J13/00;C08F291/00;C08L33/02;C08L33/12;C09B67/00 |
主分类号 |
C08L25/14 |
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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