公开(公告)号：AT455151T

公开(公告)日：2010-01-15

申请号：AT05748168

申请日：2005-06-02

Applicant: BASF SE

Inventor： ELDER STEWART ,  ANDRIANOV CHRISTINA ,  MISTRY KISHOR ,  PRESTON JANINE ANDREA ,  BAXTER MARK CHRISTOPHER

IPC: C08L25/14 ,  B01J13/00 ,  C08F291/00 ,  C08L33/02 ,  C08L33/12 ,  C09B67/00

Abstract: 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.