Production process of ABS resin, ABS resin, and ABS-polycarbonate resin composition making use of the same
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United States of America Patent
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May 21, 2002
Grant Date -
N/A
app pub date -
May 22, 1997
filing date -
May 31, 1996
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Abstract
A process is disclosed for the continuous production of an ABS resin. The polymerization step comprises at least two substeps, one being a first-stage substep of forming particles of the rubbery polymer and the other a second-stage substep of adjusting the particle sizes of the particles. The first-stage substep is conducted in a polymerization system making use of a plug flow reactor or a batch polymerization reactor, and conducts polymerization at least until the particles are formed in the polymerization mixture. The second-stage substep increases a converted amount of the monomer component into the polymer compared with that in the particle forming substep and makes the particles smaller. A polycarbonate-ABS resin composition is also disclosed.
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