Process for preparing resin composition for coloring and a resin composition for coloring
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United States of America Patent
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Feb 16, 1999
Issued Date -
N/A
app pub date -
Sep 19, 1997
filing date -
Feb 25, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A process is provided for preparing a resin composition for coloring which comprises the steps of a phase replacement and dehydration of a pigment (a); water (b); a thermoplastic resin (c), an aqueous dispersion or solution of a thermoplastic resin (d) or an aqueous compound (e) in a twin screw extruder. Also, there is provided a resin composition for coloring prepared by such a process. It is possible to efficiently manufacture a resin composition for coloring (master batch) which has excellent pigment dispersibility and which is capable of uniform coloring without causing color unevenness.
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