Process for the mass pigmenting of rigid polyvinyl chloride and polyolefins
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United States of America Patent
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Dec 9, 1980
Grant Date -
N/A
app pub date -
May 10, 1979
filing date -
May 18, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for pigmenting polyolefins and rigid polyvinyl chloride, which comprises the use of perylenetetracarboxylic acid diimide pigments of the formula ##STR1## wherein R.sub.1 represents an aliphatic or cycloaliphatic radical of at least 12 carbon atoms and R.sub.2 represents hydrogen or an aliphatic or cycloaliphatic radical. These pigments are exceptionally suitable for pigmenting polyolefins and rigid polyvinyl chloride.
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