Deinking wastepaper using reaction products of castor oil with an alkoxylated material
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United States of America Patent
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Apr 9, 1996
Grant Date -
N/A
app pub date -
Oct 19, 1993
filing date -
Oct 19, 1993
priority date (Note) -
Expired
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Abstract
Wastepaper containing printing ink is refined in the presence of the reaction products of castor oil with an alkoxylated fatty acid, alcohol, amine, amide, phosphate ester, polyhydroxy alcohol, or sorbitan, and the detached printing ink particles are subsequently removed from the paper stock suspensions by flotation or washing.
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