Lubricant for use in paper coating and method for producing the same
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United States of America Patent
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Oct 11, 1988
Grant Date -
N/A
app pub date -
Nov 19, 1986
filing date -
Nov 20, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lubricant for paper coating compositions. The lubricant is an aqueous dispersion of an ester compound of the formula (I): ##STR1## wherein R is an alkyl or alkenyl group having 3 or more carbon atoms or an alkyl or alkenyl group having a hydroxyl group, and R' is an alkyl or alkenyl group having 4 or more carbon atoms, provided that the total number of carbon atoms of R and R' is 15 or more. The lubricant is made by emulsifying or dispersing the ester compound with a high-speed agitation emulsifying device or piston-type high pressure emulsifying device in the presence of water and nonionic and anionic surfactants or the salt of a copolymer of an .alpha.,.beta.-unsaturated dibasic acid or its monoester with styrene.
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