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US 3,941,608 AGranted
Flow agent for ink systems
AssigneeFrye Copysystems, Inc.
InventorsGerry H. Ehrhardt, Ronald L. Reeves
Life of this patent
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Abstract
An improved dispersant and flow agent for ink systems formed from a selectively oxidized linear unsaturated hydrocarbon having a carbon to carbon terminal double bond and a process for forming the same.
Claims6
A method forming an improved dispersant/flow agent for mixtures of finely divided solid materials in liquifiable vehicles comprising the steps of
- oxidizing a linear unsaturated alpha olefinic hydrocarbon having at least 20 carbon atoms in the linear chain thereof, a melting point of about 70.degree.F. to 200.degree.F. and a terminal carbon to carbon double bond at a temperature of at least 300.degree.F. to an acid number of no greater than about 8 and a saponification number of no greater than about 25,
- reacting said oxidized hydrocarbon with an amine selected from the group consisting of ammonia, monoethanolamine and mono substituted amine homologs thereof at a temperature less than about 270.degree.F. to produce a modified oxidized hydrocarbon containing less than 0.19% nitrogen by weight thereof,
- and reacting said modified oxidized hydrocarbon with about 3 to about 9% of an organic isocyanate selected from the group consisting of 2,4 tolylene diisocyanate, 2,6 tolylene diisocyanate, polymethylene polyphenyl isocyanate and pp' diphenyl methane diisocyanate at a temperature below about 220.degree.F.
Dependencies are inferred from the claim text.