Patent ID: 9212333
Filing Date: 2015-12-15
Classification: B01F,C10M

Abstract:
1. A method for adjusting the viscosity of a dispersion material containing fine particles of a crystalline polymer as a dispersed particle with a dispersant by changing a temperature of the dispersion material, comprising increasing the viscosity of the dispersion material by elevating the temperature of the dispersion material or decreasing the viscosity of the dispersion material by lowering the temperature of the dispersion material, wherein the dispersant comprises a copolymer of a first monomer with a second monomer, in which: the first monomer is a monomer crystallizable as a polymer having a high affinity to the dispersed particle, the first monomer is one or more than one selected from: (A) ethylene; (B) a (meth)acrylate, a (meth)acrylamide, a vinylether, a vinylester, a siloxane, an α-olefin or a substituted styrene, each having a straight-chained alkyl side chain having at least eight carbon atoms; (C) a (meth)acrylate, a (meth)acrylamide, a vinylether, a vinylester, a siloxane, an α-olefin or a substituted styrene, each having an at least partially fluorinated straight-chained alkyl side chain having at least eight carbon atoms; and (D) propylene, and the second monomer is one or more than one selected from: (E) a (meth)acrylate, a vinylether, a vinylester, a maleic ester, an itaconic ester, an acrylamide, or a substituted styrene, each having a straight-chained alkyl side chain having seven carbon atoms or less than seven carbon atoms; (F) a (meth)acrylate, a vinylether, a vinylester, a maleic ester, an itaconic ester, an acrylamide, or a substituted styrene, each having a branched alkyl side chain having seven carbon atoms or less than seven carbon atoms; (G) a (meth)acrylate, a vinylether, a vinylester, a maleic ester, an itaconic ester, or an acrylamide, each having an aryl group; (H) a (meth)acrylate, a vinylether, a vinylester, a maleic ester, an itaconic ester, an acrylamide, or a substituted styrene, each having an oxyethylene structure or an oxypropylene structure; (I) styrene; (J) acrylic acid; (K) methacrylic acid; (L) vinyl acetate; (M) a (meth)acrylate having a dimethylsiloxane side chain, and (N) a (meth)acrylate having a fluorinated alkyl side chain.