Abstract: There is provided a deinking process carried out using white water according to which an excellent whiteness and an excellent areal ratio of residual ink fines can be secured while maintaining a proper pulp yield. In the deinking process comprising a flotation step wherein use is made of treatment water containing white water, at least part of the flotation step is effected in the presence of at least one compound selected from the group consisting of cationic compounds, amine compounds, acid salts of amine compounds, and ampholytic compounds.

Abstract: A deinking method comprising the steps of liberating ink from waste paper as a raw material and removing the liberated ink from a flotation system, wherein a nonionic surfactant, e.g., a reaction product obtained by adding an alkylene oxide to a mixture of an oil & fat and an alcohol, an alkylene oxide adduct of a fatty acid, or an alkylene oxide adduct of a higher alcohol, is used for the liberation of ink, and the flotation step is effected in the presence of a cationic compound, an amine, an acid salt of an amine or an amphoteric compound at a pH of from 4 to 9, provides a high quality deinked pulp having a high whiteness and a little residual ink spots.

Abstract: In a deinking process at least comprising the step of stripping ink from wastepaper as the starting material and the step of removing the stripped ink from a flotation system, the contact angle of the aqueous solution portion of a slurry containing the stripped ink with the interfaces of ink particles in the flotation step is controlled to be at least 70°.

Abstract: The present invention provides a deinking process from which bulkier pulp sheets that are excellent in paper strength, printability, ect. can be obtained. A deinking process comprising the steps of sipping ink from the flotation system. The flotation step is controlled so that the interfacial potential (.xi. potential) of ink particals is in the range of -5 mV to -60 mV and the interfacial potential (.xi. potential) of pulp is in the range of -5 mV to -.mV wherein a difference exist of at least 10 mV in the .xi. potential of the ink particles and pulp.

Abstract: A substitute composition for cocoa butter comprises 5 to 60% by weight of an oleaginous composition (A) and 40 to 95% by weight of another oleaginous composition (B),(A) an oleaginous composition which comprises 40 to 100% by weight of mixed acid triglyceride(s) containing 15 to 70% by weight of saturated fatty acid(s) having 20 to 24 carbon atoms and 20 to 60% by weight of unsaturated fatty acid(s) having 16 to 22 carbon atoms as constituent fatty acids and containing at least one saturated fatty acid residue having 20 to 24 carbon atoms and at least one unsaturated fatty acid residue having 16 to 22 carbon atoms per molecule; and(B) an oleginous composition which contains at least 70% by weight of 1,3-disaturated-2-oleoylglycerols comprising 1,3-dipalmitoyl-2-oleoylglycerol, 1-palmitoyl-2-oleoyl-3-stearoylglycerol and 1,3-distearoyl-2-oleoylglycerol and shows a weight ratio of stearic acid to palmitic acid in the constituent fatty acid residues of 1.5:1 to 6.0:1.