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Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles
Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles
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机译:使用预混合的疏水改性碳酸钙颗粒对纸浆脱墨的方法
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摘要
The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.
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