Invention Grant
- Patent Title: Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles
- Patent Title (中): 使用预混合疏水改性碳酸钙颗粒脱墨纸浆的方法
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Application No.: US11328485Application Date: 2006-01-09
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Publication No.: US07862685B2Publication Date: 2011-01-04
- Inventor: Scott Rosencrance , Charles Ngome , Kevin M. Hale
- Applicant: Scott Rosencrance , Charles Ngome , Kevin M. Hale
- Applicant Address: US GA Marietta
- Assignee: Kemira Chemicals, Inc.
- Current Assignee: Kemira Chemicals, Inc.
- Current Assignee Address: US GA Marietta
- Main IPC: D21C5/02
- IPC: D21C5/02

Abstract:
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.
Public/Granted literature
- US20070158039A1 Use of modified inorganic particles in deinking Public/Granted day:2007-07-12
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