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US 8,133,351 B2Granted
Deinking a cellulosic substrate using magnesium hydroxide
AssigneeNalco Company
InventorsPrasad Y Duggirala, Michael J Murcia
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Abstract
A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.
Claims2
A method of removing ink from a cellulosic containing substance comprising:
- (a) adding to the substance a composition comprising:
- (1) magnesium hydroxide, (2) xanthan gum, (3) tall oil fatty acid, (4) sodium lauryl sulfate, and (5) water;
- (b) optionally excluding the addition of caustic soda to the cellulosic containing substance;
- and
- (c) optionally excluding the addition of hydrogen peroxide to the cellulosic containing substance.
2 more elements
Dependencies are inferred from the claim text.