Bleaching composition
AssigneeBurlington Chemical Co., Inc.
InventorsSamuel B. Moore, James F. Leuck, Edwin T. Turner
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Abstract
A bleaching composition for cellulosic materials such as paper pulp, cotton and cotton blends. The chemical system of the present invention includes a mixture of sodium hydroxide, optical brighteners and an enhanced hydrogen peroxide including a silicate-free stabilizer. In the preferred embodiment, the silicate-free stabilizer includes; magnesium acetate; phosphonic acid derivative or substituted phosphonic acids; dipicolinic acid; and the balance water. The resulting textile goods are soft, absorbent, silicate-free with a Hunter Scale whiteness of greater than about 85. Because a silicate-free stabilizer is used, low levels of extractable solids are obtained.
Claims8
A liquid, silicate-free bleach composition for use in bleaching cellulosic materials including paper pulp, cotton and cotton blends, said composition comprising:
- (a) between about 35 to 50 wt % of hydrogen peroxide;
- (b) between about 0.05 to 1.0 wt % of magnesium acetate;
- (c) between about 0.01 to 0.1 wt % aminoalkylphosphonic acid;
- and
- (d) the balance water.
A stabilized, silicate-free, hydrogen peroxide composition for use in bleaching cellulosic materials including paper pulp, cotton and cotton blends, said composition comprising:
- (a) about 35 to 50 wt % hydrogen peroxide,
- (b) magnesium acetate, and
- (c) an aminoalkylphosphonic acid.
A stabilized, silicate-free, hydrogen peroxide composition comprising:
- (a) about 35 to 50 wt % hydrogen peroxide,
- (b) about 0.05% to 1.0% magnesium acetate,
- (c) about 0.01% to 1.0% aminoalkylphosphonic acid, and
- (d) about 0.01% to 0.1% dipicolinic acid.
Dependencies are inferred from the claim text.