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 composition including a silicate-free stabilizer. In the preferred embodiment, the silicate-free stabilizer includes a magnesium salt; an aminoalkylphosphonic acid; 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.
Type:
Grant
Filed:
November 6, 1995
Date of Patent:
April 1, 1997
Assignee:
Burlington Chemical Co., Inc.
Inventors:
Samuel B. Moore, James F. Leuck, Edwin T. Turner
Abstract: Liquid detergent compositions are disclosed, which contain a solid peroxygen compound suspended in a liquid phase containing water and at least one water-miscible solvent, and low levels of silicate which provide adequate suspension for the solid peroxygen compound in the liquid phase.
Abstract: Improved detergent compositions, especially granular detergents, comprising bleach activators which form multiperacids, especially specific monoquaternary substituted bis(peroxycarbonic) acids, upon perhydrolysis are provided.
Type:
Grant
Filed:
October 23, 1995
Date of Patent:
January 21, 1997
Assignee:
The Procter & Gamble Company
Inventors:
Gregory S. Miracle, Mark R. Sivik, Patti J. Kellett
Abstract: Bleach boosters comprising zwitterionic imines and anionic imine polyions having a net negative charge are disclosed. The bleach boosters increase bleaching effectiveness in lower temperature solutions and demonstrate superior color safety profiles. The bleach boosters are ideally suited for inclusion into bleaching compositions including those with detersive surfactants and enzymes. Also provided is a laundry additive product including zwitterionic imines and anionic imine polyions with a net negative charge as bleach boosters. A method for laundering a fabric employing the bleach boosters of the present invention is also disclosed.
Type:
Grant
Filed:
September 11, 1995
Date of Patent:
November 19, 1996
Assignee:
The Procter & Gamble Company
Inventors:
Gregory S. Miracle, Michael E. Burns, Patti J. Kellett, James C. T. R. Burckett-St. Laurent