发明名称 |
Automatic dishwashing compositions comprising cobalt catalysts |
摘要 |
Automatic dishwashing detergent compositions comprising certain cobalt catalysts are provided. More specifically, the invention relates to automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits (especially tea stain removal) through the selection of cobalt bleach catalyst having the formula:[Co(NH3)n(M)m(B)b]Tywherein cobalt is in the +3 oxidation state; n is 4 or 5 (preferably 5); M is one or more ligands coordinated to the cobalt by one site; m is 0, 1 or 2 (preferably 1); B is a ligand coordinated to the cobalt by two sites; b is 0 or 1 (preferably 0), and when b=0, then m+n=6, and when b=l, then m=0 and n=4; and T is one or more appropriately selected counteranions present in a number y, where y is an integer to obtain a charge-balanced salt (preferably y is 1 to 3; most preferably 2 when T is a -1 charged anion); and wherein further said catalyst has a base hydrolysis rate constant of less than 0.23 M-1 s-1 (25 DEG C.). Preferred automatic dishwashing compositions comprise amylase and/or protease enzymes. Included are methods for washing tableware in domestic automatic dishwashing appliances using the cobalt catalysts.
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申请公布号 |
US5705464(A) |
申请公布日期 |
1998.01.06 |
申请号 |
US19970795898 |
申请日期 |
1997.02.06 |
申请人 |
THE PROCTER & GAMBLE COMPANY |
发明人 |
SCHEPER, WILLIAM MICHAEL;PERKINS, CHRISTOPHER MARK |
分类号 |
C11D3/395;C11D3/26;C11D3/39;(IPC1-7):C11D3/39;C11D7/54;B08B3/04 |
主分类号 |
C11D3/395 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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