发明名称 |
METHOD FOR INCREASING BRIGHTNESS RETENTION OF LAUNDERED FABRICS |
摘要 |
The invention provides a method for increasing the brightness retention of a laundered fabric after numerous washing cycles by adding to an aqueous wash liquor a quantity of a commercial laundry detergent which delivers at least 0.1 g of an optical brightener into said wash liquor; and prior to, concurrent with, or after the commercial laundry detergent, adding a bleachi ng composition in an amount of at least about 0.5g/L. The bleaching composition contains about 2.5-10% alkali metal hypochlorite; about 0.05-5% of a bleach stable surfactant bearing at least one nitrogen atom; a bleach stable anioni c surfactant or a hydrotrope, wherein the ratio of (ii) to (iii) is between about 10:1 to about 1:10; and an effective amount of a source of alkalinity. The fabric is repeatedly washed and the optical brightener is enabled to deposit on the fabric to increase versus a control a Stensby whiteness measure of at least about .DELTA. W=4.
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申请公布号 |
CA2280259(C) |
申请公布日期 |
2009.10.27 |
申请号 |
CA19992280259 |
申请日期 |
1999.08.11 |
申请人 |
THE CLOROX COMPANY |
发明人 |
AKBARIAN, FETEMAH HOMA;VAN BUSKIRK, GREGORY;TORRES, HEIDI J. |
分类号 |
D06L3/12;C11D1/22;C11D1/24;C11D1/75;C11D1/83;C11D1/90;C11D1/94;C11D3/20;C11D3/34;C11D3/395;C11D3/42;C11D11/00;D06L3/08 |
主分类号 |
D06L3/12 |
代理机构 |
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主权项 |
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地址 |
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