Bleach-containing laundry detergents or cleaning...

Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component

Reexamination Certificate

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C510S276000, C510S299000, C510S318000, C510S359000, C510S361000, C510S398000, C510S400000, C510S443000, C510S453000, C510S436000, C510S460000, C510S477000, C510S509000, C510S510000, C510S511000, C510S512000, C510S531000, C510S534000, C510S302000, C510S309000, C510S310000, C510S372000, C510S375000, C510S379000

Reexamination Certificate

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11200679

ABSTRACT:
A builder-containing laundry detergent or cleaning composition is comprised of: (1) alkali metal percarbonate; (2) a water-soluble builder block which comprised of:a) from 5% by weight to 35% by weight of citric acid, an alkali metal citrate, an alkali metal carbonate, and/or an alkali metal hydrogen carbonate,b) up to 10% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5,c) up to 2% by weight of phosphonic acid and/or alkali metal phosphate,d) up to 50% by weight of alkali metal phosphate, ande) up to 10% by weight of polymeric polycarboxylate,wherein at least two of components b), c), d) and e) are present in amounts greater than 0% by weight, and (3) a soil release-capable alkyl or hydroxyalkyl cellulose derivative. The soil release-capable action of cellulose derivatives is particularly marked when they are used in laundry detergents or cleaning compositions which comprise alkali metal percarbonates and contain only water-soluble builders.

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