Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Reexamination Certificate
2008-05-20
2008-05-20
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
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
active
07375072
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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patent:
Boyer Charles
Drach John E.
Henkel Kommanditgesellschaft auf Aktien
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