Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With oxygen or halogen containing chemical bleach or oxidant...
Patent
1999-02-24
2000-10-31
Liott, Caroline D.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With oxygen or halogen containing chemical bleach or oxidant...
510406, 510421, 510422, 510430, C11D 172, C11D 3395
Patent
active
061403008
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to cleaning compositions, especially to cleaning compositions having easy rinsing properties.
BACKGROUND OF THE INVENTION
Hypochlorite components are known in the art to serve both as a strong oxidiser which assist in the chemical degradation, break-up and removal of stains and soils and also as an effective disinfectant. This dual role of hypochlorite has contributed to the increased use of said component in the formulation of cleaning compositions.
Hypochlorite compatible surfactants, such as amine oxide and/or anionic sulphate surfactants, are also known to contribute to the cleaning performance of cleaning compositions. However, a problem encountered with the use of said surfactant in cleaning compositions is the foaming property of the surfactants which renders the rinsing step more difficult.
One solution would be to incorporate silicone components known as suds suppressor components, and disclosure of such silicone suds suppressing components may be found in EP-A-0,046,342. However, although effective in suppressing the formation of suds, silicone components are incompatible with hypochlorite which thus, results in a decrease of the suds suppressing performance of the silicone component.
Accordingly, the formulator of a cleaning composition is faced with the challenge of formulating a cleaning composition which exhibits low-foaming properties.
The Applicant has now surprisingly found that the use of a capped nonionic ethoxylated surfactant in a cleaning composition comprising a hypochlorite bleaching component and hypochlorite compatible surfactants fulfills such a need. Such nonionic surfactants are known as low-foaming surfactants, but the Applicant has now found that their use further provides a reduction of the foaming due to other hypochlorite compatible surfactants.
SUMMARY OF THE INVENTION
The present invention is a cleaning composition comprising: OR.sub.3, wherein R.sub.1 is a C.sub.8 -C.sub.18 linear or branched alkyl or alkenyl group, aryl group, alkaryl group, R.sub.2 is a C.sub.2 -C.sub.10 linear or branched alkyl group, R.sub.3 is a C.sub.1 -C.sub.10 alkyl or alkenyl group and n is an integer ranging in the range of from 1 to 20.
In another aspect of the invention, there is provided the use of said nonionic surfactant in a cleaning composition comprising a hypochlorite bleaching component and one or more hypochlorite compatible surfactants, to reduce the foam produced by said hypochlorite compatible surfactants upon use of the cleaning composition.
DETAILED DESCRIPTION OF THE INVENTION
One essential component of the invention is a hypochlorite bleaching component. A highly preferred hypochlorite bleaching component is an alkali metal hypochlorite. Advantageously, the composition of the invention are stable in presence of this bleaching component. Although alkali metal hypochlorites are preferred, other hypochlorite compounds may also be used herein and can be selected from calcium and magnesium hypochlorite. A preferred alkali metal hypochlorite for use herein is sodium hypochlorite. Compositions according to the present invention comprise said hypochlorite bleaching component such that the content of active chlorine in the compositions is from 0.1% to 5%, preferably from 1% to 2% by weight.
The other essential component for the purpose of the invention is a hypochlorite compatible surfactant. Hypochlorite compatible surfactants are surfactants which contain no functionalities (such as unsaturation, some aromatic structures or hydroxyl groups) susceptible of oxidation by the hypochlorite bleach. Another property of such hypochlorite compatible surfactants is their foaming properties. All hypochlorite compatible surfactants have the common surfactant structure, i.e. they comprise a hydrophobic portion and a hydrophilic portion.
Hypochlorite compatible surfactant for use herein may be of any of a variety of different types including anionics, zwiterrionics, amphoterics.
Suitable anionic surfactants for the purpose of the inve
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patent: 5073286 (1991-12-01), Otten et al.
patent: 5510047 (1996-04-01), Gabriel et al.
patent: 5705465 (1998-01-01), Angevaare et al.
Camp Jason J.
Liott Caroline D.
The Procter & Gamble & Company
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