Silicates in soaps

Merrill, Reynold C.

doi:10.1007/bf02579732

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…The above data indicate that, like the sodium silicate (10), the potassium silicates by themselves and mixed with soaps possess detergent properties and are a useful builder for soaps. By using them alone or mixed with other detergents, it should be possible to obtain equivalent or better detergency at lower cost than with the pure detergent alone, particularly in hard waters.…”

Section: Discussionmentioning

confidence: 79%

Potassium silicates in soaps

Merrill

Getty

1949

J Americ Oil Chem Soc

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Summary Properties of potassium silicates of interest in regard to their use as a detergent with soaps have been studied. A 40% potassium coconut oil soap can be mixed in all proportions with the comercial 3.3 ratio potassium silicate containing 39.6% solids. The pH's of the silicate solutions vary from 9.6 to 11 at concentrations of most practical interest. The 3.3 ratio silicate increases the pH of a potassium coconut oil soap solution. More suds form when the soap is dissolved in a 0.031% K2O·3.3SiO2 solution than in the same molality of a potassium carbonate solution or in pure water. Quantitative measurements of their suspending action on ilmenite shows that at their optimum concentrations both silicates are more effective than potassium carbonate and almost as good as soap. The maximum effect of soap occurs at a higher concentration than that for the silicates. A mixture of soap and K2O·3.3SiO2 prevents the deposition of ferric oxide pigment on cotton cloth about equally as well as soap alone; this mixture is more effective than soap alone for preventing the deposition of raw umber. Both silicates prevented the deposition of raw umber more effectively than soap alone or soap‐alkali mixtures below 0.1% and are not much less effective above this concentration. Soil removal experiments with a cottonseed oil‐Oil‐dag soil showed that a mixture of K2O·3.3SiO2 and potassium coconut oil soap was about equally as efficient in distilled water and more efficient in 300 p.p.m. hard water than soap alone.

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Section: Discussionmentioning

confidence: 79%

Potassium silicates in soaps

Merrill

Getty

1949

J Americ Oil Chem Soc

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“…Carboxymethylcellulose has the latter effect to a high degree and, in addition, is apparently adsorbed on fabric with resultant formation of a surface condition that is less receptive to soil. Inorganic builders that have polyvalent anions-for example, the polyphosphates and silicates-are superior (5). Materials such as sodium sulfate, sodium carbonate, and caustic soda, while they assist in soil removal, greatly reduce the W'hiteness retention of syndets as well as that of soap and, accordingly, are usually supplemented by antiredeposition agents.…”

Section: Function Of Buildersmentioning

confidence: 99%

Building Synthetic Detergents

Vaughn¹,

Suter²,

Kramer³

1954

Ind. Eng. Chem.

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Viscosities and solubilities of synthetic detergent mixtures containing soluble silicates

Getty¹,

McCready²

1953

J Americ Oil Chem Soc

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Summary Slurries containing synthetic detergents, silicates, phosphates, and sometimes other additives, were prepared and their viscosities measured at several stresses. Portions of the mixtures were oven‐dried and dilute solutions prepared. Their turbidities and pH values were determined. Mixtures of silicate with pyrophosphate yielded lower viscosities and turbidities than with tripolyphosphate. A mixture of the two phosphates with silicate resulted in a still lower viscosity, but an intermediate turbidity. Increasing the alkalinity of the silicate decreased the turbidity, but the minimum viscosity occurred at an intermediate silicate ratio in most cases. A number of the additives tested lowered the viscosity, but all lowered the turbidity.

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Silicates in soaps

Cited by 3 publications

References 37 publications

Potassium silicates in soaps

Potassium silicates in soaps

Building Synthetic Detergents

Viscosities and solubilities of synthetic detergent mixtures containing soluble silicates

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