US2165857A - Solidified normally liquid substances - Google Patents

Description

This invention relates to a process for solidifying normally liquid substances, such as liquid polyhydric alcohols, and to the solidified products obtained thereby.

It has been proposed to solidify glycerine by an addition of sodium stearate, or soap made from hard fats, in association, if desired, with other agents. Glycerine thus solidified may also be worked up into lubricants, anti-friction agents,

salves, or the like. Naturally, owing to their content of soap, such products have an alkaline reaction which, as is well mown, is undesirable in many instances. Moreover, the purpose for which they are to be used precludes the additional use of agents with an acid reaction, such as salicylic acid or the like. Again, the addition of substances, such as zinc oxide, which react with soap, is usually impossible.

It has now been found that saturated fatty alzo cchols of the group C6--Ci8, for example myristyl-, palmityl-, docosyland myricyl alcohol, or technical mixtures of same, are adapted to solidify glycerine and glycol respectively.

This action may exactly be controlled by th 5 joint use of chemical compounds of sapona'ceous character, such as salts of the sulphuric acid esters of fatty alcohols, or of fatty-acid condensation products, or the like. Depending on the relative proportions of the substances employed, so the resulting products are similar to Vaseline, or also opaque salves and lubricants. Nearly solid preparations can also be obtained with the agents specified.

In order to distribute these alcohols in .the

35 most suitable manner in the glycerine and glycol respectively, the joint use of mown emulgents, i. e. emulsifying and dispersingly acting substances, which do not have an alkaline reaction in anaqueous" solution, is recommended. Such- 40 substances are first of all the neutralization products of sulphuric acid esters (a) Of fatty alcohols, i. e. of higher molecular aliphatic alcohols with at least 8 carbon atoms and (b) 0f monoand di-glycerides respectively of higher molecular fatty acids. v s

For many purposes the neutralization products of sulphurated unsaturated mineral oils, sulphurated castor oils, sulphurated fatty acids of 50 castcr oils, sulphurated fatty acids of fish oil also may be used. Finally those fatty acid condensation produc represent excellent emulgents which are obtained by condensing higher molecular fatty acids in 55 the form of their haloids with the most various wing. Application rial No. 172,922.

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water soluble organic products, for instance, the sulphuric acid esters of low molecular oxyalkylamines, as aminoethyl-sulphuric acid, or the onand aminoaikyl-acid sulphides respectively, for example, oxyethanacid sulphide or aminoethan- 5 acid sulphide, or the decomposition products of albumen as for instance lysalbic acid.

Gelatinous preparations, applicable with vantage as lubricants and anti-friction agents for technical p poses, can be produced in extensive l0 variety.

The joint employment of skin emollients, such as salicylic acid or the like, and also of antic'orrosive agents in the case of preparations used as lubricants for special purposes in the W 1 chinery industry, is also easily possible.

The present process enables the products to be adapted to meet the chief physical properties required for their technical application, such as the consistency which is retained even at low temperatures, by judicious selection of erent ingredients and their proportions in the ture. Finally, the resulting products, both as such, and also after the addition of fillers such as starch, agar-agar, dimethylcellulose, and the like, or substances with a medicinal or cosmetic action, form valuable preparations for the care of the skin or for pharmaceutical purposes.

In addition to glycerine, the so-called glycerine substitutes, such as slycols (ethylene-, butyleneand pentamethylene glycols) aqueous sugar solutions, and the like, may also be solidified by the present process. Glycerine and glycols can be used both in the anhydrous form and diluted with water. The products obtained by the process o! the invention may be arranged to have an acid, neutral, or alkaline reaction. The following examples will serve to illustrate the invention.

' Example I Example I! 9 parts by weight of myristyl alcohol are melted down, with 90 parts by weight of anhydrous glycerine, on the water bath, and 1 part by weight of sodium cetyl-sulphate and 10 parts by weight of starch are stirred in. The stirring of the mass is continued until cold, 9. semi-solid, unctuous 55 the skin, being obtained.

Example III 8 parts by weight of a technical mixture. consisting of approximately equal parts of palmityland stearylalcohol, are melted down on the water bath with 2 parts by' weight of triethanolamine .dodecylphosphate and 80 parts by weight of hydrated (80%) glycerine, and treated with 2 parts by weight of salicylic acid, the whole being stirred until cold. An excellent agent for the pediculture 2,185,857 mass, forming a good medium for the care 01 a sulphuric acid ester oi a fatty alcohol having at least 8 carbon atoms in admixture with myristyl alcohol, said mixture being in an amount suflicient to solidify said substance.

2. A solid composition of matter comprising a substance selected from the group consisting oi. glycerine, glycols, and aqueous sugar solutions, in combination with sodium cetbl sulphate in admixture with myristyl alcohol, said'mixture being in an amount suflicient to solidify said substance.

3. A solid composition 01' matter comprising a substance selected from the group consisting of glycerine, glycols, and aqueous sugar solutions, in combination with about 840% myristyi alcohol and 1-2% of a neutralization product of a sulphuric acid ester of a fatty alcohol having at least 8 carbon atoms.

' SIMON JACOBOWI'IZ.