RU2500700C2 - Hydrophilic plasticine - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: hydrophilic plasticine is a product of comprehensive recycling of concentrated steep water from starch production, having sufficient plastic properties. The hydrophilic plasticine is obtained by heat treatment at 90°C, while simultaneously mixing the mixture of dry sieved moss peat with moisture content of not more than 20% and a thickened corn-steep extract, formed during starch production when corn is soaked in warm water at 45-52°C, which contains up to 0.35% sulphuric acid with respect to SO₂ and less than 2% fatty acids and dry substances boiled down to concentration of not less than 48%. Components of the mixture are taken in ratio of 1:(4-6), respectively. If content of fatty acids in the thickened corn-steep extract is higher than 2%, the components are first heated to different temperatures before mixing.

EFFECT: plasticine is plastic and dissolves in water.

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Description

The invention relates to the field of deep waste disposal, with the receipt of a new, previously unknown polymer material.

The technical problem is solved by mixing and subsequent heat treatment at 90 ° C, with simultaneous stirring, of a mixture consisting of two components: top peat, dried to a moisture content of not more than 20% and sifted through a sieve with a pore diameter of up to 1 mm and condensed corn extract formed in starch and syrup production, when corn is soaked in warm, at a temperature of 45-52 ° С, water containing up to 0.35% sulfurous acid (in terms of SO ₂ ), and then boiled under vacuum, to a concentration of dry substances is not below 48 % In appearance, it is a thick, opaque liquid, or an almost uniform paste, with a flocculent suspension that can settle. During storage, it can be stratified into two inhomogeneous layers: the upper dark and lower light. The approximate physico-chemical composition of the condensed corn extract and its layers, in%, is given in the table (data from the book of Professor NN Tregubov “Technology of starch and starch products”, M., 1970, p. 299).

Table 1 Indicators Source extract Upper layer bottom layer Solids Concentration (S.V.) 52.33 51.80 54.29 Acidity in terms of HCl 11.64 11.97 11.56 Sulfuric acid H ₂ SO ₃ 0,200 0.197 0.209 Fat 1,163 1,245 1,093 Kjeldahl protein 40.36 41.85 34.96 Ash content 21.74 21.93 21.07 Total Soluble Sugars 3.08 3.18 2.84 Volume Lactic Acid 8.71 9.70 5.96 Lactic acid in terms of S.V. 15.06 17.86 11.50

The mixture of peat and condensed corn extract obtained as a result of preparation, dosing and mixing processes in a weight ratio of 1: (4-6) is subjected to heat treatment at a temperature of 90 ° C, while simultaneously mixing continuously until a viscous, dense black mass is obtained, which when cooled, hardens and acquires plastic properties.

Thus, plasticine is obtained, a feature of which is its solubility in water.

At the same time, it should be noted that products and forms from the obtained plasticine, after removing moisture from them, acquire a certain heat resistance and can withstand temperature when heated in an oven above 300 ° C, without deformation changes.

Example.

Dried to a moisture content of not more than 20%, high peat is sieved through a sieve with a pore diameter of up to 1 mm. A sifted weighed amount of 20 grams is mixed with 100 grams of condensed corn extract containing at least 48% solids and up to 0.35% sulfur dioxide (SO ₂ ). The resulting mixture is subjected to heat treatment at a temperature of 90 ° C, with simultaneous stirring, until a viscous, dense mass of black is obtained, which solidifies and acquires plastic properties upon cooling.

The above method of producing hydrophilic plasticine can be successfully applied with a fatty acid content in the condensed corn extract of less than or equal to 2%.

With an increased content of fatty acids in it, more than 2%, the method for its preparation is effective, with preliminary separate heat treatment of the components; sifted peat is preheated to a temperature of 160-250 ° C in a special device, the design of which eliminates its spontaneous combustion, and then it is mixed with condensed corn extract, heated to 95-100 ° C. In this case, an instantaneous exothermic reaction occurs, accompanied by significant heat release and, at the same time, the formation of a homogeneous viscous plastic mass of black color. Plasticine obtained in this way has a shiny glossy surface and has higher elastic properties.

Compare the resulting plasticine with existing analogues.

Known plasticine based on petrolatum, a mixture of paraffin and ceresin, rosin, zinc oxide, as well as pigments and / or dyes - SU, copyright certificate 1333678, cl. C08L 91/06.

There is plasticine containing protective wax, petroleum paraffin, liquid paraffin, pigments and / or dyes and fillers in the form of talc and chalk - SU, copyright certificate 773055, class. C08L 91/06.

Many people are familiar with clay based on petrolatum, paraffin, kaolin, industrial oil, rosin, and pigments and / or dyes - SU, copyright certificate 594146, cl. C08L 91/06.

All these types of plasticine, mainly consisting of oil refined products - a non-renewable raw material source, are complex multicomponent derivatives, are expensive at cost, practically insoluble in water and are intended solely for modeling and modeling, while the proposed , as an application for an invention, hydrophilic plasticine will find its use not only as a material for modeling in a tuning studio, in particular, but also as a filler in the production of drofilnyh rubbers, rubber compounds, and biodegradable plastics.

Disclosure of the invention.

The table below shows the actual signs characterizing the resulting substance.

table 2 Name of indicator Actual signs 1. Appearance Plastic-viscous mass, which can take any form. 2. Color The black. 3. Smell Characteristic specific odor. 4. Consistency Homogeneous plastic-viscous mixture. 5. Plastic properties It doesn’t dry out, it connects easily and softens well. 6. Content of water-soluble dyes Contains water-soluble natural colorants. 7. Solubility in water A plasticine cube with sides of 1X1X1 cm faces dissolves in hot water for half an hour 8. Shelf life In sealed packaging for more than 1 year retains plastic properties. 9. Transportation It can be transported when packaged in airtight containers, weighing 10, 25 and 50 kg.

Claims (1)

Hydrophilic plasticine as a product of the deep utilization of concentrated starch waters from starch production obtained by heat treatment at 90 ° C, while mixing a mixture of renewable raw materials: dry sifted peat peat with a moisture content of not more than 20% and condensed corn extract formed in starch-producing plants soaking corn grains in warm with a temperature of 45-52 ° C water containing 0.35% of sulfurous acid (calculated as SO _2), and comprising less than 2% fatty acids, and then boiled under vacuum to a solids concentration of not less than 48%, taken in a weight ratio of 1: (4-6), or when the content of fatty acids in the condensed corn extract is more than 2% - by mixing the previously heated above components: horse peat - to a temperature of 160-250 ° C and condensed corn extract - to a temperature of 95-100 ° C, taken in a weight ratio of 1: (4-6).