CS240329B1 - Organic solvent and / or paint and varnish diluent and / or component thereof - Google Patents

Abstract

The application of the leading alcohol fractions obtained as a by-product in the production of cyclohexanone by oxidation of cyclohexane in the process of refining distillation of semi-products of this production is solved. The essence of the solution is an organic solvent and/or thinner for paints and varnishes and/or its component based on this by-product consisting of 20 to 95 wt. % aliphatic alcohols Ci to Cs, 0.1 to 40 wt. % mixture of cyclic alcohols and hydrocarbons Cs and C6, 1 to 60 wt. % cyclic ketones Cs and Cs, 0.1 to 20 wt. % aldehydes C3 to Cs, 0.1 to 10 wt. % water. The possibilities of using the leading alcohol fractions in the field of solvents or thinners for paints and varnishes are in the replacement of some difficultly obtained components of the final solvents or directly as a final solvent or thinner.

Description

240329

BACKGROUND OF THE INVENTION The present invention relates to an organic solvent and / or a diluent of paints and varnishes and / or a component thereof as a byproduct in the production of cyclohexanone by oxidation of cyclohexane. Nowadays, solvents and / or diluents are used in the paint and la-metal industries, which are mainly prepared by mixing some hydrocarbons, alcohols, ethers, esters, ketones and other organic compounds in such a way as to obtain optimum properties. the final organic solvent and / or paint and varnish diluent. Good mutual compatibility, compatibility with paints and varnishes, suitable volatility and others are desired. Particular compounds include, but are not limited to: toluene, xylene, ethyl acetate, butyl acetate, amyl acetate, ethyl glycol acetate, ethyl alcohol, methylcyclohexanone, butyl alcohol, isopropyl alcohol, acetone, cyclohexanone, benzines, isobutyl acetate, methyl acetate, methyl isobutyl ketone.

According to the properties and purpose of use, the solvent and / or the diluent is usually commercially named (e.g., C-6000, C-6U7, S-6005, and the like). one part of the final organic solvent and / or diluent is generally technically, materially, and energy intensive, often limited by the lack of starting materials and semi-finished products.

In contrast to the prior art, when individual components or mixtures of solvent-based paints and varnishes are the most commonly produced products of technology, there is a possibility of utilizing the frontal alcohol formulations from the production of cyclohexanone by the oxidation of cyclohexane. as an organic solvent and / or a diluent of paints and varnishes and / or as a component thereof, leaving this technology as a by-product.

SUMMARY OF THE INVENTION The subject of the present invention is a solvent and / or diluent of paints and varnishes and / or a component thereof based on by-products of the production of cyclohexanone by oxidation of cyclohexane. It is obtained in the process of refining rectification of the crude cyclohexanone and the anhydrous mixture of cyclohexanone-cyclohexanol and acofraction of the fore alcohol fractions of the rectification column head at 135-155 ° C, at atmospheric pressure and consisting of: 20-95 wt. % of aliphatic alcohols of which C 5 to 90 wt. % aliphatic alcohols C4a C5, 0.1 to 40 wt. mixtures of cyclic alcohols and hydrocarbons of Cs to Cs, 1 to 60 wt. cyclic ketones Cs and Co, 0.1 to 20 wt. aldehydes C3 to Cs, 0.1 to 10 wt. water.

One of the decisive features of the of solvents and solvents is their volatility. Most paint and varnish shredders require a wide temperature range of volatility, which can be achieved by preparing a suitable final solvent and / or diluent. It is preferable to use the fraction of the anterior alcohol components as the heavier volatile component of the mixed solvent and / or diluent. The advantage of the application of an organic solvent and / or a diluent of paints and varnishes and / or its components based on the by-products of the production of cyclohexanone is to reduce the technical, material and energy demands in the process of preparing the final organic solvents and / or or paint thinners. At the same time, the fraction of the leading alcohol parts used to produce steam as a liquid fuel with a calorific value of approx. Further details and advantages are apparent from the examples. Example 1

For the preparation of 1 kg of the final organic solvent, respectively. diluents of synthetic paints are used: 0.3 kg butyl acetate 0.2 kg butyl alcohol 0.1 kg amyl acetate 0.4 kg cyclohexanone

The material difficulty of preparing these organic solvents and / or solvents. The diluent is: 14.60 Kc / kg. Example?

For the preparation of 1 kg of the final organic solvent, respectively. diluents of synthetic coatings are used: 0.3 kg butyl acetate 0.1 kg amyl acetate 0.6 kg alcohol fractions from cyclohexanone production: n-amyl alcohol n-butanol isobutanol cyclohexanone hexanal 2-pentanal 50.5 wt. 12.1 wt. 6.6 wt. 17.2 wt. 3.3 wt. cyclopentanol 2.6 wt. n-propanol 0.8 wt. water 2.2 wt. residue to 100%: cyclohexane, hexanal and other aldehydes.

The material difficulty of the thus prepared solvent, respectively. The diluents with the desired quality parameters retained are: 9,20 Kcs / kg.

Claims (3)

EXAMPLE 5 As a final organic solvent or synthetic paint diluent, the front alcohol fraction used in the production of cyclohexanone from the top of the rectification column at 147 ° C and at atmospheric pressure is used, comprising: mixtures of n-amyl alcohol, n-butanol, 2-pentanol, isobutanol, n-propanol, methanol, isoamyl alcohol, secondary butanol, 11 wt. cyclopentanol, cyclohexanol, cyclohexane cyclohexene, 10.5 wt. cyclohexanone and cyclopentane, 2 wt. mixtures of hexanal, pentanal, butanal, propanal, 1.5 wt. water. The by-product thus obtained is carried out in the field of paints and varnishes as a solvent or a solvent. a diluent of 4 Kc / kg, for example n-butanol is purchased for 10 Kc / kg. EXAMPLE 4 As a final organic solvent or synthetic paint diluent, the frontal alcohol fraction used in the production of cyclohexanone at 147 DEG C. at atmospheric pressure is used, predominantly comprising the following components: 48.7% by weight. n-amyl alcohol 12.4 wt. n-butanol 5.6 wt. % isobutanol 10.6 wt. % cyclohexanone 2.4 wt. % cyclopentanone 9.2 wt. % cyclopentanol 1.3 wt. % cyclohexane 1.7 wt. % cyclohexene 0.3 wt. % cyclohexanol 5.9 wt. % hexanal 0.1 wt. of pentanal, butanal and propanal, 1.8 wt. water. 1 kg of waste fraction is carried out by solvent and / or solvent. thinner of 4 Kc / kg. EXAMPLE 5 By burning 1 kg of pre-alcohols from the cyclohexanone production of Example 2, about 30 MJ of heat is produced in the form of vapor, which represents about 1 Kc, in this way the predominant alcohol fractions. According to the process of the present invention, it is possible to reduce the material and energy demands of the preparation of solvents and diluents, depending on the amount and nature of the replacing component, respectively. We use a low-cost solvent or diluent to achieve a more economical recovery of the by-product of cyclohexanone production by oxidation of cyclohexane. PR E D Ε E I An organic solvent and / or diluent and varnishes and / or a component thereof on the base products of cyclohexane production by oxidation of cyclohexane, obtained in the process of refining rectification as the anterior alcohol fraction from the top of the rectification column at 132 ° C to 155 ° C at atmospheric pressure, characterized in that it consists of 20 to 95 wt. % aliphatic alcohols, from about 0.1 to about 40 wt. % of a mixture of cyclic alcohols and hydrocarbons of C 5 and C 6, the invention of 1 to 60 wt. cyclic ketones Cs and Cs, 0.1 to 20 wt. aldehydes C3 to Cs, 0.1 to 10 wt. water. 2. An organic solvent according to claim 1, characterized in that it consists of 40 to 90 wt. % aliphatic alcohols C4a Cs, 5 to 15 wt. mixtures of cyclic alcohol hydrocarbons of Cs and Cs, 5 to 20 wt. % cyclic ketones Cs and Cs, 2 to 6 wt. C3 to C6 aldehydes, 1 to 2 wt. water. AND