Method for producing oil-resin varnish

 

(57) Abstract:

The invention relates to the production of paint and varnish materials, in particular oil-resin varnish, which is used in the production of enamels used as a protective, decorative, electrical and other organic coatings. Oil-resin varnish was prepared by condensation copolymerization of vegetable oil, a polyhydric alcohol, polybasic acid and a modifier by adding at the final stage of the process solvent. As a polyhydric alcohol use waste processing high-boiling by-products production dimethyldioxanes flotation - oxal, as a modifier use a petroleum resin, taken in the weight ratio of: vegetable oil:petroleum resin 1-4:1-5, if necessary, use lead-manganese drier P and waste production of caprolactam oil as a polybasic acid in the following components: vegetable oil 5-30 wt.%, petroleum resin 5-40 wt.%, flotation - oxal 1-25 wt.%, oil 0-15 wt.%, said desiccant 0-2 wt.%, the solvent 35-45 wt.%. The resulting oil-resin varnish has a high usage of the particular oil-resin varnish, which is used in the production of enamels used as a protective, decorative, electrical and other organic coatings.

Known [SU # 821450, CL 08 G 63/48] a method of obtaining modified alkyd resins (varnishes) by reacting tallow or vegetable oils or their fatty acids, polyhydric alcohols, polybasic acids or their anhydrides, and modifier. As a final use 10-24 wt.% of the total of components bottoms of caprolactam-X-oil of the following composition, wt.%:

oligomers of cyclohexanone 61-66

dicyclohexano 12-24

cyclohexanone 1-2

the cyclohexanol 3-10

phenol 1-3

other volatile components

Its disadvantages include the scarcity and high cost of raw materials used, such as vegetable oils and anhydrides of polybasic acids, polyhydric alcohols.

An object of the invention is to optimize lacquer composition while maintaining its high level of performance.

This object is achieved in that the inventive method for producing oil-Smolyaninova alcohol - "flotation - oxal", polybasic organic acid - waste caprolactam production of oil, and the modifier is a petroleum resin, taken in the weight ratio of vegetable oil: petroleum resin 1-4:1-5, with the following content, wt.%:

vegetable oil 5-30

flotation - oxal 1-25

oil 0-15

modifier 5-40

desiccant P 0-2

the solvent 35-45

Petroleum resin additive synthesis varnish accelerates the drying, increases the hardness of the varnish layer.

Flotation - oxal brand T-66 is a product of processing high-boiling side of compounds production dimethyldioxanes and is characterized by a high content of hydroxyl groups.

The oil is a waste product of caprolactam and has the following composition, wt.%:

- cyclohexylcyclohexanes 40

- cyclohexylamine esters 60

sodium salts of mono - and

dicarboxylic acids of up to 24

- cyclohexanone 20

the polymerization products

and polycondensation 45

The essence of the proposed technical solutions I have ahuatanga alcohol, modifier, and optionally polybasic acid with the addition at the final stage of the solvent and, if necessary, lead-manganese drier P.

The proposed solution differs from the known fact that as a polyhydric alcohol is used, the waste processing high-boiling by-products production dimethyldioxanes (flotation - oxal), polybasic acid - waste caprolactam production (oil), and the modifier is a petroleum resin, taken in the weight ratio of: vegetable oil:petroleum resin 1-4:1-5, with the following content, wt.%:

vegetable oil 5-30

polyhydric alcohol 1-25

oil 0-15

modifier 5-40

desiccant P 0-2

the solvent 35-45

The invention is illustrated by examples.

To obtain a varnish used a petroleum resin paint grade "B" produced by THE 38.10916-79.

As the oil is taken UNDER product that meets the requirements of THE 2433-016-00205311-99:

Density at 20 C, g/cm30,98-1,02.

Mass fraction of water, %, not more than 1.5.

Mass fraction of volatiles, %, not the top volume of 25 DM3equipped with a jacket and a reflux condenser, download song from 1.5 kg of sunflower oil and 1.0 kg of oil UNDER pre-oxidized according to the standard technique to viscosity of 80-120 with at (200,5)With the viscometer VZ-246 (nozzle diameter of 6 mm), and 2.5 kg of flotation reagent - oxal. When the stirrer in a stream of nitrogen contents of the reactor are heated to 140-150C and add 5 kg petroleum resin grade "B". Enter petroleum resin is performed with such a speed that the temperature of the reaction mixture did not fall below 140 C. After that, heating is continued for another one hour and the reaction mass is pumped into the mixer under a layer of white spirit, pre-loaded in an amount of 5 kg In the mixer includes a mixer and in the atmosphere azeta keep stirring for 30 min, then adding 0.9 kg of solvent. Lacquer is stirred for another half hour, cooled to 40C, enter 0.1 kg of desiccant P and poured into the tank, where they spend their statement on the type of dry residue and viscosity by adding the calculated amount of white spirit.

Finished paint checked for purity by loading the sample on the glass. If necessary, it is subjected to purification by filtration.

Example 2.

The synthesis conditions on polimernoi resin is increased to 7 kg

From the description of the invention and the table shows that the claimed technical solution is possible to obtain an oil-resin varnish with a high performance.

Method for producing oil-resin varnish by condensation copolymerization of vegetable oil, a polyhydric alcohol, polybasic acid and a modifier by adding at the final stage of the process solvent, characterized in that as a polyhydric alcohol use waste processing high-boiling by-products production dimethyldioxanes flotation-oxal, as a modifier use a petroleum resin, taken in the weight ratio of vegetable oil :petroleum resin 1-4:1-5, if necessary, use lead-manganese drier P and waste production of caprolactam oil as a polybasic acid with the following content, wt.%:

Vegetable oil 5-30

Petroleum resin 5-40

Flotation-oxal 1-25

Oil 0-15

Said desiccant 0-2

The solvent 35-45

 

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FIELD: polymer production.

SUBSTANCE: invention relates to production of modified alkyd resins widely used in varnish-and-paint industry as well as to lacquer materials based thereon for use as indoor and outdoor painting operations. Alkyd resin is obtained through alcoholysis of vegetable oils and optionally colophony with polyhydric alcohol (glycerol or pentaerythritol) in presence of catalyst, in particular mixture of lead and cadmium salts of saturated or unsaturated aliphatic C6-C18-monocarboxylic acid in the form of solution, in white spirit on heating, quantity of catalyst constituting 0.009-0.02% on the weight of components. Alcoholysis is followed by polycondensation of phenol resin based on alkylphenol and formaldehyde (at their ratio from 1:1 to 1:2) with dicarboxylic acid anhydride and modifier or using aromatic monocarboxylic acid in mixture with substituted aromatic monocarboxylic acid taken in specified proportions. Modified alkyd resins thus obtained serve as base for production of lacquer material containing a variety of fillers, pigments, siccatives, organic solvent, and, if necessary, thickener as well as various special additives (fire retardants, corrosion inhibitors, and the like). Resulting resins ate clear, with elevated content of volatiles, low acid number, rapidly drying, which enable manufacture of lacquer materials based thereon.

EFFECT: improved physicochemical properties of lacquer materials (hardness, elasticity).

3 cl, 4 tbl

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