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INVENTION
Russian Federation Patent RU2233852
METHOD FOR PRODUCING OIL-resin varnish
Name of the inventor: Makhlai VN (RU); Afanasiev SV (RU); Makarov ME (RU); Semenov VA (RU); Pronin, AI (RU)
The name of the patentee: JSC "Togliatti"
Address for correspondence:.. 445 653, Samara, Tolyatti, Povolzhye w, 32, OAO "Togliatti", SV Afanasyev
Starting date of the patent: 2002.11.26
The invention relates to the production of paints, in particular oil-resin varnish, which is used in the production of enamels used as protective, decorative, electrical and other organic coatings. Oil-resin varnish obtained by condensation copolymerization of vegetable oil, a polyhydric alcohol, a polybasic acid and a modifier with the addition of solvent in the final stage of the process. The polyhydric alcohol is waste processing of high boiling by-products dimethyldioxane, flotoreagent - oxal as petroleum resin modifier are used, taken in a weight ratio of: Vegetable oils: petroleum resin 4.1: 5.1, if necessary using lead-manganese drier 64P and waste oil under production of caprolactam as a polybasic acid with the following component: oil 5-30 wt%, petroleum resin of 5-40 wt%, Flotation - oxal 1-25 wt%, 0-15 wt oil under.... %, said desiccant 0-2 wt.%, the solvent is 35-45 wt.%. The resulting oil-resin varnish has a high performance.
DESCRIPTION OF THE INVENTION
The invention relates to the production of paints, in particular oil-resin varnish, which is used in the production of enamels used as protective, decorative, electrical and other organic coatings.
Known [SU №821450, cl. C 08 G 63/48] a method for producing the modified alkyd resin (varnish) 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% by weight of the total components bottoms of caprolactam-X oil with the following composition, wt.%.:
cyclohexanone oligomers 61-66
ditsiklogeksanon 12-24
cyclohexanone 1-2
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 the composition of the varnish while maintaining a high level of his performance.
The task is achieved by the fact that in the declared method of producing oil-resin varnish as the oil is used, sunflower, linseed or other oils, as a polyhydric alcohol - "Flotation - oxal" polybasic organic acid - waste caprolactam oil AML and modifier is petroleum resin, taken in a weight ratio of vegetable oil: petroleum resin 1-4. 1-5, with the following component ratio, wt%:
vegetable oil 5-30
Flotation - oxal 1-25
oil under 0-15
modifier 5-40
drier 64P 0-2
solvent 35-45
The addition of petroleum resin varnish on the synthesis stage accelerates the drying, increases the hardness of the lacquer layer.
Flotation - oxal brand T-66 is a product of high-boiling compounds produce dimethyl dioxane and characterized by a high content of hydroxyl groups.
AML is a waste oil caprolactam and has the following composition, wt.%:
- Tsiklogeksilidentsiklogeksanon 40
- Cyclohexyl ester to 60
- Sodium salts of mono- and
24 dicarboxylic acids
- Cyclohexanone to 20
- Polymerization products
and polycondensation to 45
The essence of the proposed technical solution is a method for producing oil-resin varnish by condensation copolymerization of vegetable oil, a polyhydric alcohol, and optionally the modifier polybasic acid with addition of solvent in the final stage and optionally manganese drier lead 64P.
The proposed solution is different from the well-known fact that as a polyol is used Recycling of high boiling byproducts dimethyl dioxane production (Flotation - oxal), polybasic acid - waste product of caprolactam (oil AML), and modifier is a petroleum resin, taken in a weight ratio: oil vegetable: petroleum resin 1-4. 1-5, when the content of the following components, wt%:
vegetable oil 5-30
polyhydric alcohol 1-25
oil under 0-15
modifier 5-40
drier 64P 0-2
solvent 35-45
The invention is illustrated by examples.
For lacquer used petroleum resin paint brand "B" generated by TU 38.10916-79.
As oil under taken a product that meets the requirements of TU 2433-016-00205311-99:
Density at 20 ° C, g / cm 3 0,98-1,02.
Mass fraction of water,%, not more than 1.5.
Mass fraction of volatiles,%, not more than 70.
Flotation - oxal corresponded TU 2452-029-05766801-94.
example 1
A reactor volume of 25 dm3 equipped with a jacket and a reflux condenser was charged with 1.5 kg of a composition of sunflower oil and 1.0 kg of oil AML pre-oxidized by the usual method to a viscosity of 80-120 s at (20 ± 0,5) ° C by viscometer VZ-246 (nozzle diameter of 6 mm), and 2.5 kg and flotation reagent - oxal. When the mixer in a nitrogen stream, the reactor contents are heated to 140-150ºS and it was added 5 kg of petroleum mark "B" Resin. Input petroleum resin is carried out at such a rate that the temperature did not drop below 140 ° C. Thereafter, heating was continued for one hour and the reaction mass was pumped into a mixer under a layer of white spirit, previously loaded in an amount of 5 kg. In the mixer and the stirrer in the atmosphere are azeta stirring for 30 minutes, then adding 0.9 kg of solvent. Luck was stirred for another half an hour, cooled to 40 ° C, 0.1 kg administered drier 64P and poured into a container, which is carried on the statement of the type of dry residue and the viscosity by adding a calculated amount of mineral spirits.
Ready paint is checked for purity by loading the sample on the glass. If necessary, it is purified by filtration.
example 2
The synthesis conditions of Example 1. Sunflower oil is replaced by 1.7 kg of linseed oil, oil is excluded AML and drier, loading petroleum resin 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 having a high performance.
CLAIM
A process for preparing an oil-resin varnish by condensation copolymerization of vegetable oil, a polyhydric alcohol, a polybasic acid and a modifier with the addition of the final process step a solvent, wherein said polyhydric alcohol is waste processing of high-boiling by-products dimethyldioxane flotoreagent oxal as petroleum resin modifier are used, taken in a weight ratio of vegetable oil: petroleum resin 4.1: 1.5, if necessary, use the lead and manganese drier 64P waste oil AML caprolactam production as a polybasic acid in the following component ratio, wt.%:
Vegetable oil 5-30
Petroleum resin 5-40
Flotation oxal 1-25
Oil under 0-15
This desiccant 0-2
solvent 35-45
print version
Publication date 18.01.2007gg
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