SU1758056A1 - Composition for tentative protective coating - Google Patents

Abstract

Use: temporary protective coating. SUMMARY OF THE INVENTION: The composition contains MS-25 or MS-80 alkyd-styrene varnish 35.0-40.0 wt.%, Petroleum-based lacquer resin 4.0-8.0 May. %, anticorrosive additive sulfonate type C-150 8.0-11.0 wt.%, lanolin or wool grease 8.0-11.0 wt.%, wax brown 1.0-2.0 wt.%, organic solvent else. Petroleum resin paint, lanolin or wool grease, brown coal wax and organic solvent are mixed at 80-90 ° C, cooled, MS-25 or MS-80 alkyd-styrene varnish and C-150 sulphonate type anti-corrosion additive are added and mixed. 2 tab.

Description

The invention relates to compositions for the protection of metal, paint and varnish and chrome-plated surfaces from corrosive environments, including to protect the surfaces of the lower part of the car body from the corrosive effects of salts in the winter.

During the operation of the car in winter, the paintwork and chrome-plated body parts are adversely affected by road salts and weather conditions: snow, wind, and light. The process of metal corrosion in places of damage to the coating (scratches, chips, etc.) is also significantly enhanced.

A means is known for temporarily protecting painted and unpainted metal surfaces, especially in winter, during their operation from moisture and other sources of corrosion based on phenolic resin, wax components, solvents and additives.

However, this agent forms a film that is difficult to remove during depreservation. It is removed only with organic solvents.

It is also known to protect metals from atmospheric corrosion based on synthetic phenylpropane resin, modified rosin and esterified with glycerol, semi-solid synthetic wax, petrolatum, residue fractional distillation of mineral oils, organic solvent, plasticizer, and other additives. The film created by this medium is fragile and unstable to salt for street dressing in winter.

The closest in technical essence to the invention is the autofield 4 SP 00 O SP O

the role of preserving in aerosol packaging. It has the following composition, wt.%: Oil paraffin 4,0

Phenol formaldehyde resin (Oktofor P orm.101K) 4.0

Calcium sulfonate concentrate (CSC) or additive C-1501.6

Ceresin m.75 or m.800,15

PMS-400 or PMS-2002,0

PES-51,0

Industrial oil M.I.-12A1.0 Nefras C4-155 / 200 or white spirit 86.25 Aerosol product is obtained at a ratio of 60-50% of the product and 40-50% of the propellant.

The disadvantage of this tool is the low protective ability of the paintwork surface of the lower part of the car body from weathering in winter. In addition, it practically does not protect against the effects of road salts in the winter.

The purpose of the invention is to increase the protective properties of coatings.

The goal is achieved by the fact that the composition for a temporary protective coating, including a binder, an anticorrosive additive of sulfonate type C-150, wax and an organic solvent, as a binder, contains an alkyd-styrene resin in the form of varnish MC-25 or MC- 80, as a wax - a brown coal wax and, additionally, a petroleum resin paint, lanolin or wool grease in the following ratio of components, wt,%:

Alcoholic paints varnish MS-25 or MS-8035,0-40,0

Petroleum polymer coating resin 4,0-8,0 Anticorrosive additive sulfonate type C-1508.0--11.0

Lanolin or wool fat 8.0-11.0

Brown coal wax1,0-2,0

Organic

solventOther

Alkyd varnishes are used as a binder: lacquer MC-25 (TU 6-10-1403-78) or lacquer MS-80 (TU 6-10-937-70).

The lacquer is a solution in xylene or a mixture of xylene with turpentine of an alkyd-styrene-based alkyd resin modified with a mixture of drying or semi-drying tung oil - non-volatile content 40-44% (varnish MS-25), or solution in xylene styrene and alkyd, modified with a mixture of semi-drying oil with castor oil, dehydrated in the process of synthesis - the content of non-volatile substances 42-46% (varnish MS-80). Lucky MC-25 and MS-80 form a uniform drying film. To improve the strength properties

0 film is used petroleum resin coating (TU 38.10916-79). The optimum amount of alkyd styrene varnish is 35.0-40.0%. With a lower content of its deteriorated drying

5, with a larger increase in viscosity of the solution and the product is poorly applied. The optimal amount of petroleum resin paint is 4.0–8.0%. With a smaller amount, they deteriorate.

0 strength characteristics, with an increase in poorly applied and uneven film is obtained.

8 quality components that give protective properties, used lanolin

5 neutral (TU 17-61-03-1-84) or anhydrous lanolin (GFK to become 373), or wool grease (OST 17-449-81) and C-150 additive, which is a colloidal dispersion of calcium carbonate in oil And -20A,

0 stabilized with calcium sulfonate (TU 38.101685-84). Limit values of lanolin or wool fat are 8.0-11.0% and C-150 additives 8.0-11.0%. As the amount of lanolin or wool fat is increased, the viscosity of the solution increases dramatically; a non-drying film is obtained; as the amount decreases, the protective properties of the film deteriorate. To ensure optimum protection

0 properties additionally introduced additive C-150.

As a thickener, it is proposed to use raw brown coal wax (TU 39-232-86). The desired effect is achieved.

5 when the wax content of 1.0-2.0%. An increase in the amount of brown coal wax leads to the structuring of the composition, a decrease in the liquefaction of the composition and run-off from vertical surfaces during application.

0 The organic solvent used is xylene coal (GOST 9949-76) or petroleum xylene (GOST 9410-78), or a mixture of xylene with C4-155 / 200 oil (white spirit) (GOST 3134-78) (2: 1 ).

5 PRI me R. An organic solvent is loaded into the apparatus, equipped with a stirrer and heater, a stirrer, heating and petroleum resin, lanolin or wool grease, lignite wax is charged.

Stirring is carried out at 80-90 ° C until complete dissolution of the loaded components. After that, turn off the heating, load the varnish MS-25 or MS-080, additive C-150 and mix for 30-40 minutes, then packaged.

Data on the development of the optimal content of the components of the tool are given in Table 1.

The test results of the proposed composition for each example in comparison with the known are given in table 2.

Claims (1)

The invention Composition for a temporary protective coating, comprising a binder, an anticorrosive additive of the sulfonate type C-150, a wax and an organic solvent, characterized in that, in order to improve the protective properties of the coating, As a binder, it contains an alkyd-styrene resin in the form of MS-25 or MS-80 lacquer; as a wax, brown coal wax and, additionally, a petroleum-based lacquer resin, lanolin or wool grease in the following ratio, wt.%: Alkyd styrene varnish in the form of varnish MS-25 or MS-80 35-40 4-8 Petroleum polymer paint resin Anticorrosive additive sulfonate type C-1508-11 Lanolin or wool grease8-11 Brown coal wax1-2 Organic solventErest Table 1 table 2