SI8711102A8 - Process for obtaining composition with anticorrosive effect for metals - Google Patents

Description

-he will know in the process of obtaining co-positions in the Basis eetaisik Jestie, whose solutions they use to overcome the setalue anti-corrosion substrate. n of the remainder of the solutions obtained Is in their oetiyiveti millet foaming.

Procedure If the present invention is resolved The excess of the * anti-kerosiorids behavior prior to pulling the suttle Because the process of obtaining such a capsition as the stable density and the bark is deposited is applied "

In the fight against corrosion, they use eo conposioia on bass metal sixes, aroasic acid solution, glycol polysers and yeast jelly. Thus, the Iraqi patents 2 00b 770, and 2 149 4p4, as well as the European patent 0 017 243, 1 Iraqi patent 2 5 ~> 1 &&& describe the obtaining of "these types of cospesis and ttsaus & quarrels of procedures and co-oposios" splsisa pokesalo Is ssdjutia their big * oeetljiveet prosa bid. Indeed, the terms and conditions of these fees bring with them * introductions of the chioo esulstj * vasdub-raetvor 'is created, and the resulting superficial frapon and viscosity of these keapesias produce the extraction of "air *" The devices press the nuts *, but with the skins remove the peas in the layer.

Description of the regad technical problem with sriaaglaa isvoije-Ja xouiii> the applicant of this application made a nail finding problem aa obtaining co-opesion nu basi »permanent particles whose solutions are stable and when conducting eetalue substrate for corrosion protection there is no leakage of the procedure is started from lu-40 »* e *% - * in relation to koaposi · oil * particles» molten zinc * uluaikljun or kedaijvna «or their alloys, of which. with ra ^ iui paste with 0 * 1 to 10 aas.> means against the st varanj a of the ashur's kee ae consists of fractions., ^ fte with boiling point isaedju luO ° O and 200®C pozuati »Ju © sbits-epirit, add with 1 to 12 aaa «£ hreans or boric acid with anticorrosive« effect »as well as 2oQ or CoCGj de 4 ms *> ea effect» of the stabiliaator and pH regulator. a? ri toaw are used as r ^ utv ^ rays of high keyhole points using 7 to> 0 suav polyols or felicol ethers and a porous organ ski r-st witch compatible with piOtbo & ai »acetyl ethyl glycol up to IC ms.>. and in addition to this & is added 1 * 5 to 3 »« «·> e the same rovers & ski aktivOg SrO ^ StV ^ i * ϋ *) Λ 0 ~ -WU i * sA.-O 'wX..x V · nip the proverb ae . so ο -.- οαΙ. '. o the cosposition with satikorosioai and the' effect 'of © bligooje metal substratepr * cheau is a composition of etable density and anger of aebur. co-position contains nnjisa & is

a) metal in frequency *

b) bonic acid or one of its derivatives,

o) boric acid> u or one of n is - .. ib derivatives *

d) vnite-epi-type sealant, -n oil fraction *

e) pfi regulator, i cin oxide * cobalt carbonate «

f) high boiling point solvent of type polyol or glyco ether *

g) organic solvents of the derived solubility parameter of solubility, b) a system of some surfactants containing at least water-soluble surfactant and white-spirit soluble surfactant, and i / water.

The use of whito-spirit in the Composition of the Anti-Coronal Layer allows it to be improved in a practical manner by the use of the compositions according to the invention when applied to a metal substrate, as will be shown in the examples, without prejudice to the good characteristics of the obtained layers.

Certain variants of the compositions described below may be taken into account by reference in particular to the petition 1 requirements aa pateatims mentioned above. Unless otherwise stated, percentages are by weight.

The press of the invention can use any metal or alloy having a normal negative electrode potency1, at an absolute value higher than the iron value. In particular, it may be about zinc, kedmium and their mixtures or alloys, for example with nickel, iron or cobalt. According to the invention, zinc or aluminum or their alloys, in the form of ^r 3 particles or flakes / flakes, are used in particular. the invention may also use a mixture of zinc and aluminum particles.

The size of the metallic particles ee on the j is adjusted to the classical bias for this neck of the autorcorrhizal composition.

According to the invention, the precious metal may also be added in the form of a paste containing a virgin metal and a liquid aeate. Particularly, children can use pastes containing about 85% to about 92% by weight of broom · 1 about 3 to about 155 * weight white-spirit ~ e · vhite-spirit, which, as seen and acted against, creates bubbles, knives, etc. to be added at least 88 congratulations with metal or independently · Fits into the composition at about O «l / to about 10 ^, not fitting from about Q» 5 ^ to about 6 ^ ·

Leathers use plain white-erythrite, that is, fractions derived from the distillate of oil, having a boiling point between 80 ° and 2CG ° C, and consisting of different aliphatic and aromatic carbons (for example, 15% aromatics) ·

Other essential elements of the invention are chromic and / or boric acids, which are commonly used in this type of compositions, "useful for their anti-corrosion properties, 1 which add up to from about 1 to about 12% of the composition."

As the pH regulator useful for the stability of the composition according to the invention, the most suitable zinc oxide or cobalt carbonate is used, whereby the pH regulator enters the composition pm about 0.5 to about 4 /. The high boiling point solvent permits, after application of the composition and at the time of construction, by evaporation, a uniform anti-corrosion layer was created. In addition, the axis permits the transformation of chromium VI into heom lil, and other oxidation-reduction reactions that play out during layer formation.

In particular, a solvent such as a polyol or glycol ether type, such as dipropylene glycol, can be secorous. This boiling point solvent enters about 7% to about 50% by weight of compositions ·

The genus of water · vhlte-splrit and high boiling point restorers, the compositions of the invention comprise an auxiliary restart of a parameter of a particular restgorljlostl that permits the match to mix the vhito5 spirit in the middle. In order to be able to rent this power, the parameter of the formation of the vapor solvent is transferred to the invention between the creation of the white spirit and the solubility of the high boiling point solvent. which ioa pa rete e tar dissolves the jility between 9 1 1? «primarily Ιϋ.δίΐ. The amount of midnight solvent is primarily less than the amount of white-spirit-β, that is, dreams of about C.5 / ^J and about 1O> weight compositions, preferably about 0.5 and 6 $, respectively.

As an adjuster of a solvent suitable for the press of the invention, other solvents can now be provided with a solvent compatible with the gl and col ether, white-spirit and chromic acid solvents. use ethyl glycol acetate 111 acetate «ethylene ether propylene glycol / Dovanol /,

The single presence of water and white-spirit, requires the presence of a surfactant system that enables it to provide good wetting properties and film trimming. This system contains at least one surfactant dissolved in water on the one hand and at least a surface on the other. altruism is dissolved in white-spirit, Ka j is suitable for non-ionic surfactants.

Water-soluble surfactants typically have an HLB value greater than 10, of order of magnitude 12.5, for example, while others not soluble in water or soluble in aromatic and / or aliphatic solutions have an HLB value zero of 10, order of magnitude for example 8.7.

The surfactant composition of the invention comprises about 1 to about 5% by weight of the composition.

According to the invention, suitable surfactants can be used

dissolved in water.

Finally, as an example of an arbitrary element, other ingredients may be added to the composition, such as thickeners, which allows it to be better fabricated and / or solid lubricants that enhance the mechanical properties of the resulting layer.

A non-ionic water-soluble polymer may be used as a thickener, for example, hydroxyethyl cellulose, potency and other thickeners, especially cellulose can be predicted, provided that they are co-tibile with the presence of chloro acid.

According to the invention, about 0.1% to about 4% by weight hydroxyethyl cellulose can be added. When thickeners of different molecular weights are used, the weight fraction shown below changes.

As a solid agent, the term mercury can be used as in other aqueous anti-corrosion compositions. TZ .; or Ko Trema compositions may contain up to about 1Q.j solid lubricant.

ironclad refers both to compositions where all the constituent ⁰ * is * mixed, as well as to the compositions given in the form of different constituents of specially treated ones, as well as of compositions in the form of PRESETS of different constituents. The various constituents are generally mixed before the axial substrate is to be applied, in the form of at least two extensions, one in the aqueous medium and one in the organic medium, as will be seen in the example.

-7 The composition, for example, has ee uses in classical coating processes for metal substrates, especially steel substrates, cast iron, sintered steel.

The coating of the substrate is performed by each method applied, for example, by tapping or applying with a gun Ja, and then the coated substrate is heated to a temperature for a suitable time until the coating on the substrate hardens, with the heating causing particular solvent evaporation and internal chemical reactions that allow it to reach to creating a coating. Warming can also be done by draining, spinning B for example when it comes to screw pieces in particular.

The rewinding can be accomplished in several layers, whereby the application and curing steps are then performed several times, to obtain the desired coating thickness.

As in conventional overhanging processes, the substrates can be treated, ingested with gGdnc, for example by alkaline exfoliation, followed by flushing ·; and m icing by sandblasting.

As soon as this, the coated elements can be subject to other later rites, such as varnishing, looking, coloring.

corp positions containing white-spirit after finding a platoon of "3o Evening Product Stability, During Usage, Especially ^Who?" ^ -shenn in the line, thanks to a better mastery of the yeast properties in time. In addition, they provide a better ability for Industrial Cornice Surface due to better tuning / voltage, due to the stability of their density and the absence of sand.

- g '

Density stabilization avoids centrifugation adjustment over time · For the same, for those centrifugation conditions, constant guetine allows always the same to be deposited at the same coating density ·

Finally, the distributions and appearance of the coating which the compositions of the invention allow it to obtain on the substrates to be coated, especially the metal substrates containing the nozzles, are better compacted, the absence of blisters, and the thickening of the thread or the machined end. Therefore, the mechanical reform n and the corrosion resistance of the coated substrates are improved, and losses are reduced due to 3cards ·

Therefore, the present invention also relates to the metal substrates of the uncoated emtAkemeem® anticorrosion coating by a train which is due to the heating of the composition according to the invention after wearing it at said scratch. This is especially the case of screws, studs, nuts, clasps, or a piece of deep drawn Steel, cast iron or sintered Steel, especially elements of domestic auto-kerosene ries and household electrical appliances.

Other features and strengths of the invention will be apparent when reading the printer below and in the accompanying figure · julNLR 1 to 4 j riaeri compositions with white-splrit-oc

- 9 - Primor 1 Primor 2 Primor 3 Primor 4 Zinc flakes 2c 20 30 17 AluniniSi flakes Jipropylene plicol ic 15 20 15 Ethyl glycol acetate Γ > 4 2 4 Vhite spirit fX ./ 3 2 3 Seed 934 1 0.7 o, 5 0.7 Kerne opal 34? 1.6 1 1.5 1 Water 51.9 56.8 35 5C.8 Hrocica acid 3 3 4 3 Zinc oxide 1 1 2 1 Boric acid 1 1 2 1 From ... j '> o.5 0.5 1 0.5 ICC hunting lo «; 100 .. 'hite spirit contains 13 y a roso ra, which distills between ju 150 i

^ 'ΛΛΪ — iit 9

Apparently, the foaming _t does not imply the following density measures allow one to see the effect of the presence of white-. pyrite «« on leaving in the bathroom anticorrosive composition.

- 10 -

Density at the beginning Oh Oh 1 min. 2 h 5h 4 h 6 h 8 h A 1.55 1.26 1.28 1 * 29 1.29 1.50 1.51 3 1.55 1.28 1.52 1.55 1.55 1.54 1.55 C 1.55 1.29 1.55 1.54 1.55 1.55 1.55 D 1.55 1.29 1.54 1.55 1.55 1.55 1.55

A - Reference composition without white-spirit without mechanical release outside the self;

B - The reference composition without white-spirit is mechanically relegated to it

C - Zinc compositions in paste, top-spirit 2 ^;

D - Zinc powder compositions, vhite-spirit 2λ;

renneting is caused by deliberate stirring of the pulsator for one minute. The presence of white-spirit significantly affects the foaming.

χ n -l -rt 21 o

The Density Stability Observation of Figure 1 represents the time / days / density densities of the anti-corrosion composition, on a constantly dry extract.

A vhite-spirit / O / composition keeps the density at exactly constant levels for four days. The other two compositions /

The Dacromet standard /, whose results are given in addition to the yen, show that their density decreases over the same time period.

-lOaPRIMERS 7 and 8 ^D 2hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Anti-corrosive & white-spirit compositions obtained from two groups of components, metal pastes with organic components and solutions of inorganic components.

Paste ingredients are expressed as a percentage by weight of the weight of the anti-corrosion composition.

Paste Making Components Example 7% by weight Example 8% by weight Zinc flakes 14 - Aluminum flakes - 15 White-spitit, 100-200 ° C oil fraction 5 6 Dipropylene glycol 14 15 Ethyl glycol acetate 5 5 Nonylphenol oxyethylene 1 2 Hydroxyethylcellulose - 2 Lubricant, MoS ^ 1 6 Solution Making Components Example 7% by weight Example 8% by weight CrO ^ 5 6 H ₂ BO _x 5 5 5 6 ZnO 1 2 h ₂ o 55 55

The metal flakes are 20-40 / um in size and about 0.2 yum thick. White-spirit contains about 15% by weight of aromatics, has a flash point of 55 ° 0

To make the paste, a paste is made in the mixer at ordinary room temperature, with the addition of other components as well as further mixing. The paste can be stored until use.

The liquid part of the composition is a solution formed by gently stirring the components at room temperature. It can be stored.

For praktičnu primenu mešaju the medjusobno paste and the solution at tempera- tures ¹ Koja amounts of 25 to 27 ° C, iu stream mixing egzotermna reaction inlets kompoziciju to a temperature of 52 ~ 54 ° C.

η-1102/87 (11201)

Nypoyol.ini is known in the art of the invention

Coated parts of stainless steel, parts of electrical appliances or car bodies. The anticorrosive coating coated with the composition is degreased alkaline, rinsed and washed with micro blasting. This removes grease and impurities from the surface. The main metal constituents of the anti-corrosion composition applied to the metallic moieties are zinc flakes 0.2 ^ um with 20-40 / Um. The composition contains from 10-40% wt. of this metal, and previously made of zinc swirls with solvent white-epibit, ca 92 wt. jb flakes of cin ka were taken 8 wt.% white spirit and paste was made, tfhite-spirit in the composition acts as a foaming agent. To make a paste composition, $ wt.% Of chromic acid and 1 wt.% Of boric acid were mixed, 1 wt.% ZnO was introduced as a pH regulator, and a 10% wt. dipropylene glycol as well as organic solvents 5% wt. ethylglycol acetate. 52 wt. % water. The white-spibit fraction used is oil between 150 and 195 ° C and has a copy point of 35 ° C.

The coating of the substrate was done by soaking. · The slurry was then heated to 200 to 300 ° C in the slurry. · The heating was continued for about 20 minutes, during which time the solvents evaporated and internal reactions were completed so that the coating was solid. The thickness of the dried film coating is about 5 / Um. about 0.2 mil.

Claims (1)

PATENT APPLICATION 1. A process for producing a corrosion-inhibiting composition for coating a metal substrate, wherein the metal-based composition is compact and bubble free, characterized in that 10-40% by weight of zinc or aluminum metal particles, preferably zinc flakes of size 0.2 20-40 [mu] m by weight of paste containing 0.1-10% by weight, preferably 0.5 to 6% by weight, of blisters made from an oil fraction having a boiling point of between 100 and 200 ° with a content of about 15% by weight of aromatic constituents and a flash point about 35 °, such as white spirit, and then the paste is then ground with 7 to 30% by weight polyol or glycol ether, in particular dipropylene glycol, 0.5 to 10% by weight of ethyl acetate acetate, and 1.5 to 3% by weight of surfactant are oxyethylated nonylphenols and then combined with 1 to 12 3% by weight of chromic or boric acid, 0.5 to 4% by weight of ZnO or CaCo, and optionally with 0.1 to 3% by weight of thickening agents V 'f in particular hydroxyethyl cellulose and optionally about 10% by weight of a solid lubricant such as M0S2, and supplemented with water.