RU1550919C - Preservative composition - Google Patents

Abstract

The invention relates to the production of anticorrosive compositions for preserving parts, spare parts and equipment D of various industries and allows to increase the protective properties of the composition and to reduce its consumption. This is achieved by using ManniXa as a phenolic base inhibitor based on nonylphenol and tetramethyldipropylene | triamine (1.5 - 2.5 wt.%) And synthetic fatty acids of the Cr, -C 25 fraction (- wt.%) In the composition containing polyisobutylene (0.05 - 0.1 wt.%), mineral oil (the rest). 5 tab.

Description

The invention relates to the production of anticorrosion compositions for preserving parts, spare parts and equipment in various fields of industry.

The aim of the invention is to increase the protective properties while reducing the consumption of the composition.

Example, The process consists of two stages:

preparation of a 1% solution of polyisobutylene in mineral industrial oil I-8A;

mixing a 1% solution of polyisobutylene in oil with corrosion inhibitors (Mannich phenolic base based on nonylphenol and tetramethyl dipropylene triamine FOM-9).

Preparation of a 1% solution of polyisobutylene is carried out in a C2P-800 NUR mixer, for which the P-200 grade was initially fully trained

the amount of 1 kg is served on the fingers and cut off from the rollers in the form of a tape. In a mixer containing 69 kg of I-8A oil, at 80-100 ° C, polyisobutylene swells and dissolves. Polyisobutylene is dissolved in the mixer within 16-18 hours. 2-3 kg before the end of the process is filled with 30 kg of oil. The uniformity of the composition is determined by rutting sample filtration in an amount of 1 kg through sieve No. 05.

Then, 400 kg of I-8A oil is loaded into the mixer and 50 kg of a 1% solution of polyisobutylene are fed. Stirring is carried out for 2 hours at 80 - 10 ° C. Dissolution control is carried out visually until a homogeneous composition without lumps and clots is obtained.

Inhibitors are sequentially loaded at intervals of 1 hour with constant stirring: FOM-9 15 kg, synthetic fatty acids

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fractions C2, -C15 5 kg “After mixing the components for 1 h, 736 kg of I-8A oil is added to the mixer. Final mixing of the finished product in the mixer is carried out for 1-1.5 hours at 70-90DC. The finished product, heated to 70 ° C, “passes through a metal mesh (mesh size J, l mm).

The components used comply with the following regulatory and technical documents: I-8A, I-5A and I-20A GOST 20799-75; SZHK41.45 GOST 23239-78; FOM-9 TU 38,407-343-86; polyisobutylene P-200 GOST 130303-73; regenerated oil VMP-23 TU 112-023-85

FOM-9 is obtained by the following technology.

PO g (0.5 mol) of nonylphenol is loaded into the reaction flask, FROM g (0.5 mol) of the technical fraction of tetramethyldipropylene triamine (TMDT) TU 38-502-48-83, containing 70-71 wt.% TMDT according to GLC , 7-8 wt.% Dimethylpropanediamine, 20-21 wt.% Polyamines, and 15 g (0.5 mol) of formaldehyde in the form of a 30% aqueous solution. The mixture is stirred for 1 h, after which it is kept at 70-75 ° С for 2 h. "After distillation of water under vacuum, 144 g of FOM-9 are obtained." Found: mol.m. (cryoscopically) 410; amine number 230.

Table 1 gives the formulations of preservative formulations,

Table 2 shows the data on the protective properties of preservation compounds.

0

Table 3 shows the data on the effect of the thickness of preservation compositions on the corrosion rate 08 KP

Table 4 shows the effect of FFA on the protective properties of the preservative composition BNIINM-PAV-31/87.

Table 5 presents data on the effect of the brand of mineral oil on the protective properties of the preservation composition VNIINM-PAV-31/87.

Corrosion tests of preservative formulations are carried out in accordance with GOST 9,054-75. Compositions on the surface of the samples are applied by dipping and can withstand 90 s at 20 ± 2 ° C. The coating thickness is determined according to GOST 9.045-75,

Claims (1)

The claims The preservative composition VNIINM-PAV-3 1/87, including mineral oil, polyisobutylene and corrosion inhibitors, revealing that, in order to increase the protective properties while reducing its consumption, it contains Mannich phenolic base based on nonylphenol and tet - ramethyldipropylene triamine and synthetic fatty acids of fraction C2 (-C, 25 in the following ratio of components, wt.%: Polyisobutylene Phenolic base Mannich Synthetic fatty acids fractions Mineral oil 0.05-0.1 1.5-2.5 0.5-1.5 Else Table I Corrosion rate 08 gearbox in the chamber G-4 (100 cycles), g / mg 6.36.0 Corrosion rate 08 KP-in the 32nd solution of NaCl, r / Mi4 Corrosion rate - Art. 03 KP at 4С ± 2 ° С, 96 & 2Z humidity and S0t (O.IZ) for 2 hours, 117.7 Aftereffect, holding for 48 hours at 80 ° C of the composition, removing it with solvent G, 44 hours, Z affected surface 5048 The protective effect of the composition of Art. 65 g under coating in HACEj, 24 h, Z88,992.4 Degree of embrittlement Art. 65 g coated  RACE medium, 24 h, Z10.17.2 Stationary potential under the preservation film (Art.3), MB-210-200 Protective properties (Art. 08 KP) of the affected surface, displacement KVg, 4 4, ZOO 1.3-10 1.1 95.6 48.9 5.8 31,2 23,4 - 1.3-10 1.110 0, 14.3-10 12.1 - 10 1.0 -10 5.4-10 2.8 10 17.3 72.1 63,217,4 40,4 27.6 LCI uv About VD VO 100 100 46 83 65 96.6 18.9 28.1 96.060.5 74.3 3.0. 80.2 76,2s-3,438,7 24.8 -200 -755 -690-465-465 -650 GO 100 100O17 fifty 715509198 T a fi l and c 3 Thickness, Corrosion rate μm Art. 08 KN in 3% NaCl solution, r / M h according to the invention- prototype 30 1.2-3.5 40 0.93.0 500.92.8 60 0.82.6 700.72.6 80 0.52.0 90 .0.31.21 1000.11.6 Table 4 Composition Corrosion rate, g / m h SJK kubovychG t balance FR., 6 Fr. С21-С 5 СЩ 1L $ Ei 9 Ј Art. 08 KP captive-System not which composition is stable, VNIINM-PAV-31/8736, 25, 0.9-10 cubic qc- in 3% solvent not NaCl% dissolved The composition according to example 3, SJK fr. C -, - Cv C, 0-C, 6, C2, -C (GOST 23239-78); VAT residue FFA C25 (OST 38.011-82-80). Tabl D Composition - Corrosion rate, g / m h I-5A G I-8A I I-20A VMP-23. Art. 08 KP under. -g film of composition 1, 0, 0.9-10 1.0-10 VNIINM-PAV-31/87 (according to example 3) Compiled by I. Khrustaleva Editor N. Korchenko Tehred L. Serdyukova Corrector O. Kravtsova Order $ 456, Circulation 284 VNIIIPI of the State Committee for Inventions and Discover at the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Rauska nab., 4/5 Production and Publishing Plant Patent, Uzhgorod, st. Gagarina, 101