SU1420003A1 - Method of making coating compound - Google Patents

Abstract

The invention relates to a process for the preparation of a coating composition based on chlorosulfonated polyethylene. and can be used in the chemical, oil and gas industry to protect metal and wood structures, concrete and reinforced concrete structures operating in corrosive environments. The invention makes it possible to reduce the flammability of the coating by more than 2 times, to increase the adhesion of the coating in the electrolyte medium under the voltage of an electric current by a factor of 10 due to the method of preparing the coating composition by mixing 10-25% solution of chlorine sulfonated polyethylene complex compound - trizanthanolamine with chloride 1m zinc; ohm at a molar ratio of Zn C1 j:: N (CH, CH) 3 1: 2 and a suspension of aluminum powder in the chlorination product of n-alkanes C-C fg containing chlorine 38- 40% or in benzotrichloride or in a mixture of the above chlorinated product with carbon tetrachloride at a ratio of the starting components, wt.h: 10-25% -NYH xLor of sulfonated polyethylene in organic solvent 100, aluminum powder 0.1-10, polychloroalkane 5-30 and subsequent heat treatment at 80 s for 10-180 minutes 2 tabl (L G 4 ISO

Description

The invention relates to a method for preparing a composition for coatings based on chlorosulfonation polyethylene and can be used in chemical oil and gas industries to protect metal and wood structures of concrete and reinforced concrete materials operating in corrosive environments.

The purpose of the invention is to reduce the flammability of coatings and increase their adhesion in the electrolyte medium under the influence of an electrostatic floor.

Example 1: From a sample of dry HSPE with quality indicators TU 6-01-715-75 in an amount of 10 g. A 10% solution of HSPE in toluene is prepared. With stirring, the solution of the base without complications (quickly) is introduced in any order: 0.1 g of the crystalline complex compound (CS) with triethanol

Example s 2-6. Unlike Example 1, a 20% solution of CSPA in toluene was prepared. Under similar conditions —jQ VIAH modification of HSPA and curing of the coating, an average ratio of additives (formula 2) is used, the maximum for the complex compound (example 3) and aluminum powder (example) 5), mini30

on with zinc chloride 2 TEA 2pS1 and

A suspension of 0.1 g of aluminum powder in 5 mum of the latter is (Example 6), close to 1.5 g of polychloroalkane, and the amount is heated at a minimum and maximum of 80 ° C for 30 minutes. B as hporalkana (examples 4,6). If using shshralkan take the product of chlorination of hydrocarbons of normal structure of composition C. -C, g with a chlorine content of 3 6-40%.

Polychloroalkanes of composition C are the product of chlorination of n-alkanes. They are formed as by-products in the process of sulfochlorination of these hydrocarbons under the influence of a mixture of gases 50. and

Production of sulfonates (regulations

Volgograd software Khimprom).

Now such polychloroalkanes are chlorinated to a C1 content of 45-47% and 40%. They are used as a commercial product of the HP-470 brand according to TU-601-568-76 (the VPO Khimprom regulations). This is a viscous oil.

sixteen

KS and A1 are in quantities greater than 20. and 10 May. respectively in winners 3 and 5, the homogeneous mass is able to exfoliate at room temperature, or turn into a highly viscous gel (goat) at high temperature,

Example 7, 10, 11. The base varnish used is CP-734 in the form of a 20% solution of CSPA in a mixture of solvent and xylene with a residual (from the stage of synthesis of CSPE) carbon tetrachloride in an amount of 3.9-May. hours for 100 hours of polymer. For the preparation of a suspension of aluminum powder using 11.1 wt.h. polychloroprene (example 1); WHAT is in total with SCC. corresponds to 15 ma.ch. additives of similar nature; For the preparation of a homogeneous mass and the course of the process of modification of the uses) 1 soot elevated temperatures (examples 7, 11) and temperature (example;

This liquid, cn, 5, dp 192, is used mainly as a plasticizer for linoleum.

Prepared homogeneous mass is drunk on a substrate and dried at room temperature. The polymer coating can be applied with a brush or a bullet (10). Verifier. Example8. In contrast to the composition of the composition (per 100 h of CSPE) of the examples, the benzotrichloride is used as a polychloe and sample properties after curing the raspcan for three days (or equivalently in an amount of 10 mph.); 55 conditions of modification and curing, 24 h) are given respectively in the anal: OCI examples 2 and 4. Table. 1 and 2 respectively. Strength of Example 9. In contrast to the adhesion layer of the coating, 25% is prepared in the electricity meter 1 and 2.

Litter is evaluated according to the usual samples for adhesion (a homogeneous composition is poured between fungi, placed in

-.

form and cure under the described conditions), but additionally aged for 15 days, in a solution containing salts of sulfuric acid with a pH of 3-4 and simultaneously subjected to electric voltage with a current density of 30 a / dm. The physicomechanical properties of the samples after the year state in the light, i.e. resilience. Flammability, as the rate of flame propagation, is determined by the decay time.

Example s 2-6. Unlike Example 1, a 20% solution of CSPA in toluene was prepared. Under similar conditions, the modification of CSPA and the curing of the coating use the average ratio of additives (pattern 2), the maximum for the complex compound (example 3) and aluminum powder (example) 5), mini

the last one is (example 6), the number of poporhalkane is close to the minimum and maximum (examples 4.6). If used

the last one is (example 6), the number of poporhalkane is close to the minimum and maximum (examples 4.6). If used

KS and A1 are in quantities greater than 20. and 10 May. respectively in winners 3 and 5, the homogeneous mass is able to exfoliate at room temperature, or turn into a highly viscous gel (goat) at high temperature,

Example 7, 10, 11. The base varnish used is CP-734 in the form of a 20% solution of CSPA in a mixture of solvent and xylene with a residual (from the stage of synthesis of CSPE) carbon tetrachloride in an amount of 3.9-May. hours for 100 hours of polymer. For the preparation of a suspension of aluminum powder using 11.1 wt.h. polychloropkina (example 1), in total with SCC. corresponds to 15 ma.ch. additives of similar nature; For the preparation of a homogeneous mass and the course of the process of modification of the uses) 1 soot elevated temperatures (examples 7, 11) and temperature (example;

ten). Example 8. In contrast to the pre-solution of hePE in xylene, polychloroalkane (Example 1) is used in a maximum amount of 30 parts by weight. The modification is carried out at 80 ° C for 10 minutes (to the viscosity of the mass, which is close to example 3). With a higher content of polychloroalkane, the flammability increases, adhesion and other coating parameters decrease.

 12.13, 14 (control). Formulations are prepared without the addition of the complex compound and aluminum powder (cf. examples 1 and 6). The absence of the addition of a polychloroalkane impairs the properties of the coating or makes it difficult to prepare a homogeneous mass when dosing the additives in the base solution. So, in example 14 1.0 mac. PAK-3 aluminum powder cannot be quickly introduced into varnish XII-734 (with residual CC1f 5 mas.h. per 100 h. HSPE) due to its larger volume and poor wettability. To evaluate the composition - properties under the compared modification conditions, the sequence is used: varnish is added to the aluminum powder at 20 ° C and stirring in portions, i.e. prepare its suspension in a solution of CSPE, add the CS and heat the mass to.

In tab. 1 and 2 numbered 15 and 16 show the composition of the system and the test results of known compositions.

Thus, the adhesion of the coating to the metal after processing the samples in the electrolyte medium under the voltage of an electric current varies significantly, whereas in known compositions it decreases by a factor of 10.

0

five

The flammability of the coating is reduced by more than 2 times.

Claims (1)

Formulaisable shadow, A method for preparing a coating composition by mixing 10-25% no 1 of a solution of chlorosulphate polyethylene in an organic solvent with a complex compound based on a bivalent metal chloride, so that, in order to reduce the flammability of the coating and increase them adhesion in the medium e: / ekrolit when exposed to an electrical current, as a complex compound is used, the compound α-triethanolamine with zinc chloride at a molar ratio of 1: 2, in the composition during the mixing process are additionally introduced spenziyu aluminum powder yolihloralkame chlorination product of n-alkanes - C ,. with 5 chlorine content of 38–40%, or benzotrichlorchtse, or in a mixture of the specified product of chlorination with four-chlorine carbon at a ratio of initial components, mac.h.:. 10-25% solution. chlorosulfonated polystyrene in organic solubility. tele -. Complex compound Aluminum powder Polychloroalkane 0 0 five 100 1-20 0 And mixing is carried out at 20-80 ° C for 10-180 minutes. 0.1-10.0 5-30 during