Antifouling and anticorrosive paint

 

(57) Abstract:

The invention relates to protection from fouling in the conditions of the marine environment, can be used in the shipbuilding industry and hydraulic engineering construction and contains a film-forming base, exhaust managability the catalyst for hydrogenation of synthetic fatty acids, higher fatty alcohols, plasticizer and preferably zinc oxide and modifiers - adipic acid, acetylacetone, aniline, anilide, salicylic acid" acid and dioctylphthalate, solvent. Paint allows you to combine one part of anti-fouling and anti-corrosion properties, is environmentally safe and affordable. 2 C.p. f-crystals, 2 tab.

The invention relates to protection against fouling by marine organisms of the underwater parts of ships ' hulls and other hydraulic structures and can be used in the shipbuilding industry and hydraulic engineering.

Antifouling paints are currently the primary means of protecting vessels from fouling due to the simplicity of their use, availability, easy renewability, high economic efficiency.

With the local biocides the most affordable in this regard is the copper oxide (I). Usually antifouling paint contains synthetic film-forming (PSC-PP, a-15, polyisobutylene and other ), rosin, copper oxide (I), plasticizer, organic solvents [Gurevich, E. C. , Rukhadze E. G., frost, A. E. and other Protection against fouling, -M.: Nauka, 1989, S. 271]. However, antifouling paints do not have sufficiently high biological activity and do not provide long-term protection against fouling and corrosion in the system of underwater coatings, in addition, copper oxide (I) is an expensive drug.

The purpose of the invention to provide anti-fouling and anti-corrosive paints on the basis of chemical production waste. Usually antifouling paint is applied onto the surface pre-coated with primer and anti-corrosion paint. Thus, it is possible to simplify the technological scheme of the cover, limited to only pre-primer, and to achieve economic efficiency through the available raw materials.

This object is achieved in that paint, including synthetic film-forming, rosin, plasticizer, solvent, biocide contains managability catalyst, which is a waste chemical proizvodstva, Russia, heat-Resistant antiobrastayuschim polymer composition for coatings, M. CL. C 09 D 5/14, 1995].

The technical essence is the closest to the proposed invention antifouling paint KF-751 [USSR Author's certificate N 273905, M CL C 09 D 5/16, 1983 - protopi], which includes rosin as a film-forming base, the copper oxide (I) as a copper-containing biocide, salicylic acid, dibutyl phthalate - plasticizer, solvent-naphtha as a solvent. The effectiveness of the paint is achieved by reacting rosin with organic oxy acids, in particular salicylic acid, resulting in getting the paint to completely soluble in sea water, film-forming base and a service life of 12 - 18 months. However, due to the high solubility of copper oxide (I) in seawater, 100 times greater than the solubility of copper oxide (I) at pH 8, unproductively consumed. Accordingly, it is proposed anti-fouling and anti-corrosion paint, which contains as the film-forming base perchlorovinyl resin mixed with rosin and (or) pentaftalevyh varnish, as a biocide is used exhaust managability the catalyst for the hydrogenation sentencesteeni 1 : 4 in the following ratio of components, wt.%:

Film-forming base - 14,4 - 21,7

Exhaust managability catalyst - 6,0 - 39,0

Solvent - Rest

Preferably antifouling and anticorrosive paint further comprises a modifier and plasticizer is a compound selected from the group comprising acetylacetone, adipic acid, aniline, anilide salicylic acid and dioctylphthalate in a quantity of 0.8 to 6.0 wt.%. Preferably antifouling and anticorrosive paint further comprises zinc oxide in an amount of 8.0 to 9.5 wt.%, which acts as a synergist to improve antifouling properties of the coating.

Exhaust managability catalyst is neetilirovannyj a waste product of hydrogenation of synthetic fatty acids, higher fatty alcohols (passport Vneshneftekhim-103, index 54-U11). The quantitative composition of the exhaust manohararajah catalyst is not strictly constant, and varies depending on one or another party in the manufacture of the final product. It consists mainly of oxides of copper, chromium, barium, and small amounts of unsaturated and limit acid fraction C8-C12, higher fatty alcohols and AFI catalyst as environmentally safe biocide, it is necessary to conduct the preliminary preparation of raw materials, i.e., to modify JHC.

Antifouling paint XB-5295 (offer) is prepared in the usual way in a ball mill. Pre-alloy exhaust managability catalyst (MHC) with rosin at 160 - 185oC for 2 h, the resulting alloy is divided into pieces, loaded into a ball mill, enter the additives and part of the solvent. For 16 - 25 h carry out pereir, then add the resin PSC-drug remaining amount of solvent. Mix until a homogeneous solution in a ball mill to obtain a paint appropriate dispersion.

The following are examples of formulations of the proposed anti-fouling and anti-corrosive paint (wt.%).

Example 1. Formulation of paints, wt.%:

Resin chlorinated polyvinylchloride (PSC-HP) - 10,0

Pentaftalevyh lacquer (FLO-53) - 2,0

Rosin - 6,0

Managability catalyst (MHC) - 6,0

The solvent (solvent, butyl acetate in the ratio 1 : 4) - 76,0

Example 2. Formulation of paints, wt.%:

Resin PSC-LS - 12,0

Pentaftalevyh lacquer (FLO-53) - 2,0

MHC - 6,0

The acetylacetone - 6,0

The solvent (solvent, butyl acetate in the ratio 1 : 4) - 74

Adipic acid is 2.8

The solvent (solvent, butyl acetate in the ratio 1 : 4) - 75,0

The above formulation examples 1 to 3 is designed for paint application method pressure atomisation surface covered with primer FL-C and two coats of anticorrosive paint based on waste JHC, washed with isopropyl alcohol (THE 2332-008-17197708-93).

Example 4. Formulation of paints, wt.%:

Resin PSC-LS - 2,3

Rosin and 19.4

MHC - 39,0

The dioctylphthalate - 0,8

Zinc oxide - 8,0

Anilide salicylic acid - 1,5

The solvent (solvent, butyl acetate in the ratio 1 : 4) - 29,0

Example 5. Formulation of paints, wt.%:

Resin PSC-LS - 2,7

Rosin - 17,1

MHC - 34,1

The dioctylphthalate - 0,9

Zinc oxide - 9,5

Aniline - 1,9

The solvent (solvent, butyl acetate in the ratio 1 : 4) to 33.8

The formulations of examples 4 and 5 is designed for applying paint by brush or roller at a surface coated with a primer FL-C, for 3 - 4 hours to release the object in the marine environment.

The optimum ratio of components was chosen experimentally and on the basis of literature data. The efficiency of the ink was evaluated by determining the rate of leaching of copper from coatings, and tactically method for determination of copper in sea water. The efficiency of the dye was confirmed full-scale tests carried out on the basis of the southern branch of the Institute of Oceanology Russian Academy of Sciences.

In table. 1 shows the physico-mechanical properties of the proposed paint in comparison with the known [Reibman A. I. Protective paint coating. - L.: Chemistry, 1982, 230 S.].

In table. 2 shows the results of testing corrosion-protective properties of the proposed paint.

The coatings have good mechanical, painting, technical, mechanical and protective properties. The coating withstood all kinds of corrosive effects (elevated temperatures, moisture, salt fog, phase solution of sea salt) without changing the appearance. On the surface not detected fracture characteristic of the protective properties (rash, blisters, peeling, through corrosion, cracking).

1. Antifouling and anticorrosive paint comprising a film-forming base, copper-containing biocide, a solvent, characterized in that it contains as the film-forming base perchlorovinyl resin mixed with rosin and (or) pentaftalevyh varnish, as biocide - exhaust managability the catalyst gidrirovanny is lucetta in the ratio of 1 : 4 in the following ratio of components, wt. %:

Film-forming base - 14,4 - 21,7

Exhaust managability catalyst - 6,0 - 39,0

Solvent - Rest

2. Paint on p. 1, characterized in that it further comprises a modifier and plasticizer compound selected from the group comprising acetylacetone, adipic acid, aniline, anilide salicylic acid and dioctylphthalate in a quantity of 0.8 to 6.0 wt.%.

3. Paint on p. 1, characterized in that it further comprises a mixture of zinc in the amount of 8.0 to 9.5 wt.%m

 

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