JPS6143670A - Antifouling paint against marine life - Google Patents

Abstract

PURPOSE:To provide the titled paint containing a 1-3C alkane-polythiocyanic acid, and having antifouling effect against fouling animals and vegetables, and especially high activity to inhibit the adhesion of slime. CONSTITUTION:The objective paint can be prepared by adding an active antifouling component consisting of a 1-3C alkane-polythiocyanic acid (e.g. methanedithiocyanic acid) together with other paint components to a resin for paint (especially preferably an organometallic polymer). The amount of the antifouling component is preferably 3-50wt% based on the solid component of the paint.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides an antifouling paint that has the same antifouling effect as conventional antifouling paints for marine organisms and is highly effective in preventing slime adhesion. It is related to paint.

PRIOR ART Ship bottom 1 It is well known that animal or plant-based underwater fouling organisms, especially underwater fouling organisms, adhere and breed, resulting in great damage such as a reduction in the sailing speed of a ship and an increase in fuel costs. It is also known that the above-mentioned fouling organisms adhere to fishing nets.

Therefore, as a method to prevent this, antifouling agents such as cuprous oxide, tributyltin, triphenyltin compounds, organic nitrogen- or sulfur-based compounds, and organometallic polymers (IIMP) are added to the paint compositions applied to the bottoms of ships and fishing nets. A method is used in which an effective acid is mixed in and the amount of antifouling component required to prevent adhesion for a certain period of time is eluted into seawater. Currently, the purpose is achieved by using the above-mentioned antifouling active ingredients against animal-based fouling organisms such as fujibo, persimmons, zelpura, and sea squirts, and plant-based fouling organisms such as sea lettuce, blue seaweed, and seaweed. .

Problems to be solved by the invention However, conventional antifouling paints could not be expected to have a significant effect on the adhesion of seawater microorganisms such as diatoms called slime to ship bottoms and fishing nets. .

Means for Solving the Problem In view of the above circumstances, the present inventor has conducted intensive research and found that the present inventor has an antifouling effect against conventional animal and vegetable fouling organisms, and also against slime adhesion. The present invention was completed by discovering an antifouling paint for boat bottoms and fishing nets that has a high deterrent effect.

That is, the present invention resides in an antifouling paint for marine organisms containing a polythiocyanate alkane having 1 to 3 carbon atoms as an effective antifouling ingredient.

Examples of the polythiocyanate alkane having 1 to 3 carbon atoms used as the antifouling active ingredient of the present invention include methane dithiocyanate, 1,2-dithiocyanate, ethane acid, 1,293-
) Propane lithiocyanate, etc. can be mentioned, but
Particularly preferred is methane dithiocyanate.

The content of the antifouling active ingredient in the paint can be freely adjusted according to the required coating performance, etc., and is not particularly limited, but it usually contains about 3 to 50% by weight of the solid content of the paint. It is preferable to let

In addition to the essential antifouling active ingredients, the antifouling paint of the present invention contains conventional antifouling active ingredients such as cuprous oxide, triphenyltin compounds, organic nitrogen, sulfur compound OMF, and various herbicidal compounds as optional ingredients. Alternatively, insecticidal compounds and the like may be mixed and used, and the mixture does not cause any adverse effects and can exhibit a well-balanced effect in preventing the adhesion of various marine fouling organisms.

As the resin component used in the antifouling paint of the present invention, general resins for ship bottom paints are sufficient, and although there are no particular restrictions, oil-based resins, chlorinated rubber-based resins,
Synthetic rubber resins, vinyl chloride resins, organometallic polymers (
OMF), epoxy resin, etc. are preferably used. Among them, OMF is preferred.

Furthermore, the antifouling paint of the present invention may contain general paint pigments such as coloring pigments and extender pigments, various organic solvents, various additives, plasticizers, etc. in order to improve its effectiveness.

The antifouling paint of the present invention includes the ft fatty acid component pigment, an organic solvent,
It is obtained by mixing and dispersing additives, plasticizers, and antifouling active ingredients using a conventional dispersion method such as a ball mill or a sand mill.

The antifouling paint of the present invention prepared in this way is applied to the object by a conventional coating method such as brushing, rolling, or spraying.

Example Based on the formulation shown in Table 1 below, a mixed and dispersed paint was prepared using a ball mill in a conventional manner, and the paint was applied to an 8 x 203 vinyl chloride board by air spraying to a film thickness of 100 mm. @ The obtained test plate was placed approximately 3,000 meters below the water surface in Higashi-Kobe Port, Hyogo Prefecture.
Hang it on a regular basis to monitor flora and fauna. The state of adhesion of immu was observed. The results are shown in Table 2.

Table 1 (Numbers in the table represent parts by weight) Table 2 *(1) Triphenyltin hydroxide east (2) Organic tin acrylic copolymer Effects of the invention As is clear from Table 2, when the paint of the present invention was applied. Compared to those coated with comparative paints, the paints have excellent antifouling properties against marine fouling organisms such as animals and plants, and are particularly effective against slime adhesion, which could not be prevented in the past.

Claims (1)

[Scope of Claims] 1. An antifouling paint for marine organisms, characterized by containing a polythiocyanate alkane having 1 to 3 carbon atoms as an effective antifouling ingredient. 2. The antifouling paint according to claim 1, wherein the polythiocyanate alkane is methane dithiocyanate, ethane 1,2-dithiocyanate or propane 1,2,3-trithiocyanate. 3. The antifouling paint according to claim 1, wherein the resin component is OMP.