PROCESS FOR APPLYING UNDERWATER ANTI-CORROSIVE COATING USING WATER-REPELLENT UNDERWATER EPOXY MASS AND A FIBERGLASS JACKET WITH EPOXY RESIN

Description

1 / 4 “PROCESS FOR APPLYING UNDERWATER ANTI-CORROSIVE COATING USING UNDERWATER EPOXY MASS” "Water-repellent and fiberglass jacket with epoxy resin." FIELD OF APPLICATION

[001] This Invention Patent, belonging to the field of anti-corrosion processes, refers to an innovative process for applying an underwater anti-corrosion coating to be used on metal or concrete piles of submerged or non-submerged structures, focusing on the naval industry, oil exploration and production platforms, pipelines, submarine outfalls, structural piles in port construction and hydroelectric plants; in civil construction; and on concrete structures such as bridge piers. STATE OF THE ART

[002] The known state of the art shows that underwater epoxy putty has been used for years as an efficient anti-oxidant coating for metal jackets and waterproofing agent for concrete pillars in submerged port structures, always applied in the same manual and unproductive way, subject to climatic conditions and water visibility. Considering the deficiencies and difficulties mentioned, and for a perfect application of this already widely used two-component polyamide epoxy putty, the document PI0904974-6 was developed and filed by the same current author on 04 / 08 / 2009 and entitled “UNDERWATER COATING SYSTEM, UNDERWATER COATING PROCESS WITH INTEGRATED UNDERWATER EPOXY PUTTY”, referring to an antioxidant coating system composed of two-component polyamide epoxy putty for underwater application on metal piles or Petition 870250050602, dated 06 / 17 / 2025, p. 4 / 8 2 / 4 concrete, which serves as the component closest to the state of the art. BRIEF DESCRIPTION OF THE DRAWINGS

[003] For better visualization and understanding of the present process, the figures will be described below, which will be detailed later. Figure 1 shows the jacket lost before the application of the filler. Figure 2 shows the mass, consisting of two compounds, before being homogenized. Figure 3 shows the application of the putty to the jacket using a notched trowel. Figure 4 shows the appearance of the jacket after the filler has been applied. Figure 5 shows the jacket containing the mass being carried underwater by divers to the application site. Figure 6 shows the stake previously treated for the installation of the pre-marking ring to indicate the start of jacket placement. Figure 7 shows the jacket being installed on the stake, demonstrating the jacket's circular memory quality. Figure 8 shows the stripe on the edge of the jacket, indicating the overlap. Figure 9 shows the placement of a ratchet strap to secure the jacket to the stake during the curing time. Figure 10 shows the water-repellent action of the jacket, which expels the water present between the pile and the jacket. Figure 11 shows two piles with the jackets installed, awaiting curing time. Petition 870250050602, dated 06 / 17 / 2025, page 5 / 8 3 / 4 Figure 12 shows the removal of the marking rings and ratchet straps from the stakes after the curing period of the underwater water-repellent epoxy compound. DETAILED DESCRIPTION OF THE INVENTION

[004] In the present process, a rectangular plate preferably made of fiberglass-reinforced epoxy resin, called a lost jacket(1), is used, onto which a layer of an underwater anti-corrosion protection epoxy compound(3) of the model MES500JQT manufactured by the company Tecpox is applied with the aid of a toothed spatula(2). This compound is composed of a mixture of two components A(4) and B(5). After applying the compound(3) to the jacket(1), it is carried by divers(6) to the installation site, for example, a stake(7), which must be previously treated with hydroblasting or mechanical brushing and must receive a marking ring(8) indicating the exact starting point for the installation of the jackets(1). Subsequently, the jackets(1), which have a circular memory, are easily installed on the circumference of the stakes(7), with a perfect fit.The said jackets (1) have a preferred width of 1.5m and are equipped with an orange stripe (9) of approximately 4cm to indicate the overlap point and the beginning of the application of the subsequent jacket (1). The compound (3) gives the jacket (1) water-repellent quality, helping to expel the concentrated water between the stake (7) and the jacket (1) with the compound (3), facilitating its fixation and anti-corrosion action. Next, three ratchet straps (10) are installed on each 1.5 m jacket (1) to press the assembly against the stake (7) and allow the adhesion and initial curing of the compound (3), which takes around 5 hours, at which point the ring (8) and the straps (10) are removed, finalizing the process. CONCLUSION Petition 870250050602, dated 06 / 17 / 2025, page 6 / 8 4 / 4

[005] In conclusion, it can be stated that the present “PROCESS FOR APPLYING UNDERWATER ANTI-CORROSIVE COATING FROM WATER-REPELLENT UNDERWATER EPOXY MASS AND FIBERGLASS JACKET WITH EPOXY RESIN” is fully endowed with all the technical conditions to receive the granting of the Patent of Invention. Petition 870250050602, dated 06 / 17 / 2025, p. 7 / 8

Claims

1 / 1 CLAIM 1. “PROCESS FOR APPLYING UNDERWATER ANTI-CORROSIVE COATING FROM WATER-REPELLENT UNDERWATER EPOXY MASS AND FIBERGLASS JACKET WITH EPOXY RESIN” characterized by using a rectangular plate produced in epoxy resin reinforced with fiberglass, called a lost jacket(1), on which a layer of an underwater anti-corrosive protection epoxy mass(3) of the model MES500JQT manufactured by the company Tecpox is applied with the aid of a toothed spatula(2), this composed of the mixture of two components A(4) and B(5); because, after the application of the mass(3) to the jacket(1), it is carried by divers(6) to the installation site, for example, a stake(7), which must be previously treated with hydroblasting or mechanical brushing and must receive a marking ring(8) indicating the exact starting point for the installation of the jackets(1); because, subsequently, the jackets(1), which have circular memory, are easily installed on the circumference of the stakes(7);because said jackets(1) have a preferred width of 1.5m and are equipped with an orange stripe(9) of approximately 4cm to indicate the overlap point and the beginning of the application of the subsequent jacket(1); because the mass(3) gives the jacket(1) the quality of water repellency, helping to expel the water concentrated between the stake(6) and the jacket(1) with the mass(3), facilitating its fixation and anti-corrosive action and because, subsequently, three ratchet straps(10) are installed on each 1.5m jacket(1) to press the assembly against the stake(7) and allow the adhesion and initial curing of the mass(3), which takes around 5 hours, when the ring(8) and the straps(10) are then removed, finalizing the process.; Petition 870240109466, dated 12 / 23 / 2024, p. 9 / 18

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