Page 14: of Maritime Reporter Magazine (February 1989)

Marine coatings & corrosion control

Last year, the U.S. Senate passed the "Organotin Antifouling

Paint Control Act of 1988" which controls the application of tributyl- tin (TBT) antifoulings in the U.S.

In response to this new legislation, several major marine coatings sup- pliers have introduced new TBT- free antifoulings. Additionally, a number of coatings suppliers have also expanded their marine lines with the addition of new, high tech- nology products.

The following is a brief overview of the latest products and services introduced by the major suppliers of marine coatings and corrosion- control systems. This review is based upon their responses re- ceived as of press time.

FOR MORE INFORMATION

If you wish to receive additional information on any of the products or services described in this review, circle the appropriate reader service number(s) on the postage-paid reader service cards near the back of this issue.

AMERICAN ABRASIVE

METALS

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American Abrasive Metals Com- pany, Irvington, N.J., is offering free literature on its multipurpose, res- in-based safety coating which can be applied to floors, stairs, ramps, and decks aboard commercial boats.

Known as Epoxo, the improved safety coating is particularly useful to marina operators and commercial fishing boat owners to reduce haz- ardous slippery conditions.

The company reports that main- tenance personnel will find cleanup fast and easy since Epoxo is unaf- fected by harsh detergents. Depend- ing on location, Epoxo can be ap- plied by roller or trowel over prop- erly prepared concrete and steel to protect these surfaces against spills such as water, oil, solvent, grease or hydraulic fluid, while providing sure footing to personnel.

Epoxo acts as a barrier against surface penetration by spills and can withstand cracking or disinte- grating under heavy vehicular and foot traffic.

AMERON MARINE

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Increasing concern over the use of tributyltin (TBT) antifoulings and their release of tin into the marine environment, has resulted in UBEM

NV of Antwerp, Belgium, specifying the application of an Ameron Ma- rine tin-free antifouling for its 170,000-dwt bulk carrier Belval.

As part of the vessel's scheduled underwater hull maintenance and repair work, its previous Ameron organotin A/F system was over- coated with Amercoat® 70 ESP, a tin-free self-polishing antifouling.

The generally good and clean con- dition of the boottop, vertical bot- tom and bottom flats meant that only a limited amount of abrasive blasting was required, particularly to prepare areas which had suffered mechanical damage.

Bare metal areas were treated with a touch coat of Amerlock® 400

Aluminum, and then a touch-up coat of ATMC 540 High Solids Vi- nyl Tar, to provide the vitally im- portant anticorrosion protection.

This treatment provided the base for two touch-up coats of Amercoat 70 ESP antifouling, at 80 microns each, followed by a full coat at 100 microns.

Chlor-rubber primer and finish coatings for the topsides were also supplied by Ameron Marine Coat- ings.

Amercoat 70 ESP is a high-per- formance, tin-free antifouling, mar- keted and sold by Ameron to market segments and customers who need and want this product as an alterna- tive to organotin copolymer anti- foulings.

According to a spokesman for

Ameron Marine Coatings, its prod- uct research and development has not stopped with tin-free antifoul- ings. It is highly conscious of the growing worldwide concern with problems related to ecology and the environment, and is continuing to work on low toxicity and non-toxin alternatives to both tin and copper- based antifouling products.

CTI COATINGS

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CTI Industries, Inc., Fairfield,

Conn., recently formed a new coat- ings division, CTI Coatings, which will specialize in the formulation and application of high-perform- ance coatings for high value and critical items.

Staffed by a unique group of engi- neers, estimators and applicators,

CTI Coatings offers extensive expe- rience in marine, power generation and chemical processing engineer- ing. Jeff Longmore, the newly ap- pointed division manager, has more than 20 years of technical and plant management experience in the ma- rine and industrial coatings indus- try.

CTI Specialty Coatings are for- mulated to provide superior anticor- rosion protection and repair for all exposed surfaces. Heat exchanger interiors, steel and concrete tanks, hulls, rudders, pumps and housings, exhaust ducts, piping, and FRP structural repair are but a few of the uses for CTI's high performance coatings.

CTI specializes in quality con- trolled on-site application. Recent investments in new application and test equipment and the introduc- tion of new structural repair pro- cesses, further strengthen the firm's commitment to providing high qual- ity, turnkey coating systems. The firm also recently expanded its

Stratford, Conn., plant with the ad- dition of an extensive blasting and coating facility. The facility is equipped to handle abrasive blast- ing and coating of objects up to 10,000 pounds.

CTI Industries is a full service organization providing restoration and preventive maintenance service and products for heat exchangers, condensers and associated equip- ment.

Operating worldwide, CTI serves major utilities, refineries, chemical processing plants, the merchant ma- rine and the U.S. Navy.

DEVOE COATINGS

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A world leader in high quality technologically advanced protective coatings, Devoe Coatings Company, with a history dating back to 1754, is one of the oldest corporations in the

U.S.

Devoe Coatings offers a complete line of proven performance VOC compliant coatings extending from alkyds to urethanes.

Catha-Coat 318 is a solvent base inorganic zinc primer. Its 3.19 pounds/gallon VOC meets solvent emission requirements. The compa- ny claims it can be recoated in less than two hours, and it is virtually impossible to make this coating mud crack or produce top coat bub- bling.

Bar-Rust is Devoe Coatings' trademark for a series of unique, advanced technology epoxies. These products can be utilized above and below the waterline. Most have low temperature cure and recoat times of less than four hours. VOC for this advanced technology line are 2.4 pounds/gallon for Bar-Rust 235, 1.41 pounds/gallon for Bar-Rust 236, and 2.72 pounds/gallon for Bar-

Rust 239.

Devoe has developed a group of 100 percent solids epoxy coatings that are mixed and applied with standard painting practices and equipment. There is no expensive plural equipment required to obtain epoxy materials with a VOC of "0".

These materials can be applied up to 1/2-inch thick and provide excel- lent abrasion and water immersion resistance. Devran 184 is a 100 per- cent solids epoxy tank coating. Dev- ran 188 is a 100 percent solids epoxy hull coating, particularly effective on icebreakers. All of Devoe's 100 percent solid epoxies have a "0"

VOC and yet a working pot life of two hours.

Devran 646 and 648 are Devoe's water-base epoxies. These unique coatings have a VOC of less than .5 pounds/gallon. They can be used as not only exterior coatings, but as tank linings for water, ballast and fuels. Both of these materials are not only water-based, but water- thinned, producing not only ex- tremely low VOC, but also, no flash point.

Devoe is also recognized for its leadership in antifouling coatings. A full range of antifouling materials with release rate guidelines to De- voe's ABC #3 Tin-Free Ablative.

DREW AMEROID MARINE

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Drew Ameroid® Marine now of- fers a specially designed air-pow- ered spray system to apply Magna- kote® rust preventive coating. The equipment operates with ship's ser- vice air, at a pressure of 20-100 psi, and enables the user to get a uni- form, adherent coating, quickly and easily.

The complete system consists of a filter/regulator, pump, hose, suction tube and a unique spray gun with turret nozzle. The multijet nozzle has four, easy-to-set detented spray settings allowing optimum Magna- kote coating coverage over a range of spraying distances, minimizing the need for staging, and reducing overall labor costs. One customer reports an 80 percent reduction in staging when using the equipment for spraying Magnakote coating.

The spray gun assembly is designed to provide reliability and safety without placing physical strain on the operator. The system may also be used for a variety of other ship- board chemical applications and to facilitate cleaning and maintenance jobs.

Magnakote rust preventive coat- ing is a patented compound of or- ganic and inorganic chemicals in a matrix of gelling and drying oils. It is an inexpensive and durable alter- native to traditional ballast tank coatings, sacrificial anode systems and older technology, non-drying, float coatings. Magnakote coating requires minimal surface prepara- tion and can be applied in port, in a shipyard, or in transit by the ship's own personnel. Magnakote dries in 48 hours and can be applied to a damp or dry surface. Because of its unique properties, it can also be applied over rusted or new steel.

As part of Drew's Magnakote "Life Preserver Program," (service available at selected ports) ships' ballast tanks are inspected by quali- fied Drew representatives, who eval- uate and advise on preventive main- tenance and recoating require- ments. After application, the ship- ping company is periodically re- minded of the recoating needs of the tank, thereby assuring maximum corrosion protection. (continued) 16 Maritime Reporter/Engineering News