E-Newsletter:   March 2002


Welcome to the March edition of the IPC e-newsletter.

This edition of the newsletter contains:
1. News features compiled from various resources.
2. The Powder Coating Manual (Part 1)
3. Exhibitions and Conferences in January 2002
Site Activity
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    News Features  
PPG Launches Line of `Premium' Zero-VOC Interior Architectural Paints

(Insider News February 25, 2002)
PPG Industries Inc.'s Pittsburgh Paints brand, a part of the company's Architectural Finishes unit, announced the launch of a new
line of zero-VOC premium interior paints, named Pure Performance paint. The products are designed to target the commercial,
institutional and residential markets and boast high levels of durability, hiding and touch-up properties, minimal odor during application and drying, and mildew resistance on the paint film, the company said.

Dick Beuke, vice president, Architectural Coatings, said the new line of paints was formulated to cross market segments in a single brand that offers an environmentally friendly product combined with the strength and durability of traditional premium paint. He said the product is the first paint to receive Green Seal's Class A certification for meeting strict environmental standards. The company said the product's low odor and absence of VOC emissions make it ideally suited for "occupied space" applications such as hospitals, health-care facilities, retirement homes, schools, restaurants, and other buildings and public spaces.

"Our research and development team has worked hard to formulate a paint that can deliver outstanding performance without the solvents and conventional latex resins found in traditional premium paints,"Beuke said. "Pure Performance paint represents a breakthrough in resins technology because it utilizes unique polymer emulsions. This enhances water resistance, improves durability and allows the paint to self-coalesce when drying, eliminating the need for VOC-laden solvents in the paint."

The paint is offered in primer/sealer, flat, eggshell, and semigloss versions and can be tinted to all 1,890 colors in the Pittsburgh
Paints Design Collection, the company said.

PPG to appeal verdict
(European Coatings Flash - February 25, 2002)
Officials with PPG Industries said they would appeal a federal jury's decision to award Marvin Windows and Doors $136 million in a breach-of-warranty suit against the coatings manufacturer. Marvin, of Warroad, Minn., alleged PILT wood preservative from PPG failed to prevent rot in its wood windows manufactured during the late 1980s. The company, which said the verdict was unexpected, continues to maintain that PILT preservative is not defective, citing the fact that the product has been in use 20 years.

DuPont Co. says its new "tricoat" white-pearl automotive coating system allows the finish to be applied in three layers without an intermediate bake step. The company says the process represents a "very important step" in application of such coatings.

Coating designed to mimic whale' skin antifouling properties
(February 2002 issue of PRA's News of the Month)
Scientists from the Hanover School of Veterinary Medicine say they plan to develop an antifouling paint that mimics the nanostructure of a whale's skin. The researchers report in Marine Biology that whale skin is made up of tiny pores surrounded by 'nanoridges' that contain an enzymatic gel that repels organisms. A commercial version is being developed using a polymer matrix with silica crystals which could be a substitute for tin-based paints. (Chem Week, 2 Jan 2002, 164 (1), 48)

Paints imports in China must pass inspection
(February 2002 issue of PRA's News of the Month)
Legal scrutiny of imported paints and varnishes by the State Administration for Entry-Exit Inspection and Quarantine of the People's Republic of China (CIQSA) commenced from 1 January 2002. Chinese customs will release imported goods only with a clearance notice from CIQSA. Imported paints and varnishes must conform with two Chinese standards: : - The Civil Building Indoor Pollution Control Regulations; - The Harmful Substance Limit in Indoor Construction Decoration Materials. Products not meeting these standards cannot be sold in China. (Asia Pacific Coat J, Oct 2001, 14 (15), 6)

(February 2002 issue of PRA's News of the Month)
The 'Powder Coated Tough' mark, developed by the US Powder Coatings Institute, is now gaining international popularity; the British Coatings Federation and the Japan Powder Coating Association have agreed to promote it among their members. Altogether 281 powder coating businesses have signed up to the programme, incorporating the logo in their
promotional materials. Participants are drawn from a range of industrial equipment producers, as well as material suppliers and 140 custom coaters. Contact: Tel: +1 703 684 1770. (Finishing, Dec 2001, 25 (12), 3-4)

(February 2002 issue of PRA's News of the Month)
The following developments have taken place recently:

ASTM, one of the largest voluntary standards development organisations in the world, has announced a change in its name to "ASTM International". This change reinforces the openness of the ASTM standards development process to worldwide input as well as reflecting the global application and use of ASTM standards.

BS EN ISO 11890-1: 2001; BS 3900-A23; 2000, 2001: Paints and varnishes - determination of volatile organic compound (VOC) content - Part 1. Difference method

BS 7079-B8: 2001; ISO 8502-8: 2001: Preparation of steel substrates before application of paints and related products. Group B. Methods for the assessment of surface cleanliness. Part B8. Field method for the refractometric determination of moisture

BS 7079-A3: 2002; ISO 8501-3:2001: Preparation of steel substrates before application of paints and related products - Group A. Visual assessment of surface cleanliness. Part A3. Preparation grades of welds, cut edges and other areas with surface imperfections.

(Insider News February 4, 2002)
Walter Kissling;
Retired CEO of H.B. Fuller Co.

Walter Kissling, retired CEO of coatings and adhesives manufacturer H.B. Fuller Co., died Jan. 28, 2002, following a battle with cancer. He was 70.

Born in San Jose, Costa Rica, Mr. Kissling joined H.B. Fuller when the company acquired Kativo Chemical Industries in 1967. He held several key executive positions with H.B. Fuller, including vice president of Latin American operations, senior vice president of International Operations, and executive vice president and chief operating officer. He was named CEO in1995 and held the position until his retirement in 1998. He was a member of the company's board
of directors for 34 years.

"Walter positioned H.B. Fuller for the 21st century," said current company CEO and Chairman Al Stroucken. "During his tenure, he led our international expansion, broadening the company's borders and our opportunities. He strengthened our bottom line, and he championed development of an information-technology platform essential to doing business in a global economy. His contributions are many and his imprint is lasting. We will miss him greatly, and extend our heartfelt sympathy to his family."

Mr. Kissling served on several corporate boards of directors, and had been president of the board of the business-management school INCAE, the Central American Management Institute. He was involved in
activities designed to encourage Costa Rican businesses to be engaged in community development, H.B. Fuller said in announcing his passing.

Mr. Kissling is survived by his wife, Cecilia; five children; and nine grandchildren.


(4-5 March, 2002, Chicago, USA)
A technical seminar with expert speakers dedicated to educating attendees on the powder coating process. Covering everything from ideal raw materials to proper formulation procedures to the prevention of problems during application. For further information, please contact Doug Siwek. Tel: + 1 248 244-6456; E-mail: siwekd@bnp.com

(4-6 March 2002, Hilton Head Island, South Carolina, USA)
For further information, please contact: Institute of Materials Science, Division of Program Organisation, PO Box 369, New Paltz, New York, 12561 USA. Tel: + 1 914 255 0757; Fax: + 1 914 255 0978

Montréal Society for Coatings Technology annual symposium.
(March 6)
Paul Emile Seguin 450-263-1848)

(7-8 March 2002, Amsterdam, The Netherlands)
What's now and what's next in implementing e-business solutions for the chemicals industry. For further information, please contact: Alex Scott, Chemical Week Associates, 24-25 Scale Street, London, W1T 2HP, UK. Tel: + 44 20 7436 7676; E-mail: ascott@chemweek.com

(12-13 March 2002, Dubai, United Arab Emirates)
For further information, please contact: Marketing Department, dmg world media (uk) ltd, Queensway House, 2 Queensway, Redhill, Surrey. RH1 1QS. Tel: + 44 1737 855301; Fax: + 44 1737 855474; E-mail: tickets@uk.dmgworldmedia.com

Montréal branch of the American Electroplaters and Surface Finishers Society (AESF) meeting
(March 13 at CEPROCO Montréal.)
(Yves Michel Henuset 450-641-8537)

(12-14 March 2002, Dubai World Trade Center, United Arab Emirates)
This will be the 6th International Exhibition and Seminar on Chemicals, Petrochemicals and the Chemical Process Technology Industry in the Middle East incorporating every aspect of Corrosion Control & Management. For further information, please contact: International Expo Consults LLC, P.O.Box 50006, Dubai, United Arab Emirates. Tel: + 971 4 3435777; Fax: + 971 4 3436115; Email: iec@emirates.net.ae

Vancouver section of the Pacific Northwest Society for Coatings Technology
March 14: monthly meeting at Albercorn Inn in Richmond, BC. (John Berghuis 604-814-3393)


(14-15 March 2002, Berlin, Germany)

For further information, please contact Vincentz Verlag, PO Box 6247, 30062 Hanover, Germany. Tel: + 49 511 99 10 271; Fax: + 49 511 99 10 279; E-mail:
amanda.beyer@coatings.de or go to: http://www.coatings.de

Oil & Colour Chemists Organization of Ontario annual printing inks symposium
March 16: at Stage West in Mississauga),
ON. (Mike Miller 905-338-5020) E-mail:

Toronto branch of the American Electroplaters and Surface Finishers Society (AESF)
(March 21:meeting at the Linden Restaurant).
(Michael Payne 905-849-1200 ex. 3102)

(17-22 March 2002, New Orleans, USA)
Also known as the Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, this is a conference and exposition on laboratory science and instrumentation. For further information, please go to: http://www.pittcon.org or Tel: + 1 412 825 3220

18-20 March 2002, Mexico City, Mexico.
Exhibition and Conference. For further information, please contact: Dechema eV, Theodor-Heuss-Allee 25, 60486 Frankfurt a. M. Germany. Tel: + 49 69 75 64 0, Fax: + 49 69 75 61 201; E-mail: achema@dechema.de or go to: http://www.achema.de

(20-22 March 2002, Raleigh, North Carolina, USA)
Speaker recruitment is now underway. For more information and/or to request a conference brochure with complete information on speakers, sessions, hotel arrangements, etc., please contact Scott Stephenson at Intertech, 19 Northbrook Drive, Portland, Maine 04105 USA. Tel: + 1 207 781 9608; Fax: + 1 207 781 2150; E-mail: scotts@intertechusa.com

Toronto Society for Coatings Technology
(March 23:)
Spouses Night Dinner & Dance at The Old Mill in Toronto. (Jim Sally 905-458-6888) E-mail:

Transportation & Distribution Coatings Care workshop
(March 28):
At the Toronto Airport Hilton Hotel in Mississauga. (Karin David 514-745-2611) E-mail:



  Powder Coater’s Manual ------- (Part - 1)  
Powder coatings are finely ground plastic particles consisting of resin, crosslinker in thermoset powders, pigments & extenders, and various flow additives and fillers to achieve specific properties. When they are heated, these plastic particles melt to form a continuous film, typically a very durable and chemical resistant film.

Powder coatings are applied as a dry material and they contain very little, if any, Volatile Organic Compounds (VOC). The raw material is literally a powder, mixed dry, extruded, and ground into the final material. An environmentally safe coating that can provide a variety of high quality finishes makes powder a popular alternative in the ecologically sensitive climate that we live in today. Powder materials may be thermoplastic or thermoset.

Thermoplastic powders do not chemically react in a cure phase. They are typically used for functional applications and applied in thick films, typically 6-12 mils. They are used for a wide range of applications that requirea tough finish with impact resistance and/or chemical resistance. Thermoset powder coatings are applied and then cured in an oven at a certain temperature for a certain time. The cure process will cause a chemical crosslinking to take place, changing the powder into a continuous film that will not remelt. Thermoset powders are used for a variety of functional and decorative applications and usually applied in thinner films, typically in a film thickness of 1.5 to 4 mils.

Powders can be formulated to meet a variety of appearance or performance characteristics. This would include the film thickness, gloss, texture, color, and performance (hardness, chemical resistance, U.V. Resistance, high temperature resistance, etc.) of the coating. Powders are available with very smooth finishes, hammertones, wrinkles, and metallics.

A typical thermoset powder will have a resin as the primary film forming component, several pigments for color, flow aids, and a cure agent. The dry ingredients are blended at high speed to create a homogenous mixture and then fed into an extruder for melt mixing. The taffy like extrudate is cooled and chipped. The chips are ground to a very specific particle size distribution and packaged for shipment.

The particle size is important to the performance and appearance of the coating. Particle size can affect the application and appearance characteristics of the coating. This will be discussed later in this chapter.
Powder Coating Materials

1 Thermoplastic Powders
There are three primary resins used in thermoplastic powders, vinyls, nylons and polyesters. These materials are used for some food contact applications, playground equipment, shopping carts, hospital shelving and other applications. Few of the thermoplastics have the broad range of appearance properties, performance properties and stability that are required in applications that use thermoset powders. Some typical properties of the different resins are listed in the chart on page I/4.
Thermoplastic powders are typically high molecular weight materials that require high temperature to melt and flow. They are commonly applied by fluidized bed application and the parts are both pre-heated and post-heated.

Most of the thermoplastic powder coatings have marginal adhesion properties so that the substrate must be blasted and primed prior to application.
Property Vinyls Nylons Polyester
Primer Required Yes Yes No
Melting Point °F 266-302 367 320-338
Typical Pre/Post Heat °F 544/446 590/482 572/482
Specific Gravity, G/CM 3 1.20-1.35 1.01-1.15 1.30-1.40
Adhesion a G-E E E
Surface Appearance Smooth Smooth Slight Peel
Gloss, 60° 40-90 20-95 60-95
Pencil Hardness HB-2H B B-H
Flexibility b Pass Pass Pass
Impact Resistance E E E G - E
Salt Spray Resistance G E G
Weathering G G E
Humidity E E G
Acid c E F G
Alkali c E E G
Solvent c F E F F E F
E = Excellent G = Good F = Fair P = Poor
a With Primer Where Indicated
b No Cracking, 1/8 Inch Diameter Mandrel Bend
c Inorganic, Dilute
Polyvinyl Chloride (PVC)
Polyvinyl chloride powder coatings provide good durability, chemical and water resistance and they can be formulated for FDA approved applications such as frozen food shelving and dishwasher baskets. The finish is somewhat soft, glossy and flexible. It has good resistance to water and detergent at high temperatures for long periods of time.

Polyethylene produces soft and waxy films. Polypropylene powder has much in common with the plastic surface of solid polypropylene. Like most thermoplastic powders, they are durable and resistant to many chemicals and detergents. Some solvents and detergents can break them down quickly.

In addition to the toughness and chemical resistance common to other thermoplastics, polyethylene is an excellent electrical insulator. It also is used to coat laboratory equipment because the surface is very clean-able.

Nylon resins (polyamides) produce powders that are tough, smooth, chemical and solvent resistant, and very abrasion resistant. Most of the time a nylon powder will require a primer to achieve the adhesion level needed for higher performance applications. Nylons can be for-mulated for food contact applications, they make an excellent coating for shelving and they are also widely used on bearing surfaces to prevent breakdown from mechanical abrasion. Some nylons are also used for outdoor applications such as light fixtures or seating.

Polyester-based thermoplastic powder materials have better than average adhesion properties and good UV resistance characteristics. However, they are somewhat more difficult to apply than nylon materials and not as resistant to abrasion or solvent. Polyesters are used on some outdoor applications such as patio furniture due to good outdoor durability characteristics.

PVDF (Poly-Vinylidene Fluoride)
PVDF based coating materials have excellent weathering characteristics. They also have excellent resistance to chemicals with the exception of hydrocarbon solvents. They are used to coat piping and valves used in chemical process industries. Usually, a chromate primer is recommended.
  To be continued.......  



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