Coatings World - May 2011

gram delivers competitive advantages to its participants by aligning the technology, training, and customer support of

PPG with the entrepreneurship, customer awareness, local market knowledge, and service capability of the independent distributor.

Great Wall Motor recommends
BASF Coatings’ automotive
refinish products
Great Wall Motor Company Limited
and BASF Coatings have signed a new
cooperation agreement. BASF Coatings
has been tested and approved as an au-
thorized supplier for refinishing prod-
ucts in the foreign markets of Great Wall
Motor. In addition to the delivery of au-
tomotive refinish products, a far-reach-
ing partnership is strengthened. In the
future, many dealers of Great Wall
Motor Company Limited will use BASF
Coatings’ services, such as computer-
based color management. Furthermore,
BASF Coatings will support the car-
maker and its dealers in technical issues.
Great Wall Motor Company Limited has
more than 30 different sites and 30,000
employees worldwide. The company has
the capacity to produce more than
500,000 vehicles per year.

PPG and NATM present first Green Manufacturing Award PPG Commercial Coatings and the National Association of Trailer Manufacturers (NATM) honored Engelbrecht Grills & Cookers, Paxton, Illinois, with the first annual Green Manufacturing Award at the NATM 23rd Annual Convention and Trade Show held February

(Continued from page 14)

XIM UMA Bonding Primer with enhanced
adhesion technology

XIM UMA Bonding Primer is a high performance interior and exterior bonder designed for bonding to tough-to-paint substrates and developing a surface to which topcoat paint can adhere.

UMA (urethane modified acrylic) was introduced more than 15 years ago, and has a proven track record as a quality primer for adhesion to low surface energy surfaces like porcelain, ceramic tile, glass, silicone polyester and Kynar, as well as glossy, higher surface energy materials like Formica, glossy alkyds and vinyl siding.

Understanding the way UMA is formulated and tested versus regular interior and exterior primers helps explain why it delivers good adhesion. First and foremost, it is important to understand that UMA was developed for adhesion, not for hiding, sanding or sealing like ordinary interior primers.

UMA is formulated using a proprietary acrylic/urethane polymer
that has outstanding dry and wet adhesion. It is blended with specific
adhesive resins. So, it is not just a vinyl acrylic, vinyl acetate-ethylene,
or acrylic polymer. Furthermore, after 10 years of research, exterior ap-
plication and durability testing, XIM introduced Flashbond technology
that is used in XIM 400W White, alkyd bonder. This technology is not
an emulsified alkyd. The Flashbond technology is a blend of four dif-
ferent and unique chemistries that have only one purpose, to signifi-
cantly enhance adhesion properties. These four chemistries are:
• Adhesive polymers, which impart mechanical and chemical ad-
hesion;

In addition to the Flashbond technology XIM also adds adhesion promoters to boost adhesion by chemically bonding to the surface even under harsh wet, exterior environments once the bonder/top-coat system is fully cured.

To demonstrate these enhanced performance properties, XIM has used test methods that simulate real life conditions, not just tests within a perfectly controlled laboratory environment. We use ASTM test methods that stress adhesion under tough environments, such as ASTM D2246 Test Method for Finishes on Primed Metallic Substrates for Humidity - Thermal Cycle Cracking. This test has been modified to use different substrates like tile and glass at different temperatures. This test method is used widely in the industrial market and some automotive applications to determine the durability of the coatings under severe stress. XIM also performs exterior exposure tests in Florida, Ohio and Arizona.

Conclusion

XIM’s conclusion regarding Zinsser’s claim is that having eight times more scrubs for an interior flat primer may be important for interior wall primers, and certainly for interior wall paints, but not necessarily for primers designed and promoted for adhesion to a wide range of surfaces in exterior, wet environments.I recommend very strongly to all readers, especially those who formulate paints to read Adhesion Aspects of Polymeric Coatings published by the Federation Series on Coatings Technology, Section V-Adhesion Promoting Primers and Coupling Agents. Another good book to read is Adhesion of Coatings Theory and Practice by Paint Research, Chapter 1, The Basics of Adhesion. Further, I would encourage all coatings sales personnel to attend basic paint formulation skills classes so they can understand the terms and become better salespeople.