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| 1. |
What is the chemistry of
Chartwell products? |
| |
All products are proprietary metal organic solutions
supplied in water or various glycols. The metals used are not
any of the CONEG toxic or carcinogenic metals. |
| 2. |
Where are Chartwell products
commercially used? |
| · |
Industrial Coatings for improved corrosion
resistance (salt fog/prohesion) and improved impact (reverse/direct) |
| ·
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Powder Coatings for improved corrosion
resistance and reduced creep at the scribe. |
| · |
WB Flexographic inks for improved adhesion
to plastic (mylar, treated PP/PE) film. |
| · |
Rubber for improved adhesion of the formed
rubber article to metal, plastic, or other elastomers. |
| · |
Adhesives for improved to adhesion to metal,
plastic, rubber. |
| 3. |
What are the advantages/disadvantages
vs. silane adhesion promoters? |
| |
Chartwell Products are not moisture sensitive.
They are soluble and stable in all water-borne systems. This
is also important in SB systems where surface adsorbed moisture
on pigments and fillers will contribute to silane hydrolysis. |
| 4. |
How do I verify Chartwell's
water stability vs. silanes? |
| |
Prepare side by side samples: Control (no adhesion
promoter), sample with silane, and sample with Chartwell adhesion
promoter.
Measure adhesion (or related property, ie salt fog) at time
of end product preparation. Repeat property measurement 30-60
days later. You will see a substantial decrease in properties
in the silane containing sample and no decrease in the Chartwell
containing sample. |
| 5. |
How does the price of Chartwell
Adhesion promoters compare to silanes? |
| |
Chartwell products will always save you a minimum
of 50% of your silane cost. Use levels as
supplied are identical. |
| 6. |
What is the recommended
use level? |
| ·
|
Water-borne systems: 1-2 per cent (as supplied) based
upon polymer solids.
Note: 1% is often found to be best ( Do not assume more is
better!)
Post addition is no problem. Commercial used level: 3-8 lbs/100
gallons.
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| · |
Solvent-borne Systems: 1-2 per cent(as
supplied) based upon polymer solids.
High Shear mixing ( in grind if possible) is required. Commercial
used level: 3-8 lbs/100 gallons |
| · |
For "H","2H" and "HR"
products, 0.5-1.0 per cent as supplied based upon polymer solids |
| · |
Powder Coatings: 1.4 - 2.0 parts per hundred
resin (phr). For "H" products 1.0-1.4 phr. for 2H
products, 0.5 - 1.0 phr. |
| 7. |
Could I further improve
benefits by using an increased level? |
| |
NO. We caution you that use levels higher than
those recommended will actually result in a decline in property
benefits. |
| 8. |
How do I choose the proper
Chartwell Product for my application? |
| |
Selection is based upon the polymer in your system
rather than the substrate to which you wish to adhere. Product
selection is easy. Refer to the bulletin RECOMMENDATIONS BY
POLYMER, or the Product Selection page. |
| 9. |
What is the difference between
Chartwell and Chartsil products? |
| |
Chartsil products are prepared by absorbing selective
Chartwell Liquid Products on a microporous silica carrier (28%
silica, 72% Chartwell liquid)
Chartsil Products should be used
in POWDER COATINGS and RUBBER only. |
| 10. |
What potential problems
can occur in my evaluation? |
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Improper product selection in WB systems
may result in gel formation.
Improper mixing in SB systems may result in gloss loss
and poor performance. |
| 11. |
What type of mixing is required? |
| · |
SB Systems: High Shear mixing such as a
Cowles or similar high speed dissolver.
Note: Milling is not an acceptable alternative and
will result in poor performance |
| ·
|
Rubber: Internal Banbury Type Mixer. Two
and three roll mills are generally not effective. |
| · |
Powder Coating: Conventional single or
twin screw extruder. The clearance between the screw and cylinder
wall should be set as a low as practically possible to maximize
shear. |
| 12. |
How can I obtain a sample
or further technical assistance? |
| |
By contacting us or your local Chartwell
agent/ distributor.
You may contact us
at:
Tel: 508-695-1690
FAX: 508-699-6693
Email: info@chartwellintl.com
Please let us know
if you need contact information for your local Chartwell agent. |
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(Top of Page)
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Chartwell International,
Inc.
100 John Dietsch Blvd.
North
Attleboro, MA 02763
info@chartwellintl.com
Tel: (508)695-1690
Fax:
(508)699-6693 |
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