Steve

Adding anything to the coating after approvals testing will negate its
qualification / approval status.

Why does the customer want a color? Does he want it to be opaque?

We have experimented with pigments and some of them work - what color would
you like? However, they do cause a major problem for the manufacturer,
because that color does not go easily away for subsequent batches.

More particularly, adding pigments can disturb the dielectrical and other
protective characteristics that might be desirable. Check this before you
jump.

If we are talking opaque - then we have to add fillers. These greatly
influence the moisture protection that you DO want from the coating because
they cause an easier path for moist air / water to move through the film.
This is not good and is why the US military called for the use of UV
tracers.

If the customer is trying to hide something - forget it! We can remove any
coating with enough time, patience and enthusiasm!

Hope this helps.

Regards, Graham Naisbitt

[log in to unmask]
www.concoat.co.uk <http://www.concoat.co.uk>

For instant access to Product Data Sheets register on the Tech-Shot area of
http:// www.concoat.co.uk <http://www.concoat.co.uk>

Concoat Limited
Alasan House, Albany Park
CAMBERLEY GU16 7PH UK
Phone: +44 (0)1276 691100
Fax: +44 (0)1276 691227
Mobile: +44 (0)79 6858 2121





-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Stephen S. Schiera
Sent: Thursday, November 29, 2001 03:29
To: [log in to unmask]
Subject: [TN] Color additives for conformal coat


I have a current request from a customer for a conformal coat that has a
visible coloring agent such as "red or blue".  We currently use an acrylic
coating with a UV trace and UL approval.  Does anyone use or know of visible
color traces for coatings?

Thanks in advance

Steve

----------------------------------------------------------------------------
-----
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET
Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases >
E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
----------------------------------------------------------------------------
-----

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------