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June 2005

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Subject:
From:
Bev Christian <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bev Christian <[log in to unmask]>
Date:
Thu, 9 Jun 2005 09:06:10 -0400
Content-Type:
text/plain
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text/plain (58 lines)
Ken,
Difunctional epoxies begin with brominated bisphenol-A epoxy resin as
the basic building block of FR-4.  Most normal boards are NOT using any
PBDE's.  Tetrabromobisphenol-A (TBBPA, I may have one too many B's in
the abbreviation, I'm not a board chemist.) is not an additive, but
makes up a large part of the actual board chemistry. There is a report
out there that shows that this material is not in the same league as the
PBDE's for bioaccumulation and is NOT included in the ban.  How that
helps.
Regards,
Bev
RIM

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bloomquist, Ken
Sent: June 9, 2005 8:52 AM
To: [log in to unmask]
Subject: [TN] Fire Retardant

What is the PWB industry using for a fire retardant to replace PBDE's.

Thanks,

KennyB

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