These are 2 basic categories of LPI materials in use now - Acrylated and
Epoxy based.  The Epoxy based systems require a solvent development and
the Acrylic materials are aqueous.

 

Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED 
           76 Technology Drive - POB 1890 
              Brattleboro, Vermont 05302
                Voice - 802.257.4571 ext 37 
                    Fax - 802.257.0011
                       <http://www.vtcircuits.com/> 
                           
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Crepeau, Phil (Space
Technology)
Sent: Monday, January 30, 2006 7:33 PM
To: [log in to unmask]
Subject: [TN] lpi soldermask

hi,

i'd like to know the class(es) of organic compounds that lpi soldermasks
fall into.  would/could they classified as urethane, acrylic, epoxy, or
other?  we need to identify the class(es) to our customer and i haven't
had much luck.  i'm sure it depends on the vendor, so if i get reponses
that indicate they could fall into several classes, i'd like to know
what they all are.

thanks,

phil

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