C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 4/06 (2006.01) B05D 3/06 (2006.01) B05D 7/24 (2006.01)
Patent
CA 2259290
An acrylate composition, especially useful for producing conformal coatings on circuit board assemblies, includes a photo-initiator and an air-curing system, the latter being comprised of a compound having multiple allyloxy groups in its molecule and a transition metal salt catalyst. The composition is highly stable against auto-induced reaction in the absence of oxygen and at room temperature; it contains no active oxygen catalyst and no nonreactive diluent, and is advantageously formulated as a one-part product.
Cette invention se rapporte à une composition acrylique, destinée particulièrement à la production de revêtements conformes sur des ensembles de circuits imprimés. Ladite composition comporte un photoamorceur et un système favorisant le séchage à l'air comprenant un composé contenant dans sa molécule de multiples groupes allyloxy et un catalyseur à base d'un sel de métal de transition. Ladite composition est très stable vis à vis d'une réaction auto-induite en l'absence d'oxygène et à température ambiante; elle ne contient ni catalyseur à l'oxygène actif ni diluant non réactif et elle peut avantageusement être préparée en tant que produit simple.
Cantor Stephen E.
Levine Leon
Dymax Corporation
Seaby & Associates
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