Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1996-09-06
1999-06-22
Le, H. Thi
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428353, 428355R, 428356, 428407, 428506, 428520, B32B 516
Patent
active
059141867
ABSTRACT:
A heat-resistant anti-static pressure-sensitive adhesive tape comprising a substrate having coated thereon an acrylic microparticulate adhesive having an average diameter of at least about 1 micrometer, wherein the microparticles have a surface bearing thereon a conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, and at least one thermal stabilizer selected from the group consisting of hindered amines, salts of substituted toluimidazoles, and mixtures thereof, said substituted toluimidazoles having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, a methyl group, an ethyl group and a propyl group, R.sub.2 is selected from the group consisting of hydrogen, a methyl group and an ethyl group, M is a metal, and x is an integer selected from 1 or 2 with positive or negative identity being dependent on the valence of the metal, said adhesive being adhered to said substrate by means of a primer, said primer comprising at least one phenolic resin, at least one rubbery compound, and at least one of said thermal stabilizers, said adhesive tape being capable of surviving immersion in molten solder at 260.degree. C. for at least about 5 seconds.
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Gutman Gustav
Yau Steven D.
Fonseca Darla P.
Le H. Thi
Minnesota Mining and Manufacturing Company
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