Static dissipative electronic packaging article
AssigneeMinnesota Mining and Manufacturing Company
InventorsWilliam J. Clatanoff, Eric D. Morrison, Nanayakkara L. D. Somasiri
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Abstract
The invention comprises a self supporting electronic packaging article comprising an insulative polymer overcoated with an antistatic/protective coating system comprising from about 8 mg/m.sup.2 to about 70 mg/m.sup.2 vanadium pentoxide, from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality, and from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a nonsulfonated protective topical binder, all of which may be contained in a single coating, or which may be contained in a two-layer coating system.
Claims21
An antistatic electronic packaging article comprising an insulative polymer overcoated with a single layer antistatic/protective coating comprising:
- a) from about 8 mg/m.sup.2 to about 70 mg/m.sup.2 vanadium pentoxide,
- b) from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality selected from the group consisting of sulfopolymers and addition polymers, and
- c) from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a nonsulfonated protective topical binder,
- wherein said antistatic coating has a ratio of sulfopolymer to vanadium pentoxide of from about 0.5 to about 5.
An antistatic electronic packaging article comprising an insulative polymer overcoated with a multiple layer antistatic/protective coating system comprising:
- a) an antistatic coating comprising from about 8% by weight to about 60% by weight vanadium pentoxide, and
- b) from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality, selected from the group consisting of sulfopolymers, and addition polymers,
- wherein said antistatic coating has a ratio of sulfopolymer to vanadium pentoxide of from about 0.5 to about 5, said antistatic coating being overcoated with a protective coating comprising from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a nonsulfonated protective topical binder.
A single self-supporting antistatic/protective film, said film being formed from
- a) from about 8 mg/m.sup.2 to about 70 mg/m.sup.2 vanadium pentoxide,
- b) from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality selected from the group consisting of sulfopolymers and addition polymers, and
- c) from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a protective comprising a nonsulfonated protective topical binder,
- wherein said antistatic coating has a ratio of sulfopolymer to vanadium pentoxide of from about 0.5 to about 5.
A multiple layer self-supporting antistatic/protective film comprising:
- a) an antistatic layer comprising from about 8% by weight to about 60% by weight vanadium pentoxide, and
- b) from about 36 mg/m.sup.2 to about 270 mg/m.sup.2 of a polymer latex having a hydrophilic functionality, selected from the group consisting of sulfopolymers, and addition polymers,
- wherein said antistatic layer has a ratio of sulfopolymer to vanadium pentoxide of from about 0.5 to about 5, said antistatic coating being overcoated with a protective layer comprising from about 210 mg/m.sup.2 to about 842 mg/m.sup.2 of a nonsulfonated protective topical binder.
Dependencies are inferred from the claim text.