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Method for improving surface properties of a shaped article of a synthetic resin

Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1985-01-10
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Granted: 1985-12-24
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Expires: 2005-01-10
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Abstract

Abstract Surface properties or, in particular, antistatic performance of a shaped article of a synthetic resin can be remarkably and lastingly improved by the exposure of the surface to low temperature plasma in two steps, in one of which the plasma is generated in an atmosphere containing a nitrogen-containing organic compound, e.g. amine, amide and the like compounds, and in the other of which the plasma is generated in an atmosphere containing a fluorine-containing organic compound, e.g. fluorinated hydrocarbon compounds. Alternatively, the plasma treatment is undertaken in one step with low temperature plasma generated in an atmosphere containing both of the nitrogen- and fluorine-containing organic compounds.

Inventors

  • 👤 Susumu Ueno
  • 👤 Hirokazu Nomura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 17:34
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B29; B29C; B29C59/00; B29C59/14

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 68 words
A method for improving the surface properties of a shaped article of a synthetic resin comprising the sequential steps of: (a) exposing the surface of the shaped article to low temperature plasma generated in an atmosphere containing a nitrogen-containing organic compound; and then (b) exposing the surface of the shaped article treated in step (a) to low temperature plasma generated in an atmosphere containing a fluorine-containing organic compound.
Claim 2
Independent Claim 68 words
A method for improving the surface properties of a shaped article of a synthetic resin comprising the sequential steps of: (a) exposing the surface of the shaped article to low temperature plasma generated in an atmosphere containing a nitrogen-containing organic compound; and then (b) exposing the surface of the shaped article treated in step (a) to low temperature plasma generated in an atmosphere containing a fluorine-containing organic compound.

References Cited (Backward Citations)

US4276138A Cited
US4396641A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-23 1989-06-24 1989-12-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-23 1993-06-24 1993-12-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-23 1997-06-24 1997-12-24 $7700.00 Window Closed / Lapsed

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