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US5296273A Expired / Lapsed US ⏱️ 0.0 years remaining

Coating method for polypropylene resin moldings

Assignee: Sumitomo Chemical Co Ltd
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Filing: 1991-11-20
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Granted: 1994-03-22
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Expires: 2011-11-20
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Abstract

Abstract A method for coating a polypropylene resin molding is disclosed, comprising irradiating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, coating the irradiated surface with a primer, and further coating the coated surface with a coating material. A method for coating a polypropylene resin molding is also disclosed, comprising coating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with a primer, irradiating the coated surface with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, and further coating the irradiated surface with a coating material.

Inventors

  • 👤 Hiroomi Abe
  • 👤 Hideo Shinonaga
  • 👤 Kyoji Suzuki
  • 👤 Satoru Sogabe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 14:16
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D3/00; B05D3/06; B05D3/061; B05D3/062; B05D3/063; B05D3/065; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 78 words
A method for coating a polypropylene resin molding, which comprises irradiating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, coating the irradiated surface with a primer, and further coating the coated surface with a coating material, wherein said primer contains chlorinated polypropylene, and wherein said coating material is a urethane coating material.
Claim 2
Independent Claim 78 words
A method for coating a polypropylene resin molding, which comprises irradiating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, coating the irradiated surface with a primer, and further coating the coated surface with a coating material, wherein said primer contains chlorinated polypropylene, and wherein said coating material is a urethane coating material.

References Cited (Backward Citations)

GB1136199A Cited
US3600289A Cited
GB2050200A Cited
EP0103993A2 Cited
US4751103A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-03-21 1997-09-20 1998-03-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-03-21 2001-09-20 2002-03-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-03-21 2005-09-20 2006-03-22 $7700.00 Window Closed / Lapsed

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