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Method for modifying surfaces with ultra thin films

Patent 5766698 Issued on June 16, 1998. Estimated Expiration Date: Icon_subject November 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventor: Sagiv

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Method of applying thin films of amphiphilic molecules to substrates
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Patent #: 5173365
Issued on: 12/22/1992
Inventor: Singh, et al.

Mold surfaces with ultra thin release films
Patent #: 5204126
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Film forming composition and method for modifying surfaces with ultra thin films
Patent #: 5219654
Issued on: 06/15/1993
Inventor: Singh, et al.

Solution containing amphiphilic molecules
Patent #: 5300561
Issued on: 04/05/1994
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Finishing agents and method of manufacturing the same
Patent #: 5435839
Issued on: 07/25/1995
Inventor: Ogawa

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Inventors

Assignee

Application

No. 755964 filed on 11/25/1996

US Classes:

427/601, Immersion bath utilized427/353, With water427/387, Silicon compound containing coating427/388.1, Metal base427/393.5, Resin, rubber, or elastomer base428/447As siloxane, silicone or silane

Examiners

Primary: Cameron, Erma

Attorney, Agent or Firm

International Classes

B05D 007/02
B05D 007/14

Abstract

A faster and more efficient method for applying ultra thin films to substrate surfaces is disclosed. The method comprises heating a film forming composition comprising amphiphilic molecules to a liquid state, immersing the substrate surface in the heated liquid composition to heat the surface, and washing away the excess composition. For surfaces that ordinarily have insufficient or no chemical moieties reactive with the amphiphilic molecules, the immersion in the heated composition causes the substrate to become porous and expose previously unavailable chemically reactive moieties in the surface matrix. The amphiphilic molecules then self-assemble, chemically bond to the surface matrix and self-polymerize with each other and with other surface matrix-bound and/or surface-bound molecules to form the ultra thin surface film. The method is also faster and more efficient for coating non porous and metal surfaces.

Other References

  • Hawley's Condensed Chemical Dictionary, Twelfth Edition, 1993, Defn. of "Ultrasonics"
  • Bigelow, W.C. et al., Oleophobic Monolayers. I. Films adsorbed from solution in non-polar liquids. J. Colloid Science 1: 513-538 (1946), No Month Given
  • Lieng-Huang Lee. Wettability and Conformation of Reactive Polysiloxanes. J. Colloid and Interface Science 27(4): 751-760 (Aug. 1968)
  • Polymeropoulos, E.E. and Sagiv, J., Electrical Conduction Through Adsorbed Monolayers. J. Chem. Phys. 69(5): 1836-1847 (Sep. 1978
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