Hydrophobic coating and method

• US 8,846,161 B2
• Filed: 07/16/2010
• Issued: 09/30/2014
• Est. Priority Date: 10/03/2006
• Status: Expired due to Fees

• Current Assignee: Brigham Young University (The Church of Jesus Christ of Latter-Day Saints)
• Original Assignee: Brigham Young University (The Church of Jesus Christ of Latter-Day Saints)
• Inventors: Linford, Matthew R., Saini, Gaurav
• Primary Examiner(s): Yuan, Dah-Wei D
• Assistant Examiner(s): Law, Vera V
• Application Number:
  US12/837,929
• Publication Number:
  US 20110159299A1
• Time in Patent Office: 1,537 Days
• Field of Search: 428/428, 428/429, 428/451, 427/536, 427/539, 427/535
• US Class Current: 427/536
• CPC Class Codes: B05D 1/36 Successively applying liquids or other fluent materials, e.g. without intermediate treatment
• CPC Class Codes: B05D 1/60 Deposition of organic layers from vapour phase vapour phase deposition in general C23C14/00, C23C16/00
• CPC Class Codes: B05D 3/062 Pretreatment
• CPC Class Codes: B05D 3/144 of polymeric substrates
• CPC Class Codes: B05D 5/08 to obtain an anti-friction or anti-adhesive surface rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C08K 5/5455 containing at least one group
• CPC Class Codes: C09D 183/06 containing silicon bound to oxygen-containing groups C09D183/12 takes precedence
• CPC Class Codes: C09D 5/002 Priming paints C09D5/08 takes precedence
• CPC Class Codes: D06M 10/025 Corona discharge or low temperature plasma
• CPC Class Codes: D06M 13/507 Organic silicon compounds without carbon-silicon bond
• CPC Class Codes: D06M 13/513 with at least one carbon-silicon bond
• CPC Class Codes: D06M 19/00 Treatment of feathers
• CPC Class Codes: D06M 2200/12 Hydrophobic properties
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

A hydrophobic coating and method of preparing a hydrophobic coating with an adhesion promoting layer formed from an adhesion promoting composition and a hydrophobic layer, is disclosed. The adhesion promoting composition may comprise an adhesion promoting compound having an amine group and at least one of a silane functional group and/or a germanium functional group. The hydrophobic layer forming composition may comprise a hydrophobic layer forming compound having a hydrophobic aliphatic group and at least one of a silane functional group and/or a germanium functional group.

Claims

1. A method comprising;

treating a polymeric surface with plasma;

exposing the treated surface in the vapor phase to an adhesion promoting compound, the adhesion promoting compound having at least one silane functional group and at least one amine group to form an amino silane coated surface;

attaching an alkoxy silane selected from one or more of methoxy and ethoxy silanes by reacting the alkoxy silane in the vapor phase with the amino silane coated surface to form a hydrophobic outer surface, the alkoxy silane having at least one terminal —

CF₃ group and at least 3 —

CF₂—

groups, and at least one —

CH₂—

CH₂—

group.