PARTS WITH OIL-REPELLENT LAYERS AND PROCESS FOR PRODUCTION THEREOF

Title:

PARTS WITH OIL-REPELLENT LAYERS AND PROCESS FOR PRODUCTION THEREOF

Document Type and Number:

WIPO Patent Application WO/2006/123840

Kind Code:

A1

Abstract:

A part having an oil-repellent layer which exhibits such high oil repellency as to make droplets of fuel or lubricating oil slip speedily down the surface around a fuel injector nozzle; and a process for the production thereof, more specifically, a part (10) having an oil-repellent layer (14) which comprises a metal substrate (12) and an oil-repellent layer (14) formed on the surface of the substrate (12), characterized in that the oil-repellent layer (14) is constituted of an underlayer (16) of poly(ether sulfone) (PES) adhering tightly to the surface of the substrate (12) and a top layer (18) comprising a continuous PES phase (20) uniting with the PES of the underlayer (16) and a dispersed phase (22) of a tetrafluoroethylene/hexafluoro- propylene copolymer (FEP) and that the top layer (18) is exposed as the surface of the oil-repellent layer (14). It is preferable that the oil-repellent layer (14) have a PES/FEP weight ratio of 40 : 60 to 80 : 20, still preferably 60 : 40 to 75 : 25. Further, it is preferable in order to enhance the tight adhesion of the substrate (12) to the PES underlayer (16) that the substrate (12) have a roughened surface.

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Inventors:

SHIRATANI KAZUHIKO (JP)
MIYAZAKI SYOJI (JP)
SAKAMOTO KATSUMI (JP)
KOBAYASHI AKIHITO (JP)

Application Number:

PCT/JP2006/310511

Publication Date:

November 23, 2006

Filing Date:

May 19, 2006

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
TOYO DRILUBE CO LTD (JP)
SHIRATANI KAZUHIKO (JP)
MIYAZAKI SYOJI (JP)
SAKAMOTO KATSUMI (JP)
KOBAYASHI AKIHITO (JP)

International Classes:

B32B15/082; B32B15/08; B32B27/00; C09D5/00; C09D7/65; C09D7/80; C09D127/18; C09D127/20; C09D181/06; C23C26/00; C23C28/00; F02M61/18

Foreign References:

JPH10193514A	1998-07-28
JPH07308988A	1995-11-28
JPH0531029A	1993-02-09

Other References: