US5437894A — Method of manufacturing a water- and oil-repellin…

Claim 1

Independent Claim 58 words

A method of manufacturing a water- and oil-repelling adsorbed film comprising: making a substrate surface irregular wherein the irregularities have a diameter of 0.01-50 μm; and contacting said irregular surface with a non-aqueous solution containing an active surface material comprising molecules having a fluorocarbon group and a chlorosilane group or having a fluorocarbon group and an alkoxysilane group.

Claim 2

Independent Claim 58 words

A method of manufacturing a water- and oil-repelling adsorbed film comprising: making a substrate surface irregular wherein the irregularities have a diameter of 0.01-50 μm; and contacting said irregular surface with a non-aqueous solution containing an active surface material comprising molecules having a fluorocarbon group and a chlorosilane group or having a fluorocarbon group and an alkoxysilane group.

Claim 3

Dependent Claim 134 words

The method of forming a water- and oil-repelling adsorbed film according to claim 1, further comprising providing the substrate surface with surface active hydrogen groups before or after the step of making the substrate surface irregular; wherein the contact step is carried out by contacting the substrate surface with a silane-based surface active material with the molecules thereof containing a chlorosilane or alkoxysilane group at one end and a fluorocarbon group at the other end to adsorb said surface active material to the substrate surface by a dehydrochlorination reaction or a dealcoholation reaction; forming thereon an outer layer more remote from the substrate by reacting the adsorbed surface active material with water with or without previous removal of non-reacted surface active material by washing using a non-aqueous organic solution; and drying the substrate surface.

Claim 4

Dependent Claim 191 words

The method of forming a water- and oil-repelling adsorbed film according to claim 1, further comprising; providing the substrate surface with active hydrogen groups before or after the step of making the surface irregular; wherein the contacting step is carried out by contacting the substrate surface with a non-aqueous solution containing a surface active material with the molecules thereof having a plurality of chlorosilyl groups to adsorb said surface active material by a dehydrochlorination reaction; reacting the adsorbed surface active material with water with or without previous removal of non-reacted surface active material by washing with a non-aqueous organic solution to form an inner layer; contacting the surface of said inner layer with a silane-based surface active material with the molecule thereof containing a silyl group at one end and a fluorocarbon group at the other end to adsorb said surface active material to the substrate surface by a dehydrochlorination reaction or a dealcoholation reaction; forming thereon an outer layer more remote from the substrate by reacting with water with or without previous removal of non-reacted surface active material by washing with a non-aqueous organic solution; and drying the substrate surface.

Claim 5

Dependent Claim 72 words

The method of manufacturing a water- and oil-repelling adsorbed film according to claim 1, wherein said step of making the substrate surface irregular is carried out by: mixing fine particles and silicate glass on the substrate surface to form a coating and then thermally baking said coating together with the substrate and then performing a procedure selecting from the group consisting of electrolytic etching, chemical etching, sand blasting, spattering, depositing, and rubbing.

Claim 6

Independent Claim 72 words

The method of manufacturing a water- and oil-repelling adsorbed film according to one of claims 2 and 3, wherein said surface active material is one with the molecules thereof having at one end a chlorosilane group represented by a formula; --SiCl.sub.n X.sub.3-n where n represents an integer from 1 to 3, and X represents at least one functional group selected from the group consisting of a lower-alkyl group and a lower-alkoxyl group.

Claim 7

Independent Claim 206 words

The method of manufacturing a water- and oil-repelling adsorbed film according to one of claims 2 and 3, wherein said surface active material is a compound selected from a group consisting of CF 3 --(CF 2 ) n --T--SiY p Cl 3-p where n represents an integer from 1 to 25, T represents a member of the group consisting of an alkylene group, an ethylene group, an acetylene group and a substituted group containing a silicon atom and a hydrogen atom, Y represents a substituted group selected from the group consisting of an alkyl group, a cycloalkyl group, an aryl group and derivatives of these groups, and p represents a number selected from the group consisting of 0, 1 and 2, and CF 3 --(CF 2 ) n --T'--SiZ q (OA) 3-q where n represents either O or an integer, T' represents a member of the group consisting of an alkylene group, an alkyne group, and a substituted group containing a silicon atom and a hydrogen atom, Z represents a substituted group selected from a group consisting of an alkyl group, a cycloalkyl group, an aryl group and derivatives thereof, A represents a hydrogen atom or an alkyl group, and q represents 0, 1 or 2.

Claim 8

Dependent Claim 66 words

The method of manufacturing a water- and oil-repelling adsorbing film according to claim 3, wherein said surface active material with the molecules thereof containing a plurality of chlorosilyl groups is a compound selected from the group consisting of SiCl 4 , SiHCl 3 , SiH 2 Cl 2 , and Cl--(SiCl 2 O) n --SiCl 3 , where n is an integer from 1 to 10.

Claim 9

Dependent Claim 39 words

The method of manufacturing a water- and oil- repelling adsorbed film according to claim 1, wherein said substrate is a plastic substrate and the method further comprises contacting the surface thereof with an oxygen-containing plasma atmosphere to be hydrophilic.

Claim 10

Independent Claim 45 words

The method of manufacturing a water- and oil-repelling adsorbed film according to one of claims 2 and 3, wherein said active hydrogen group on the substrate surface is a member of the group consisting of a hydroxyl group, an amino group and an imino group.

Claim 11

Dependent Claim 97 words

The method of manufacturing a water- and oil-repelling adsorbed film according to claim 3, wherein said non-aqueous solution containing a surface active material contains a crosslinking agent selected from the group consisting of SiP s Cl 4-s where P represents H, a lower-alkyl group and a lower-alkoxyl group, and s represents of 0, 1 and 2, and SiQ t (OA) 4-t where Q is at least one substituted group selected from the group consisting of a lower-alkyl group and a lower-alkoxyl group, A represents hydrogen atom or a lower-alkyl group, and t represents 0, 1 or 2.

Claim 12

Dependent Claim 23 words

The method of manufacturing a water- and oil-repelling adsorbed film according to claim 1, wherein the irregularities have a diameter of 0.5-50 μm.

Claim 13

Dependent Claim 23 words

The method of manufacturing a water- and oil-repelling adsorbed film according to claim 11, wherein the irregularities have a diameter of 1-10 μm.

Claim 14

Independent Claim 146 words

A method of manufacturing a water- and oil-repelling adsorbed film comprising: preparing a substrate having active hydrogen groups at the surface and contacting said substrate with a non-aqueous solution containing a material with the molecules thereof having a plurality of chlorosilyl groups to coat said material onto the surface of said substrate through a reaction between active hydrogen groups at said substrate surface and the chlorosilyl groups of said material with the molecules thereof having a plurality of chlorosilyl groups; coating with a non-aqueous solution containing a mixture of a surface active material with the molecules thereof containing a fluorocarbon group and a chlorosilane group and fine particles having a hydrophilic surface; contacting with a mixture of a material with the molecules thereof containing a fluorocarbon group and an alkoxysilane group and fine particles having hydrophilic surface; and thermally baking said coating together with the substrate.

Claim 15

Independent Claim 146 words

A method of manufacturing a water- and oil-repelling adsorbed film comprising: preparing a substrate having active hydrogen groups at the surface and contacting said substrate with a non-aqueous solution containing a material with the molecules thereof having a plurality of chlorosilyl groups to coat said material onto the surface of said substrate through a reaction between active hydrogen groups at said substrate surface and the chlorosilyl groups of said material with the molecules thereof having a plurality of chlorosilyl groups; coating with a non-aqueous solution containing a mixture of a surface active material with the molecules thereof containing a fluorocarbon group and a chlorosilane group and fine particles having a hydrophilic surface; contacting with a mixture of a material with the molecules thereof containing a fluorocarbon group and an alkoxysilane group and fine particles having hydrophilic surface; and thermally baking said coating together with the substrate.

Claim 16

Independent Claim 170 words

A method of manufacturing a water- and oil-repelling adsorbing film comprising: a step of preparing a substrate having active hydrogen groups at the surface and contacting the surface of said substrate with a non-aqueous solution containing a material with the molecules thereof containing a plurality of chlorosilyl groups to adsorb said material to the substrate surface through a reaction between active hydrogen groups on the substrate surface and chlorosilyl groups of said material with the molecules thereof having a plurality of chlorosilyl groups; forming a thin film or a chemically adsorbed monomolecular film of said material with the molecules thereof containing a plurality of chlorosilyl groups on said substrate with or without removal of non-reacted material remaining on the substrate by washing with a non-aqueous organic solution; adsorbing on to the film a non-aqueous solution containing a mixture of a surface active material with the molecules thereof having a fluorocarbon group and a silyl group and fine particles having hydrophilic surface; and thermally baking said coating together with the substrate.

Claim 17

Independent Claim 170 words

A method of manufacturing a water- and oil-repelling adsorbing film comprising: a step of preparing a substrate having active hydrogen groups at the surface and contacting the surface of said substrate with a non-aqueous solution containing a material with the molecules thereof containing a plurality of chlorosilyl groups to adsorb said material to the substrate surface through a reaction between active hydrogen groups on the substrate surface and chlorosilyl groups of said material with the molecules thereof having a plurality of chlorosilyl groups; forming a thin film or a chemically adsorbed monomolecular film of said material with the molecules thereof containing a plurality of chlorosilyl groups on said substrate with or without removal of non-reacted material remaining on the substrate by washing with a non-aqueous organic solution; adsorbing on to the film a non-aqueous solution containing a mixture of a surface active material with the molecules thereof having a fluorocarbon group and a silyl group and fine particles having hydrophilic surface; and thermally baking said coating together with the substrate.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1998-07-31	1999-01-30	1999-08-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2002-07-31	2003-01-30	2003-08-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2006-07-31	2007-01-30	2007-08-01	$7700.00	Window Closed / Lapsed

Method of manufacturing a water- and oil-repelling film having surface irregularities

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