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US4483898A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquids with reduced spreading tendency

Assignee: Nokia Bell Labs
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Filing: 1982-03-17
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Granted: 1984-11-20
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Expires: 2002-03-17
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Abstract

Abstract The spreading of liquids, e.g., an epoxy resin, on a surface can be prevented or reduced if an inhibitor is added to the liquid. Inhibitors according to the invention have the generic formula [CX 3 --(CY 2 ) n ] N --R, where X is H or F, Y is H, F, or Cl, n is a number from about 1 to about 12, R is a carboxylic acid, an amide, a substituted amide, an amine, an alcohol, or an ester functionality, and N is 1, 2, or 3 if R is an alcohol or amine functionality, and 1 otherwise. The inhibitor typically has substantial solubility in at least one of the constituents of the liquid, and the liquid typically contains between about 0.05% and about 5% by weight of the inhibitor. Preferred inhibitors are perfluorooctanoic acid and 1H, 1H-pentadecafluorooctyl amine.

Inventors

  • 👤 Harold Schonhorn
  • 👤 Louis H. Sharpe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 19:08
CPC Classifications
C; C09; C09J; C09J163/00; H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; C08; C08K; C08K5/00; C08K5/0008; C08K5/04; C08K5/09; C08K5/095; C08K5/16; C08K5/17; C09D; C09D7/00; C09D7/40; C09D7/60; C09D7/63; C09K; C09K3/00; C09K3/32; H10; H10W; H10W20/00; H10W20/40; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/287; Y10T428/2878; Y10T428/2887; Y10T428/31504; Y10T428/31511; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31855; Y10T428/31935

Claims Analysis

Total Claims: 25
Claim 1
Independent Claim 246 words
Method for producing an article, the method comprising producing, from a substance comprising a multi-constituent liquid, on an existing surface, a layer having a shape substantially conforming to a predetermined geometry, the liquid being an adhesive or a liquid comprising a component selected from the group consisting of epoxies, polyesters, acrylics, and silicons, the liquid also comprising an effective amount of a material herein designated inhibitor, the inhibitor being capable of forming a film on the surface, with the film-coated surface having a critical surface tension of wetting that is less than the surface tension of the inhibitor-containing liquid, characterized in that (a) the layer produced from the liquid is at room temperature an adherent, substantially solid layer, (b) the inhibitor is selected from the class defined by the formula [CX 3 --(CH 2 ) n ] N --R, where X is H or F, Y is H, F, or Cl, n is a number from 1 to 12, R is a carboxylic acid, an amide, a substituted amide, an amine, an alcohol, or an ester functionality, and N is 1 when R is not an alcohol or amine functionality, but N is 1, 2, or 3 when R is an alcohol or amine functionality, and (c) the inhibitor is soluble in at least one of the constituents of the liquid to the extent necessary to result in a concentration of at least about 0.05%, by weight of the liquid, of dissolved inhibitor in the liquid.
Claim 2
Dependent Claim 246 words
Method for producing an article, the method comprising producing, from a substance comprising a multi-constituent liquid, on an existing surface, a layer having a shape substantially conforming to a predetermined geometry, the liquid being an adhesive or a liquid comprising a component selected from the group consisting of epoxies, polyesters, acrylics, and silicons, the liquid also comprising an effective amount of a material herein designated inhibitor, the inhibitor being capable of forming a film on the surface, with the film-coated surface having a critical surface tension of wetting that is less than the surface tension of the inhibitor-containing liquid, characterized in that (a) the layer produced from the liquid is at room temperature an adherent, substantially solid layer, (b) the inhibitor is selected from the class defined by the formula [CX 3 --(CH 2 ) n ] N --R, where X is H or F, Y is H, F, or Cl, n is a number from 1 to 12, R is a carboxylic acid, an amide, a substituted amide, an amine, an alcohol, or an ester functionality, and N is 1 when R is not an alcohol or amine functionality, but N is 1, 2, or 3 when R is an alcohol or amine functionality, and (c) the inhibitor is soluble in at least one of the constituents of the liquid to the extent necessary to result in a concentration of at least about 0.05%, by weight of the liquid, of dissolved inhibitor in the liquid.
Claim 3
Dependent Claim 8 words
Method of claim 1, wherein X is F.
Claim 4
Dependent Claim 8 words
Method of claim 2, wherein Y is F.
Claim 5
Dependent Claim 10 words
Method of claim 3, wherein n is greater than 3.
Claim 6
Dependent Claim 21 words
Method of claim 4, wherein the liquid contains between about 0.05% and about 5%, by weight of the liquid, of inhibitor.
Claim 7
Dependent Claim 15 words
Method of claim 5, wherein R is a carboxylic acid functionality or an amine functionality.
Claim 8
Dependent Claim 14 words
Method of claim 6, wherein the liquid is an adhesive comprising an epoxy resin.
Claim 9
Dependent Claim 14 words
Method of claim 7 wherein the inhibitor comprises perfluorooctanoic acid or 1H, 1H-pentadecafluorooctyl amine.
Claim 10
Dependent Claim 11 words
Method of claim 5, wherein the combination comprises a curing agent.
Claim 11
Dependent Claim 11 words
Method of claim 5, wherein the combination comprises a coupling agent.
Claim 12
Dependent Claim 10 words
Method of claim 10, wherein the coupling agent is N-beta(aminoethyl)-gamma-aminopropyl-trimethoxysilane.
Claim 13
Dependent Claim 11 words
Method of claim 5, wherein the substance comprises a solid constituent.
Claim 14
Dependent Claim 14 words
Method of claim 12, wherein the solid constituent consists substantially of electrically conductive particles.
Claim 15
Dependent Claim 11 words
Method of claim 13, wherein the conducting particles are silver particles.
Claim 16
Dependent Claim 22 words
Method of claim 7, wherein the inhibitor is added to the epoxy resin prior to adding at least one further constituent thereto.
Claim 17
Dependent Claim 10 words
Method of claim 15, wherein the inhibitor comprises perfluorooctanoic acid.
Claim 18
Dependent Claim 67 words
Method for producing an article comprising a component bonded to a substrate, the method comprising contacting at least a part of the substrate surface with a multi-constituent adhesive comprising at least one epoxy resin and between 0.05% and about 5% by weight of an inhibitor, with the inhibitor comprising perfluorooctanoic acid, or 1H, 1H-pentadecafluorooctyl amine, the method further comprising applying the component to the adhesive-covered substrate surface.
Claim 19
Dependent Claim 67 words
Method for producing an article comprising a component bonded to a substrate, the method comprising contacting at least a part of the substrate surface with a multi-constituent adhesive comprising at least one epoxy resin and between 0.05% and about 5% by weight of an inhibitor, with the inhibitor comprising perfluorooctanoic acid, or 1H, 1H-pentadecafluorooctyl amine, the method further comprising applying the component to the adhesive-covered substrate surface.
Claim 20
Dependent Claim 19 words
Method of claim 17, wherein the adhesive comprises a conductivity component, and the inhibitor consists substantially of perfluorooctanoic acid.
Claim 21
Dependent Claim 26 words
Method of claim 18, wherein the perfluorooctanoic acid is added to the epoxy resin prior to adding at least one further constituent of the adhesive thereto.
Claim 22
Dependent Claim 10 words
Method of claim 19, wherein the adhesive further comprises N-beta(aminoethyl)-gamma-aminopropyl-trimethoxysilane.
Claim 23
Dependent Claim 11 words
Article produced by the method of claim 7, 1, or 17.
Claim 24
Dependent Claim 15 words
Method of claim 17 wherein the component bonded to a substrate is a semiconductor component.
Claim 25
Dependent Claim 33 words
Method of claim 17, further comprising a step for thermally curing, at a temperature above room temperature, the multi-constituent adhesive, the step being carried out subsequent to contacting the substrate with the adhesive.

References Cited (Backward Citations)

US4134456A Cited
US4238528A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-11-20 1988-05-21 1988-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-11-20 1992-05-21 1992-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-11-20 1996-05-21 1996-11-20 $7700.00 Window Closed / Lapsed

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