FR2659341A1 - Conversion and hydrophilisation of sponges made of polyurethane foam by chemical treatment of material - Google Patents

Conversion and hydrophilisation of sponges made of polyurethane foam by chemical treatment of material Download PDF

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Publication number
FR2659341A1
FR2659341A1 FR9002794A FR9002794A FR2659341A1 FR 2659341 A1 FR2659341 A1 FR 2659341A1 FR 9002794 A FR9002794 A FR 9002794A FR 9002794 A FR9002794 A FR 9002794A FR 2659341 A1 FR2659341 A1 FR 2659341A1
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FR
France
Prior art keywords
polyurethane foam
hydrophilisation
conversion
sponges made
chemical treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9002794A
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French (fr)
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FR2659341B1 (en
Inventor
Olivier David Meyer
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Individual
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Individual
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Publication date
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Priority to FR9002794A priority Critical patent/FR2659341B1/en
Publication of FR2659341A1 publication Critical patent/FR2659341A1/en
Application granted granted Critical
Publication of FR2659341B1 publication Critical patent/FR2659341B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/40—Impregnation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Abstract

The process consists in hydrophilising sponges made of polyurethane foam. The latter do not spontaneously become soaked in contact with water. After application of the process they are soft and absorbent. This process consists in treating the material in an alkaline solution for a variable period which is a function of a number of factors. The objective is an improvement of the utilisation conditions in the normal uses of the sponge.

Description

Le présent procédé consiste à hydrophiliser les éponges en mousse de polyuréthane. The present process consists in hydrophilizing the sponges in polyurethane foam.

Les éponges façonnées dans cette matière (utilisées, par exemple, par les peintres en bâtiment) ne s1 imbibent pas spontanément au contact de l'eau ; il faut les malaxer tout en les maintenant immergées. Les conséquences en sont : un travail long et désagréable, l'apparition d'une mousse visqueuse, une "prise d'eau" limitée et un résultat peu satisfaisant. Sponges made of this material (used, for example, by house painters) do not soak spontaneously in contact with water; they must be kneaded while keeping them submerged. The consequences are: long and unpleasant work, the appearance of a viscous foam, a limited "water intake" and an unsatisfactory result.

Après application du procédé, l'éponge est souple et maniable. En humide, l'immersion et l'absorption d'eau sont immédiates, il n'y a pas d'effet de mousse, le matériau a perdu sa brillance initiale au profit d'un aspect mat au toucher doux. L'usage en devient rapide, aisé et efficace. After application of the process, the sponge is flexible and handy. In wet conditions, immersion and absorption of water are immediate, there is no foaming effect, the material has lost its initial gloss in favor of a matt appearance with a soft touch. The use becomes quick, easy and efficient.

Le procédé consiste à traiter le matériau dans une solution alcaline. The process involves treating the material in an alkaline solution.

La durée du traitement dépend de la concentration de la solution, de la nature des agents alcalins, et de la température du milieu de réaction elle peut être de l'ordre de 1 à 48 heures, à titre indicatif.The duration of the treatment depends on the concentration of the solution, on the nature of the alkaline agents, and on the temperature of the reaction medium; it can be of the order of 1 to 48 hours, by way of indication.

L'agent alcalin peut être de l'hydroxyde de soude, de 11 hydroxyde de potassium, de l'ammoniaque, de la méthyl-éthanol-amine ou toute autre base forte, seuls ou combinés. The alkaline agent can be sodium hydroxide, potassium hydroxide, ammonia, methyl-ethanol-amine or any other strong base, alone or in combination.

Le traitement peut se faire tant sur le matériau à l'état semi-fini que sur le produit ouvré (éponge). The treatment can be done both on the material in the semi-finished state and on the worked product (sponge).

I1 peut se faire par immersion (avec ou sans agitation) ou par arrosage.  It can be done by immersion (with or without agitation) or by watering.

Claims (4)

REVENDICATIONS 1) Procédé pour hydrophiliser les éponges en mousse de polyuréthane, caractérisé en ce qu'il consiste en l'action d'une solution alcaline sur le matériau de base.1) Method for hydrophilizing sponges made of polyurethane foam, characterized in that it consists of the action of an alkaline solution on the base material. 2) Procédé selon la revendication 1) en ce que la durée de traitement peut être ajustée selon la concentration de la solution, la nature des agents alcalins, la température du milieu de réaction.2) Method according to claim 1) in that the treatment time can be adjusted according to the concentration of the solution, the nature of the alkaline agents, the temperature of the reaction medium. 3) Procédé selon les revendications 1) et 2) en ce qu'il peut être appliqué sur le matériau semi-fini ou sur le produit ouvré.3) Process according to claims 1) and 2) in that it can be applied to the semi-finished material or to the worked product. 4) Procédé selon les revendications 1) , 2) et 3) en ce qu'il peut être fait par immersion (avec ou sans agitation) ou par arrosage. 4) Method according to claims 1), 2) and 3) in that it can be done by immersion (with or without agitation) or by watering.
FR9002794A 1990-03-06 1990-03-06 TRANSFORMATION AND HYDROPHILIZATION OF POLYURETHANE FOAM SPONGES BY CHEMICAL TREATMENT OF THE MATERIAL. Expired - Fee Related FR2659341B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9002794A FR2659341B1 (en) 1990-03-06 1990-03-06 TRANSFORMATION AND HYDROPHILIZATION OF POLYURETHANE FOAM SPONGES BY CHEMICAL TREATMENT OF THE MATERIAL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9002794A FR2659341B1 (en) 1990-03-06 1990-03-06 TRANSFORMATION AND HYDROPHILIZATION OF POLYURETHANE FOAM SPONGES BY CHEMICAL TREATMENT OF THE MATERIAL.

Publications (2)

Publication Number Publication Date
FR2659341A1 true FR2659341A1 (en) 1991-09-13
FR2659341B1 FR2659341B1 (en) 1994-09-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9002794A Expired - Fee Related FR2659341B1 (en) 1990-03-06 1990-03-06 TRANSFORMATION AND HYDROPHILIZATION OF POLYURETHANE FOAM SPONGES BY CHEMICAL TREATMENT OF THE MATERIAL.

Country Status (1)

Country Link
FR (1) FR2659341B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004113A1 (en) * 1991-08-12 1993-03-04 The Procter & Gamble Company Method for hydrophilizing absorbent foam materials
US5387207A (en) * 1991-08-12 1995-02-07 The Procter & Gamble Company Thin-unit-wet absorbent foam materials for aqueous body fluids and process for making same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE546302A (en) * 1955-03-21 1956-04-14 Goodyear Tire & Rubber PROCESS FOR TREATMENT OF FLEXIBLE CELLULAR MATERIALS
FR1308604A (en) * 1961-08-23 1962-11-09 C T A Cie Ind De Textiles Arti Improvements to cellular materials, foams, sponges, hydrophilic polyurethanes
DD105580A2 (en) * 1971-11-19 1974-05-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE546302A (en) * 1955-03-21 1956-04-14 Goodyear Tire & Rubber PROCESS FOR TREATMENT OF FLEXIBLE CELLULAR MATERIALS
FR1308604A (en) * 1961-08-23 1962-11-09 C T A Cie Ind De Textiles Arti Improvements to cellular materials, foams, sponges, hydrophilic polyurethanes
DD105580A2 (en) * 1971-11-19 1974-05-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004113A1 (en) * 1991-08-12 1993-03-04 The Procter & Gamble Company Method for hydrophilizing absorbent foam materials
US5387207A (en) * 1991-08-12 1995-02-07 The Procter & Gamble Company Thin-unit-wet absorbent foam materials for aqueous body fluids and process for making same
TR26327A (en) * 1991-08-12 1995-03-15 Procter & Gamble METHOD FOR HYDROPHILIZING ABSORPELY FOAM MATERIALS

Also Published As

Publication number Publication date
FR2659341B1 (en) 1994-09-30

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