DE19817445A1 - Reducing odor from foam, especially amine odor from polyurethane foam - Google Patents

Reducing odor from foam, especially amine odor from polyurethane foam

Info

Publication number
DE19817445A1
DE19817445A1 DE19817445A DE19817445A DE19817445A1 DE 19817445 A1 DE19817445 A1 DE 19817445A1 DE 19817445 A DE19817445 A DE 19817445A DE 19817445 A DE19817445 A DE 19817445A DE 19817445 A1 DE19817445 A1 DE 19817445A1
Authority
DE
Germany
Prior art keywords
foam
amines
odor
liquid
moistened
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.)
Withdrawn
Application number
DE19817445A
Other languages
German (de)
Inventor
Thorsten Schmitt
Helmut Pfuhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otto Bock Orthopadische Industrie KG
Original Assignee
Otto Bock Orthopadische Industrie KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Otto Bock Orthopadische Industrie KG filed Critical Otto Bock Orthopadische Industrie KG
Priority to DE19817445A priority Critical patent/DE19817445A1/en
Publication of DE19817445A1 publication Critical patent/DE19817445A1/en
Withdrawn legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5609—Purging of residual gas, e.g. noxious or explosive blowing agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/14—Manufacture of cellular products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Toxicology (AREA)
  • Treating Waste Gases (AREA)

Abstract

Process for reducing odor from foam, especially by removing amines from polyurethane foam, comprises first moistening the foam and then subjecting it to microwave treatment and suction to remove the vapor formed.

Description

Die Erfindung betrifft ein Verfahren zur Geruchsreduzierung von Schaumstoffen.The invention relates to a method for reducing odor Foams.

Das seit langem bestehende Problem der Geruchsbelastung im Po­ lyurethanschaum (PUR-Schaum) soll erfindungsgemäß dadurch gelöst werden, daß mit Hilfe von Mikrowellenenergie die geruchsverur­ sachenden Amine aus dem Schaum ausgetrieben werden.The long-standing problem of odor pollution in the buttocks According to the invention, lyurethane foam (PUR foam) is to be dissolved in this way be that with the help of microwave energy the odor relevant amines can be driven out of the foam.

Bei einem erfindungsgemäßen Verfahren zum Ausbringen von Aminen aus PUR-Schaum wird der Schaumstoff zuerst angefeuchtet und dann mit Mikrowellen beaufschlagt. Die hierdurch verdampfte Feuchtig­ keit wird dann abgesaugt.In a method according to the invention for the application of amines made of PUR foam, the foam is moistened first and then charged with microwaves. The moisture evaporated as a result speed is then suctioned off.

Dabei ist es zweckmäßig, wenn die Behandlung an kontinuierlich vorgeförderten Schaumstoffteilen, z B. einer Schaumstoffbahn, einzelnen Schaumstoffkörpern oder mit Schaumstoff umschäumten Festkörpern vorgenommen wird. Vorzugsweise wird dabei der Schaumstoff zunächst befeuchtet und dann mit Mikrowellen beauf­ schlagt. Während der Mikrowellenbeaufschlagung wird vorzugsweise Luft zugeführt und zusammen mit der verdampfenden Flüssigkeit abgesaugt. It is useful if the treatment is continuous pre-conveyed foam parts, e.g. a foam sheet, individual foam bodies or foamed with foam Solids is made. Preferably, the First moisten the foam and then apply microwaves strikes. During microwave exposure is preferred Air supplied and together with the evaporating liquid aspirated.  

Das Anfeuchten des Schaumstoffs erfolgt vorzugsweise durch Auf­ sprühen einer Flüssigkeit, die Wasser und/oder Methanol, Etha­ nol, Diol oder dergleichen in verschiedenen Aggregatzuständen sein kann.The foam is preferably moistened by opening spray a liquid containing water and / or methanol, etha nol, diol or the like in various physical states can be.

Dabei ist es zweckmäßig, wenn durch die Beaufschlagung mit Mi­ krowellen die im Schäumprozeß als Katalysator eingesetzten ter­ tiären aliphatischen Amine ausgetrieben werden. Dabei erfolgt unter dem Einfluß der Mikrowellenbeaufschlagung die Lösung der Bindung der Amine an den Schaumstoff und die nachfolgende Bin­ dung der Amine an das Wasser nach folgender Formel:
It is expedient if the exposure to Mi microwave waves, the tertiary aliphatic amines used in the foaming process as a catalyst are driven off. Under the influence of microwave exposure, the binding of the amines to the foam and the subsequent binding of the amines to the water take place according to the following formula:

Die an die verdampfende Flüssigkeit gebundenen Amine werden über eine Absaugung abgeführt und können bei Bedarf bei hohen Tempe­ raturen gecrackt oder für einen erneuten Einsatz zurückgewonnen werden.The amines bound to the evaporating liquid are transferred suction and can be removed if necessary at high temperatures cracked or recovered for reuse become.

Der erfindungsgemäß von den Aminen befreite Schauin ist von dem typischen, durch die Amine verursachten Geruch befreit.The amine freed from the amines according to the invention is of the typical odor caused by the amines.

Das erfindungsgemäße Verfahren ist in erster Linie bestimmt zur Behandlung von PUR-Weichschaum. Der Einsatz im Bereich PUR-Hart­ schaum und PUR-Integralschaum bedarf einer Anpassung des Verfah­ rens an das jeweilige Material. The method according to the invention is primarily intended for Treatment of PUR soft foam. Use in the area of PUR hard foam and PUR integral foam require an adjustment of the process rens to the respective material.  

In der Zeichnung ist schematisch eine Anlage zur Verringerung der Geruchsbelastung einer Schaumstoffbahn dargestellt.In the drawing, a plant for reducing is schematically the odor level of a foam sheet is shown.

Eine in Richtung der eingezeichneten Pfeile kontinuierlich vor­ geförderte Schaumstoffbahn 1 wird auf ihrer Unterseite bei 2 angefeuchtet, beispielsweise durch Aufsprühen eines Wasser­ nebels. Die so angefeuchtete Schaumstoffbahn 1 wird dann durch einen abgeschirmten Bestrahlungsraum 3 gefördert und dort mit von Mikrowellenerzeugern 4 ausgesandten Mikrowellen 5 beauf­ schlagt. In den Bestrahlungsraum 3 wird unterhalb der Schaum­ stoffbahn 1 Frischluft 6 zugeführt. Aus dem Bestrahlungsraum 3 wird oberhalb der Schaumstoffbahn 1 die mit den freigesetzten Aminen belastete Abluft 7 abgesaugt.A continuously in the direction of the arrows drawn before the foam sheet 1 is moistened on its underside at 2 , for example by spraying a water mist. The thus moistened foam web 1 is then conveyed through a shielded radiation room 3 and is hit with microwaves 5 emitted by microwave generators 4 . In the radiation room 3 below the foam web 1 fresh air 6 is supplied. The exhaust air 7 contaminated with the released amines is sucked out of the radiation chamber 3 above the foam web 1 .

Claims (9)

1. Verfahren zur Verringerung der Geruchsbelastung von Schaum­ stoffen, insbesondere zum Ausbringen von Aminen aus PUR-Schaumstoffen, wobei der Schaumstoff zuerst angefeuchtet und dann mit Mikrowellen beaufschlagt und die hierdurch verdampfte Feuchtigkeit abgesaugt werden.1. Procedure for reducing the odor pollution of foam substances, especially for the application of amines PUR foams, the foam being moistened first and then exposed to microwaves and this evaporated moisture can be extracted. 2. Verfahren nach Anspruch 1, gekennzeichnet durch die Behand­ lung kontinuierlich vorgeförderter Schaumstoffteile.2. The method according to claim 1, characterized by the treatment development of continuously conveyed foam parts. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schaumstoff befeuchtet und dann mit Mikrowellen beaufschlagt wird.3. The method according to claim 1 or 2, characterized in that the foam is moistened and then microwave is applied. 4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeich­ net, daß während der Mikrowellenbeaufschlagung Luft zuge­ führt und zusammen mit der verdampfenden Flüssigkeit abge­ saugt wird. 4. The method according to claim 1, 2 or 3, characterized net that air is supplied during microwave exposure leads and abge together with the evaporating liquid sucks.   5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Anfeuchten des Schaumstoffes durch Aufsprühen einer Flüssigkeit erfolgt.5. The method according to any one of the preceding claims, characterized characterized in that the moistening of the foam by A liquid is sprayed on. 6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Flüssigkeit zum Anfeuchten des Schaumstoffs Wasser und/oder Methanol, Ethanol, Diol oder dergleichen in verschiedenen Aggregatzuständen verwendet werden.6. The method according to any one of the preceding claims, characterized characterized in that as a liquid for moistening the Foam water and / or methanol, ethanol, diol or the same used in different states of matter become. 7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß durch die Beaufschlagung mit Mikrowel­ len die im Schäumprozeß als Katalysator eingesetzten ter­ tiären aliphatischen Amine ausgetrieben werden.7. The method according to any one of the preceding claims, characterized characterized in that by exposure to microwaves len the ter used in the foaming process as a catalyst tertiary aliphatic amines. 8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß unter dem Einfluß der Mikrowellenbeauf­ schlagung die Lösung der Bindung der Amine an den Schaum­ stoff und die nachfolgende Bindung der Amine an das Wasser nach folgender Formel erfolgt:
8. The method according to any one of the preceding claims, characterized in that, under the influence of microwave exposure, the solution of the binding of the amines to the foam and the subsequent binding of the amines to the water is carried out according to the following formula:
9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die an die verdampfte Flüssigkeit ge­ bundenen und mit dieser abgesaugten Amine unter Einfluß hoher Temperaturen gecrackt oder für einen erneuten Einsatz zurückgewonnen werden.9. The method according to any one of the preceding claims, characterized characterized in that the ge to the evaporated liquid bound and extracted with this amines under influence cracked at high temperatures or for re-use be recovered.
DE19817445A 1998-04-20 1998-04-20 Reducing odor from foam, especially amine odor from polyurethane foam Withdrawn DE19817445A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19817445A DE19817445A1 (en) 1998-04-20 1998-04-20 Reducing odor from foam, especially amine odor from polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19817445A DE19817445A1 (en) 1998-04-20 1998-04-20 Reducing odor from foam, especially amine odor from polyurethane foam

Publications (1)

Publication Number Publication Date
DE19817445A1 true DE19817445A1 (en) 1999-10-21

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Country Status (1)

Country Link
DE (1) DE19817445A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015014A1 (en) * 2007-07-11 2009-01-14 Bayer MaterialScience AG Method for drying foams made of aqueous PUR dispersions
WO2015031424A1 (en) * 2013-08-27 2015-03-05 Johnson Controls Technology Company Method to reduce the voc-emission from an automotive interior component
US10842653B2 (en) 2007-09-19 2020-11-24 Ability Dynamics, Llc Vacuum system for a prosthetic foot

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931498A1 (en) * 1988-09-22 1990-03-29 Toyo Engineering Corp METHOD FOR CLEANING A POLYMER
DE3840079C2 (en) * 1988-11-28 1990-08-30 Illbruck Gmbh, 5090 Leverkusen, De
DE4133306A1 (en) * 1990-10-11 1992-04-16 Metzeler Schaum Gmbh Mfr. of isocyanate-based elastic foams - by heat tempering to reduce tendency towards fogging
EP0672708A1 (en) * 1992-09-15 1995-09-20 Wolf-Dietrich Schöllhorn Process for drying foam moldings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931498A1 (en) * 1988-09-22 1990-03-29 Toyo Engineering Corp METHOD FOR CLEANING A POLYMER
DE3840079C2 (en) * 1988-11-28 1990-08-30 Illbruck Gmbh, 5090 Leverkusen, De
DE4133306A1 (en) * 1990-10-11 1992-04-16 Metzeler Schaum Gmbh Mfr. of isocyanate-based elastic foams - by heat tempering to reduce tendency towards fogging
EP0672708A1 (en) * 1992-09-15 1995-09-20 Wolf-Dietrich Schöllhorn Process for drying foam moldings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 4-77534 A.,In: Patents Abstracts of Japan, C-957,June 30,1992,Vol.16,No.295 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015014A1 (en) * 2007-07-11 2009-01-14 Bayer MaterialScience AG Method for drying foams made of aqueous PUR dispersions
WO2009007037A1 (en) * 2007-07-11 2009-01-15 Bayer Materialscience Ag Method for the drying of foams composed of aqueous pu dispersions
US10842653B2 (en) 2007-09-19 2020-11-24 Ability Dynamics, Llc Vacuum system for a prosthetic foot
WO2015031424A1 (en) * 2013-08-27 2015-03-05 Johnson Controls Technology Company Method to reduce the voc-emission from an automotive interior component

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