DE1669888A1 - Process for the production of high-frequency weldable polyurethane foams - Google Patents
Process for the production of high-frequency weldable polyurethane foamsInfo
- Publication number
- DE1669888A1 DE1669888A1 DE19661669888 DE1669888A DE1669888A1 DE 1669888 A1 DE1669888 A1 DE 1669888A1 DE 19661669888 DE19661669888 DE 19661669888 DE 1669888 A DE1669888 A DE 1669888A DE 1669888 A1 DE1669888 A1 DE 1669888A1
- Authority
- DE
- Germany
- Prior art keywords
- polyurethane foams
- production
- polyols
- polyol
- frequency weldable
- 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.)
- Pending
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
- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
-
- 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)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
Verfahren zur Herstellung hochfrequenzverschweißbarer ========================================= Polyurethan-Schaumstoffe ======================= Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung hochfrequenzverschweißbarer Polyurethan-Schaumstaffe.Method of manufacturing high frequency weldable ================================================================== Polyurethane Foams ======================= The present invention relates a process for the production of high-frequency weldable polyurethane foam poles.
In laufend steigendem Mafle sieht man sich in der Kunststoffindustrie vor das Problem gestellt, Polyurethanschaume mit Folien, insbesondere aus Polyvinylchlorid, zu verbnden, und zwar einerseits, um besondere Ziereffekte zu erzielen, und andererseits, um den Schaum gegen atmosphärische Eine flüsse zu schützen. Dabei glbt es mehrere Möglichkeiten zur Verbindung der Folien mi. t den Schäumen, von denen die wichtigsten das Verkleben, Aufnähen oder Hochfrequenzverschweißen sind.You can see yourself in the plastics industry in ever-increasing proportions posed the problem of using polyurethane foams with foils, in particular made of polyvinyl chloride, to combine, on the one hand to achieve special decorative effects, and on the other hand, to protect the foam against atmospheric influences. There are several Options for connecting the foils mi. t the foams, the most important of which gluing, sewing or high-frequency welding.
Es ist bekannt, daß Polyurethanschäure, und zwar sowohl Polyester-als auch PolyätherurethanschauMe, nur schlecht zu verschweißen sind. Zur Überwindung dieses Nachtelles wurden bisher Kunststoffe in don schah-m eingearbeitet, dia einen gewissen Dipolcharakter besitzen. Aa häufigsten wurde fUr diesen Zweck Polyvinylohlorid verwendete das im allgemeinen in pastöser Form direkt bei der Verschäumung in den Mischkopf sudosiert wlrdv Dieses Verfahren hat jedoch den Nachteil, daS einerseits grose Mengen an dam einzumengendem Zusatz erforderlich sind, so daß mitunter die Gefahr einer Produktionsstörung gegeben ist, während andererseits insbesondere die Verschweißbarkeit von Polyätherschäumen nur unmerklich verbessert wird. So wurde festgestellt, daß die Festigkeit einer Schweißnaht, die an sich sehr gering ist, rach 10 la 20-ständiger Erwär@ung auf 70°C noch weiterhin an Festigkeit verliert. It is known that polyurethane acid, both polyester as also PolyätherurethanschauMe, are difficult to weld. To overcome So far, plastics have been incorporated into don Shah-m, dia one have a certain dipole character. Aa most commonly used for this purpose was polyvinyl chloride generally used this in pasty form directly when foaming in the Mixing head is dosed wlrdv However, this method has the disadvantage that on the one hand Large amounts of dam to be constricted additive are required, so that sometimes the There is a risk of production disruption, while on the other hand in particular the The weldability of polyether foams is only imperceptibly improved. So became found that the strength of a weld, which in itself is very low, After 10 la 20 hours of heating to 70 ° C, it continues to lose strength.
Diane Nachteile werden durch das erfindungsgemäße Verfahren in Uberrasaher Weise überwunden.Dieses Verfahren zur Herstellung hochfrequenzverschweißbarer Polyurethan Schaumstoffe aus einer Polyol-und einer Isocyanatkomponente unter Zusatz von Verbindungen mit Dipolcharakter besteht darin,daß als derartige Zusätze wasserlösliche anorganische oder organische Salze mit ausgeprägtem Dipolcharakter,die in wässriger Lösung keine Halogenlonan abspalten, verwendet werden. Vorzugsweise werden Salze mit einer hohen Dielektrizitätskonstante@eingesetzt.ZweckmMigerweise werden diese Zusätze in Mengen von 0, 1 - 10%, berechnet auf das eingesetzte Polyol oder den verwendeten Polyester, der Reaktionsmischung zugesetzt, wobei sich als besonders geeignete Zusätze Ratriumthiosulfat und Matriumacetat erwiesen haben.The disadvantages of the method according to the invention are in uberraher This process for the production of high-frequency weldable polyurethane Foams made from a polyol component and an isocyanate component with the addition of compounds with a dipole character consists in the fact that water-soluble inorganic additives are used as such additives or organic salts with a pronounced dipole character, which do not exist in aqueous solution Cleaving off Halogenlonan can be used. Preferably salts with a high Dielectric constant @ used. For the purpose, these additives are used in quantities from 0, 1 - 10%, calculated on the polyol used or the one used Polyester, added to the reaction mixture, proving to be particularly suitable additives Sodium thiosulfate and sodium acetate have been shown.
FUr dan erfindungagemKße Verfahren eignen sich als PolyoiLe le im Handel erhältlichen geradkettigen, verzweigten oder etppbn Polyole (Polyole, deren sekundäre OH-Gruppen nachträglich duroh Uots Mit Xtbylenoxyd oder Propylenoxyd in primäre OH-Gruppen umgewandelt worden sind), sowie die handelsüblichen, geradkettigen oder verzweigten Polyester.Processes according to the invention are suitable as polyols Commercially available straight-chain, branched or etppbn polyols (polyols, their secondary OH groups subsequently duroh Uots With ethylene oxide or propylene oxide in primary OH groups have been converted), as well as the commercial, straight-chain or branched polyester.
Als Isocyanatkomponenten werden vorzugsweise 2,4-Toluylenodor 2,6-Toluylendiisocyanat bzw. Mischungen der Isomeren verwendet. Der Reaktionsmischung werden außerdem die normalerweise verwendeten Aminbeschleuniger, Stabilisatoren oder metallorganischen Verbindungen zugesetzt.The isocyanate components are preferably 2,4-toluene or 2,6-toluene diisocyanate or mixtures of the isomers are used. The reaction mixture are also the normally used amine accelerators, stabilizers or organometallic agents Compounds added.
Die nach X erfindungsgenMen Verfahren erhaltenen Schaua) stoffe entapreohen in ihren Eigenschaften den Schaumstoffen, die ohne einen Zusatz zur Erhöhung der Hochfrequenzverschweißbartceit hergestellt wurden. Sie lassen sich einwandfrei hochfrequenzverschweißen, wobei die erhaltene Schweißnaht auch =Rgib einer 20-stündigen Wärmealterung bei 70°C nichts von ihrer Festigkeit verliert.The substances obtained by X according to the invention are entapreohen in their properties the foams, which without an additive to increase the High frequency welded joints were made. They can be perfectly high-frequency welded, where the weld seam obtained also = Rgib a 20-hour heat aging 70 ° C does not lose any of its strength.
Die folgenden Beispiele erläutern die Erfindung, ohne sie zu beschränken.The following examples illustrate the invention without restricting it.
Beispiel l 100 Tells veinas handelsüblichen PolySthers mit einem Molekulargwiaht von 2500 - 3000 werden mit 3,4 Teilen Wasser, 0, 20 Teilen Endoäthylenpiperazin, 1 Teil stabilisierendem Silikondl und 0, 20 Teilen Zinnoctoat versetzt und mit veines Oeaisoh aus 80 Teilen 2,4- und 20 Teilen 2,6-Toluylendiisooyanat enteprechend einer Kennzahl von 105 verschSumt. In der oben genamten Wasseranteil wird Natriumthiosulfat in solcher Menge gelost, da8 0, 5 Telle auf 100 Teile Polyol entez fallen.Example 1 100 tells of commercial polyesters with a molecular weight from 2500 - 3000 with 3.4 parts of water, 0, 20 parts of endoethylene piperazine, 1 part of stabilizing silicone oil and 0.20 parts of tin octoate and mixed with veines Oeaisoh from 80 parts of 2,4- and 20 parts of 2,6-toluylene diisooyanate corresponding to one Key figure of 105 muddled. In the above mentioned water content there is sodium thiosulphate Dissolved in such an amount that 0.5 parts per 100 parts of polyol are present.
Man erhält dabei einen Polyurethanschaum mit einem Raumgtwleht von etwa 29 kg/m3, der sich sehr gut, z.B. mit PVC-Folien, hochfrequenzverschweißen läßt.This gives a polyurethane foam with a spatial density of about 29 kg / m3, which can be welded very well, e.g. with PVC foils, at high frequency leaves.
Beispiel 2 100 Teile elnes schwach ver7. weigten Polyesters aus Adipin-§ure, Diäthylenglykol und Triol mit einem mitteleren Molekulargewicht von 2000, wie er im liandel erhältlich ist, werden mit einee normalen Katalysatorgemisch mit 2,3 Teilen Wasser und einem Gemisch aus 65 Teilen 2,4-Toluylendiisocyanat mit 35 Teilen 2, 6-Toluylendiisocyanat, in der Menge entsprechend der Kennzahl von 105, verschäumt, wobei der. Wasser 1,0 Teile Natriumthiosulfatr auf den Polyester gerechnet, zugesetzt werden. Man erhäl dabei einen gut hochfrequenzverschweißbaren Polyuret mit einem Raumgewicht von 38 kg/m3.Example 2 100 parts of a weakly ver7. refined polyesters from adipic acid, Diethylene glycol and triol with an average molecular weight of 2000 like him is commercially available, are with a normal catalyst mixture with 2.3 Parts of water and a mixture of 65 parts of 2,4-tolylene diisocyanate with 35 parts 2, 6-toluene diisocyanate, in the amount corresponding to the index of 105, foamed, where the. Water, 1.0 part of sodium thiosulfate, calculated on the polyester, was added will. The result is a polyurethane that can be welded well at high frequency with a density of 38 kg / m3.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED0049694 | 1966-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1669888A1 true DE1669888A1 (en) | 1971-08-26 |
Family
ID=7052081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19661669888 Pending DE1669888A1 (en) | 1966-03-24 | 1966-03-24 | Process for the production of high-frequency weldable polyurethane foams |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1669888A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0587216A1 (en) * | 1992-09-01 | 1994-03-16 | SOLVAY (Société Anonyme) | Polymer compositions for the manufacture of high frequency sealable articles, masterbatch for the preparation of these compositions and articles made therefrom |
-
1966
- 1966-03-24 DE DE19661669888 patent/DE1669888A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0587216A1 (en) * | 1992-09-01 | 1994-03-16 | SOLVAY (Société Anonyme) | Polymer compositions for the manufacture of high frequency sealable articles, masterbatch for the preparation of these compositions and articles made therefrom |
BE1006138A3 (en) * | 1992-09-01 | 1994-05-24 | Solvay | Polymer composition for the production of articles in high frequency weldable, master blend compositions for these articles and preparation of products from them. |
US5627223A (en) * | 1992-09-01 | 1997-05-06 | Solvay (Soci et e Anonyme) | Polymeric compositions for the production of high-frequency-weldable articles, master mixture for the preparation of these compositions and articles produced from the latter |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2911719C2 (en) | Process for the production of lightweight foams from thermoplastic crystalline plastics | |
DE1494914A1 (en) | Activated azodicarbonamide blowing agent mixture, foamable plastic or plastomer mixture with a content of activated azodicarbonamide blowing agent mixture and process for increasing the decomposition rate of azodicarbonamide | |
DE2809839A1 (en) | PLASTICIZERS | |
DE962649C (en) | Process for the production of foams using polyurethane foam waste | |
DE2621582C2 (en) | Process for the production of flame-retardant, smoke-free polyurethane foams | |
DE1570572A1 (en) | Process for the production of epoxy foams | |
DE1203460B (en) | Process for the production of foamable molding compounds from polystyrene | |
DE2037027A1 (en) | Process for the production of foam bodies | |
DE1719311A1 (en) | Vinyl foam | |
DE2022208A1 (en) | Improved High Frequency Weldable Foams and Methods for Making Them | |
DE2246696A1 (en) | POLYURETHANE FOAM AND THE METHOD FOR THEIR PRODUCTION | |
DE1669888A1 (en) | Process for the production of high-frequency weldable polyurethane foams | |
DE1170631B (en) | Process for the production of stabilized, halogen-containing polymer powders | |
DE2327131B2 (en) | Method of curing a polyester blend | |
DE1719325B2 (en) | Process for achieving the weldability of elastic polyurethane foams | |
EP0019146A1 (en) | Combination of foaming agents based on azodicarbonamide, its preparation and its use for the preparation of porous synthetic thermoplastic articles | |
DE1469899A1 (en) | Flame retardant plastics | |
DE1694560A1 (en) | Process for the production of flame-retardant, in particular non-flammable polyurethane foams | |
DE1952803A1 (en) | Process for the production of flame-retardant, self-extinguishing, soft-elastic polyurethane foams | |
DE1669693B2 (en) | Flame retardants | |
DE3139401C2 (en) | Stabilizing polyether or polyester molding compounds against premature reactions | |
DE1769583A1 (en) | Process for the production of a weldable polyether or polyester foam | |
DE1126136B (en) | Process for the production of polyesters of terephthalic acid | |
DE1028332B (en) | Process for the remuneration of polyethylene which has been produced by the low-pressure process | |
DE1443515C (en) |