EP0069333A2 - Process and means for the preparation of stable aqueous textile stiffeners - Google Patents
Process and means for the preparation of stable aqueous textile stiffeners Download PDFInfo
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- EP0069333A2 EP0069333A2 EP82105810A EP82105810A EP0069333A2 EP 0069333 A2 EP0069333 A2 EP 0069333A2 EP 82105810 A EP82105810 A EP 82105810A EP 82105810 A EP82105810 A EP 82105810A EP 0069333 A2 EP0069333 A2 EP 0069333A2
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- starch
- ester
- phosphoric acid
- per
- water
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
Definitions
- the present invention relates to a method and means for the production of aqueous solutions of powdery textile stiffeners which are characterized by favorable swelling and solution properties and whose aqueous solutions are particularly suitable for use in laundries due to their good stability in storage.
- the starch-based textile stiffeners usually used in commercial laundries can be distributed well in cold water when producing a master batch, but have the major disadvantage that they easily form a sediment when standing still in the storage tank, which can possibly become so firm that he can no longer be stirred. Since the stock solutions prepared with cold water, as well as the more dilute starch-containing rinsing bath, are unstable. Dispersions, there are a number of disadvantages. So - if you want to avoid sediment formation in the stock container - constant stirring is necessary. Nevertheless, blockages can occasionally occur in lines and on valves when the system is idle for a long time. Furthermore, metering pumps can leak over time and the pump housing can be damaged by increased abrasion. Eventually it can get in the flow troughs under the dewatering presses or centrifuges to collect the starch contained in the rinse water. Since starch is an excellent breeding ground for bacteria, this leads to hygienic problems.
- this stiffening agent should also meet a number of other requirements.
- the stiffening agent must be able to be prepared in cold water of any degree of hardness, but especially also in softened water, especially since softeners usually work with softened water. Since usually only one starch batch container is available, the dissolving time of the stiffening agent must be very short. Even when the agitators are inefficient, the stiffening agent must be able to be distributed without lump formation.
- the prepared stock solution must not contain any hard particles in order to avoid excessive wear on the pumps.
- the stiffening agent must be able to form a base with a concentration of at least 2%. After all, there must also be no precipitation when the pumped-off or spun-off residual solution meets the rinse water in order to avoid starch accumulation in the area of the centrifuging and dewatering presses and thus hygienic problems. This problem is solved by the invention described below.
- the invention relates to a process for the preparation of storage-stable, aqueous textile strips using starch phosphoric acid partial esters and their salts, characterized in that to improve the swellability of the powdery starch ester in cold water, the swelling process in the presence of a water-soluble calcium salt corresponding to an amount of 0. 01 g to 0.5 g, preferably 0.02 g to 0.2 g Ca ++ ions per 100 g starch ester.
- Starch phosphoric acid partial esters are known. They are produced by reacting native starch, such as corn, rice or grain starch, with phosphoric acid or its reactive derivatives in the presence of acid-binding compounds at temperatures between 120 ° and 170 ° C. In addition to the esterification reaction, there is also a partial depolymerization of the starch.
- the esterification products are i.a. used as a sizing and stiffening agent for textiles.
- aqueous stiffness solutions using phosphate starches can, however, lead to considerable difficulties due to the formation of lumps and insoluble residues, which can lead to the difficulties already mentioned, particularly in laundries, in particular if the stiffness solutions are used for a larger or continuous need and above a longer one Period.
- these difficulties are avoided if the swelling and dissolving process are carried out in the presence of calcium ions which have previously been added to the preparation water, but preferably to the starch phosphoric acid ester in the form of water-soluble calcium salts.
- Suitable calcium salts are, for example, calcine chloride, calcium nitrate, calcium hydrogen phosphate, calcium acetate, calcium gluconate or calcium lactate. The amount of these salts is to be measured so that 0.01 to 0.5 g, preferably 0.02 to 0.2 g Ca ++ ions are accounted for per 100 g starch phosphoric acid partial ester.
- the calcium salts can be mixed with the starch phosphoric acid partial esters in any suitable manner, for example by soaking or spraying the starch esters with an aqueous calcium salt solution or powdering them with a calcium salt and, if appropriate, subsequently drying them.
- Starch esters which additionally contain urea in amounts of 2 to 25 g, preferably 5 to 20 g, based on 100 g of starch ester, have a particularly good swelling and dissolving capacity.
- the urea can be introduced using conventional mixing and kneading devices before, during or after the phosphating reaction.
- starch phosphoric acid esters whose PO 4 content is 2 to 12, preferably 4 to 8 g per 100 g of starch have proven to be very suitable.
- the partial esters expediently come as salts of sodium, potassium, Ammonium or organic ammonium bases for use.
- Suitable organic ammonium bases are, for example, mono-, di- or trialkanolamines which are derived from ethanol, propanol or i-propanol, and also guanidine and morpholine.
- Preferred salts are the partial phosphorus ester salts of sodium and ammonium.
- the starch phosphoric acid partial esters or their salts can be used together with the calcium salts and the urea, which is preferably present as a constituent of the mixture, without further additives for preparing the aqueous textile stiffness or a stock solution, the content of this solution being 2 g to 50 g, preferably 3 g to Can be 30 g per liter.
- mixtures of the starch phosphoric acid partial esters or their salts with other known water-soluble or water-swellable polymers which have stiffening or finishing properties can also be used to prepare the stiff or stock solutions. Suitable are e.g.
- soluble starch also starch ethers, such as methyl, hydroxyethyl and hydroxypropyl starch or starch esters, such as carboxymethyl starch.
- starch ethers such as methyl, hydroxyethyl and hydroxypropyl starch or starch esters, such as carboxymethyl starch.
- starch esters such as carboxymethyl starch.
- mixed ethers and esters containing different ether and / or ester groups are also suitable. The proportion of these additional high polymers or starch and starch derivatives should not exceed 50% by weight of the mixture.
- the stiffening agents or their aqueous batches can additionally contain amounts of up to 2% by weight, preferably up to 1%, based on starch esters, of smoothing and ironing aids, such as silicones, polyoxyethylene waxes or borax.
- preservatives such as formaldehyde, glyoxal, bromonitroalcohols, tributyltin benzoate, pyridine thione salts, halogenated carbanilides, halogenated salicylanilides, substituted diphenyldichloromethanes and halogenophenols, furthermore optical brighteners, fragrances and additives which exert a bleaching action on the sodium sulfite potassium ester or potassium sulfite, to be present.
- preservatives such as formaldehyde, glyoxal, bromonitroalcohols, tributyltin benzoate, pyridine thione salts, halogenated carbanilides, halogenated salicylanilides, substituted diphenyldichloromethanes and halogenophenols, furthermore optical brighteners, fragrances and additives which exert a bleaching action on the sodium sulfite potassium ester or potassium s
- a mixture of 86.2 parts by weight of a dried, powdery starch phosphoric acid partial ester in the form of the ammonium salt (PO content 5.5 g / 100 g starch) and 8.1 parts by weight of urea were initially mixed in a mixer with a to lighten the yellowish colored starch ester Sprayed solution of 1.53 sodium pyrosulfite in 2.9 parts by weight of deionized water. After a mixing time of 2 minutes, 0.11 parts by weight of calcium chloride in 1.16 parts by weight of deionized water were sprayed on in the same way and then mixed for a further 5 minutes. A free-flowing powder was obtained which, after sieving off small amounts of coarse grain (over 1 mm grain size), could be used immediately or filled.
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren und Mittel zur Herstellung wäßriger Lösungen von pulverförmigen Textilsteifen, die sich durch günstige Quell- und Lösungseigenschaften auszeichnen und deren wäßrige Lösungen sich aufgrund ihrer guten Stabilität bei der Bevorratung insbesondere zur Verwendung in Wäschereibetrieben eignen.The present invention relates to a method and means for the production of aqueous solutions of powdery textile stiffeners which are characterized by favorable swelling and solution properties and whose aqueous solutions are particularly suitable for use in laundries due to their good stability in storage.
Die in gewerblichen Wäschereien üblicherweise verwendeten Textilsteifen auf Stärkebasis lassen sich bei der Herstellung eines Stammansatzes zwar gut in kalten Wasser verteilen, haben aber den wesentlichen Nachteil, daß sie bei ruhigem Stehen im Vorratstank leicht einen Bodensatz bilden, der unter Umständen so fest werden kann, daß er sich nicht mehr aufrühren läßt. Da es sich bei den mit kaltem Wasser angesetzten Stammlösungen, wie auch dem stärker verdünnten stärkehaltigen Spülbad, um instabile. Dispersionen handelt, sind hiermit eine Reihe von Nachteilen verbunden. So ist - will man eine Bodensatzbildung im Stammansatzbehälter vermeiden - ständiges Rühren notwendig. Trotzdem kann es in Leitungen und an Ventilen bei längerem Stillstand der Anlage gelegentlich zu Verstopfungen kommen. Weiterhin können Dosierpumpen mit der Zeit undicht und die Pumpengehäuse durch erhöhten Abrieb geschädigt werden. Schließlich kann sich in den Ablaufwannen unter den Entwässerungspressen oder Zentrifugen die im Spülwasser enthaltene Stärke ansammeln. Da es sich bei der Stärke um einen hervorragenden Nährboden für Bakterien handelt, führt dies zu hygienischen Problemen.The starch-based textile stiffeners usually used in commercial laundries can be distributed well in cold water when producing a master batch, but have the major disadvantage that they easily form a sediment when standing still in the storage tank, which can possibly become so firm that he can no longer be stirred. Since the stock solutions prepared with cold water, as well as the more dilute starch-containing rinsing bath, are unstable. Dispersions, there are a number of disadvantages. So - if you want to avoid sediment formation in the stock container - constant stirring is necessary. Nevertheless, blockages can occasionally occur in lines and on valves when the system is idle for a long time. Furthermore, metering pumps can leak over time and the pump housing can be damaged by increased abrasion. Eventually it can get in the flow troughs under the dewatering presses or centrifuges to collect the starch contained in the rinse water. Since starch is an excellent breeding ground for bacteria, this leads to hygienic problems.
Es besteht daher Interesse an einem Produkt, das diese Schwierigkeiten vermeidet und die Möglichkeit bietet, stabile Vorratslösungen bzw. Stammansätze zu bereiten. Wegen der speziellen Gegebenheiten in gewerblichen Betrieben soll dieses Steifemittel darüber hinaus noch eine Reihe weiterer Anforderungen erfüllen. So muß sich das Steifemittel in kaltem Wasser beliebigen Härtegrades, insbesondere aber auch in enthärtetem Wasser, ansetzen lassen, zumal in Wäschereibetrieben üblicherweise mit enthärtetem Wasser gearbeitet wird. Da üblicherweise nur ein Stärkestammansatzbehälter zur Verfügung steht, muß die Lösezeit des Steifemittels sehr kurz sein. Auch bei geringer Leistungsfähigkeit vorhandener Rührwerke muß sich das Steifemittel ohne Klumpenbildung verteilen lassen. Die angesetzte Stammlösung darf keine harten Partikel enthalten, damit ein übermäßiger Verschleiß der Pumpen vermieden wird. Das Steifemittel muß sich zu einem Stammansatz mit einer Konzentration von mindestens 2 % ansetzen lassen. Schließlich darf es auch beim Zusammentreffen der abgepumpten bzw. abgeschleuderten Restlösung mit dem Spülwasser nicht zu Ausfällungen kommen, um Stärkeansammlungen im Bereich der Schleudern und Entwässerungspressen und damit hygienische Probleme zu vermeiden. Diese Aufgabenstellung wird durch die nachfolgend beschriebene Erfindung gelöst.There is therefore interest in a product that avoids these difficulties and offers the possibility of preparing stable stock solutions or master batches. Due to the special conditions in commercial companies, this stiffening agent should also meet a number of other requirements. For example, the stiffening agent must be able to be prepared in cold water of any degree of hardness, but especially also in softened water, especially since softeners usually work with softened water. Since usually only one starch batch container is available, the dissolving time of the stiffening agent must be very short. Even when the agitators are inefficient, the stiffening agent must be able to be distributed without lump formation. The prepared stock solution must not contain any hard particles in order to avoid excessive wear on the pumps. The stiffening agent must be able to form a base with a concentration of at least 2%. After all, there must also be no precipitation when the pumped-off or spun-off residual solution meets the rinse water in order to avoid starch accumulation in the area of the centrifuging and dewatering presses and thus hygienic problems. This problem is solved by the invention described below.
Gegenstand der Erfindung ist ein Verfahren zur Herstellung lagerbeständiger, wäßriger Textilsteifen unter Verwendung von Stärkephosphorsäure-teilestern und deren Salzen, dadurch gekennzeichnet, daß man zur Verbesserung der Quellfähigkeit des pulverigen Stärkeesters in kalten Wasser den Quellvorgang in Gegenwart eines wasserlöslichen Calciumsalzes entsprechend einer Menge von 0,01 g bis 0,5 g, vorzugsweise 0,02 g bis 0,2 g Ca++-Ionen pro 100 g Stärkeester durchführt.The invention relates to a process for the preparation of storage-stable, aqueous textile strips using starch phosphoric acid partial esters and their salts, characterized in that to improve the swellability of the powdery starch ester in cold water, the swelling process in the presence of a water-soluble calcium salt corresponding to an amount of 0. 01 g to 0.5 g, preferably 0.02 g to 0.2 g Ca ++ ions per 100 g starch ester.
Stärkephosphorsäure-teilester sind bekannt. Ihre Herstellung erfolgt durch Umsetzung nativer Stärke, wie Mais-, Reis- oder Kornstärke, mit Phosphorsäure bzw. deren reaktionsfähigen Derivaten in Gegenwart säurebindender Verbindungen bei Temperaturen zwischen 120° und 170 °C. Dabei erfolgt neben der Veresterungsreaktion noch eine teilweise Depolymerisation der Stärke. Die Veresterungsprodukte werden u.a. als Schlichte- und Steifungsmittel für Textilien eingesetzt.Starch phosphoric acid partial esters are known. They are produced by reacting native starch, such as corn, rice or grain starch, with phosphoric acid or its reactive derivatives in the presence of acid-binding compounds at temperatures between 120 ° and 170 ° C. In addition to the esterification reaction, there is also a partial depolymerization of the starch. The esterification products are i.a. used as a sizing and stiffening agent for textiles.
Das Ansetzen wäßriger Steifelösungen unter Verwendung von Phosphatstärken kann jedoch zu erheblichen Schwierigkeiten durch Bildung von Klumpen und unlöslichen Rückständen führen, was insbesondere in Wäschereibetrieben zu den bereits genannten Schwierigkeiten führen kann, insbesondere dann, wenn die Steifelösungen für einen größeren bzw. kontinuierlichen Bedarf angesetzt und über einen längeren Zeitraum bevorratet werden. Diese Schwierigkeiten werden erfindungsgemäß vermieden, wenn man den Quell- und Lösungsprozeß in Gegenwart von Calciumionen durchführt, die zuvor dem Ansatzwasser, vorzugsweise jedoch dem Stärkephosphorsäureester in Form wasserlöslicher Calciumsalze zugesetzt wurden. Geeignete Calciumsalze sind z.B. Calcinmchlorid, Calciumnitrat, Calciumhydrogenphosphat, Calciumacetat, Calciumgluconat oder Calciumlactat. Die Menge dieser Salze ist so zu bemessen, daß 0,01 bis 0,5 g, vorzugsweise 0,02 bis 0,2 g Cä++-Ionen auf 100 g Stärkephosphorsäure-teilester entfallen.The preparation of aqueous stiffness solutions using phosphate starches can, however, lead to considerable difficulties due to the formation of lumps and insoluble residues, which can lead to the difficulties already mentioned, particularly in laundries, in particular if the stiffness solutions are used for a larger or continuous need and above a longer one Period. According to the invention, these difficulties are avoided if the swelling and dissolving process are carried out in the presence of calcium ions which have previously been added to the preparation water, but preferably to the starch phosphoric acid ester in the form of water-soluble calcium salts. Suitable calcium salts are, for example, calcine chloride, calcium nitrate, calcium hydrogen phosphate, calcium acetate, calcium gluconate or calcium lactate. The amount of these salts is to be measured so that 0.01 to 0.5 g, preferably 0.02 to 0.2 g Ca ++ ions are accounted for per 100 g starch phosphoric acid partial ester.
Das Vermischen der Calciumsalze mit den Stärkephosphorsäure-teilestern kann in jeder geeigneten Weise erfolgen, beispielsweise indem man die Stärkeester mit einer wäßrigen Calciumsalzlösung tränkt oder besprüht oder mit einem Calciunsalz pudert und ggf. anschließend nachtrocknet.The calcium salts can be mixed with the starch phosphoric acid partial esters in any suitable manner, for example by soaking or spraying the starch esters with an aqueous calcium salt solution or powdering them with a calcium salt and, if appropriate, subsequently drying them.
Ein besonders gutes Quell- und Lösungsvermögen besitzen solche Stärkeester, die zusätzlich Harnstoff in Mengen von 2 bis 25 g, vorzugsweise 5 bis 20 g, bezogen auf 100 g Stärkeester, enthalten. Das Einbringen des Harnstoffs kann mit üblichen Misch- und Knetvorrichtungen vor, während oder nach der Phosphatierungsreaktion erfolgen.Starch esters which additionally contain urea in amounts of 2 to 25 g, preferably 5 to 20 g, based on 100 g of starch ester, have a particularly good swelling and dissolving capacity. The urea can be introduced using conventional mixing and kneading devices before, during or after the phosphating reaction.
Als gut geeignet haben sich solche Stärkephosphorsäure-teilester erwiesen, deren PO4-Gehalt 2 bis 12, vorzugsweise 4 bis 8 g pro 100 g Stärke beträgt. Die Teilester kommen zweckmäßigerweise als Salze des Natriums, Kaliums, Ammoniums oder organischer Ammoniumbasen zur Anwendung. Geeignete organische Ammoniumbasen sind z.B. Mono-, Di-oder Trialkanolamine, die sich von Ethanol, Propanol oder i-Propanol ableiten, ferner Guanidin und Morpholin. Bevorzugte Salze sind die Phosphorteilestersalze des Natriums und Ammoniums.Those starch phosphoric acid esters whose PO 4 content is 2 to 12, preferably 4 to 8 g per 100 g of starch have proven to be very suitable. The partial esters expediently come as salts of sodium, potassium, Ammonium or organic ammonium bases for use. Suitable organic ammonium bases are, for example, mono-, di- or trialkanolamines which are derived from ethanol, propanol or i-propanol, and also guanidine and morpholine. Preferred salts are the partial phosphorus ester salts of sodium and ammonium.
Die Stärkephosphorsäure-teilester bzw. deren Salze können zusammen mit den Calciumsalzen und dem vorzugsweise als Mischungsbestandteil vorliegenden Harnstoff ohne weitere Zusatzstoffe zum Ansetzen der wäßrigen Textilsteife bzw. einer Stammlösung verwendet werden, wobei der Gehalt dieser Lösung 2 g bis 50 g, vorzugsweise 3 g bis 30 g pro Liter betragen kann. Es können aber auch Gemische der Stärkephosphorsäure-teilester bzw. deren Salze mit anderen bekannten wasserlöslichen bzw. in Wasser quellbaren Polymeren, die steifende bzw. appretierende Eigenschaften besitzen, zur Herstellung der Steife- bzw. Stammlösungen verwendet werden. Geeignet sind z.B. lösliche Stärke, ferner Stärkeether, wie Methyl-, Hydroxyethyl- und Hydroxypropylstärke oder Stärkeester, wie Carboxymethylstärke. Auch Mischether und -ester, die verschiedene Ether- und/oder Estergruppierungen enthalten, sind geeignet. Der Anteil dieser zusätzlichen Hochpolymeren bzw. i Stärke und Stärkederivate soll 50 Gew.-% des Gemisches nicht übersteigen.The starch phosphoric acid partial esters or their salts can be used together with the calcium salts and the urea, which is preferably present as a constituent of the mixture, without further additives for preparing the aqueous textile stiffness or a stock solution, the content of this solution being 2 g to 50 g, preferably 3 g to Can be 30 g per liter. However, mixtures of the starch phosphoric acid partial esters or their salts with other known water-soluble or water-swellable polymers which have stiffening or finishing properties can also be used to prepare the stiff or stock solutions. Suitable are e.g. soluble starch, also starch ethers, such as methyl, hydroxyethyl and hydroxypropyl starch or starch esters, such as carboxymethyl starch. Mixed ethers and esters containing different ether and / or ester groups are also suitable. The proportion of these additional high polymers or starch and starch derivatives should not exceed 50% by weight of the mixture.
Die Steifungsmittel bzw. deren wäßrige Ansätze können zusätzlich in Mengen bis zu 2 Gew.-%, vorzugsweise bis zu ) 1 %, bezogen auf Stärkeester, an Glättungs- und Bügelhilfsmitteln enthalten, wie Silikone, Polyoxyethylenwachse oder Borax.The stiffening agents or their aqueous batches can additionally contain amounts of up to 2% by weight, preferably up to 1%, based on starch esters, of smoothing and ironing aids, such as silicones, polyoxyethylene waxes or borax.
Weiterhin können übliche Konservierungsmittel, wie Formaldehyd, Glyoxal, Bromnitroalkohole, Tributylzinnbenzoat, Pyridinthionsalze, halogenierte Carbanilide, halogenierte Salicylanilide, substituierte Diphenyldichlormethane und Halogenphenole, ferner optische Aufheller, Duftstoffe und Zusätze, die eine bleichende Wirkung auf die Stärkeester ausüben, wie Natrium- oder Kaliumpyrosulfit, anwesend sein.Furthermore, conventional preservatives, such as formaldehyde, glyoxal, bromonitroalcohols, tributyltin benzoate, pyridine thione salts, halogenated carbanilides, halogenated salicylanilides, substituted diphenyldichloromethanes and halogenophenols, furthermore optical brighteners, fragrances and additives which exert a bleaching action on the sodium sulfite potassium ester or potassium sulfite, to be present.
Ein Gemisch aus 86,2 Gewichtsteilen eines getrockneten, pulverigen Stärkephosphorsäure-teilesters in Form des Ammoniumsalzes (PO -Gehalt 5,5 g/100 g Stärke) und 8,1 Gewichtsteile Harnstoff wurden zwecks Aufhellung des gelblich gefärbten Stärkeesters zunächst in einem Mischer mit einer Lösung von 1,53 Natriumpyrosulfit in 2,9 Gewichtsteilen deionisiertem Wasser besprüht. Nach einer Mischzeit von 2 Minuten wurden in der gleichen Weise 0,11 Gewichtsteile Calciumchlorid in 1,16 Gewichtsteilen deionisiertem Wasser aufgesprüht und anschließend noch 5 Minuten nachgemischt. Es wurde ein gut rieselfähiges Pulver erhalten, das nach Absieben geringer Mengen an Grobkorn (über 1 mm Korngröße) unmittelbar weiterverwendet bzw. abgefüllt werden konnte.A mixture of 86.2 parts by weight of a dried, powdery starch phosphoric acid partial ester in the form of the ammonium salt (PO content 5.5 g / 100 g starch) and 8.1 parts by weight of urea were initially mixed in a mixer with a to lighten the yellowish colored starch ester Sprayed solution of 1.53 sodium pyrosulfite in 2.9 parts by weight of deionized water. After a mixing time of 2 minutes, 0.11 parts by weight of calcium chloride in 1.16 parts by weight of deionized water were sprayed on in the same way and then mixed for a further 5 minutes. A free-flowing powder was obtained which, after sieving off small amounts of coarse grain (over 1 mm grain size), could be used immediately or filled.
Eine Probe von 5 g des Produktes löste sich in 100 ml entsalztem Wasser von 20 °C bei leichtem Umrühren mit einen Glasstab innerhalb weniger als 2 Minuten rückstandsfrei auf. Eine Vergleichsprobe, die in gleicher Weise, jedoch ohne Zusatz an Calciumsalz behandelt worden war, neigte zum Zusammenballen und war nach 5 Minuten noch nicht vollständig gelöst.A sample of 5 g of the product dissolved in 100 ml of demineralized water at 20 ° C with gentle stirring with a glass rod within less than 2 minutes. A comparative sample which had been treated in the same way, but without the addition of calcium salt, tended to agglomerate and was still not completely dissolved after 5 minutes.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3126844 | 1981-07-08 | ||
| DE19813126844 DE3126844A1 (en) | 1981-07-08 | 1981-07-08 | "METHOD AND MEANS FOR THE PRODUCTION OF STABLE AQUEOUS TEXTILE STRIPS" |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0069333A2 true EP0069333A2 (en) | 1983-01-12 |
| EP0069333A3 EP0069333A3 (en) | 1986-01-08 |
Family
ID=6136349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82105810A Withdrawn EP0069333A3 (en) | 1981-07-08 | 1982-06-30 | Process and means for the preparation of stable aqueous textile stiffeners |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0069333A3 (en) |
| DE (1) | DE3126844A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3821778A1 (en) * | 1988-06-28 | 1990-02-08 | Rotta Gmbh & Co Dr | Sizing agent |
| WO2007118338A1 (en) * | 2006-04-19 | 2007-10-25 | Emmi Ag | Milk serum supplemented aqueous solutions |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2426404A1 (en) * | 1974-05-31 | 1975-12-11 | Benckiser Knapsack Gmbh | Easily removable sizing agents for staple fibres - contg. phosphated starch and water-soluble vinyl polymer |
| DE3007796A1 (en) * | 1980-02-29 | 1981-09-10 | Hoffmann's Stärkefabriken AG, 4902 Bad Salzuflen | Whitening synthetic or mixed fibre fabric - esp. polyester or polyacrylonitrile curtain by coating with binder and pigment from aq. liquor contg. electrolyte |
-
1981
- 1981-07-08 DE DE19813126844 patent/DE3126844A1/en not_active Withdrawn
-
1982
- 1982-06-30 EP EP82105810A patent/EP0069333A3/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2426404A1 (en) * | 1974-05-31 | 1975-12-11 | Benckiser Knapsack Gmbh | Easily removable sizing agents for staple fibres - contg. phosphated starch and water-soluble vinyl polymer |
| DE3007796A1 (en) * | 1980-02-29 | 1981-09-10 | Hoffmann's Stärkefabriken AG, 4902 Bad Salzuflen | Whitening synthetic or mixed fibre fabric - esp. polyester or polyacrylonitrile curtain by coating with binder and pigment from aq. liquor contg. electrolyte |
Non-Patent Citations (1)
| Title |
|---|
| TEXTIL PRAXIS, Band 26, Nr. 2, Dezember 1971, Seiten 756-759, H. JÖRDER et al.: "Über die wechselwirkung hochmolekularer Substanzen mit hydrotropen Mitteln bei Lösungs- und Quellungsvorgängen in der Veredlung" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3821778A1 (en) * | 1988-06-28 | 1990-02-08 | Rotta Gmbh & Co Dr | Sizing agent |
| WO2007118338A1 (en) * | 2006-04-19 | 2007-10-25 | Emmi Ag | Milk serum supplemented aqueous solutions |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0069333A3 (en) | 1986-01-08 |
| DE3126844A1 (en) | 1983-01-27 |
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