DE1469351C3 - Process for strengthening nonwovens - Google Patents
Process for strengthening nonwovensInfo
- Publication number
- DE1469351C3 DE1469351C3 DE19641469351 DE1469351A DE1469351C3 DE 1469351 C3 DE1469351 C3 DE 1469351C3 DE 19641469351 DE19641469351 DE 19641469351 DE 1469351 A DE1469351 A DE 1469351A DE 1469351 C3 DE1469351 C3 DE 1469351C3
- Authority
- DE
- Germany
- Prior art keywords
- vinyl
- diisocyanate
- polymers
- nonwovens
- reaction products
- 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.)
- Expired
Links
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/645—Impregnation followed by a solidification process
-
- 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
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
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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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
- D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene
-
- 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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/248—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing chlorine
-
- 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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/285—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides
-
- 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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/31—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated nitriles
-
- 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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- 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
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
- Polyurethanes Or Polyureas (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
Die Herstellung der Isocyanatgruppen besitzenden Umsetzungsprodukte kann in an sich bekannter Weise erfolgen, indem man die mindestens zwei Hydroxylgruppen tragenden Verbindungen mit einem auf den Hydroxylgehalt berechneten stöchiometrischen Überschuß an Polyisocyanaten bei erhöhten Temperaturen umsetzt.The reaction products containing isocyanate groups can be prepared in a manner known per se take place by the at least two hydroxyl groups bearing compounds with one on the Hydroxyl content calculated stoichiometric excess reacts on polyisocyanates at elevated temperatures.
Die Behandlung der Vliese mit den erfindungsgemäß in Betracht kommenden Flotten erfolgt nach ,den bekannten Verfestigungsmethoden:The treatment of the nonwovens with the liquors which can be considered according to the invention is carried out according to the known consolidation methods:
Das Bindemittel wird beispielsweise in Form einer wäßrigen Flotte oder eines Schaumes aus dieser Flotte appliziert. Der Anteil des Bindemittels an dem Gesamtgewicht der wäßrigen Flotte kann naturgemäß in weiten Grenzen schwanken. Er beträgt im allgemeinen etwa 5 bis 70°/() und liegt vorteilhafterweise bei etwa 25 bis 50°/0 des Gewichts der wäßrigen Flotte. Das Verhältnis der beiden Bindemittel a) und b) untereinander kann gleichfalls stark variieren und liegt beispielsweise für das Verhältnis a: b im Bereich von L : 4 bis 4:1.The binder is applied, for example, in the form of an aqueous liquor or a foam from this liquor. The proportion of the binder in the total weight of the aqueous liquor can of course vary within wide limits. It is generally from about 5 to 70 ° / (), and is advantageously from about 25 to 50 ° / 0 by weight of the aqueous liquor. The ratio of the two binders a) and b) to one another can likewise vary widely and is, for example, for the ratio a: b in the range from L: 4 to 4: 1.
Nach der Imprägnierung wird die überschüssige Flotte bzw. der Schaum abgequetscht (der Abquetscheffekt liegt beispielsweise bei 5 bis 100°/0 Binderaufnahme) und das Vlies einem Trockner zugeführt. Außerdem kann mit den erwähnten Flotten eine Oberflächenverfestigung des Vlieses durch Aufsprühen, Pflatschen oder Aufrakeln der verdickten Flotte oder eines Binderschaumes erzielt werden. Eine Hitzebehandiung nach der Trocknung, wie sie üblicherweiseAfter the impregnation, the excess liquor or foam is squeezed off (the squeezing effect is, for example, 5 to 100 ° / 0 binder uptake) and the fleece is fed to a dryer. In addition, the liquors mentioned can be used to strengthen the surface of the fleece by spraying, patting or knife-coating on the thickened liquor or a binder foam. A post-drying heat treatment as is customary
beim Verfestigen von Vliesen unter Zusatz der bekannten vernetzbaren Bindemittel erforderlich ist, kann im vorliegenden Fall unterbleiben.is required when consolidating nonwovens with the addition of the known crosslinkable binders, can be omitted in the present case.
Nach dem erfindungsgemäßen Verfahren lassen sich Vliese aus verschiedenartigsten Fasern natürlicher oder synthetischer Herkunft, beispielsweise aus Baumwolle, regenerierter Cellulose, Celluloseestern, Wolle, regenerierten Proteinen, Polyacrylnitril, Polyamiden, Polyurethanen, Polyestern, Polyolefinen, Polyvinylchlorid, Polyvinylalkohol und Polycarbonaten, zu Vliesstoffen verfestigen.According to the method according to the invention, nonwovens made from a wide variety of fibers can be made more natural or of synthetic origin, for example from cotton, regenerated cellulose, cellulose esters, wool, regenerated proteins, polyacrylonitrile, polyamides, polyurethanes, polyesters, polyolefins, polyvinyl chloride, Polyvinyl alcohol and polycarbonates solidify into nonwovens.
Die mechanischen Eigenschaften der erhaltenen Vliesstoffe sind sehr gut, der Griff variiert je nach der Zusammensetzung der Binderflotten von weich bis hart. Die Gebrauchstüchtigkeit der Vliesstoffe wird durch Naß- oder Trockenreinigung nicht beeinflußt.The mechanical properties of the obtained nonwovens are very good, the handle varies depending on the Composition of the binder liquor from soft to hard. The serviceability of the nonwovens becomes not influenced by wet or dry cleaning.
Unter dem Begriff »Vlies« sind hier aus losen Fasern bestehende Ein- oder Mehrlagenflore zu verstehen, in denen die Fasern in Vorzugsrichtungen oder aber auch ohne Vorzugsrichtungen angeordnet sind; ferner gehören hierzu Ein- oder Mehrlagenflore, die vorverfestigt oder vernadelt sind, sowie Vliese, die mit Hilfe der Näh- oder Nähwirktechnik bereits einen gewissen Zusammenhalt erfahren haben. Die Vliese können gewünschtenfalls auch mit anderen Flächengebilden z. B., mit Geweben, Gewirken oder Schaumstoffen verbunden sein.The term "fleece" here refers to loose fibers to understand existing single or multi-layer pile, in which the fibers in preferred directions or else are also arranged without preferred directions; this also includes single or multi-layer piles that are pre-consolidated or needled, as well as nonwovens that have already been sewn with the help of sewing or stitchbonding technology have experienced a certain cohesion. If desired, the nonwovens can also be made with other flat structures z. B., be connected to fabrics, knitted fabrics or foams.
Es ist bereits bekannt, zur Verfestigung von Vliesen wäßrige Dispersionen zu verwenden, die Styrol-Butadien-Mischpolymerisate und Isocyanatgruppen besitzende Umsetzungsprodukte, welche aus mindestens zwei Hydroxylgruppen tragenden Verbindungen ■ und Polyisocyanaten hergestellt sind, enthalten. Vor den auf diese Weise verfestigten Vliesen zeichnen sich die erfindungsgemäß verfestigten Vliese durch eine höhere Reißfestigkeit aus.It is already known to use aqueous dispersions, the styrene-butadiene copolymers, for consolidating nonwovens and reaction products having isocyanate groups and consisting of at least two hydroxyl group-bearing compounds ■ and polyisocyanates are made. In front the nonwovens consolidated in this way, the nonwovens consolidated according to the invention are characterized by a higher tear strength.
Gegenstand eines älteren Patentes (deutsche Patentschrift 1265113) ist bereits ein Verfahren zur Veredelung von Textilmaterialien, insbesondere Geweben, durch Behandlung mit wäßrigen Flotten der auch erfindungsgemäß eingesetzten Art. Die Verfestigung von Vliesen ist jedoch nicht Gegenstand dieses älteren Patentes, denn unverfestigte Vliese können nicht als Textilmaterial im üblichen Sinne angesehen werden.The subject of an older patent (German patent specification 1265113) is already a method for Refinement of textile materials, especially fabrics, by treatment with aqueous liquors also used according to the invention. The consolidation of nonwovens is not the subject of this older patent, because unconsolidated nonwovens cannot be regarded as textile material in the usual sense will.
In einer älteren deutschen Anmeldung (vgl. deutsche Offenlegungsschrift 1 594 279) ist bereits ein Bindemittel für die Herstellung von nichtgewebten Materialien auf Fasergrundlage auf der Basis von wäßrigen carboxylgruppenhaltige Stoffe enthaltenden Dispersionen vorgeschlagen worden, welches neben Carboxylgruppen aufweisenden Polymeren blockierte polyfunktionelle Isocyanate enthält. Die in der vorliegenden Erfindung vorgeschlagenen Bindemittel enthalten im Gegensatz hierzu keine blockierten polyfunktionellen Isocyanate, sondern Isocyanatgruppen enthaltende Umsetzungsprodukte aus Polyhydroxylverbindungen und Polyisocyanaten.In an older German application (cf. German Offenlegungsschrift 1 594 279) there is already a binder for the manufacture of nonwoven fiber-based materials on the basis of aqueous Carboxyl group-containing dispersions have been proposed which, in addition to carboxyl groups containing polymers containing blocked polyfunctional isocyanates. The in the present In contrast to this, the binders proposed in the invention do not contain any blocked polyfunctional ones Isocyanates, but rather isocyanate group-containing reaction products of polyhydroxyl compounds and polyisocyanates.
In den folgenden Beispielen stehen, falls nichts anderes angegeben, Teile für Gewichtsteile.In the following examples, if nothing otherwise stated, parts by parts by weight.
B e i s ρ i e 1 1B e i s ρ i e 1 1
Ein Faservlies aus Kupferoxydammoniak-Cellulose wird mit einer wäßrigen Flotte behandelt, die im Liter 400 g einer 40%igen wäßrigen Dispersion eines Mischpolymerisats aus 10 Teilen Butadien, 10 Teilen Styrol, 5 Teilen Acrylamid und 75 Teilen Acrylsäurebutylester sowie 600 g der nachstehend beschriebenen Emulsion eines Isocyanat-Vorpolymerisates enthält. Nach der Imprägnierung wird das Vlies auf einen Flottengehalt von etwa 120% abgequetscht. Danach wird bei 80 bis 110° C getrocknet. Das erhaltene Vlies hat einen angenehm weichen Griff und eine Reißfestigkeit von 52 kg/cm2 bei 19 % Dehnung.A fiber fleece made of copper oxide ammonia cellulose is treated with an aqueous liquor containing 400 g of a 40% strength aqueous dispersion of a copolymer of 10 parts of butadiene, 10 parts of styrene, 5 parts of acrylamide and 75 parts of butyl acrylate and 600 g of the emulsion described below Contains isocyanate prepolymer. After impregnation, the fleece is squeezed off to a liquor content of around 120%. It is then dried at 80 to 110 ° C. The fleece obtained has a pleasantly soft handle and a tear strength of 52 kg / cm 2 at 19% elongation.
Die obenerwähnte Emulsion des Isocyanatvorpolymerisats wurde folgendermaßen bereitet:The above-mentioned emulsion of the isocyanate prepolymer was prepared as follows:
3000 g eines Polypropylenglykols, das ein Molekulargewicht von etwa 2000, eine OH-Zahl von 55,5 und eine Säurezahl <0,5 aufweist, werden mit 535 g Hexamethylendiisocyanat 2 Stunden auf 110° C und anschließend noch IV2 Stunden auf 130 bis 140°C erhitzt. Aus 300 g des erhaltenen Umsetzungsproduktes, dessen Gehalt an freien Isocyanatgruppen 3,9 Gewichtsprozent beträgt, wird dann zusammen mit 100 g Äthylacetat und 600 g Wasser unter Zusatz von 5 g Laurylsulfat eine Emulsion bereitet.3000 g of a polypropylene glycol having a molecular weight of about 2000, an OH number of 55.5 and an acid number <0.5, are 535 g Hexamethylene diisocyanate at 110 ° C for 2 hours and then at 130 to 140 ° C for another IV2 hours heated. From 300 g of the reaction product obtained, its content of free isocyanate groups 3.9 percent by weight is then added together with 100 g of ethyl acetate and 600 g of water of 5 g of lauryl sulfate prepares an emulsion.
Ein Faservlies aus Kupferoxydammoniak-Cellulose wird mit einer wäßrigen Flotte behandelt, die im Liter 400 g einer 40%igen wäßrigen Dispersion eines Mischpolymerisates aus 95 Teilen Acrylsäureäthylester und 5 Teilen Acrylamid sowie 600 g der im Beispiel 1 beschriebenen Emulsion enthält. Die Verfestigung erfolgt auf gleiche Weise wie in Beispiel 1. Das erhaltene Vlies hat bei gutem Stand einen relativ weichen Griff und eine Reißfestigkeit von 50 kg/cm2 bei 22% Reißdehnung.A fiber fleece made of copper oxide ammonia cellulose is treated with an aqueous liquor which contains 400 g per liter of a 40% strength aqueous dispersion of a copolymer of 95 parts of ethyl acrylate and 5 parts of acrylamide and 600 g of the emulsion described in Example 1. The consolidation takes place in the same way as in Example 1. The nonwoven obtained has a relatively soft handle when it is in good condition and a tear strength of 50 kg / cm 2 at 22% elongation at break.
B e i s pi e1 3E xample 1 3
In dem Verfahren des Beispiels 1 kann man mit gleichem oder ähnlichem Ergebnis auch folgende Binder-Komponenten einsetzen:In the procedure of Example 1, the following can also be used with the same or a similar result Use binder components:
a) wäßrige Polymerisatdispersionen aus:a) aqueous polymer dispersions from:
I. 85 Teilen Acrylsäurebutylester 10 Teilen Butadien
5 Teilen Methacrylamid
Feststoffgehalt: 42%I. 85 parts of butyl acrylate, 10 parts of butadiene
5 parts of methacrylamide
Solid content: 42%
II. 80 Teilen Acrylsäurebutylester 15 Teilen AcrylnitrilII. 80 parts of butyl acrylate, 15 parts of acrylonitrile
5 Teilen Acrylamid
Feststoff gehalt: 40%5 parts of acrylamide
Solid content: 40%
III. 25 Teilen Acrylsäurebutylester 48 Teilen VinylidenchloridIII. 25 parts of butyl acrylate, 48 parts of vinylidene chloride
20 Teilen Styrol20 parts of styrene
6 Teilen Acrylamid
1 Teil Acrylsäure6 parts of acrylamide
1 part acrylic acid
Feststoff gehalt: 38%Solid content: 38%
IV. 60 Teilen Acrylsäurebutylester 35 Teilen StyrolIV. 60 parts of butyl acrylate and 35 parts of styrene
5 Teilen Acrylamid
Feststoff gehalt: 40%5 parts of acrylamide
Solid content: 40%
V. 15 Teilen Acrylnitril
78 Teilen ButadienV. 15 parts of acrylonitrile
78 parts of butadiene
4 Teilen Methacrylsäure
3 Teilen Acrylamid4 parts of methacrylic acid
3 parts of acrylamide
Feststoff gehalt: 38%Solid content: 38%
VI. 95 Teilen AcrylsäureäthylesterVI. 95 parts of ethyl acrylate
5 Teilen Acrylamid
Feststoff gehalt: 40%5 parts of acrylamide
Solid content: 40%
b) Isocyanätvorpolymerisate aus: (OHZ = OH-Zahl. SZ = Säurezahl)b) Isocyanate prepolymers made from: (OHZ = OH number. SZ = acid number)
«) verzweigtem Polypropylenglykol (OHZ 56; Molgewicht 3000) und einem Isomerengemisch aus , 65% Toluylendiisocyanat-(2,4) und 35% ToIuylendiisocyanat-(2,6), NCO-Gehalt des Vorpolymerisats 4,07%;«) Branched polypropylene glycol (OHN 56; molecular weight 3000) and an isomer mixture of 65% toluene diisocyanate (2.4) and 35% toluene diisocyanate (2.6), NCO content of the prepolymer 4.07%;
/S) linearem Polypropylenglykol (OHZ 108,5; Molgewicht etwa 1000) und Hexamethylendiisocyanat, xo NCO-Gehalt des Vorpolymerisats 5,6 %;/ S) linear polypropylene glycol (OHN 108.5; molecular weight about 1000) and hexamethylene diisocyanate, xo NCO content of the prepolymer 5.6%;
γ) linearem Polyester, hergestellt aus Adipinsäure und Diäthylenglykol (OHZ 42,3; SZ 1,7) und Hexamethylendiisocyanat, NCO-Gehalt des Vorpolymerisats 3,7%; γ) linear polyester, produced from adipic acid and diethylene glycol (OHN 42.3; SZ 1.7) and hexamethylene diisocyanate, NCO content of the prepolymer 3.7%;
δ) linearem ,Polyäthylenoxid (OHZ 132; Molgewicht 850) und^Hexamethylendiisocyanat, NCO-Gehalt des Vorpolymerisats 7,2%. δ) linear, polyethylene oxide (OHZ 132; molecular weight 850) and ^ hexamethylene diisocyanate, NCO content of the prepolymer 7.2%.
In der folgenden Tabelle sind die Ergebnisse auf verschiedenen Vliesarten zusammengestellt:The following table shows the results on different types of nonwoven:
aSubstance [g /
a
bI solid]
b
niak-CelluloseCopper oxide ammonium
niak cellulose
geringer Dehnunghard, inelastic fleece with good strength and
low elongation
Reißfestigkeit und hervorragender Naßfestigkeitrelatively hard, inelastic fleece with extremely good
Tear resistance and excellent wet strength
niak-CelluloseCopper oxide ammonium
niak cellulose
trockenem Griffrelatively hard, inelastic fleece with especially
dry grip
hervorragender Reißfestigkeitinelastic fleece of low elongation and
excellent tear resistance
phthalatPolyethylene tere-
phthalate
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0043830 | 1964-08-27 | ||
DEF0046552 | 1965-07-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1469351A1 DE1469351A1 (en) | 1969-02-06 |
DE1469351C3 true DE1469351C3 (en) | 1974-03-21 |
Family
ID=25976436
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19641469351 Expired DE1469351C3 (en) | 1964-08-27 | 1964-08-27 | Process for strengthening nonwovens |
DE19651469369 Granted DE1469369A1 (en) | 1964-08-27 | 1965-07-08 | Process for strengthening nonwovens |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651469369 Granted DE1469369A1 (en) | 1964-08-27 | 1965-07-08 | Process for strengthening nonwovens |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE668641A (en) |
CH (2) | CH496129A (en) |
DE (2) | DE1469351C3 (en) |
GB (1) | GB1100240A (en) |
NL (1) | NL6511172A (en) |
SE (1) | SE310350B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8722973D0 (en) * | 1987-09-30 | 1987-11-04 | Ici America Inc | Aqueous polymer compositions |
-
1964
- 1964-08-27 DE DE19641469351 patent/DE1469351C3/en not_active Expired
-
1965
- 1965-07-08 DE DE19651469369 patent/DE1469369A1/en active Granted
- 1965-08-23 BE BE668641D patent/BE668641A/xx unknown
- 1965-08-26 GB GB3669965A patent/GB1100240A/en not_active Expired
- 1965-08-26 NL NL6511172A patent/NL6511172A/xx unknown
- 1965-08-26 CH CH1198765A patent/CH496129A/en not_active IP Right Cessation
- 1965-08-26 CH CH1198765D patent/CH1198765A4/xx unknown
- 1965-08-27 SE SE1122665A patent/SE310350B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL6511172A (en) | 1966-02-28 |
CH1198765A4 (en) | 1970-05-29 |
CH496129A (en) | 1970-09-15 |
GB1100240A (en) | 1968-01-24 |
SE310350B (en) | 1969-04-28 |
DE1469369A1 (en) | 1969-01-09 |
BE668641A (en) | 1965-12-16 |
DE1469351A1 (en) | 1969-02-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |