DE1769146A1 - Coatings for various substrates - Google Patents

Description

PATENT REQUEST DIPL. TNG. AMTHOR 1 7 6 9 H 6

FBANEFUBT AM MATN
/ Patent attorney
Dipl.-Ing. wolf
6 Frankfurt a. At

(0611) 552028 κπτΜί, ιηκ is

ι »« * 10,000 m / m

• WJUJKMMJJWfT / UAX * 1 ·

HO GOEPOR A TION l6l7 Pennsylvania Boulevard, Philadelphia, Pa./USA

prefer trains for rerachied substrates

The invention relates to covers for different substrates and the coated assemblies obtained, and in particular such hoists as they τοη microcrystalline »synthetic, linear polyamides, ie they are derived from U.S. Patent 3,299,011.

Synthetic, linear polyamides with sufficiently high molecular weights, in order to enable a conversion into self-supporting threads, they are characterized by the fact that they have a crystalline amorphous morphological structure. As in the one above cited patent disclosed “this class can τοη polyamides a controlled reduction e.g. treatment with be subjected to a dilute aqueous mineral acid solution in order to selectively attack the amorphous areas of the polyamide. In these selective attacks, part of the amorphous product is released and part of the microcrystals The binding molecular chains are separated or sufficiently selected "so that be ', the mechanical breakdown in a liquid swelling medium »as further defined» individual microcrystals τοη the aggregated microcrystals dissolved

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The mechanical disintegration of the aggregated microcrystalline material is carried out until at least about 10% by weight thereof has a particle size of not more than 1 micron and is continued until at least about 90% by weight has a particle size of less than one micron and at least about 10 wt. J »has a particle size τοη not greater than about 0.1 micron. Be that beTorzugten decomposition Steff Ahren is a part of the "mass killed τοη size smaller than O Ol ₁ micron · exhibit The dispersed microcrystalline polyamide forms stable dispersions and gels in liquid source media ·

The fur purposes of the present invention in application coming swelling agents are bezelohnet as liquid "source media ¹ * and are liquid media which have a low swelling effect with respect to the microcrystals and know solTatisieren the surfaces of one of a micro-crystals or have a Heigung to SolTatisieren but nioht the page order or Attack and destroy crystallite in the interior of the microcrystals. Even if the polyamides are relatively insensitive to water, the microcrystalline polyamide products according to the invention are in particular those in which the entire material has a size τοη smaller than 1 micron and the particles with a Grüß tob contains less than 0.01 micron, dispersible in water to form stable dispersions and gels. Water is thus regarded as a liquid swelling medium for the purposes according to the invention iger aliphatic acids including formic acid, acetic acid, diohloroacetic acid and triohloroacetic acid

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acid, lower aliphatic alcohols, including methanol, Ethane oil and isopropanol, Geniehe from Phenol, Kreaol and Seaoroin with water, ketones such as acetone, aldehydes, never formaldehyde, acetaldehyde and other organic solvents, never portia mid and dimethylformamide.

Za AnachliL | l to the neohanic decomposition dee hydrolyzed Materials can be the product obtained, regardless of whether it a bisρerβion or gel, ground as ale soloh.ee applied or the same can be dried or grounded, or ee can eioh ale «Proving wakeful, through a separation in Iraqi (their, which has a more uniform size distribution of the particles have dried, crushed material can be, into a liquid Quellaediua by means of a MieohrfUurire, redisperse.

There is an answer to “Manufacture of the dried products” Ton Troeknungererern sur TerfUgong, and while again dispersible materials are subject to any such method can be obtained, some methods are more detrimental to the door than others · examples of drying methods include freeze drying, spray drying, drum drying, Srockean rersittels dissolution media displacement and Ofeatrookaung.

The fractionation of the crushed products can be carried out by means of such frennrer-experience will be achieved, like an aeohaaisohes Sieve, absences in water with centrifugation · TCr das dried product turn out to be very cyclone separators Bweok-like.

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Essentially, according to the invention, an arrangement or sub, strataaterial considered that on at least one Surface an adherent cover or leather sole colloidal polyamides in microcrystalline form has * The invention is based on the finding that the colloidal microcrystalline line form of the polyamides on a self-adhesive Uebersug based on rersohiedenen substrate materials τοπ stable suspensions or dispersions or Suspensions in liquid source media as soon as the Die persion on the surface of the substrate material or arrangement applied and the liquid is rerdepft or Terliquid.

The projections can normally be fixed in all ways Materials are applied, i.e. materials that are used in Tree temperatures are solid, such as stone and other mineral substances in the form of τοη fibers and made from such fibers disc-shaped products, stone work, plaster of paris and glass and other ceramic materials, metals, natural and synthetic polymers including natural polymeric, like Hol «T HoIs and other natural cellulose fibers and Products made from such fibers in Torrn τοη foils, Paper, formed in paper and pulp, cork, cotton, Hamie fiber, flax and other natural cellulose fibers », synthetic oil-based substances such as regenerated cellulose, Cellulose esters and ia Fora τοη fibers, threads, Foils and other terforater bodies · Other examples of natural polymers include proteinaceous materials in the form of τοη leather, fibers, foils, animal hair and Gelatin. Other organic polymers include methacrylates, polyesters, polyamides, polyolefins, polyrinyl

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Plastics, poly carbonate, polyurethane, natural or synthetic Elastomers and rubbers in form too fibers, not fibrous and fibrous plate-shaped structures or foils and other appropriately rerforate structures

They can be used for a wide variety of purposes depending on the lifting eye Serve clay of the substrates to which the same are applied. So the cover can be a protective cover or the coating can only be used for printing purposes or the excess can be used as a binding agent in a non-woven web or the same can serve or the same as for making clay laminates a carrier for suitable substances, such as photosensitive or Photo-sensitive particles serve or the same can serve thea the smoothness of the substrate surface on cattle.

The non-woven Iaβerbahnen, and were especially such Paths that have been made out of eynthetical fibers, can get a considerable leakage resistance by dtp In some cases, the fibers are less than a colloidal, aikrokriatallinen fore the polyamides are coated · KUralioh iat a large number of items of clothing have come onto the market, which are known ala Biumal-Bekleiduegastiloke. These Clothing accessories are made of paper, the binding fiber » or contains plastics in order to reduce their exposure to Terbeaaera and the »trooked clothing aatttok a sufficient · aeohaniaohe restlessness to τeralttein. Generally, such so-called papers, the tataäohlioh lightly woven webs represent, either Teraittelt «In ·· Paper manufacturing processa or produced by an Irookenfaaer Miaoh process

When using the colloidal lore of polyamides can be used

109842/172 »- ₆ .

Aqueous slaper "loo dee colloidal, microcrystalline polyamides" ground "ugeeeat" in every production stage of the cellulose β during paper making. The dispersion can be grounded in the "Sohla" works or fiaffinationsTorrichtong or in a corresponding arrangement (etuffbox) of the paper-making machine in chins up to 105t at the oven at the weight of the cellulose Yerfahren surttekgeftthrt "ground · Terolttele a ·· such Zuaatsea" ground the colloidal leilohen applied to the dl · taaern and later the leaf can during the · Trookaeae brought to sufficiently high temperatures, among other things a feate binding of the lasers together in eriielea · Wahlweiae can because the sheet is glued-terso-welded or panktereo-welded "earth" lndeai selected Ib AbstaadsYreceives saelnander gate-faces flee to sufficiently high teaperators "erdia ₉ to" o dl · applied polyaaid partsohen was sticky au saohea »· ο that the dl · laeern flee with each other and the whole thing is then cooled down. AXm further, optionally, the layer or Baha of the fibers can be grounded as a dispersion of the colloidal, Poljaeld microcrietal, laprigalert. In certain cases "and" was inabesoadere in the case of diocerous passport railways, the diaperone can be applied to the surface of the railroad yeraittela WalaenUberiugs-Yerfahren or sprayed on "and then after drying the surface parts" wipe the surface parts ", so that the orphans are left with some sticking, among other things * u aaohen, where there is a porous cladding for the inner bag.

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Μ «ιβ UeberzUge« lad well sub manufacture too jet paper and Suitable for oil paper. 3o can i.B. Cards made and nourished during handling by the fact that initially printed the card and then a thin layer of the microcrystalline Polyamides a.B. by means of spraying or orphans apply is applied · TTm the move to better and a stronger bond between the coating and the To achieve printed paper, the coated card is passed through calendering rollers. Satisfactory lifting pulls for this purpose need to have a bead of only 0.008 mm. The calendered coating has an excellent Adheres to the paper and is flexible, mechanically strong and withstands excessive abrasive forces and shows during no bip formation during handling · of course, conventional pigments or dyes and Recovering agents such as calcium carbonate in the dispersion dir Gels can be incorporated.

This torrn of the polyamide is not only useful as a coating agent for fibrous foils, but also forms one excellent double coating for making τοη continuous films, such as moisture-proof regenerated cellulose, which adheres unusually well to such a film and also takes moisture-proof coatings such as nitrocellulose Hoists on. In this area of application, the microcrystalline is used Polyamide membrane used as an anchoring agent.

You can apply in a conventional manner τοη hat cover, sack cover and whale cover be applied · If the same aach. a very high apparent Have viscosity, the viscosity can be reduced very quickly at higher shear values, so that dispersions,

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The stiff outside should be able to focusses, easily applied in foil form. May continue to ÖIE bia iu 80 ^e C are heated with stirring to τerrinβerη the viscosity su and an easier application au allow · Aufgrand the Satsaohe that the & ele films with very low feststoffkonsseatrationea form, the films obtained eind relatively inexpensive and thus economically in the application This is of considerable importance in all areas of application

The invention is illustrated below with the aid of a number of exemplary embodiments explained t

example 1

Ss (6/6 VyIon) staple fiber hydrolyzed polyhexamethylene adipamide 150 g for 8 hours at 72 ⁰ C in 1150ml 5J * igar Sale aqueous acid solution. After washing the hydrolyzed polyamide with water until practically all of the acid has been removed, it is crushed in a course (20 minutes) in a Hobart Ifisoher and then in a Mixmaster ¹¹ in water at 35 # solids for 7 minutes The product is run over into a fibrous, paste-like mass. 400 ml of a 90% aqueous araic acid solution of this fibrous mass are dissolved and then left to stand at room temperature over Vauht. The acidic mixture is brought to a pH of 7 with sodium hydroxide neatralized and the entire suspension is dialyzed over Vaoht.After filtration, the product retains a large amount of water and becomes susceptible to water to form a concentration of solids

Crushed gels.

109842/1728

EIOC layer of the dele is a Bakel on ice thickness too as 0.012 mm on a "9 kg Stock bond paper" spread out, since "dried on nit Vaeaerdaiipf heated TroBBeln and then hindurohgefUhrt between Kalandrierungswalsen, at a temperature too 240 ⁰ O kept flocks . Sa · coated paper retains its original shape and shows no warping. It has a glossy surface and shows excellent grease paper and oil paper adhesion. If a drop of vegetable oil is applied to the surface, there is no evidence of penetration into the coated sheet after one hour at room temperature. The surface is also waterproof and on the coated surface After 1 hour at room temperature, sprayed water shows no evidence of penetration into the sheet · The paper is flexible »has good durability and ibri« »strength.

example 2

Bs is eia 5 £ Lges del, the one described in the example 1 « Way has been made, sprayed on paper and the cover is dried on this, but over a sit steam heated drum is performed. The paper is calibrated in the manner described in Example 1. The product has properties that essentially of the product correspond to Example 1.

Example 5

Is wlta tia 5J * iges oil _{1 of} the white described in the example 1 is produced, on a surface eiae

■ “Fpsaflatte sprayed on and then a copper foil left the surface browned. Dw formed in this way · Laminated body is bit steam heated between plates

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under the application of a! Drucket gtbraoht, the ltdielioli is sufficient, ia keep the lupfer film la touch old on the coated surface, laohdea the layer body has been gttrokonet iat _f aia Druok τοβ about 7 kf / oa aod iaτοta are applied on tin · Ttaptrttur »About 240 * 0 trhita-fc · Dtr Soliiohtkorpar will be in dar Prtaat 30 Stkoadto lan« fthaltta »dtr Druok aodaaa tufgthobtn and dtr Sohlobtkkörpertr • ntftrat oad aaa lift aioh daaatlaaa aakUhlen. Dia lupf «rib lie could not be too da» Sohlolitkurptr without cutting the chipboard aiftsofen «ardaa ·

Beiaoiel A.

Sa aird a ft dried, aioht Uberso <ene _t Cellttloeefolie ukt einea Uaaarauc aoa a Polyaaiddiaparaioo, never ia lead game X teaohrieben, old a Moka Toa etna 0,012ma Ttreehea, indea a 2jti «a Ditpereioa au! The surface is raised · laugh da · Trooknen at about 105 * 0, the superior foil aodaaa awiaohen heated plates bai tiaer Xaaparator tos about 245 * 0 uad oater BeauXaohlafea aiaaa BrnoJcaa tob about 14 kf / o · fearaoht, where dar laaf ieattiaohlaft aad aodaaa auffthotea will. Sit ia dieaer Iaiaa anafatildata Oaersoceae folia wtiet anea koatiaoierliohen Vaaavauf, let iudarohliaaie and practice Tolletindi "moisture defeat. On dia ttbtraogaaa surface aoffabreohtea OtI aad Waaatr lrinfen aioht ia dia folia after 1 ttttndifem standing shark lukewarm temperature.

Baiaaial S

Its refractory oil foil is represented with eiaea Utaaraog folyaaiddiaparaioo »« ia ia Btiapitl 4 beaohriebea, Teraehea · Vaoh dta Trooknen becomes aodaaa aiaa nioht Uberaocene, trade-

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Usual & egeneratoellulose oil applied to the cover and the entire arrangement or layered body in one place Plate brought and dried at a temperature tod etna 105 ° C. Following this, the laminate is increased to about Laugh at 245 ° C on printing plates and hold for about 15 seconds compressed with a »pressure τοη etna 14 kg / cm. At dec Ao formed laminates are the two full count with each other Tied and cannot be separated from each other without tearing the film.

Example 6

As described in Example 1, a gel is made from microcrystalline polyamide which has at least 90 liters of light less than 1 micron in size. Subsequently, the water is extracted with Ieopropanol and the product is finally dried in the air, whereby a powdery microcrystalline polyamide is obtained. A mixture of 20 parts by weight of the powdery material and 80 parts by weight of zinc oxide of the type used for electrophotographic paper is prepared and the mixture is processed in a ball mill for 6 hours. ^

This powdery mixture processed in the ball mill is then slurried in water and a dispersion is formed which has a solids concentration τοη of about 12 pounds. The dispersion is applied to a commercially available, conductive substrate paper to form an overlay with a thickness of about 0.025 mm. The paper is then ttbercogene in a Of-J at a temperature τοη about 105 ⁰ C dried and then calendered as described in Example 1 by forming a elektrophotographisohen paper. Possibly

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know traditional colors of the dispersion aue microcrystalline Polyamide zinc oxide as well as conventional sensitizers, “The benzoic acid and phthalic anhydride” contain "earth.

The above examples show the wide range of fields of application, to which the microcrystalline polyamide covers «Can ground. Eioh it rests that the only serve for explanation and ao can a.B. a «rope Tielsahl produced on laminated bodies «, meanwhile one foil or the like. "it dee" ikrokrietallioene Polyaeld Uberaogen "Earth, an eo all binding agents" wipe the different layers serve su. When the TereeMedenen sub-β occurs It is established that the substances in the diapereions or fell incorporated "and can be porOaer at the overhangs Materials can also contain Tereohiedene fillers Find dispersions or gels application. Since · Applying the filler in the gels provides an opportunity to un a.B. the Φ * «*« «**** porosity of the substrates, ie fibrous webs distribute different thicknesses.

Example 7

A roll formed from regenerated cellulose fiber from water is then divided into a sheet by means of the laboratory equipment. Ss "ird a staple fiber aas regenerated Calla lots for the production of composed of Weββer" en films applied obei the staple fibers eiae Deaiergruße tone 3 _f O, and a length tone 1.125 whether comprise · Dia fibers "ground water sugeeetst in a container and in de «Water is dispersed by slow stirring with the formation of a uniform high dispersion of the fibers,« obei sin terfileen der fiber «

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Is prevented. Dae mixture, will have a consistency τοη etna

on · Daa shuffling and beating continues while the slurry to a consistency τοη etna 0.033 ^ Terdttnnt will. Bs «earth sheets made with dimensions of 20 ζ 20 approx, by introducing quantities of the slurry into the conventional planer and wood blade form. Dee wet yaser sheet A wringing torch is then squeezed between a wool felt with the waaaerblattaeite down on the sieve. The handsheet then becomes the conventional one Brought drying container, with the wire β θ JJ »naoh below Gate lies and rermittela in contact with the container surface held by a filsbandea. Those made in this way Sheets correspond to a substrate weight τοη about 23 kg sheets based on the weight of a Hies (500 sheets! with sheets measuring τοη 61 χ 91 cm

Ss Termiifcels this method also prepared handsheets in which the method described in Example 3 microcrystalline polyamide gel of Yaseraufsohlämmung added and hereby gate diluting the slurry Termisoht is · Bas microcrystalline polyamide has a particle size such that at least 90 wt. Ί "a particle size τοη less than 1 micron. Hand sheets were also produced by adding 0.1 ^ of a commercially available melamine-formaldehyde anchoring agarcea (Parez 607) based on the fiber weight to the slurry, before the microcrystalline polyamide gel is added to the slurry. All samples of the hand sheets are heated in connection with this to about 220 G ⁰ and 30 seconds under pressure τοη eiae * 17.5 kg / om pressed.

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Ea «la · further series of hand sheets Ια are produced in the same way, but it is eich bai de“ sageatsten ”ikrokriatalliaen Pο ^ eaid in the daa according to dta Beiapiel 1 manufactured product aod the kneaded hand sheets“ earth brought to aloe tea temperature tob 245 ⁰ O and not ar a «brackish tob 17.5 kg / e« suaa «» squeezed. The physical properties are shown in the leaflets and in the following table *

no Zuaats to Ancherungahars Zusata to Yerankerungakars

(0.13t fares 607)

MCP ⁺ Zerreißen Zerreifeatigkeit MC ^ ⁺ lerreipen pf

^ S kg * g cold, kg

talliiiAii SvIon 6

0 not ■ edible 5 170 3.8 10 24O 4.6

0 not "edible 0 not" edible

5 132 3.3 5 165 3.6

10 185 3.9 10 220 4.5

mfcro, fcrie- fralliaea Ιτίοη 6/6

0 aicht «edible

5 140 3.5

10 200 4.4

+ VCF - BicrocriatallineB polyamide

Example 8

Sa "ground Kunataeidefaern" with a size tob 3.0 denier and a length of clay about 3.8 cm into a web, the one Thick tone about 12.7 b>, with the middle of a conventional one EardierungaTorgangea is being worked. Ba becomes one 39bige diaperion of the microcrystalline polyamide according to Beiapiel 3 Sprayed over both surfaces of the hangings and the same then passed through hot air jets and dried. the The amount of dispersion β is such that at about 2.53 tons of polyamide beaogea on the weight of the 7aaerο be applied. The troubled one Bahn is aodaan awiaohen raised MoaterroHeahindurchgeftlirt,

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the «la Torapriogeades IT« t »work show» the aioh from anal S & tses parallel preliminary projections are put together, that is, at right angles cut, never described in US Pat. No. 2,464,301. A conventional, single-pattern cargo loading operation of this type is old but heating up a good order An or dηODg for the bina parts applied to the di · faeeraatte Print τ er a eh en. The orphans are at a temperature tod etna 220 ° G heated aod the pressure is sufficient, u> generate χα as a grid or fltappmuater, where dia fibers ait each other Terbunden where daa rorapriagvnda Eippennetxwerk the sweeping overhang Whether he areas the ilbaraogaoan orbit eye xaaioandar brings. Dia «as ordered, surfaces for blue as soft and loosened up, yes, the “quilted product” has a smoothness Except for rigidity or stiffness on the attached surface.

It is advised that in making such a web, each eeaicaata joining in spaced relationship may be linked by an entepreoheixieB pattern of the Muaterwalien. Then wipe the leaping fiippan or other ia. AbatandsTerhaltennia gate-lying arrangements on the pattern beaufeehlagta pressure can amount to about 3 _f 5 - 700 t% / cm depending on the tone of the »gaWlnaohtan extent of the connection. Where surface layers that are bonded to one another are intended to be used as an envelope "for relatively thick fiber-shaped webs", simply obtained orphans are used and the web is subjected to a pressure of only a few kg / cm.

According to examples 7 and 8, the microcrystalline polyamides are into the fibrous products either by incorporation Clay Diapereionen in the Vaeeraufachläamuag or by applying a «Diaρeraion on the surface dea faaerfuroigen

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Body incorporated north. An impregnation can be introduced "ground" urther alteraaxiri ^ "procedure is, of course, that the microcrystalline polyamide rermittela also in a faeerförmigen body» with the faserformi ge body by a dispersion of the microcrystalline polyamide performed _"ird.

The products according to the invention can also be used for filtration applied by colloidal particles. The colloidal Microcrystals of the polyamides have sizes that vary range from small virus sizes to bacteria sizes. PiIter can thus be produced with such pore sizes are that the filters to filtration separations τοη particles in the colloidal size range where the particles can be in an aerosol form or the particles can be dispersed in a liquid medium. at In making these filter assemblies, a sheet of the microcrystalline polyamide having a specific particle size range can be used first made and then attached to a fibrous or other porous support part, such as a.B. from watery Fibrous film or sheet made from suspension or a sintered ceramic plate. It goes without saying that the material of the carrier is so chosen is that the same compared to the liquid or gaseous -, ■ Medium is inert. Optionally, the over-eye can directly on a porous part either by applying the dispersion to a surface of the porous sheet or by impregnating the porous sheet porous sheet are applied, whereby the interstices are partially filled and a finished product with the desired pore size is obtained.

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Example Q

Ea is eic lO ^ strength aqueous gel, never described in Example 1 were prepared. The crushing is sufficient such that at least about 90 # of the particles have a size below 100 JL · The gel is applied to a film made of polytetrafluoroethylene (Teflon) and the supernatant aspirated film in an oven at a temperature τοπ 105 ⁰ C in air dried . The coated film is then heated too 24O ⁰ G to a temperature, and then a pressure ron about 350 g / cm subjected and held for about 5 minutes at this temperature under the stated pressure. The heating and compression is only used to make the particles sufficiently tacky so that they are bound together without constant destruction of the individual particle structure. It is clear that the heating must be controlled in such a way that the particles are prevented from sticking together or melting together, since this destroys the porosity of the finished film or plate. The amount of gel is sufficient to produce a porous plate-like structure with a thickness τοη about 0.05 mm. The gluing of the particles in this type of structure can be brought about at lower temperatures by forming gels in swelling agents for the polyamide, such as aqueous formic acid solutions or m-cresol.

Porous sheet formed in this way is then transferred to the surface of a sintered glass plate, such as they are usually applied in laboratoriume Buckner funnels will. The foil is then attached to the support part by touching a row of spots with the tip of a soldering iron causing melting of this part of the under the soldering

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butt tip lying Polie is conditioned and a connection with the supporting part results in · This method of attaching the polie is comparable to the pointfc welding τοη Metals.

Example 10

Hand sheets are produced from regenerated cellulose staple fiber as described in Example 7. When the slurry is formed, about 5 $ microcrystalline polyamide (.HyIon 6/6) are applied to the slurry, based on the weight of the fiber. The finished sheets are then impregnated with a liquid dispersion of the microcrystalline polyamide, the particle size being such that at least 85% by weight of the particles have a size not greater than about 0.5 microns. Excess liquid τοη is allowed to drip off the leaves and they are allowed to air-dry. Then the leaves are transferred to an oven and kept at a temperature τοη about 10 ° 0 while pertaining to drying. The leaves are then brewed to a temperature τοη about 240 ⁰ C and pressed together with a pressure τοη about 700 g / cm and held for about 5 minutes under the action of τοη heat and pressure, with an adhesive weld of the particles to each other and to the supporting, coated lasern achieved wjrd.

The specific porosity of the above types of filter orders can be changed depending on the particle size of the microcrystalline polyamide in the dispersion and gels. When impregnating a porous support part, never a fibrous one Sheet or a sintered ceramic or sintered The porosities are also glass bodies due to the proportion of the microcrystalline used in the impregnation of the body.

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nan polyamides controlled or rerandert. With the above Examples of the substrates are explained with reference also to sheets produced from aqueous suspensions «Orden, whereby the fibers are regenerated cellulose fibers. It arises naturally that from aqueous suspensions formed sheets or non-woven sheets can be used if made from other fibers including both organic and inorganic fibers. Sheets or transparencies with a wide range of Yiskosity can be made from natural cellulose fibers are produced and the properties of such ^ sheets or films, in particular the porosity and mechanical Strength, will τοη the specific fiber, the extent of the Stapeine and the refining depend as it is commonly known. Where other synthetic fibers are used come, they can be such that after the formation of the sheets made from aqueous suspension or carded Train the fibers together by applying τοη heat or by using other binders as the above-described microcrystalline polyamides »

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Claims (8)

Claims 1. Shaped, normally solid body and one self-adhering Coating on the iron bar of the body, characterized in that the body is a colloidal microcrystalline Is polyamide. 2. Solid body according to claim 1, characterized in that at least 10 wt. ^ And preferably at least 90 wt. ^ Des microcrystalline polyamides have a particle size of no more than 1 micron and preferably at least about 10 wt. # des microcrystalline polyamides do not have a particle size τοη Above about 0.1 microns. 3. Pest body according to claim 1, characterized in that it is a fibrous body. 4 · solid body according to claim '3> characterized in that the overlook of -predetermined, in the distance rorrectnie surfaces of the fibrous body is melted. 5 * Solid body according to claim 3 »characterized in that a film or sheet is applied to the coated fibrous body and then the coating is melted 6 · solid body according to claim 3 »characterized in that the fan-shaped body is paper. 7. solid body according to Anspruoh 6, characterized in that the coating includes a photosensitive product. 8. solid body according to claim 1, characterized in that daduroh it sioh over a non-fibrous foil, e.g. cellulose material, acts. 109842/1728