DE1771424C3 - Process for making color transfer material - Google Patents

Description

3 4

Hen, who put a dye-binder on the carrier, so that a layer of sludge and a layer on top Layer and on top of this color layer a clear to white clouded liquid layer protruding from the wax

layer wear, being still between the carrier and forms a fine and at least over a certain period of time

an intermediate layer placed on top of the color layer, stable dispersion cannot be prepared. Bs is therefore

can be. One of the disadvantages of this known 5 half also not possible, the material described

Due to their multi-layered materials, oil-free materials can be reproduced on conventional coating machines and in precisely

Due to the structure, namely to produce their complicated and expensive manageable quality, since with careful Production in several steps. The individual capable of recirculating the coating mass over and over again Layers do not only have to occur in a correspondingly large number of inhomogeneities.

Operations under special conditions are applied to the purpose of this invention to overcome these disadvantages and be dried, but the individual help and solves the task of a process to de-preparaJonen also have to wind coordinated so that in a single coating process be that it or the layers made from it a Drafting material, especially for the do not interfere with each other. single use, with a thin layer of paint,

Also the union of contradicting 15 the aging-resistant, diffusion-resistant, dry and Properties, namely good adhesion that does not smear, intensive, sharp, smudge-proof Color layer on the carbonless material for the purpose of and erasable copies and who delivers it Achieving a high degree of cleanliness on the one hand and one that is quite outstanding instead of fillers

good adhesion of the color transferred to the copy - higher amounts of color bodies and these also in

incorporate particles to achieve good smudge resistance »o color-deep state,

of the copies on the other hand comes across again and again. This task is solved according to that,

on material and process-related difficulties - that you get gel-forming waxes, at least

chains. a privatized wax with a penetration \ on

Single-layer copy materials have already been described, 1 to 10 and at least one wax with a penefatl. Their layer has a penetration of 10 to 60 or a mixture of both with a continuous, practically homogeneous average penetration of H) to 20 and up to a solid coating of a waxy material. Since 20 percent by weight of a high-molecular binder "adds large amounts of this to the color particles as a liquid that is transferred in the heat in a material that serves the wax solvati-binder, not to slightly polar liquid and the material itself is soft and sticky, the 3" a concentrated, clear solution, but not smudge-proof due to copies. Cooling to room temperature 40 to 70% by weight and the copying material is for the same reason piwent the amount of wax in the liquid as a gel smear. It does not matter whether the particles are precipitated in the dispersion solution then whether the carbon mass with a liquid color from which the pigments are strongly dispersed. the melt thus obtained with a suitable solid binder as a mass in a known manner on the paper solution in a liquid: organic solvent and brings the liquid below the softening or in the form of an emulsion or dispersion at the temperature of the solid precipitated Wax particles of suitable liquids applied to the carrier distributes. .
will. If necessary, you can use the dispersion solution

A more recently known color over- 4 ° with setting or compliance with said support material of the single-layer type has a quantitative ratio between excreted and coating, which in a non-sticky wax in the usual dissolved wax parts and with preservation or manner contains carbon black as a pigment, but that additional formation of the gel particles is mixed with additional wax with talc and dilute together with liquid or wax solution.
This by means of low molecular weight ethyl cellulose as * S Preferably \ is learned in such a way that a binding agent is retained on the carrier. The liquid with positive, preferably large batch production of this known material is made by using the pigment and the talc in a solution or by heating the solution of wax and ethcellulose in toluene or preferably rapid cooling of the liquid dispersed, the dispersion spreads on the carrier 5 <> causes. Liquids are preferred, and the solvent evaporates, the wax, which can easily be removed from the layer, crystallizes out. The talc should cause the formation of particularly aliphatic and aromatic carbons, a layer of fine discrete particles, hydrocarbons or chlorinated hydrocarbons, preferably and at the same time the coefficient of friction of the layered light gasoline, 1,1.1-trichloroethane, benzene. Reduce the surface area so that it is more resistant 55 luene or mixtures thereof.

against scratching or rubbing, on the other hand For the classification of wax stones, in particular

but not the transferability of the wax-dye-der of the gel-forming waxes, be on F i s c h e r -

hinder particles under the pressure of writing. P r e s t i η g, »Laboratory book for the inter-

As practical tests have shown, the search for technical wax. Har? - and a mixture of oil «,

however, these requirements are insufficiently met. 60 3rd edition, VEB Wilhelm Knapp Verlag, Halle (Saale).

The paint layer is neither clean to the touch, nor are the he 1958, p. 463 referenced.

aimed copies smudge-proof and intense. The main disadvantage of this known material, however, is that, for the sake of simplicity, the following is a procedural difficulty. The "harder" and "softer" wax denotes,
Mixture of wax, talc, carbon black, ethyl cellulose and 65 Be-toluene, in particular, has a disproportionately small amount of natural or synthetic waxes, oxidized pigments, which produce faintly colored copies After stirring, hydrogen, mineral waxes or their minerals

loop, preferably branched pennsylvag or branched aüphatic alcohols with

niche petroleum waxes. 1 to 20 carbon atoms, especially of the fatty alcohols,

Examples of suitable amorphous waxes are those preferably made with styrene and its derivatives (e.g.

commercial products listed below, which are «-methylstyrene, vinyltoluene, etc.), modified alkyd

For the practical implementation of the invention 5 resins, ethoxylin resins or / uad with natural acids

have proven particularly effective: modified phenolic resins used.

Branched-chain Pennsylvanian petroleum waxes, ins- This group of binders is preferred

special those made exclusively from crude oil residues because their representatives are already in concentrations of

through selective separation with a narrow melting point - a few percent by weight, the viscosity of the invention

area obtained, uncut products with »wax dispersion prepared according to and in particular

very fine structure and great plasticity, significantly reduce the adhesion of the coating color, in particular,

and cohesion, especially the qualities with one when obtained by cooling the wax solution

Melting point according to ASTM B 127-49 of 84 to 86. They are therefore used here as a viscosity regulator

or 88 to 90 ⁰ C and a Penetration number according to. Their effect is particularly therefore

ASTM D-1321-57 T, at 77 ⁰ F, 100 g of max. 8 15 surprising, because carbon paper inks as above

or 7 and white to light color. already said, because of the incorporated soot or

_, 'Pigment particles with regard to their viscosity and

^ Wax flow properties cause particular difficulties.

Acid wax based on montan wax, dropping point To explain this phenomenon one can - without

78 to 83 ° C, solidification point 73 to 77 ° C, acid number ao the invention is based on any theories

135 to 155, saponification number 155 to 175, density at place - assume the following:

20 ° C, 1.00 to 1.02 (all values according to the DGS- As is well known, microcrystalline waxes show the

Standard methods determined), color light yellowish. Ability to dissolve solvents under a swelling

, _w . hold back strongly (retention effect). This

L-wacns ^ _{5 appearance is} greater by s0, the smaller the proportion Acid wax based on montan wax, is the drop point on straight paraffins. Since the previous

80 to 85 ° C, solidification point 75 to 80 ⁰ C, acid number standing waxes mentioned mostly by a special

120 to 140, saponification number 140 to 160, density with a high degree of branching and often a large proportion

20 ^c C, 1.00 to 1.02 (all values according to the DGF for ring-shaped paraffins, this is

Standard methods determined). Yellowish color. 30 They have a particularly strong retention effect. Candelilla wax can also be used. stamps; from a hot solution they are difficult

As softer waxes, the soluble parts of the micro-waxes come out first on cooling and, in the narrower sense, can be considered, including the ozokerites, relatively large swelling bodies. As the solution cools down further and soft ceria and similar petroleum waxes, the solution also gradually separates out, in contrast to paraffins, with a micro-somewhat less sparingly soluble fractions also in a crystalline structure and a melting point in the form of swelling bodies. In this way, from about 60 to 70 ° C, in particular about 65 ° C, a creamy to gel-like, in the order of magnitude of this. Also suitable are ester waxes with a swelling body inhomogeneous mass which, in addition to the acid number of less than 60, preferably between 10 and different and solvated waxes, also contains waxes dissolved in the 30, a saponification number between 80 and 150 and 40 solvents,
a melting point below 85 ^C C. Have proven the. The retention effect of the Japanese wax and finely crystalline beeswax waxes according to the invention, however, has the disadvantage that wax is used. a relatively large amount of solvent must be used to produce a

The waxes can also be prepared in mixtures of two spreadable masses; especially with or more representatives of the same group or 45 addition of finely divided, "active" carbon black as a pigment used in both groups. The mentioned such a dispersion, if not enough solution products are anyway mostly even mixtures of medium is added, such a high viscosity that different, albeit related, compounds; it is neither sufficiently mixed up nor satisfactory so the montan waxes are preferably made from crude oil. The use of great However, excretions from more or less intensive amounts of solvent are economical Refining won. So it is mostly an unsatisfactory point of view, since the losses are high Refining "cuts" so that it is also possible, or and costly solvent recovery on site a harder and a softer wax systems are required.

a medium wax of a corresponding fraction width. The aforementioned viscosity regulators create here to use provided there is a mix of these 55 remedies. May be that exercised by them Both waxes in the quantities indicated above - influencing the viscosity, in practice preferred ratios and the same properties show a decrease in viscosity, brought about by colloids, peptisation will be explained, however, will also come

The binders serve to cement the wax electrical charge reversal processes with the pigments

and color particles with one another and on the layer 60 at the phase boundaries. It should be there

carrier. The type and amount of the layer-forming substances are not necessary for the layer-forming substances

can by the person skilled in the art in the context of the substance below is genuinely soluble in the solvent, if

Explanations can be easily determined. it only has a greater solubility than the waxes.

It is preferable to use a binder, however, substances show that they are soft in the solution Only dissolve cloudy in the area between the solvent and the drying agent, a weaker effect in temperature at least predominantly in the direction of a decrease in viscosity, so that greater Liquid is soluble. Amounts of either this substance or the solution

Polyvinyl ethers are particularly suitable and straight chain means must be used so that the same

7 8

A decrease in viscosity in the case of a readily soluble sub-surface will have a certain absorbency, but without punching it is achieved. To be too porous, especially of the latter. If necessary, the carrier can usually be 1 to 2 ⁰ I ₀ , but the material can also be provided with a backing layer or / and an intermediate layer, taking into account the additional amount, or otherwise prepared, the desired reduction in viscosity and the 5 To achieve a high depth of color It is particularly the binding effect that the substance in the dispersion has to offer that the sparingly soluble wax sion / solution on the one hand and the finished color layer are separated out as gel particles which, on the other hand, are at least partially exerted by the skilled person simply because they are larger than the pigment particles or whose attempts are determined. Secondary particles or agglomerates.

The process has proven particularly useful as viscosity regulators the following commercial products: feature very well proven that you can apply the layer

the drying, preferably immediately after

Medium viscosity polyvinyl methyl ether with a K spreading of the dispersion, with air from about S to A value of 40. 25 ° C is applied.

Vinyltoluene-modified alkyd resin, 60 ° / ₀ in test

petrol. to understand this expression in a general way; for example

-Characteristics: a dye can be used instead of soot.

Phthalic anhydride 19 ° / ₀ which is mounted on a support. Linoleic acid content 33% Even with »wax«, waxes are not strictly speaking Viscosity at 20 ⁰ C 40 ° / ₀ ig * o (chemical) sense meant, but - like the

Substances counted in gasoline show - substances of more suitable

according to DIN 4 of a wax-like quality.

Natural resin-modified phenolic resin, the invention achieves that, for example Melting range 95 to 105 ° C, with carbon black the layer of one with hot carbon

soluble in aromatics, among other things. »5 there is a high proportion of soot that cannot be achieved,

Polymers based on vinyl acetate; in organic terms, these carbon blacks also have a significantly higher blackening Solution. own and the layers of paint despite the high

Thermoplastic polyvinyl isobutyl ethers. Soot content a previously unknown smear resistance

exhibit. Furthermore, the layers of paint are from

You can also use mixtures of these viscosity regulators 3o dry, tack-free consistency; so you are with each other and / and with other layer-forming for sets of forms and for processing on composite substances use that this effect in the menlragmaschinen particularly suitable. The invention used Do not show solvents, e.g. B. Äthylcellu- according to generated layers do not suffer the known loose in 1,1,1-trichloroethane. Change in hot carbon colors with longer

Even if the binder on the one hand, and the storage, in particular, they do not cure afterwards. Beson liquid for dispersing or dissolving the ders is important that the inventively prepared Waxes and the binder to be added to each other- color layers with improved effectiveness only are correct in order to achieve optimal results in the conventional description of a quarter to a third of the weight Achieving senses can be demonstrated for the licher colored layers of disposable carbon paper Above given groups of substances with the mentioned 4 ° Without the invention on a specific theory The following is an explanation of not wanting to restrict all solvents to weakly polar solvents achieve good to very good results. excellent properties of the

The viscosity-lowering effect of the above-mentioned materials produced according to the invention, in particular substances it also enables such carbon blacks to be pigmented with the greater depth of color of the color layer to be incorporated into the coating, which leads to 45: Despite extensive experiments with color ground Its large surface area has a pronounced thixotropic soot, which has so far been achieved with hot carbon tropy show. color, the degree of blackening of the

By adapting the type and amount of layered fonts to increase beyond the known level, constituents, especially the waxes and the soot, always experience a reduction in the Layer-forming substances, the bond So degree of blackness in hot carbon paints. The cause and the adhesive strength of the color layer on the carrier lies in the liquid oil or melted wax, vote and the plastic separation of the dye which fills the soot particles in the liquid state and regulate the layer under the writing pressure. This is what makes the hot carbon paint flowable in the first place believed that the pigment particles contain the fine, unlike hot carbon paints

No oily paint layers produced according to the invention via gel-like swelling bodies in the dry state 55 Any wax particles that came in were enclosed, but not constituents. The wax particles have approximately or are not completely filled by these, the size of the color pigment particles, in the case of carbon black, the dei just as little of the layer-forming binders, agglomerates of the secondary particles, the former being im which because of their high molecular weight and linear mean IO to 20 μ and the latter in Mitlei 20 to 30 μ Build-up does not penetrate into the pigment particles 60 are large.

but the gel and pigment particles under- When the layer is formed, this is how drying is carried out

cement each other and steer the hardness of the paint layer so that the gel particles remain in solid form, influence. so do not penetrate into the carbon black or pigment particles

Paper can primarily be used as a carrier. The weight of the soluble wax and In particular, a machine-smooth or one-sided smooth 65 binder proportions should be the weight of the color blacks Raw material such as 20 g carbon base paper. However, it cannot exceed. So you will probably get through also nonwovens made of synthetic fibers and others which essentially enclose carbon black particles without Materials are used that at least fill them in after the layer formation.

■ f%

9 10

Whether the interior of the pigment particles is filled with oil or wax so that a flowable opaque liquid may be filled with it is or not, but has now resulted in a basic thixotropic behavior. This dispersion additional difference in optical behavior contains gel particles in solid form, due to solution Consequence. This results from the following consideration, moderately and genuinely dissolved wax components solvated, as well the waxes and binders dissolved as an example of a single carbon black secondary particle S, which are also used in Zimmerzugrunde is laid. remain temperature soluble. Tn this mixture of

A hot carbon particle, i.e. a soot particle, that is dispersion and solution is the color pigment under

is filled with wax and oil, can be broken up and mixed up with a dispersion; the preparation

Droplets are compared in which the soot chain is now ready to be coated. It is easy to work with.

is stored in a ball shape. A beam of light that comes from io After the paper carrier has been coated,

falls outside into such a droplet, a kind of filtration occurs after a as is assumed, leading to the

or repeated total reflection inside the certain zone structure of the finished material results in:

Droplets emerge from this, the true- In the surface of the paper is preferred solution

It is likely that it will not penetrate any further into the medium or wax solution. On the fiber

Layer in, but is deflected back outwards, especially if the layer is immediately cold

will. During this process, only a small amount of air occurs on average - air is blown on, the dissolved wax is finely divided

docile weakening of the beam, since the volume is deposited. The wax particles create a

of the oil droplet is much larger than the one in it that reduces the porosity of the carrier surface and

included carbon black chain, and the light absorption on the other hand, direct contact between pigment

therefore is relatively low. Avoided ao and fiber, which are denser than air. On the so educated, preferential

Medium oil / wax increases the refraction and reduces the zone consisting of soft wax components

the absorption of light. on hzw. those of

The practically unfilled gel particles produced according to the invention are coated with pigment particles, and these Soot particles, on the other hand, contain air, so that when light comes into contact with each other and on the wearer, through mediating incidence there is no refraction and no total reflection. »5 binding of the long-chain binding agent, the The light will so, if it is not on the carbon, slowly evaporate the solvent chain is absorbed, the particle excretes practically in a straight line, due to its high molecular weight and disappear in the depth of the layer, but it is also important for the penetration into the paper since it is finally prevented from a soot particle after being broken. Like microscopic examinations is absorbed by the surrounding wax. The blackness shows, occurs when the paint layer is written off the layer is therefore significantly higher. The detachment of the pigment-wax-particles are eye-identical applies to the copies produced. borrowed in the above said transition zone, since the

This high color density enables the weight of the fibers at the "written off" parts of the surface The color layer can still be largely reduced with wax to an extent previously unknown to that of the paper carrier and in this case coverage and blackening 35 are also layered, which, however, does not contain any pigment. to increase. Disposable charcoal paper that after

Method according to the invention was generated, comes Example 1
with a layer of paint of 2 to 3 g / m ^{2 works} well, while a hot carbon single-use carbon paper orders of 50 parts of gasoline with a boiling range of 8 to 10 g / m ² are reasonably sufficient to achieve 40 100 to 125 ° C, 7 parts of the above-described copies, apart from other disadvantages, requires branched-chain Pennsylvanian petroleum wax. This advantage makes the present invention, 6 parts of microcrystalline wax 60/65 with a softening procedure, contrary to conventional views economic range of 60 to 65 ° C and 2.0 parts of polyvinyl ethers economically feasible and provides even products of stearyl alcohol by heating at 80 to 100 ⁰ C which are cheaper than the well-known disposable carbon papers. 45 clearly resolved. The clear solution is rapidly cooled to a temperature of 25.degree. C. or the material has not entered the pigments below it, with strong stirring. The result is an almost paste-like form, which can be recognized by the fact that the transfer white-opaque mass, which, in addition to the dissolved wax, is immediately removed from the ability when the wax particles are dispersed in the solution, heated until it melts. 50 holds. A further 35 parts of the are added to this dispersion

The invention is added below with reference to the same gasoline. The mixture is explained in more detail with working examples. In these examples treated with the aid of an effective dispersing unit, parts are parts by weight. In the now flowable, finely divided opaque dispersion, unless otherwise stated. If 7 parts of a subsequently compacted Gap-General are carried out, the procedure is as follows: The waxes 55 or flame black, namely a color soot with "nei", are dissolved in a solvent that is as little hot as possible with a clear average particle size of 500 to 720 Å and one. This solution is vigorously agitated by means of an emulsifying or BET surface area of 32 m ^a / g, and 1 part of a fine dispersing unit, and dispersed, in the form of secondary particles, cooled in the process. An initially oily dispersed silica may form and stir then below sion, the particles of which are firmly dispersed on further cooling at 60-25 ° C. This preparation is followed up, with the entire solution becoming opaque and pasty brushing method on the surface. 20 g cellulose paper in such an amount on

Now at the latest the one preferably used is worn that a layer of about 2 to 3g / m ^: Dissolve viscosity regulator in the dispersion, creating dry weight immediately after the stripe

this becomes thin to the desired extent. 65 the still liquid preparation is applied mil

If necessary, the dispersion is blown on with a continuous stream of cold air and then connected « Stir with further portions, the gel formation not dried in a stream of air at room temperature. Zui

interfering solvents at 20 to 25 ° C, removal of the last solvent residues is there:

Material is then briefly exposed to a temperature to about 40 to 5O ⁰ C. The product can be called disposable carbon paper. It lies completely flat, has no grip and, despite the small amount of paint applied, provides a deep black copy that is completely detachable from the support, is dry and smudge-proof and produces copies with sharp contours.

Example 2

7 parts by S wax, and 6 parts of Japan wax are hot dissolved in 45 parts of gasoline 100/125 rapidly cooled under the influence of a dispersing unit to 20 ⁰ C. The result is an opaque paste which is diluted with a further 30 parts of cold gasoline 100/125 while dispersing. To this mixture, which contains gel particles dispersed in a wax solution, 4 parts of the above-mentioned vinyltoluene-modified alkyl resin and a further 10 parts of gasoline 100/125 are added and the whole is stirred well.

7 parts of carbon black are incorporated into the dispersion obtained.

The now finished dispersion is coated onto cellulose paper in a known manner in such a way that at Carbon black the application is 2 to 3 g / m *. Immediately after After spreading the preparation, it is dried as described in Example 1. The results are comparable to those of Example 1.

Example 3

The procedure is as in Example 2, except that the same amount of L-wax is used instead of S-wax, beeswax instead of Japan wax and 35 parts of inactive carbon black instead of 7 parts of color black, ie one thermal cracked carbon black with an average particle size of 3000 to 5000 Å and one BET surface area from 6 to 8 m ^a / g.

Example 4

The procedure is as in Example 1, but instead of the micro-wax 60/65 plasticizer is used and as Viscosity regulator 4.0 parts of polyvinyl methyl ether K 40 (20 ^, Ig in toluene).

Example

The procedure is as in Example 1, but used as a harder wax candclilla wax and as a pigment 8 parts copper phthalocyanine blue.

B e i s ρ i e 1 6

The procedure is as in Example 1, but the solvent or diluent used is 1,1,1 -Triclilor- > oh ethane.

Example 7

The procedure is as in Example 1, except that 7 parts of ultramarine blue are used instead of carbon black. »5

Example 8

The procedure is as in Example 1, but 3 parts of a highly compressed carbon black are used. The dispersion In this case one dilutes 70 parts instead of 35 parts of gasoline.

Example 9 The procedure is as in Example 1, but used

instead of the 50 parts gasoline that are used to dissolve, 50 parts toluene and instead of the 35 parts

Gasoline, which is used to dilute the dispersion

be, 50 parts of toluene.

Example 10

This example is intended to explain how, by means of simple experiments, suitable plasticities for the production can choose a material whose color layer, when used only once, adapts to the Writing pressure is completely transferred.

Approach 10A contains significantly more than 50 ° ₀ dissolved fractions. The layer is sticky and is only insufficiently detached from the carrier. On the other hand, batch 10 C contains too few soft waxes. The copy does not show enough contrast and the transfer is fuzzy and does not match the type. The layer also has the disadvantages of already showing a certain brittleness.
Approach 1OB gives optimal results.

Harder wax.
Softer wax
Viscosity regulator

5 parts (26.7 ° ₀ )

8 parts (60.0 ° / ₀ )

2 parts (13.3 °; ,,)

writes very badly.

Color becomes little

transferred, color

faint copies 7 parts (46.7 ° ₀ )
6 parts (40.0 ° ₀ )
2 parts (13.3 ° ₀ )
writes very well, shift
is elastic. Copies
are type-appropriate

9 parts (60.0 ° ₀ ) 4 parts (26.7%> 2TeHe (13.3%) writes usable abei blurred, the Schichi is brittle

This comparison of approaches shows that the hardness or elasticity of the paint layer can be adjusted as desired so that satisfactory copies can be produced.

Example 11

The procedure is as in Example 1, but 6 parts of beeswax are used as the softer wax and as Viscosity regulator 2 parts polyvinyl butyl ether.

In all of the above examples, not only are materials obtained that meet the requirements set out at the beginning but also has an easily spreadable prep despite small amounts of solvent parations available.

Example 12

The procedure is as in Example 1, but instead of the polyvinyl ether of stearyl alcohol, 1.5 part is used Ethyl cellulose and uses 100 parts 14.1-trichloroethane instead of 50 parts gasoline to dissolve and instead 35 parts Gasoline for dilution, 200 parts of 1,1,1-trichlorethylene A decrease in viscosity is not observed in this Fa, so that the solvent quantity must be increased greatly in order to introduce the soot

and the otherwise practically solid mass dispersed and to make spreadable.

The following table shows the soluble fractions and penetration for a number of waxes or wax mixtures. These values apply to 20 ° C for a dispersion in gasoline 100/125, which is obtained by cooling a hot solution with 15 percent by weight Wax was generated. The penetrations are for the soluble or insoluble fractions of such a dispersion determined in the solid, solvent-free state after each four work-ups, d. i.e., the gel was S excreted by cooling, redissolved, and by cooling down to excretion separated. This was repeated four times-

designation Soluble part
"/. penetration
soluble part penetration
insoluble part Pennsylvania wax
S wax
L wax
finest crystalline microwax
Ceresin
Micro wax 60/65
Ozokerite
Wax mixture from Example 1 23.7
5.4
18.1
17.6
63.5
77.3
79.4
53.8 21
10
10
12th
30th
51
38
24 8th
2
1
3
7th
8th
4th
7th

Finally, the experiments are described by which the dissolved wax components in a Have a cold wax-solvent dispersion determined.

As an example for carrying out the experiments the following are used to determine the dissolved wax proportions in a cold wax-solvent dispersion Recipe:

Harder wax.
Softer wax
Viscosity regulator
Solvent ..

Description of the experiments

wax

Pennsylvania Petroleum Wax
Microwax
Stearyl alcohol
Petrol 100/125

Weight parts

14th

12th

170

200

14 g harder wax, 12 g softer wax and 4 g of viscosity regulator are in 100 g of solvent in a 500 ml three-necked flask with stirring on Dissolved hot under reflux. This hot solution is then as quickly as possible while stirring in cold water cooled to below 25 ° C. A fairly pasty dispersion forms. This is still with 70 g of gasoline 100 125 diluted from room temperature, so that a 15 ° wax dispersion in gasoline 100,125 is formed. The dispersion is centrifuged. After centrifuging for 30 minutes, the liquid phase is 168 ml of the specific gravity 0.73 g ml determined. After evaporation of the liquid phase, a wax residue remains of 11.8 g. The 11.8g correspond to 39.3% of the wax mixture used.

The amount of solid centrifuge residue after drying at 110 to 120 ^° C. in a drying cabinet is 16.9 g. The dry, solid centrifuge residue is used again for the production of a 15% wax-gasoline dispersion using the test conditions described above, but using fresh gasoline 100; 125 is used.

After centrifuging and evaporating the solvent, a wax residue of • 2.9 g results in the liquid phase. These 2.9 g correspond to 9.6 °; _{O of} the initial wax mixture,

Remain as a solid, dry centrifuge return 12.7 g. which again to produce a 15 ° ', "igen Dispersion will be benum.

The experiment described above is repeated a third and a fourth time, with a soluble wax residue of 0.8 g = 2.7 °, _'e and g and 0.6 = 2.0 ° / ₀ Aüsgangsmenge of the wax mixture gives .

By adding the percentage of the dissolved Wax proportions in a cold wax-gasoline dispersion give the percentage of wax that is really dissolved in a cold wax-gasoline dispersion.

In the example above, it is found to be 53.6 ° / ₀ .

1 39.3%

Il 9.6%

"1 2.7 · /,

IV 2.0 «/.

53.6%
Example 13

Similar to Examples 1 to 11, a yellow transfer color is produced by adding in 70 parts by weight of 1,1,1-trichloroethane 7 parts by weight of the branched-chain pennsylvanic petroleum wax described above, 3 parts by weight micro wax 60/65, 3 parts by weight of an externally strongly plastic, vaseline-like Mi krowachses and 2 parts by weight of polyvinyl ether de> Stearyl alcohol dissolves clearly on heating. This clear solution quickly dissolves under vigorous stirring Cooled to room temperature This produces a (paste. 100 parts by weight of 1,1,1-Tri chloroethane and 30 parts by weight of toluene are diluted into the diluted mixture with the help of a; highly effective dispersing aggregates 13 ^ e vichtstefli a yellow pigment dispersed in

Then it becomes a black transfer color

15 · '16

Produced similarly as in Example 6 by adding 70 parts by weight of double-sided carbon dioxide 1,1,1-part chloroethane to 7 parts by weight. It is particularly suitable for producing form-branched-chain pennsylvanic petroleum wax, 6 batches. These are arranged in such a way that the stearyl alcohol clearly dissolves the stearyl alcohol by heating to produce weight parts of the above-mentioned vaseline-like supply of a blueprint, a copy or for ver-micro wax and 2 parts by weight of polyvinyl ether Solution is quickly deposited on room yellow with vigorous stirring. The temperature on the back cools and with 100 parts by weight of the transfer sheet attached black layer of 1,1,1-trichloroethane and 30 parts by weight of cold is used to produce the next copy.
Diluted toluene and finally 10 parts by weight of 10 parts by weight. The layers of paint are smudge-proof and do not lead

The yellow transfer color is applied on a for staining hands in use. Cellulose paper, especially suitable for copying purposes, with a special yellow color, has a high weight per unit area of 20 to 35 g / m about 2 g / m ² ; the material to be used. The characters produced also show a high level of wiping-dry strength on writing paper in a stream of air below 55 ° C.

On the back of the paper coated in this way, instead of the yellow dye used

becomes colored and uncolored in the same manner as described above of the colored layer

the black transfer color applied. Substances with high 'absorbency for

The one used on the front with a yellow and on the actinic light with equal success The back, for example, can be colored black.

Claims (9)

1 2 claims, characterized in that the claims: layer before drying immediately after piercing the dispersion with air of about 1. Process for the production of paint over- 5 to 25 ° C applied <carrying material, especially single-use carbon paper, p
by coating one at least superficially
absorbent carrier with a mixture contained in a
organic liquid in addition to waxing polymers
Contains binders and pigments, * thereby
characterized in that gel-forming io Waxes, at least one solvated. The invention relates to a process for the preparation Wax with a penetration of 1 to 10 and of color transfer material, in particular one-off at least one wax with a penetration of carbon paper, by coating at least 10 to 60 or a mixture of both with a superficially absorbent carrier with a mixture, average penetration of 10 to 20 as well as up to 15, which in an organic liquid contains not only waxes but also 20 percent by weight of a high molecular weight binding polymer, binders and pigments
means in the heat in one the waxes solvati- carbon papers, namely both multi-carbon Dissolving, not to slightly polar liquid paper as well as disposable carbon paper, carbonless paper to a concentrated, clear solution, paper for hand and machine copies and by cooling to room temperature 40 to ao similar color transfer materials usually have a color-releasing layer of 70 percent by weight of the amount of wax in the liquid separates out of wax, oil and speed as gel particles into the dispersion / paint. Such materials with oily paint solution then vigorously dispersed the pigments, layer, e.g. B. from hot carbon, the mass thus obtained are known to have significant disadvantages in a manner known per se. The layer of color smears on the paper and the liquid is kept fresh and becomes dry over time, half the softening temperature of the solid and hard, which drives off oil and other low molecular weight subdivided wax particles. punch migrate into the backing paper, whereby the 2. The method according to claim 1, characterized in that the ink layer decreases in writing intensity, and the draws that the dispersion / solution under copies are not smudge-proof. Adjustment or compliance with the said quantity 30 In the case of the so-called single-use carbon paper, ie Ratio between discarded and cheapest carbonless paper for the one-off dissolved wax components and with preservation or use, further disadvantages arise. Once an additional one Formation of the gel particles with charcoal paper is always achieved by applying diluted more liquid or wax solution. Hot carbon produced, d. H. of molten 3. The method according to claim 1 or 2, characterized 35 wax-oil compositions, the carbon black or the like characterized in that one contains a solvent with pigments. Those on the market positive temperature coefficient of solubility Disposable carbon papers are always with a to used for the waxes. high application of paint, which far exceeds that of the 4. The method according to claim 3, characterized by the type stop required amount goes beyond. not draws that aliphatic and aromatic 40 last, the application of the color layer must be very high. Hydrocarbons or chlorinated hydrocarbons because of an inevitable blackness or Mixtures thereof are used. reduction by changing the soot secondary 5. The method according to any one of the preceding particles in their light absorption capacity Claims, characterized in that hot carbon paints are used. All of these shortcomings leave one on the one hand natural or synthetic waxes, 45 substantial quality improvement, especially the oxidized montan waxes, their esters and amides, single-use carbon papers, hardly above the previous level solid hydrocarbons, mineral waxes more too. or their mixtures and on the other hand Japan- These disadvantages are typical of the hot carbon wax, Micro waxes, beeswax and / or processes, because this requires enamel colors, Soft ceresin used. 50 those on the coating or printing machines at the 6. The method according to one of the preceding customary high coating speeds or the Claims, characterized in that a coherent layer is produced Binders used which leave in the area. between the dissolving and drying temperature The theological requirements for the hot, completely or predominantly in the liquid 55 carbon colors, however, limit the workable ones is soluble. Amounts of pigment. Usually you can choose the color 7. The method according to claim 6, characterized in that even with pitted or weakly colored carbon blacks, polyvinyl ether is added as a binder of more than 20 ° / ₀ ; In the case of pronounced straight-chain or branched aliphatic carbon blacks, the amount is significantly reduced, if well with 1 to 20 carbon atoms, modified alkyd such carbon blacks can be processed at all, resins, ethoxylin resins or / and with natural resin made from deeply colored carbon blacks high oil binding, acid-modified phenolic resins can be used. practically no flowable hot carbon paints 8. The method according to any one of the preceding testifies, as it claims due to the high thickening, characterized in that the can no longer be processed. However, because of the amount of pigment by weight, they would be at least equal to their great depth of color,
weight amount of the dissolved wax in the dis- There has therefore been no lack of attempts to choose oil-free persion / solution. Color transfer layers for copy materials too 9. Develop a method according to one of the preceding. In particular, such materials are known