DE2022394A1 - Amide waxes for printing inks - Google Patents

Description

Amide waxes for printing inks

As is known, the abrasion resistance of printing and paints is improved by adding small amounts of finely divided hydrocarbon waxes, preferably polyethylene waxes. The lowering of the sliding friction caused by the addition of wax is a desired meandering phenomenon caused by a change in the surface properties of the dried and dry paraffin.

Polyethylene waxes usually have a molecular weight of between 1500 and 3000 _tons, which are finely divided in organic dispersants such as aromatic and aliphatic hydrocarbons, alcohols, esters, etc. and then incorporated into the paint mixtures in a known manner. The use of hemolecular polyethylenes, which are incorporated into the printing ink mixtures in the form of pastes which can be obtained by melting the polyethylenes in the presence of organic solvents, has already been described. It has also been proposed to use higher molecular weight polyethylenes in aqueous emulsion in special cases, for example in the production of aqueous flexographic printing inks. Also the use of polyethylene powders of a very specific grain size, which, without being dispersed beforehand, can easily be incorporated into printing inks.

■■ 1.0.9. «48/161 4

BATH ORIGINAL

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HOE 70 / F 803

are working is already known (German patent applications P 17 71 448, P 18 07 466 and P 19 24 545). In all cases However, it is felt to be a certain deficiency that the polyethylene The printing inks must be set in relatively large quantities in order to achieve a good effect.

Ks has now been found to have been that for quite some time known, so-called Acidwaehse itself gana excellent as improving the abrasion and rub resistance of printing inks Inquiries are suitable, and indeed in quantities, the case of the use of polyethylene is not entirely satisfactory Effect bliss.

The present invention therefore relates to the use of amide waxes of the general formula

ACKB
I.
H

where A is either an allphatic saturated or unsaturated hydrocarbon radical with 9-29 carbon atoms, or _{corresponds to the grouping-C n} H _2n ^ C0-NH-R, where η can be 2 to 8 and R in turn is a saturated or unsaturated one is an aliphatic hydrocarbon radical with 2 to 20 carbon atoms, methyl or hydrogen

and B either vase carbon, or an aliphatic saturated or unsaturated hydrocarbon radical with 10-30 carbon atoms, or the grouping -C _n H _2n -NH-CO-R, in which η ■ 2 to 6 and R is a saturated or unsaturated hydrocarbon radical Hit 9 to 29 carbon atoms 1st,

than additives made in amounts of 0.05 to 3% by weight for printing inks «To improve the abrasion and abrasion resistance of the

- ^ßAD

HOE 7O / F 003

Di * srfindungsgeaäS used · », known eel waxes as geaeiiisaaee Xennseichen have the group -CO-HH-einaal or multiple molecules« ad can also be produced by methods that are also known; 80 and 200, varaugsweise 120 to 16O ° C and deaf corresponding to ¹ set by the German Society for Fat Science definition of ¥ achsbegriffss (Fette, Seifen £ 2, 729 (1950), ^ i, 275 (1952) Fette, Seifen, Anstrichmittel 153 (195 *)).

Suitable algae products are, for example, aliphatic, saturated or unsaturated monocarboxylic acids from 10 to 30, preferably from 14 to 22 carbon atoms. Mention may be made of aB, oleic acid, behenic acid-n-btttylaaid, stearic acid-stearylaald. Ee let also SiUgIiOh, instead of the monocarboxylic acids dicarboxylic acids old k to 10 C-atoms for the aaldation einsusetaea, such as succinic acid. Adipic acid, sebacic acid. One then coaats bis * aaiden, for example from adipic acid and diethylaaln aua BIa-M ₉ H * -diäthyladipinaaid. Bine further group of suitable Aaidwaehsen receives "a by reaction of saturated or unsaturated monocarboxylic acids old 10 to 30, preferably Ik to 22 carbon Atoaen old priaären Diaainen alt 2 bia C-6 Atoaen. Among these Aaidwaehsen daa prefers used N, IP-Xthylendiaaln-stearaald.

Since the Aaidwaohss represent polar connections, they are in non-polar solvents such as B. aliphatic or aroaatic Hydrocarbons baw. Mineralules bad, in polar solvents like glycol ethers, higher esters or However, alcohols are readily soluble. It was therefore surprising ale can also be found in printing inks that are exclusive Containing hydrocarbons ala solvent, old success read one. Ss should be surtte charge on it,

109848 / 16U

* *. "2022384

HOB 70 / y 803

da0 u in desi 4 "comparison" polyethylenes or polyethylene * grow small Aufwandaengen no incompatibility · • rschelnw & gon sw watch Bind, The Sinsatsbereich the Aaidwaehse extends custody therefore on virtually all known printing inks.

V In further advantage ₉ to di · Application of A "ldwaohsen as abrasion * and abrasion resistance improving agent brings in printing inks, is that some of these Grow as SB N, N'-Äthylendi» Bia-Steara "id, as a result of your Sprtfdigkeit easily can be converted into very fine powders. These fine powders can be worked particularly well into the printing inks «especially offset and letterpress inks».

Dio Aaidwaehse are used in quantities of 0.05 to 3.0 wt. preferably 0.25 to 2.0 ow.jt, depending on the oesasite color MtSSOf the well-known, water-free printing inks, their ZueasMien setting for example in the book "Printing Ink Manual" 2nd edition (1969) »published by the Society of British Ink Manufactureres is described in detail, cugesetst. You avoid pasty preparations the Aaidwaehsee concerned "it is a" suitable solution ■ ittel »the choice of which depends on the type of printing ink, In some cases, however, the Feinetgepulvorton can also be used Bring waxes directly into the paint.

Printing inks which contain inventive waxes ■ • are worthwhile due to their very good abrasion and scuff resistance like the following examples «actual

^BATH

* ⁵ * 109848 / 16U

HOE 70 / P 8O3

example 1

20 ς of each of the above listed * * aside waxes were ait 8O c ethylene glycol monol ethyl ether sueanBongeschBolaen. The solution was then rubbed on a cooled three-roll mill, the sieve forming a paste. This was sugesetst in menses -from 0.5t, 25, 2.50, 5, 00 "to 10.00 weight- £ of a commercially available" guard-free "gravure printing ink. The color samples consequently contained 0.1, 0.25, 0.50, 1.00 and 2.00 pounds by weight, based on the total amount of each individual sample. The wax-containing printing inks obtained were used to produce prints in a known manner which lasted 72 hours at 20 ^° C. and 65 ° rel. Humidity were stored. A scrubbing test was then carried out on the test prints using the British Standard 3110s1959 method on the PATRA scrub tester.

1 trace of abrasion

2 · little abrasion

3 - some abrasion

km Noticeable abrasion 5 · significant abrasion.

Aaid wax added to the gravure ink

Vachs salary. in the printing ink wt .- ^

0.1

0.25

0.50

1.00

2.00

R-butyl-behenaaid

N, N · -Ä

k 3

1-2

2 1-2

1-2 1

BATH ORIGINAL

HOl 70 / F 803

Example 2

20 β of the Aaidwacase listed below are heated with 80 g of linen oil until a clear solution forms, which are rubbed off in a refrigerated three-orphan's chair. The Pm "te'll analogous to Example 1 of a commercial,""eliafreien Heehdreckfarbe xugeeetst, webei colors old O, I ₁ 0.25. 0.50, 1, 00 and 2.00 wt. With these colors, anal * Example 1 test pads were produced and abrasion tests were carried out.

JLaidwax specified for relief ink

Wax content in the printing ink (wt. "

0.25

0.50

1.00 2.00

W, M «-Xthylenediaain-stearaaid H, Μ · -Athylendiaaln-laurln & Bld n-Buty1-behenaeid

4th
k

3
3

2-3
3

2-3

2-3

2-3 3 3

Be sure that at 0.5% by weight an absolute effect is achieved.

For comparison, a 20-length fast was obtained from a felybylenvaefes voa 'Holgewicht 3000 and linseed oil, as described in Example 1 for the maid waxes. This pasta was made of the same relief ink in quantities of 0.5 $ 1.25 »2 _s 50, 5.00 and 10.00 weight- ^ nt set, so that the resulting print-ready colors 0.1, 0.25, 0, 50, 1, 00 and 2, 00% by weight contained wax, based on the depth of the sowing of the paint. Test prints were made with these colors analogously to Example 1 and abrasion tests were carried out

Polyethylene wax suggested for relief ink

water content in the printing ink (wt

0.1

0.25

0.50

1, 00

2.00

Molecular weight 3000

3-4

ORIGINAL - 7 -

HOS 70 / F 803

Example J

2022384

N, N * -Xthylendiaaln-Stearaaid "sard" d "* rcSa grinding to a grain size <.kOjU / , 20 g of this FaIν®rs were at rauateaperatur to 80 g Xthyigijkol by stirring and the mixture also at rauateaperaturen. inest Dreiwaizenetuhl rubbed down once. The soft paste obtained was sugegefoen in amounts of 0.5, 1.25, 2.50, 5.00 and 10.00 weight pounds of a commercially available, water-based Flex® printing ink. The wax-containing printing inks obtained contained 0.1, 0.25, 0.50, 1.00 and 2.00 wt. Test prints were produced with them analogously to Examples 1 and 2, and abrasion tests were carried out.

Aaid wax added to flexographic printing ink

Vax content in the printing ink (wt. "

q ο, ι 0.25 o, 5Oj i, oo 2.00

K, M '-X thylendiaaln-stearaaid

1-2

For comparison, the same wax-free aqueous flexographic printing ink was given a polyethylene dispersion "according to Belgian" Patent 66k 039> Example 10 "old a dry weight of kO % by weight, in amounts of 0.1, 0.25, 0.50 ₉ 1.00 and 2 , 00 Gev. Using the printing inks obtained containing ethylene, test prints were produced analogously to Examples 1 and 2 and carried out scouring pads.

To the flexographic printing ink se * given polyethylene

Polyethylene content la of the printing ink Weight *)

0.1

0.25

0.50

1.00

2.00

2-3

The example follows from £ K, H · -Xthyloadlaaln * Stearaaid In aqueous Flexoprinting colors tsfirksaaer is more than a weighted PolyMthylendiepereion *

- _:. BAD OBIQlNAL ^

109848/1614 ~ * ~ J

Claims (1)

HOB 7Ο / Γ 8Ο3 patent claims t 2022384 1. Use tob Aaiidwacusen the general Fo A-C-W-I «I
OH was in A either β la aiiphatically more saturated or not more saturated Hydrocarbon radical with 9-29 carbon atoms which corresponds to the grouping -C H_ -CO-SH-R, where η · 2! they 8 «can and R viedena« inen saturated or unsaturated aliphatic Xeltienwaaaeretoffrest stit 2 to 20 C-Atoaon, methyl, or ™ means hydrogen and B either Vaeaeratoff, or an aliphatic line saturated or unsaturated hydrocarbon residue ■ with 10-30 carbon atoms, or the grouping -C ^, -NII-CO-R represents in which η «2 to 6 and R is a saturated or unsaturated hydrocarbon radical 9 to 29 e-Atoflte »1st, as in amounts of from ©, © £ 5-3 wt. success forming Zuaatx xu ink κατ Verboesernnß of abrasion and Abriebfestlgkeit thereof. 2 * Druckfarben ", it improved abrasion and rub resistance, characterized by ™" inen content v @ n from 0.05 to 3 »0 6e * r. ^, Dia besogen on GesaatfarbMasse to Aaiidwachsen the allgeaieinen Porawl O H where A is either an allphatiseher saturated odex * saturated hydrocarbon radical "it is 9-29 C-Afccwsen, or the grouping -CH ₂ -CO-NH-R as &tepz'icht, where η >> 2 htm θ eein and R in turn a saturated or unsaturated aliphatic coblene- OBlGlNAl 103848/1614 hoe yo / w 8 © 3 waeeere'toffr «* t« it 2 bl «2OC-AtMeS, Mtthyl,« der Means hydrogen ead 3 either VaaeerstoiT, tder «ines» llp & * tiecisea ge ~ shaken or unsaturated "It 10-30 C-At # ees" _t or the group "-C H-, -HH-CO-R H. 211 211 ia weieiier η a 2 bie 6 wad E tia ge "% Ttilter or unsaturated carbon water stone" "St" it IO bi · 30 C-Ateaea i * t.