LU82084A1 - AQUEOUS FLEXO PRINTING INK - Google Patents

Description

η. 50,976

-- " ....... GRAND DUCHY OF LUXEMBOURG

- Al) β £.

du -I, .5 ..... jc.r,. "vleX ..... 19E.O Monsieur the Minister of National Economy and Move Classes

Title issued: ........................................ R »W

Industrial Property Service

___ - LUXEMBOURG

Invention Patent Application I. Request ... L £ ... n / a $ .ty ..... jâlfee ..; .......... 1. 5.42.9 ..................................... (1) ... MlSKLEiv, .. .Allßiaagne ..... FM & ale, ..... representing M. ..... Jacques ..........

~ d £ .Jäu.y.sar., acting .._. in .... giî ", jeæ pda taire ..................... .................................................. ....... (2) deposit ........ ce.-Αα1ΐΐζ £ -4.Εηνΐ £ Γ ... 29οο. Eighty ............ ................................................ <3 ) at ................... hours, at the Ministry of National Economy and the Middle Classes, in Luxembourg: '1. this request for obtaining a patent for an invention concerning: ..- "Ks.ssr.ige ..... FlexQfiruGkfarbe" ........................... .................................................. .................................................. ............................... f4) declares, assuming responsibility for this declaration, that the inventor (s) (s) is (are): - .. Ksuraer. ..ILLEE., ...... Incug .triegeMet. / ...... 1 ..... 5.4.29 ..... KI1HLEK * ..... Allessagns ........................... (5) .. Federal .......... .................................................. .................................................. ................ .................................................. .................................................. .........

2. the delegation of power, dated ...... KIlKIlK .............................. on ... il ..... j ^ y »S. description in language ......... aij.eC'aiiC.â .................. ............ of the invention in two claims. : 4 ....... U .............. ... drawing boards, in two copies; 5. the receipt of taxes paid to the Luxembourg Registration Office, ...... 15 = v / Lr-vL. sr .. .1.9..9-.c ....................................... .................................................. .................................................. ..........................................

claims for the above patent application the priority of an ides) applicants; from (6) .............................................. .................. deposited ”in (7> ... AI ISMi υπ: £ .... α.§.η.§X..§ ... ............................................

in the name of ~? Ç & ............................................ .................................................. .................................................. ......................................... (f, takes up residence for him (she ; and, s: appointed, for its representative, in Luxembourg -...........................

... 1, hf blue ·· -Hc.us.1 ................................... —................................................. .................................................. .................................................. .......... uo requests the grant of a patent for the invention for the subject described and represented in the appendices: above-mentioned, - with postponement of this grant to ...... 1.1 .. .................... ..... months.

"w K. Proeès-verîtal de Dépôt

The aforementioned patent application has been filed with the Ministry of National Economy and the Middle Classes, Industrial Property Service in Luxembourg, on: Ί 5 ξ ~ - - ut ”/ · Λίτί ** είΐ ' ; ,:. To \ Pr. The Minister at ......... £ 5 .............. hours lx ^ Ci '06 the National economy and the Middle Classes.

"-P i u; '"*. ·? E. P · d.

COS'D:! i ^ f / 1: ** _______ y. f'-g- Φ _________________ OC 50.976

BEANSPRUCHUNG DER PRIORITÄT

der PatenUOW /. - Anmeldung

! IN: DER BUNDESREPUBLIK DEUTSCHLAND

! Vom: 5. FEBRUAR 1979 ’i TÄXXxw |

PATENTANMELDUNG

in

Luxemburg

Anmelder: Werner kapp I! Betr .: "Wässrige Flexodruckfarbe”.

! Der Text enthält: j Eine Beschreibung: Seite 3 bis 8 I gefolgt von: iij Patentansprüchen: Seite 1 bis 2 -? ' i 8 t L '\; ;

Claims (1)

¥ - 2 - "Claims: 1 *) aqueous' flexographic printing ink, characterized in that the same as a mixture of a) 50 to 80 wt .-% water; b) 0.5 to 2.5% by weight of thickener, preferably from acrylic acid polymers; c) 0.1 to 0.4% by weight of 25% ammonia; d) 1 to 35% by weight of methanol or ethanol; e) 1 to 10% by weight of glycols or their esters; f) 0.05 to 0.3% by weight defoamer; j g) 1 to 20% by weight synthetic resin dispersions or their! Copolymers, such as styrene, ethylene, propylene; Vinyl acetate polymer as a binder, and v h) 1 to 35% by weight of organic or inorganic i; Color dough, also in powder form. 2.> Aqueous flexographic printing ink according to claim 1, characterized in that 0.5 to 2.5% by weight of bentones, bentonites or natrosols (methyl celluloses) are added to the ink as thickeners. / 'h ’t-. / \ / '\: r / * \ -X' ** .__ \ f N- ^ ^^. »'! - 3 - \ The invention relates to an aqueous flexographic printing ink · "· Colors of the type mentioned are required when using the flexographic printing process. These are colors that must be adapted to the special conditions of this process." Print does not stick or stick to the clichés, · · '»(·, These flexographic printing stains are mainly used for printing on kitchen rolls, napkins, table mats, towels or the like made of paper, which are used frequently in the home« For this reason the colors used here can also be used safely in relation to the provisions of the Food Act. "V i Flexographic printing inks are already known. However, these colors have the disadvantage that they are either not alkali and alcohol-resistant and / or" »1: 'none have good printing properties «/ ** i..-4-. · 4 \ 4 'f! So it can happen that the previously known 'color detaches itself from the paper towels and reaches, for example, the hands of the housewife and from there into the:' prepared food, so that eating these foods can adversely affect your health · There are also colors that differ for example, on the rollers of the printing presses, and create an adhesive effect, which greatly affects the running properties of the presses. Or, but the color does not come off the clichés, but sticks to them, which results in poor print quality and ultimately * damage to the clichés. The object of the invention is to provide a flexographic printing ink of the type mentioned at the outset which avoids the disadvantages of the known colors. In particular- i v | 'In particular, the color should be alkali-resistant, resistant; * Against fats, oils, soaps, alcohol, acetic acid milk | I ·. . be acid and thus meet the provisions of the Food Law. In addition, the color in the printing press should be easy to process and f / L-. ! ... - 5 - be inexpensive to manufacture. This problem is solved by an aqueous flexographic printing ink which consists of a mixture of a) 50 to 80 wt .-% water; b) 0.5 to 2.5% by weight of thickener, preferably * from acrylic acid polymers; c) 0.1 to 0.4% by weight of 25% ammonia; d) 1 to 35% by weight of methanol or ethanol; e) 1 to 10% by weight of glycols or their esters; f) 0.05 to 0.3% by weight defoamer; g) 1 to 20 wt .-% synthetic resin dispersions or their copolymers, such as styrene, ethylene, propylene, vinyl acetate polymer as a binder, and h) 1 to 35 wt .-% organic or inorganic * · | Color doughs, also in powder form. \ \ The flexographic printing ink produced according to this recipe is water and alkali resistant, resistant to fats, i% oils, soaps, alcohol, acetic acid, lactic acid, i.e. h., | . it corresponds to the food law. It is therefore particularly suitable for printing on Kü- # *. 'Paper rolls, napkins, table mats, towels, etc., etc. / "I. In addition to the special fastness properties, the color according to the invention also has particularly good machine running properties. The invention advantageously provides for the use of an aqueous synthetic resin dispersion as a binder which, in the form stated, is probably so with low alcohols as with high boiling point that can be mixed without failures or deletions. By adding higher alcohols, such as glycols or their esters, the advantage is achieved that the ink on the printing rollers of the printing area! ! can not dry out, as they are able to solve the colors. On the other hand, the synthetic resin dispersion after printing and drying the ink is, among other things, waterproof and resistant to any of the alcohols found in households. ! . An important component in the color mixture according to the invention is also the use of acrylic! acid polymers as thickeners and the er | inventive conversion of the same using ammonia J to ammonium 1 ί ~ <n »! ) A .1, ·· 7 m • s. . . zen dar # This gives the advantage »that the thickener is miscible in all proportions with all other components, especially; . 1 ; with the alcohols, glycols and the dispersion. However, this material also has an increased effect in synergistic Sinz, since it also improves the print image and acts as a lubricant on the rollers: and the ink does not settle «* 'P ·' '. . ; . In a further embodiment of the invention, materials such as lantone, fj bentonite or catrosols can be used as thickening agents. However, these * *. ·· materials do not quite achieve the above; partial properties that with acrylic acid epoly- ii! , Merisates of the type mentioned are achievable «». · Ff i u The components from which the color according to the invention is composed and their minor | ’* Dry matter, in their combination result in an î; Color that meets all requirements with regard to durability and workability and that also has an increased effect in a synergistic sense with regard to its properties. i. / Λ! iu. 4 V ·. 1 ί. ; - 8 - I ·.,% Λ ·. In particular, the color according to the invention is achieved through particularly fine coordination between thickeners, alcohols, high boilers and the dis. As a binding agent, persion can be adapted to the individual machine types used, which means that the ink according to the invention, in addition to its good properties with regard to its durability, enables optimum printing properties to be achieved. t * · * «f>« «4 '*% i * i' · i. J r I.