DE1669111C - Water-soluble writing fluid for a felt-tip pen - Google Patents

Description

The invention relates to a water-soluble writing unit which is coated with a rolling oil. The writing liquid for a. Writing implement with felt wick, which should be used for marking through normal water-treated sheet steel, which is coated with a film of oil, treatment to which the steel is subjected in order to transcribe the oil and with an aqueous material after washing, be easily dissolvable. After such a

Lettering can be removed. 5 water treatment, the steel is treated with a primer

It is particularly important for the rolling industry to be coated with a varnish or paint.

To have inks for writing implements that are based on metal. According to the invention, a writing fluid

surfaces, which are covered with a rolling oil film, created a combination of chemical

are described and "contains substances that are removed with water. The mixture contains silicon dioxide,

be able. io to avoid precipitation and that

Usual writing implements with water-soluble writing-adhesion of the writing liquid to the oily metal liquid can make it easier to write on metal surfaces. As a preservative Carbolic acid is not used on surfaces covered with an oil film. · Polyethylene glycol is used because the writing fluid is used by it to the writing tip of the writing instrument on is repelled. On the other hand, it is possible to prevent dehydration and to make it possible knew writing implements whose writing fluids easily wipe the writing fluid without a are not soluble in water, leaving marks on metal surfaces to smudge, being write that are coated with an oil film, the latter in collaboration with Ethylene Glycol Monodoch These labels cannot easily be made with ethyl ether or anionic surface-active co-water removed. ao teln is effected. Ethylene glycol monoethyl ether or

Writing fluids that are anionic surfactants from the metal surface are used, with the help of a solvent, with the exception of around the writing fluid smoothly from the writing tip Water, removed, leaves a film or the felt-tip pen on the metal surface Trace, which is worth painting or some other. It also helps to dry the writing the surface onto which the ink is applied and improves the permeability of the was brought would be detrimental. Writing fluid on the written material.

It was thus a water-soluble writing liquid- Furthermore, it creates an affinity for oil, so that you can create speed with which small letters can be applied to the surface of a flat lettering on such metal surfaces can see plate that is coated with oil.
and which are removed with an aqueous material. However, to prevent such writing fluid precipitation, casein is used. Which are not used for marker pens, since casein is used as a fixative, it did not flow to the writing tip, but instead led to clogging, which is important for the writing fluid according to the invention. Furthermore, the writing fluid, in particular, known fixing agents such as from the metal surface cannot be removed at the same time as the starch, natural resins, synthetic resins, rubber washing operation of the oil film. arabic and alkali silicates, not the goals of the invention

British Patent 663,918 relates to achieving printing. The writing fluid, the strength or

inks that use modified ethylene or natural resins as binders are produced by the rolling oil

Contain terpene resins and which are only repelled by exposure, so that the inscribed markings

heat or steam on the 4 "to be printed are difficult to read. Furthermore, these

Pull up the object. They also contain water marks not caused by a detergent, which

dispersible detergents and nonionic and alkaline detergents as main ingredients

surfactants of a considerable odor- sodium metasilicate, sodium acetate and a low

nuisance for easier cleaning of the print quantity contains sodium hydroxide solution, which after the

machinery. Furthermore, these printing inks contain 45 international washing methods when used

including polyglycol and glycol ether as Lö- mineral oil under conditions of below 3 atmo-

solvent. Spherical pressure and is to be washed ^{below 70 0 C,}

The invention therefore relates to a water-soluble removal. The writing fluid, which is a syn-writing fluid for a fibrewriter on the thetic resin it will diverge and Base of coloring materials, silicon dioxide, 50 decompose. The writing fluid, the rubber polyethylene glycol, Ethylenglykolnionoäthyläther or arabic contains, is with the rolling oil and the acanionic Surfactants and binders react; therefore it cannot be used as a means, which is characterized in that the writing-writing fluid are used. The writing fluid contains casein as a binding agent. liquid that contains alkali silicate is made by rolling oil

It is an object of the invention that the writing 55 be repelled and the written characters become

liquid through the felt wick core of a writing system will be difficult to read. A writing fluid that

device can flow without the capillaries of the felt core contains casein, does not have these disadvantages,

to clog and without the writing fluid on. The writing fluid according to the invention is obtained,

the tip of the writing instrument dries up. by using the special materials mentioned above

It is a further object of the invention that the 60 be written according to the following examples

Writing fluid no film or residue mixed behind,
leaves that would be harmful to painting or to one

other treatment of the surface on which the writing Example 1
liquid has been applied.

An example of the usefulness of writing 65 White ink
Liquid for the writing instrument is evident when marking rolled sheet steel, as it is in the automobile industry. The mixture is produced separately and used in the automobile industry. This type of steel is finally mixed.

The first mixture a is composed of titanium white, silicon dioxide, calcium carbonate, and polyethylene glycol and casein solution. All parts are based on weight.

materials

materials Preferred
amounts Area Titanium white
Silicon dioxide ..
Calcium carbonate
Polyethylene glycol
Casein soluble ... 13 parts
6 parts
ITeil
12 parts
8 parts 11 to 14 parts
4.5 to 6.5 parts
0.8 to 2 parts
6.5 to 12.5 parts
7 to 12 parts

materials Preferred
amounts Area Casein solution ...
Ethylene glycol
monoethyl
ether
Carbolic acid 20 parts
2.5 parts
0.05 parts 16 to 21 parts
2 to 2.7 parts
0.04 to 0.07 parts

The second mixture b is composed of casein solution, ethylene glycol monoethyl ether or surface-active Agent and carbolic acid.

a) soot

Silicon dioxide

Polyethylene glycol ..
Casein solution as in

example 1

b) Casein solution as in

example 1

water

Ethylene glycol monoethyl ether. '

Carbolic acid

Preferred amounts

4th
1
4.5

22nd 5

2.5
0.05

Area

3.5 to 4.5

0.8 to 1.5

4 to 5

9 to 11

21 to 23

4.5 to 5.5

2 to 2.7

0.04 to 0.1

Example 3 Red Ink

The mixture is prepared as in Example 1 to produce a red colored writing fluid with the following components:

The casein solution is composed of 13 parts of casein, 8 parts of borax and 230 parts of water.

Instead of the ethylene glycol monoethyl ether, a other humectant, e.g. An anionic surfactant can be used. A suitable one Surfactant is prepared by adding 1 gram of sodium alkylbenzenesulfonate to 500 grams of water. In this Example 1, 2.5 parts of surfactant can be used.

Mixtures a and b are then mixed together in a ball mill and passed through a sieve with a clear mesh size of 0.044 mm happened. The resulting product is a liquid white writing fluid. It creates a white color that does not peel off.

Example 2
Black ink

The mixture is prepared as in Example 1, but using the following components (parts by weight):

materials Preferred
amounts 1 Area a) red dye (Color Index No. 12 335) 1.5 3 up to 2 Watchung red 1 (Color Index 3 No. 15 865) 3.5 to 4 Silicon dioxide 3 11th up to 3.5 Polyethylene glycol .. 4th to 4.5 Casein solution as in 17th example 1 15th until 18 b) Casein solution as in 1 example 1 20th until 24 Ethylene glycol mono ethyl ether 1.5 up to 2 Carbolic acid 0.05 0.04 to 0.06

Claims (1)

Claim: Water-soluble writing fluid for a felt-tip pen based on coloring materials, silicon dioxide, polyethylene glycol, ethylene glycol monoethyl ether or anionic surface-active agents and binders, characterized that the writing fluid contains casein as a binder.