CS251878B1 - Mixture for pencil products' pastel cores - Google Patents

Abstract

Improving the work environment in pencil making production and improvement of writing and triggering properties of pastel cores by adding water emulsion of hardened vegetable oil and refined hard montana wax into a mixture for making cores before it shaping and drying.

Description

251878

BACKGROUND OF THE INVENTION The present invention relates to the composition and preparation of compositions for the manufacture of pastel cores in the pencil industry.

According to the known technology and the composition of the paste core mixture, a conventional kneading device, with the addition of water, is blended with chalk, kaolin, titanium white with barium. pigment and a suitable binder, e.g. cellulose derivative. The mixture thus treated is then extruded to the desired core shape on the extruder. After drying on the drying belt, it is necessary to impregnate these cores, usually a mixture of molten fats and waxes.

This method of production adversely affects the working environment with its entire technological process, both due to the heavy dusting of the mixture and in particular the excessive temperature at the workplace when impregnating the cores in the waxes.

The described disadvantages are solved by this invention. Its essence is the composition and preparation of a mixture for pastel cores, which contains, in addition to fillers, color components and additives, 12 - 27 wt. parts of hardened vegetable oil and 2-12 wt. parts of the hardened hard wax to 100 parts by weight of the composition as a whole. The mixture is prepared by making a melt blend of hardened vegetable oil or vegetable extract and hardened hard mointing wax by mixing 5-10 wt. hot water parts adjusted to pH = 9-14. The thus prepared emulsion is incorporated into the pre-prepared mixture of fillers, colored components and binders. It then monitors the homogenization, molding and drying. The advantage of preparing the composition according to the invention is that the mixture does not dust during the homogenization in the kneading device because the dust components are immediately absorbed by the fat emulsion. triggering effect and more pronounced coloring with high tensile strength. Examples of a particular composition of the invention Example 1 59.50 wt. part of Kaolin Sedlec I. and 13.00 wt. Parts Pigment Orange 5 - C. I.

No. 12,075 2.00 wt. parts Pigment White 6 - C.I.No 77 891 18.00 wt. parts of solidified sunflower oil

2.00 wt. parts Wax LP 5.50 wt. Example Tylose MH-50 Example 2 52.00 wt. parts of Kaolin Sedlec I. and 14.00 wt. Parts Pigment Blue 15 - C.I.

No. 74 160 18.00 wt. parts of solidified sunflower oil

12.00 wt. parts Wax LP4,00 wt. parts of Bermocoll E 230 X Example 3 64.00 wt. parts of Kaolin Sedlec I. and 11.00 wt. parts Pigment Yellow 1 - C.I. NO. 11 680 12.00 wt. parts of solidified sunflower oil

8.00 wt. parts Wax LP

5.00 wt. parts of Bermocoll E 230 X Example 4 45.00 wt. parts of Kaolin Sedlec I. and 19.00 wt. % Pigment Red 4 - C.I. No 12 085 1.00 wt. Part Pigment Red 57: 1 - C.I. No 15 850: 1 27.00 wt. parts of solidified sunflower oil.

3.00 Wt LP

5.00 hmOit. Part Bermloccol E 230 X Example 5 55.50 wt. part of Kaolin Sedlec I. and 15.00 wt. % Pigment Red 57: 1 - C.I. No 15 850: 1 18.00 wt. parts of solidified sunflower oil

7.00 wt. parts Wax LP 4.50 hmlot. part of the Tylose MH-50.

Hard motine wax is obtained by extraction of bituminous shales (in the GDR). In the raw black state, it is supplied to the manufacturer by wax, which cleans it and bleaches it with soda acid and further imparts various properties to it which the raw wax lacks. Thus, different species are obtained for various uses. They are acidic (including Wachs LP), ester, emulsifying, ester-saponified and soft.

Wachs LP, which is used in the examples, has these values:

hr skanutínumber acidity number1 saponification density at 20 ° C

75 - 90 ° C 115 - 130 135 - 155 1.00 - 1.02

Tyloza and Beirmioccoll are cellulose derivatives. Tylose MH-50 is methylhydroxyethylcellulose, Bermioiccoll E 230X is ethylhydrloixylcellulose.

Claims (2)

251878 Kaolin Sedlec I. and used in the examples is kaolin float for industrial plants and has the following composition: fine ceramics- Al2O3 min 36% FesCb and T1O2 max. 1.15% FeaCb max 0.95% T1O2 max 0.30% CaO in leachate max. 0.70% Mesh residue 0 Mesh side size 0.063 mm max. 0.03% MOLD Bending strength min. 1.2 MPa Solidified vegetable oil (eg sunflower) is white to slightly yellowish in color and has the following physical values: number acidity number saponifinate clarification 190—220190—22050— 65 ° c invented CLAIMS 1. A composition for pastel cores of pencil-shaped articles comprising fillers, colorants and binders, characterized in that it still contains 12-27 wt. parts of hardened vegetable oil and 2-12 wt. 100 parts by weight of the composition of the solid pellet wax. 2. Process for the preparation of a mixture according to claim 1, characterized in that emulsions are prepared from the molten mixture of hardened vegetable oil and hard montan wax by mixing 5-10 wt. parts of hot water, adjusted to a pH of 9-14, and the emulsion thus formed, are added to the preformed mixture for pastel cores prior to molding and drying.