DE1933338A1 - Color body - Google Patents

Description

PATENT ADVOCATE

DIPL-INQ. LEONHARP HAIN

To the 8 MUNICH 2

VAL 18

Federal patent authorities RUF: 0811/29 47 98

8 Munich 2

~ 7— 6/27/1969 H / m

File number

Applicant: Harrison Mayer Limited, Stoke-on-Trent, Staffordshire, Great Britain

Color bodies

The invention relates to a yellow color body which, when dissolved, contains a mixture of titanium dioxide and a barium compound which, when heated, _{results in barium oxide in a molar ratio of Ba 0. Ti 0 "- Ba O. η Ti O 2} , where η is a number up to 20, and Nickel oxide or a compound which produces a nickel oxide on heating is obtained at a temperature in the range from 1100-135O ⁰ C if the amount of Ni O in the roasted mixture does not exceed 20% by weight.

The color body has a strong yellow color with a maximum reflection effect at a wavelength of about 5H0 Mu /. It is available as glaze color, glass enamel color and Ceramic tested as underglass color and found to be stable been. It can also be used as a yellow color body for plastic things, where it is good chemical and shows light resistance. The color body can also be mixed with colors.

™ * M "™"

BANKi BAYER. MORTGAGE AND EXCHANGE BANK MUNICH, THEATINERSTR. 11, ACCOUNT NO, 3 437370 POST CHECK ACCOUNT »MUNICH. 1S443 iT | LfQg ₁ -APRESSJi PATENTDIENST MUNICH

inspected

A yellow nickel-titanium-antimony stain is known and is also used similarly. The color body according to the invention, however, has a green tint of yellow and the cost of the material needed to make this color body is only about half.

This is from the spectrophotometric curves of the enclosed Drawing can be seen in which the percentage reflection effect as ordinate and the wavelength as Abscissa values are recorded. Curve A indicates a conventional nickel-titanium-antimony color body which by roasting a mixture of 20 parts by weight of antimony trioxide, 62 parts by weight of titanium dioxide and 12 parts by weight Nickel carbonate was obtained. Curve B shows the result of Example 1 given below.

The yellow coloration is extremely intense with a high titanium content, in particular with a molar ratio of Ba 0. 4 Ti O ₂ . The yellow color is achieved with a very small amount of Ni 0 and increases its brightness and intensity with increasing Ni O content up to a maximum of ± Q% Ni 0. With a higher Ni O content, the yellow becomes darker and less bright and at 15% Ni 0 it even becomes dull. The nickel oxide content is preferably 5-15% by weight, regardless of the ratio of Ba 0 to Ti Og.

The yellow color begins slightly at a roasting temperature of 50 ° C and its intensity increases as the temperature rises. The best results were achieved with heating to 1250-130O ⁰ C. If the mixture is roasted at a temperature above 135O ⁰ C, the mass sinters to a hard lump that is not easy to break.

In the following examples, the information relates to Parts by weight.

009818/1457 - 3 -

- 3 -
example 1

The following materials were mixed thoroughly and roasted for ^{one hour at 1250 0 C:}

Barium carbonate 38 parts

Titanium dioxide 62 "

Nickel oxide 10 "

giving a light yellow powder. This was washed with hot water, ground and passed through a 200 mesh sieve sifted out in a ball mill, whereupon it was then dried.

5 parts by weight of this powder were added along with 100 parts by weight a white opaque glaze of the following composition wet ground:

SiO ₂ 55 Parts by weight ZnO 4 Ge gave way Al ₂ O ₃ 12th Il ^B 2 ° 3 9 Il CaO 5 Il ZrO ₂ 9 Il Na ₂ O 6th Il

When this mixture was applied to an unglazed ceramic tile and heated to 1050 ° C, a glossy was created zende key & lflower yellow glazed surface.

Example 2

The following materials were mixed thoroughly and a stu

heated:

for one hour at a temperature between 1200-1300 C.

Barium carbonate 30 parts titanium dioxide 6 () " Nickel carbonate 10 "

009 * 18 / 145-7

A pale yellow powder resulted, which was washed and ground in this way was allowed to pass through a 200 mesh screen of a ball mill, whereupon it was dried and continued ground to an average size of 0.5 microns according to the electron micrograph. This powder was in different percentages that range between 0.5 · to 3-0 70 weight layers, polyester resins, polyethylene and polyvinyl chloride plastisols. In all cases a light yellow opaque product resulted. At the Diluting with titanium dioxide resulted in different tones of primrose yellow and dark ivory. The colored ones Plastic samples made in this way were opposite Light, acid and alkaline solutions are exceptional resistant.

Example 3

The following mixture of ingredients was heated for one hour at i2 ^l j0 G to produce a light yellow powder.

Barium carbonate 28 parts

Titanium dioxide 55 "

Nickel phosphate 17 "

After the washing and grinding organs were 7 parts by weight this powder was added to 100 parts by weight of a conventional white opaque glass enamel; when heated on iron this gave a pleasant cowslip yellow coating.

The roast was also sprayed onto a ceramic plate and with a conventional transparent glaze of the following molecular composition covered:

009818/1457

O. 25th FdO 0. 4th Al ₂ O ₃ 0. 30th Na ₂ O 0. 5 B ₂ O O. 45 CaO

3.6 SiO ₀

After firing at 1080 C, the part of the ceramic plate that was treated in this way turned a light yellow shiny color.

Example 4

The following mixture was ^{fired at 1250 °} C. for one hour and gave a light yellow product:

Barium carbonate 71 parts titanium dioxide 29 "nickel oxide 10"

After washing with hot water, the product was ground for a 200 mesh sieve and dried.

10 parts by weight of this powder and 10 parts by weight of zirconium silicate were ground with 100 parts by weight of a lead-free glaze, the composition of which is as follows Molecular formula corresponded to:

0.309 Na ₂ O

0.195 K ₀ O 0.482 Al ₀ O, 2.87

0.496 CaO 0.474 B _o 0 "

2 3

The glaze color obtained in this way was sprayed onto a white ceramic tile and browned for one hour at 1060 ° C, to create a pleasant ivory glazed tile.

Example 5

The following mixture was milled and held for one hour

Fired at 125O ⁰ C:

^009818/1457 BADOR ₁ GINAl

Barium carbonate 27.3 parts titanium dioxide 62.6 "Nickel carbonate 10.i"

The result was a cheap yellow powder which took on a pleasant yellow hue when it was flax ground and was added at 3 parts by weight to 100 parts of a polyester resin.

In Examples 1-3 the molar ratio of BaO and TiO "is approximately 1: 4, while in Example 4 it is 1: 1. Example 5 gives a product with a molar ratio of 2 NiO. 3 BaO. 17 TiO ₂ emerges.

A number of the color bodies experimentally prepared according to the invention were tested by X-ray diffraction and in all cases a predominant lattice formation according to a distorted "Priderite" structure with a composition close to 2 NiO was observed. 3 BaO. ± 7 TiO "found. Priderite is a mineral with a specified composition (K, Ba) ₁ '(TiFe) ₈ Og

009818/1457

Claims (5)

- 7 - Claims: 1. Yellow Farljkörper, characterized in that it is made of a treated at a Teiaperatur in the range of 1100-1350 C Itöstgut from a mixture of titanium dioxide and a Bariuyverbindüng _s which when heated barium oxide in the _{molar ratio Ba 0. Ti O 0} - Ba 0. η gives Ti O, where η is a number up to 20, and consists of a nickel oxide or a compound which gives nickel oxide on heating, the amount of Ki 0 in the roasted mixture not exceeding 20% by weight. 2. Color body according to claim 1, characterized in that the Ni O content in the roasted mixture is 5-15% by weight amounts to. 3 color bodies according to claim 1 or 2, characterized in that the ratio of barium oxide to titanium dioxide is 1 to k . 4. Color body according to one of claims 1 to 3> thereby characterized in that it consists of a mixture roasted at a temperature of 12 | 50-130 ° C. 5. color body according to claim 1, characterized in that that it has a composition according to one of the exemplary embodiments. 00981 8 / U57 BATH ORIGINAL % 9 L e r s e i t e