CZ818888A3 - cleaning agent containing basic salts of chromium - Google Patents

Abstract

tanning agent containing basic chromium salts with the case * content of substances gradually weighing acidity up to 10% weight in dry matter of the product, characterized in that contains a stabilizing agent of formula I wherein n = 2 to 6 and wherein u two adjacent hydroxyl group carbons do not matter at the relative position of -OH groups and wherein R 1, R 2 is: -H or - COOH or -COH or -CO-CH 2 -OH or -CmH 2m + 1 or -CmH 2m-t or -CmH 2m-10 and wherein m 1 is 1 to 6, v an amount of 0.05 to 3 moles per mole of chromium contained in the melt; mixtures.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

The tanning agents used hitherto are produced in aqueous chromium salts by alkaline alkalis or as reaction products resulting from the reduction of hexavalent chromium salts in the presence of sulfuric acid with the addition of masking agents such as formic, citric, or jgluconic, malonic, acetic, lactic acid. , oxalic, phthalic, or readily soluble salts of these acids · These substances are usually hardly available or costly for these purposes

Said disadvantages of the chromium compositions used hitherto are eliminated by a tanning agent according to the invention containing basic chromium salts with an optional content of substances gradually increasing acidity of up to 10% by weight in the dry matter of the product, characterized in that it contains a stabilizing agent of formula adjacent carbons with a hydroxyl group 3 does not matter relative to the position of the -OH groups and where it may be: -H, -COOH, -00-0¾ OH, -0H0, keto-carbon chain), (saturated carbon chain), -O _m H _{? rnj > 1} (carbon chain with one double bond), wherein m = 1 to 6, in an amount of 0.05 to 3 moles per 1 mol of chromium contained in the mixture. Such a tanning agent exhibits the properties of stabilized chromium slurries when applied. These stabilizing agents may be combined with known masking agents.

This tanning chromium preparation can be used in all tanning operations using mineral tanning agents * ch4—

The compositions of the present invention are illustrated by the following examples.

Example. 1

In a stirred and heated vessel, dissolve in 100 parts by weight of water, 10 parts by weight, parts of chromium-blue alum, after dissolving the alum add 60 parts by weight of parts of xylose waste syrup (40 parts by weight of xylossa) 1 liter by weight * parts of sodium carbonate · This floated product Can be applied in the liquid state, dried and spray dried ·

The product contains t, 35 tables of stabilizing substances per mole of tremendous ·

Example 2

In a stirred vessel with the possibility of heating, dissolve 100 parts of crystalline chromite sulphate or octadecahydrate in parts by weight of water. It mixes 25 guests in parts of glycerine to aer spacing. The resulting powder is conveyed to a mixing silo where 5 parts by weight of MgO waste pellets are added, the silo content is mixed to equilibrate the dispersion of the MgO * pellets in the fennel. ·

Product contains 1 mole of stabilizer with 1 mole of tremendous ·

Example 3

Dissolve in 100 haotaz in a duplex enamel reaction vessel with stirring and reflux condenser. With 100 parts by weight of water, 100 parts by weight of sodium bicarbonate, add 100 parts by weight of sulfuric acid. After mixing, slowly add about 50 parts by weight of beet sugar as 40% by weight. Add the eukr solution to the negative reaction of dlsnynyl-carbaalde to Cr3. Add the molasses to the solution to make the preparation 84 parts per million molasses (50% w / w, saoharose). Dry the solution in a spray drier and transfer the resulting powder to a silo to which it is added, to which 8 mass parts of MgO pellets waste from cellulose production are added. Homogenization of this mixture resulted in a chroedt boat with a self-pilling float »The product contains 0.3 mol of stabile compound per mole of tremendous ·

Example 4

In the stirred vessel and the heating system, the dissolution of the 10% mass. parts of the stove. water.

Pa roepultlnl kee * aw add f touch «v. parts of formic acid (85%) and 18.7 parts by weight of glucose. The solution is continuously added and mixed with 16.5 parts by weight of carbonate and mixed. The product thus obtained is modally apt. Forged in a liquid state to the spraying alames.

Product contain · 0,5 «1 stzbUlsBxjlol substances per 1 defense ·

Example. 5

In lying down containers! and the possibility of heating by dissolving 647 flushed parts of cassian · chromite blue in 600 haotiv.dlleah water ·

Adds 99 wt.% Of ootsyric acid (99 wt.%) And 133 wt.% Of the oil. The solution was further added and the disintegration of 11 parts of sodium carbonate. The product can be spilled in liquid * atav * n * b * it lz * uaullt for spraying aula * ·

Prodxkt containing 0.55 mol and content of substance per 1 ml of ech ·

Example 6

T 16 a? Dissolve 7500 kg of potassium-potassium horses in 5,000 kg of water, after dissolution of TroMn, add 729 kg of formic acid (35% by weight) and 15 ° kg of beet oxoxxy. Stirring solution by basilica * successive * addition * & τηση · / μ 1625 kg of anhydrous sodium carbonate · The product thus prepared can be applied directly or uaullt in a spreading powder and applied in powdered state ·

The composition contains 0.055 moles of substance per 1 salt ·

Claims (1)

PATENT CLAIM! A tanning agent containing a basic 3ole of chromium 3 with an optional content of substances gradually binding acidity of up to 10% by weight in the dry matter of the product, characterized in that it contains a stabilizing substance of the formula I H. CH OH - R> n adjacent atoms, -OH groups hydrcxylovou position, and wherein the or -CO-CH 2 -OH or -C _{m H? He} or _ ₁ and wherein m »1AZ 6 0.05 contained in the composition». cr? where n = 2 to 6 and where two » the group does not matter vzájemné -H or -COOH or -COH or ⁰ to 3 moles per mole