CS237182B1 - Powder-like auxiliary chemicals with reduced dustiness based on synthetic tanning substances or their constituentsPowder-free auxiliary chemicals with reduced dustiness based on synthetic tanning substances or their components - Google Patents

Abstract

The invention consists in that they contain 0.05 to 8% by weight of a substance of the general formula I, where K = H-, -O-/CH2CH2O/n-H where η = 1 to 10 L = H-, alkyl /C^ to Cj2/{ -C00R where R is alkyl with up to Cg Μ = H-, -C00R where R is alkyl with up to Οθ, optionally 0.1 to 8% by weight of sulfated vegetable oil or 0.1 to 8% by weight of triethanolamine or 0.1 to 8% by weight of silicone oil or 0.1 to 8% by weight of polyethylene glycol or 0.05 to 8% by weight of tall oil.

Description

The invention relates to powdered adjuvants with reduced dustiness.

A number of pulverulent substances are produced in the chemical industry, which are heavily dusted during production, drying and handling, which is undesirable in terms of both the working environment and material losses. An important group of these products are chemical auxiliaries used, for example, as synthetic tanning agents, for geologic well drilling, exploration, plasticizer concrete mixtures and the like. These substances have different chemical structures, eg based on sulfonated or unsulfonated phenol- or cresolsulfone polycondensates. They often contain additions of other substances such as sulphite leaches, dyes, metal salts, etc. This mixture of substances used as an auxiliary chemical agent for various purposes, drying or drying. during handling after drying, during bagging, during transport, during technological application it is very dusty. This high dustiness causes, on the one hand, severe contamination of the workplace, causes considerable environmental problems, inconveniences to the working staff, increases the incidence of occupational diseases of respiratory, skin, allergic, etc. It is necessary to work in protective equipment. The loss of the product is also significant. The solution to this problem is made more difficult by the fact that the addition of the dust control agent must not interfere with the good applicability of the chemical auxiliary agent, nor must it discolour the material to which the composition is applied. The reduction in the dustiness of the chemical substance must be either permanent or at least lasting for a longer period of time.

Some manufacturers solve this question by constructing suitable drying ovens and hence adjusting the drying, which is economically and costly to produce. The invention relates to a reduced-dusting auxiliary chemical composition comprising from 0.05 to 8 wt. compounds of formula I,

237 182

where Κ = H-, where

L = H-, where

Μ = H-, where

-O- (CH ₂ CH ₂ O) _n -H η - 1 to 10 alkyl / C 5 to R 7 is alkyl with -COOR

R is alkyl

C ₂ /, -COOR ° ^C 1 ^to C 8 to C.

This can be modified so that the reduced dust adjuvants further contain 0.1 to 8 wt. A similar effect is obtained by adding 0.1 to 8 wt.% of a sulphated vegetable oil such as castor oil, sunflower oil, linseed oil, rapeseed oil and the like. % silicone oil, body oil or 0.1 to 8 wt. triethanolamine.

Suitable substances for the non-dusting treatment of chemical auxiliaries, alone or mixtures thereof, are, for example, the following: sulfated or unsulfated vegetable, animal oils, e.g. castor, sunflower, rapeseed, linseed, talc, silicone oil, esters of aromatic acids, e.g. m, p-phthalic esterified with an alcohol having a carbon number of C 1 to C 8, aromatic hydrocarbons having an alkyl chain number of C 3 to C ₁₂ , reaction products of phenolic nature with an oxafane of Slovafol type, nonionic surfactants of Slovanik type. In some cases, the reduction in dustability is achieved by the addition of amines, for example triethanolamine.

Said composition may also be dosed during manufacture of the chemical auxiliary.

The invention is illustrated by the following examples.

- 5 Examples

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A) The base tan was prepared by adding 461 g (4.6 mol) of 98% sulfuric acid and then 468 g (5.246 mol) of naphthol to a 2.5 L sulfonation flask. Sulfonation was carried out at 115 ° C for 2 hours. The product was cooled to 55 ° C, then 97.8 (1.03 mol) / phenol and 248 g (2.97 mol) / 38% formaldehyde diluted with 100 ml of water were added. The pH of the reaction product was adjusted to pH 10 with 10 N NaOH solution

3.5 to 4.

B / 167 g (1.63 moles) were charged to a 2.5 liter sulfonation flask.

96% sulfuric acid and after heating to 110 ° C in portions with stirring

201.5 g (1.4 mol) of naphthol. The sulfonation temperature was 115 ° C, the sulfonation time was 3 hours. 300 g of diphene fraction (AO 160 428) and 100 g of sulphite liquors were added to the reaction mixture. The temperature was lowered to 60 ° C and then 218 g (1.38 mol) of 19% formaldehyde was gradually added over 30 minutes. The temperature was raised to 65 ° C and condensation was carried out at this temperature for 3 hours. During the condensation, the reaction mixture was diluted with 110 g of sulphite liquors and a total of 60 ml of water. The pH of the reaction mixture was adjusted to 3.5 with NaOH solution.

0/130 g of the sulfonation mixture obtained by sulfonating phenol with 96% sulfuric acid at a temperature of 110 to 120 ° C were weighed into a sulfonation flask. To this mixture was added 136 g dimethylolurea and 10 g urea. The reagents were stirred and heated to 60 ° C for 3 hours. After cooling, the pH of the reaction mixture was adjusted to pH 5 to 5.5 with ammonium hydroxide solution.

D / In a 1000 mL flask was heated with 600 mL of water and 75 g of sulphated castor oil to 75 ° C. 7.5 g K 2 S 2 O 5 and 119 g 82% acrylic acid were added under stirring and under a nitrogen atmosphere. The polymerization was carried out at 97 [deg.] C. for 2 hours. The product is water soluble and pH = 3.65.

Example 1

Ke 100 wt. parts of product A were added during mass condensation. parts of dibutyl phthalate. After drying in a spray drier, the product shows a strongly reduced dustiness against the control sample.

- 4,237,182

Example 2

Ke 100 wt. 5 parts by weight of product A were added during the condensation. parts of sulphated castor oil and 1 wt. part dodecylbenzene. After drying, the product exhibits a greatly reduced dustiness against the control sample, while the tanning agent thus prepared exhibits a further advantageous property and that it simultaneously introduces a liquor component into the leather.

Example 3

Ke 100 wt. parts of product B were charged with 4 wt. parts of Slovafol 910 (ethoxylated nonylphenol) and 0.2 wt. parts of triethanolamine. After drying, the product shows a strongly reduced dustiness against the control sample.

Example 4

Ke 100 wt. 0.05 parts by weight of product A were added during preparation. parts of dodecylbenzene and 4 wt. parts of sulphated rapeseed oil. The product shows a strongly reduced dustiness.

Example 5

Ke 100 wt. product parts. B, after completion of the synthesis at 50 ° C, 2 hmbt was added with stirring. parts of dioctyl phthalate and 4 wt. parts of polyethylene glycol. A product with reduced, dustiness over the control sample was obtained.

Example 6

Ke 100 wt. parts of product A during synthesis at

^Q C introduced 2 wt. parts by weight of nonylbenzol and 6 wt. parts of silicone oil. The product thus prepared shows a strongly reduced dustiness.

Example 7

Ke 100 wt. parts of product B were charged with 1 wt. 2 parts by weight of sulphated sunflower oil and 2 wt. parts of dodecylbenzol and 5 wt. parts of silicone oil.

Example 8 '·,

Ke 100 wt. parts of product C were at the end of the synthesis at

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- 5 wt. parts of tall oil. The product thus prepared shows a strongly reduced dustiness.

Example 9

To 100 parts by weight of product D, 5 wt. The product thus prepared shows a strongly reduced dustiness.

Claims (5)

SUBJECT OF THE INVENTION CLAIMS 1. Powder-like adjuvants having a reduced permeability based on synthetic tannins or components thereof, characterized in that they contain 0.05% by weight of the composition. compounds of formula I, 237 182 where Κ = H-, -O- / CH ₂ GH ₂ 0 / _n -H where η = 1 to 10 L = H, alkyl / C ₅ to C ₁₂ / j -CQOR wherein R is alkyl of C] _ to ζΐθ R = II-, -COOR wherein R is alkyl of up to C 8. 2. A composition according to claim 1 comprising from 0.1 to 8% by weight of a composition. sulfated vegetable oil. 5. Powder formulations according to claim 1, characterized in that they contain from 0.1 to 8% by weight. triethanolamine. 4. Powder formulations according to claim 1, characterized in that they contain from 0.1 to 8% by weight. silicone oil · 5. Powder formulations according to claim 1, characterized in that they contain from 0.1 to 8 wt. polyethylene glycol. . 6. A powder composition as claimed in claim 1 comprising 0.05 to 8 wt. tall oil. Printed by Moravian Printing Works, Price: CZK 2,40 with operation 12, cl. Lidove milici 3, Olomouc