DE876294C - Process for oiling threads, fibers and yarns with a reduced electrical charging capacity - Google Patents

Description

(WiGBl. P. 175)

ISSUED MAY 11, 1953

C 3piIVc / 2? B

The invention relates to a method for oiling threads, fibers and yarns with reduced electrical chargeability, especially of cellulose acetate threads.

It is well known, cellulose acetate threads, by which term threads, yarns, warp yarns or Staple fibers are understood to be treated with lubricants in order to reduce their resistance Increase attrition. It is also known to use the threads with means to reduce the electrical Charging ability to handle the inclination of the threads, during normal textile work, such as carding, weaving, spinning and knitting, to be electrically charged, degrade.

Lubricants which contain alkylolamines or their salts or soaps are known. So describes British Patent 376,785 a method of treating cellulose acetate and the like Textile materials, which consists in applying a preparation made of alkylolamines to them and / or their salts or soaps consists of or contains aliphatic acids, but no fats or oils. British Patent 388427 describes a method of manufacture of staple fiber, in which the threads before they are cut into staple fiber with a liquid which consists of alkylolamines and / or their derivatives exists or contains such. B. oleic acid soaps and / or derivatives of di- or polyhydric alcohols, in which some of the hydroxyl groups of the alcohols are esterified with fatty acids; Examples such esterified derivatives are glycerol monooleate, glycerol dioleate, ethylene glycol monooleate and diethylene glycol monooleate. In the American

Patent 2,150,569 is stated to be the spun Yarns made from organic) cellulose derivatives with an electrical chargeability to treat a diminishing agent, which contains an organic electrolyte obtained from a fatty acid soap an amine, such as triethanolamine oleate, a lubricant and in support of the Lubricating effect consists of a fatty acid sulfonic alcohol; the fatty acid sulfonic alcohol can be used as an amine salt, such as a triethanolamine salt can be used, and plasticizers such as glycols or theirs Ether can also be added to the mixture. British patent specification 492 472 describes a lubricant composition for textile material made from organic cellulose derivatives, which contains a lubricating oil and a sulfonated naphthene and / or a salt thereof, together with, if desired, a fatty acid soap of an amine such as triethanolamine. Body which one Dissolving or latent dissolving effects on the cellulose derivative can also be added are examples of such substances. Formal. British patent specification 550 195 describes a 'solution serving as a textile lubricant which contains: a lubricating oil, an agent to reduce the electrical charging capacity, preferably an inorganic electrolyte, a sulfonated long chain aliphatic carboxylic acid such as oleic acid and a mixing agent, e.g. B.

a long chain alcohol or polyethylene glycol ether or ester. The British patent specification 574072 describes a textile finishing agent which contains a reaction product which is obtained by adding a mineral oil, a vegetable oil and a fatty acid, e.g. B. oleic acid, with sulfuric acid lets react and then an alkali, an alkylolamine and water are added and which also a contains alkylated phenol, an esterified vegetable oil, · tricresyl phosphate or triphenyl phosphate.

The purpose of the invention is the production of improved lubricating agents, which the electrical Reduce the charging capacity, especially in the case of threads, fibers or yarns made from cellulose derivatives Cellulose acetate; are suitable.

According to the invention is a method for oiling Threads, fibers and yarns with a reduced electrical charging capacity, by treatment with a solution consisting of (a) a larger part of oil or a mixture of such oils, (b) a sulfonated long-chain compound of an alkylolamine, preferably triethanolamine, and optionally (c) an i-alkylolamine salt of a long chain Fatty acid, characterized in that the compound (b) is an alkylolamine sulfonic oleic acid or an alkylolamine sulfonoleyl alcohol and the mixing agent (d) a hydrophilic and a long-chain water-repellent group-containing compound, preferably one through partially Esterification of a polyhydric alcohol, such as diethylene glycol monolaurate, represents, wherein the mixing agent is used in such an amount that a clear Solution arises,

The invention is further characterized in that that water or a polyhydric alcohol is added to the solution in such amounts that no precipitate forms.

"The lubricating oil can be a mineral oil, a vegetable oil such as palm kernel oil or coconut oil, or a saponifiable synthetic oil such as butyl acetyl ricinoleate, methyl oleate or ethyl laurate, or a mixture of such oils, e.g., a mixture of mineral oil and palm kernel oil. Mineral oils having a viscosity from 180 to 440 Engler degrees at a temperature of 20 ⁰ are preferred.

The preferred alkylolamine for the compounds (b) defined in more detail above and also for the long-chain fatty acid salts is triethanolamine. The compounds (b) can be prepared conveniently by reacting oleic acid or oleyl alcohol sulfonated with 20 ⁰ / cent commercial fuming sulfuric acid, containing about 20% of SO _3, and then adding triethanolamine in sufficient quantity to prevent the formation the desired salt. Triethanolamine sulfonic oleic acid is the preferred compound. The preferred long chain fatty acid salt of the alkylolamine is triethanolamine oleate, although triethanolamine salts of other long chain fatty acids such as stearic, lauric and palmetic acids can be used.

The mixing agent used in the invention serves to mix the alkylolamine compound or compounds to make it easier to mix with the lubricating oil or oils used, so that a clear Solution is obtained. The mixing agent is preferably a partial ester of a polyvalent compound. Examples of such esters are diethyl glycol monolaurate, Triethylene glycol monolaurate, pentaethylene glycol monolaurate and sorbitan monolaurate. Oleyl alcohol can also be used as a mixing agent, but saturated ones are generally used Compounds preferred because they show no tendency to oxidize when stored.

It has been found that the partial esters used as mixing agents according to the invention are, in addition to their mixing effect in the solution, generally a significant increase in cause specific conductivity. The increase in conductivity is significantly greater than it is due to Summation of the conductivities of the constituents of the mixture had to be expected. The effect is illustrated by the following conductivity numbers, wherein diethylenglycol monolaurate the partial ester was used as an example:

Specific conductivity of diethylene glycol monolaurate. . = 0.18

Specific conductivity of oil = 0.008

Specific conductivity of oil containing 10% diethylene glycol

monolaurate contains = 1.6

The addition of a small amount of water, e.g. 2 to 6%, calculated on the total weight of the solution, also causes a significant increase in conductivity, which can reach a number in the range of 60. The conductivity

S76

is also increased by the addition of a polyhydric alcohol. The part esters have also have the advantage that it removes the lubricant from the threads to which it is applied during the normal degreasing process.

If the viscosity of the solution according to the invention is too high for a particular purpose, it can be lowered by adding alcohol which preferably contains at least 8 carbon atoms in the molecule. Examples suitable alcohols are octyl alcohol, oleyl alcohol and stearyl alcohol.

A volatile dye for identification purposes, e.g. B. Disulfine Blue (Color Index No. 712), can also be incorporated into the treatment liquids according to the invention.

Examples of lubricating and electrostatic chargeability reducing agents which are suitable for use in cellulose acetate threads according to the invention are given in the following table, in which the parts are by weight. Inform all these examples, the Triäthanolaminsulfonölsäure or Triäthanolaminsulfonoleylalköhol was prepared by adding oleic acid, 20 parts of a 20 ⁰ / o fuming sulfuric acid to 80 parts or admitted oleyl alcohol, maintaining the temperature at 2NC ^a was maintained, and by finally by the addition of parts of triethanolamine neutralized.

Example no.

Triethanolamine sulphonic oleic acid (b)
Triethanolamine sulfonoleyl

alcohol (b)

Triethanolamine

Oleic acid (a)

Diethylene glycol monolaurate (d) .. triethylene glycol monolaurate (d)
Pentaethylene

glycol monolaurate (d)

Sorbitan monolaurate (d)

Oleyl alcohol (d)

water

Diethylene glycol

Mineral oil (a)

Palm kernel oil (a)

Arachis oil (a)

Butyl acetyl ricinoleate (a)

10

IO 20

IO

IO IO

IO 20

IO

15th

4th 10

15th

IO

3 66

4 61

40 26 40
26th

40
26th

IO

15th

40
26th

IO

IO

5
4th

IO

5 15

5 15

40 26th

2 63

58

5 4 10

15th

Claims (2)

Patent claims: i. Process for oiling threads, fibers and yarns with a reduced electrical charging capacity by treatment with a solution consisting of (a) a larger part of oil or a mixture of such oils, (b) a sulfonated long-chain compound of an alkylolamine, preferably triethanolamine, and optionally (c) an alkylolamine salt of a long-chain fatty acid, characterized in that the compound (b) is an alkylolamine sulfonic oleic acid or an alkylolamine sulfonoleyl alcohol and the mixture 2 ¹ . 48 10 agent (d) a group containing a hydrophilic group and a long-chain hydrophobic group Compound, preferably one by partial esterification of a polyhydric alcohol resulting compound such as diethylene glycol monolaurate, the mixing agent being used in such amounts that a clear solution emerges. 2. The method according to claim 1, characterized in that that the solution is water or a polyhydric alcohol in such Amounts added so that no precipitate forms. © 5094 4.53