DE1794304C - Method of rendering synthetic fibers antistatic - Google Patents

Description

a) 3 to 25 parts by weight of a water-soluble. ^{In many} " ^cases "

Polyglycid ^{ethers and not a single amine}

,. ".,. _Ί , ^,., ... . . Amines of various kinds.

b) 0.4 to 15 points by weight of at least one. _{One th wash} resistance is achieved if each water-soluble amine contains approximately one epoxy group of the polyglycidyl ether

and the impregnation hardens after drying, active hydrogen atom of an amine is present

where the dried fibers, based on the example, is on an epoxy group of Poij

Fiber weight, 0.5 to 3% of the products used glycidyläthcrs Ve MoI triethylenetetramine required.

contain, according to patent 1 109 133, because it has six active hydrogen atoms. W: r-j

indicates that an amine is used polyglycidyl ether which does not contain any nitrogen

with more than 3.5, at most up to 3.75 epoxy-equivalent active hydrogen atoms like that

valents per kilogram of a polyethylene glycol above-mentioned tertiary amines, it is usually!

with an average molecular weight per epoxy group of 0.5 to 2, preferably eirv

used from 300 to 1200. Use 25 tertiary amino group of tertiary amine.

2. The method according to claim 1, characterized in that the polyglycidyl ethers are produced w. indicates that alkylenepolyamines are used as described in the main patent.

det. The epoxyJ content of polyglycidyl ethers

groups will, as is usual for epoxy resins, dim <\

30 is the number of moles of 1,2-epoxy groups per kilogram

Epoxy compound indicated (epoxy equivalent. V. kg). Depending on the type of polyethylene used

The subject of the main patent 1 109 133 is a glycol and the reaction conditions in the Hei process to make the polyglycidyl ethers antistatic, products mn are obtained synthetic fibers, especially of cellulose - 35 more than 3.5 to a maximum of 3.75 epoxy equivalents' acetate fibers, polyacrylonitrile fibers or polyamide kg.

fibers, with the help of polyglycidyl ethers of polyols The synthetic hydrophobic fibers, which lead to:

and amines as curing catalysts. Treatment according to the present method in

The method is characterized in that it comes into consideration are the same as in the main the fibers are impregnated with aqueous preparations, 40 patent,
which is about 1000 parts by weight of water. The aqueous preparations can by combining

a) 3 to 25 parts by weight of a water-soluble poly- 6 ^{ene of} the required constituents in water are prepared glycidyl ether with 0.75 to 3.5 epoxy equivalents ^{, according to the} invention, the aqueous components per kilogram of a polyethylene glycol with preparations to 1000 parts by weight of water contain 3 to 25, an average molecular weight of ^4S preferably 6 to 18 parts by weight of one or more 300 to 1200 and about polyglycidyl ethers of the type defined and 0.4 to 15,

u \ η λ u · 1 λ τ ι j * · ...,. . preferably 0.8 to 8 parts by weight, one or more

b) 0.4 to 14 parts of at least one water-soluble _rerer J _mjne ^ _{def Rege} , _{one increases bd use}

Amines entnaiten, _{from more than 25 parts of polyglycidyl ethers none or}

and the impregnation hardens after drying, so at most only slightly better antistatic

wherein the dried fibers, based on the fiber properties. When using less than

weight, 0.5 to 3% of the products used consist of 3 parts of polyglycidyl ether as a rule

keep. only insufficient antistatic effects. The to be

It has now been found that the amount of amine to be used is also primarily directed

wash-resistant, antistatic finishes on synthetic 55 according to the number of epoxy groups present. When

table organic fibers, in particular from CeIIu rule of thumb, the above amount of 0.4 to applies

loose acetate fibers, polyacrylonitrile fibers or polyamide-15 parts amine. If the excess amine is too great,

fibers, if you get the fibers with them you won't get any wash-resistant antistatic

aqueous preparations impregnated on 1000 Ge equipments.

parts by weight of water about 6u Impregnation of the textile fibers with the aqueous

a) 3 to 25 percent by weight of a water-soluble preparation is advantageously carried out according to the for this purpose

Polyglycidyl ethers with more than 3.5, at most known methods at room temperature, for example

but 3.75 epoxy equivalents per kilogram of a ^W f ^e f ^{m Foulard} · ^{Before the hard} "^ ^oll f ^nd ' ^{e fiber} "

The higher the curing temperature, the shorter b) 0.4 to 15 parts by weight of at least one water- the time required for curing. So at 4O, at 8O ⁰ C 1 bi ^"1 I _n must hours ⁰ C contain soluble amine, about 4 hours, at 100 ⁰ C

20 to 30 minutes and at 120 ^° C. for about 5 to 10 minutes. Temperatures between 110 and 130 ⁰ C have proven to be particularly favorable. You can also go higher with the temperature, e.g. B. to 150 ⁰ C, but then there is a risk of yellowing. Instead of curing at elevated temperatures, this can also be done by storing the dried textile material for about 24 hours at room temperature, ie at temperatures of 15 to 25 ° C.

As a rule, the synthetic fibers in the baths are padded and pressed so that on the Fiber 0.5 to 3% of the products used remain. Then the fibers are dried at 40 ° C and how specified hardened.

The synthetic fibers treated by the process of the present invention have good antistatic properties Properties that are largely retained even after washing.

In the following example, the parts are parts by weight and the percentages are percentages by weight.

example

2 parts each of a polyglycidyl ether made from polyethylene glycol 300, with 3.75 epoxy equivalents / kg and 0.2 parts of triethylenetetramine are in 110 parts Water (impregnation bath A), 240 parts of water (impregnation bath B) and 160 parts of water (impregnation bath C) solved.

With the impregnating bath A is a polyamide fabric is padded, squeezed to a weight gain of 55% and dried for 15 to 30 minutes at about 40 ⁰ C, where already enters a certain curing.
A polyacrylonitrile fabric is padded with the impregnation bath B, pressed to a weight increase of 120% and dried as in A for 15 to 30 minutes.

With the impregnation bath C, a polyester fabric is padded with a weight increase of 80%.

»5 presses and 15 to 30 minutes as with A dried.

The finished materials are then left to rest for post-curing at room temperature, ie about 20 ^° C. for a longer period of time. From time to time samples of these tissues are each given 5 g of soap per liter

Washed for 30 minutes at 50 ° C and measured the specific surface resistance of the samples.

As the following table shows, the equipment is washable after storage for 24 hours, d. That is, the antistatic effect after washing is practically the same as before washing.

Specific surface resistance in ohms

Polyamide fabric

Polyacrylonitrile fabric

Polyester fabric

Dried, unwashed

Dried, washed immediately

Dried, washed after 8 hours

Dried, washed after 24 hours

Dried, washed after 6 days

Untreated

From other samples of the fabric finished in this way, after storage for 24 hours at a relative Humidity voi: 25% at 23 ° C. the half-value discharge times of the fabrics after rubbing with wool and polyvinyl chloride measured.

To determine the resistance to washing, the test fabrics are washed 5, 10, 15 and 20 times subjected as follows:

The fabrics are washed in a washing machine with 3 g / l detergent for 10 minutes at 4O ⁰ C and 4 washes.

The detergent has the following composition:

10-4

> 10 "

> 10 "

> 10 "

> 10 "

> 10 "

> 10 "

10 ^{11 3}
10 "

I ₀ IO.
10 ^1δ

1Q13.7

40 8th 2

Parts by weight
Parts by weight
Parts by weight
Adduct
Parts by weight
Parts by weight
Parts by weight
0.2 parts by weight

acetic acid
2 parts by weight
6.8 parts by weight

Talc soap

Alkyl aryl sulfonate

Nonylphenol ethylene oxide

Sodium tripolyphosphate
Sodium disilicate
Magnesium silicate
Sodium-ethylenediamine-tetra-

Carboxymethyl cellulose
Sodium sulfate

discharge times are minimal even after 20 washes; d. H. the good antistatic equipment an extraordinary one Exhibits permanence.

The results of this test are compiled in the table below, from which it is taken can be that the increase in half-life

tissue Quantity
To wash Half-value discharge time egg Po in the
Treated with
Polyglycidyl ether Po 45 in champagne
Untreated 214 Where 1 Polyacrylic 0 Where 228 1 1 50 nitrile 5 160 188 1 2 10 117 197 2 2 15th 145 212 2 2 20th 136 140 2 1 polyester 0 151 145 2 SS 5 135 137 2 10 115 140 2 15th 165 143 2 20th 138 161 1 60 polyamide 0 159 168 2 5 110 163 1 2 10 107 164 2 2 15th 112 166 2 2 20th 109 2 110 2 1 2 2 2 3

Wo ~ rubbed with wool
Po = rubbed with polyvinyl chloride

Claims (1)

and the impregnation cures after drying. Claims: wherein the dried fibers, based on the fiber weight, 0.5 to 3% of the products used 1. Method for rendering'hydro- antistatic. phobic, synthetic fibers, especially from 5 As water-soluble amines can be used in the present Cellulose acetate fibers, polyacrylic fibers or processes primary, secondary or tertiary monopolyamide fibers with the help of polyglycidyl ethers or polyamines can be used up to one of polyols and amines as curing agents, concentration of at least 1.5 percent by weight where the fibers are soluble in water with such aqueous. That is particularly preferred Preparations impregnated, the use of alkylenepolyamines to 1000 weight m as in the main Water approximately patent stated.