DE1619101A1 - Process for the production of decay-resistant organic fibers - Google Patents

Description

9422 IH / A

International Leadü »e

Research. Organization, Inc "
292 Madison Avenue

Hew York, N.Yo 10017

stable organic fibers

Me invention relates to a process for the production of rot-resistant organic fibers and relates in particular on the application of solutions or emulsions of certain organic lead compounds with the formula R-Pb-S-R on hydrophilic organic fiber material.

As used herein, "fibrous organic material" includes any hydrophilic material, doh, "organic Materials that absorb or adsorb water, such as wool, yiskose rayon, copper-ammonium rayon, ramie fiber, ■ jute, paper ododglo including their chemical or physical modifications that can be impregnated with a liquid and dried.

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They can be in the form of free fibers, as fiber strands or Yarn or in the form of woven or non-blown Materials. The term "woven fabrics" is preferred as for treated or woven materials.

The expression "rot-resistant?" refers to bactericidal chemicals that, v / enr. them in the fiber material are present, are able to reduce the effectiveness of To divide up or delay organisms that normally destroy hydrophilic, organic fiber material. Without that Addition of such bacteriocidal! Chemicals are desized, Frosted and bleached materials of the type mentioned completely in two to four days in so-called 'burial tests destroyed, which is explained in more detail in the following examples will.

It is an advantage of the invention that the organic fiber material by conventional techniques in conventional facilities can be treated.

So far, the protective treatment of such materials has with regard to the attack of bacterial organisms posed difficult problems, particularly in the manufacture of textiles for outdoor use by them alternating different weather conditions are exposed or with such tarpaulins (canvas) that have one side in contact with the ground. Tm ideal is said to be the chemical that sifted the resistance

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a "biological attack guaranteed, easy and simple be applicable. She should be able to do the "thing in question." To protect material from degrading organisms or, if the concentration is low, to destroy the organisms »You should also remain in effect for a long time. It must not have a discolouring effect or physically destroy the material. It must be compatible with dyes from decorative or other reasons, such as water repellency, on the fabric are applied or brought in.

It is known to treat textiles for such purposes. Toxic chemicals such as mercury compounds have already been used, but textiles treated in this way can be dangerous for humans and animals.

Treatment with bacteriocidal chemicals result in the Hegel to discoloration or exposure of the subsurface. Many chemicals are expensive, while others have to be applied in large quantities, so they must be used accordingly are expensive

As a result, there is a real need in the textile industry for an effective method of fouling Organisms or whose adverse effects can be eliminated and not the disadvantages mentioned above having.

It has now been found that by impregnation with solutions of certain organic lead compounds is lEQjlicli, the highly active,

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To destroy or slow down cellulose-destroying organisms and thereby transform the relevant materials into, simpler Way to make rot-resistant

In general, the method according to the invention consists in following:

1. Prepare a solution or an emulsion from the Organic lead compound.

2. Impregnation of the organic fiber material with the lead solution.

3. Removal of the excess solution by removing the fiber material is rotated by a pair of nip rollers, which is set so that about 60-120 wt. # the Solution, based on the dry weight, remain in the tissue.

4. Drying of the fiber material.

The procedure is simple and easy to use. Low concentrations of the organic lead compound lead to a complete and rapid destruction of the organisms or slow down their effectiveness, with an undesirable Discoloration, toxicity or deterioration in strength can be avoided.

The product obtained is advantageously resistant to microbiological degradation, remains uncolored and retains its chemical properties. In particular, it is educated

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Material extremely resistant to mechanical Stress ο

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Ans a Organobleilösung the tz

The organic lead compounds have the formula R, Pb ~ SR, where R is an alkyl, aryl, cycloalkyl or a combination of these, examples of such compounds are: triphenylthiomethyl lead, triphenylthioethyl lead, triphenylthiopropyl lead, triphenylthiobenzyl lead and triphenylthiophenyl lead. This organolead compounds can be prepared by known chemical methods "Excellent results are obtained when the material with 0.1 to 5.0 percent, of the $ RZ Pb-Sr solution is impregnated and the receptacle. 60 - 120 wt, fo is ο

DJE organolead compound, in an aqueous medium, such as ethanol or isopropanol, are dissolved to concentrations of the order of 1- 1-0 wt. To obtain fo. However, as the length of the carbon chain in the alkyl group increases, non-aqueous solvents such as toluene, petroleum, carbon tetrachloride, chloroform and the like are satisfactory solvents. The aqueous or non-aqueous solvents can be used as such, or the non-aqueous solutions of 31ei can be emulsified and Bmulclonji;] bilder. TItL _? Emulsions can be ^r Aaser Oilers Wa3öer in Ul of the oil in Vi. They can contain surface active agents, water repellants, resins and colorants. The solutions or emulsions can be well known

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Methods are applied, such as by spraying, brushing, Immersion or the like.

The I mprägnation of FFAs erma teri as

The organic fiber material is then impregnated with the R, Pb-SR solution by introducing the material into the solution and pulling it through it. The excess solvent is then removed by passing the material through nip rollers. P The amount of solution remaining in the material can be of the order of 60 - 110 ¹ ^ eW. $ based on the dry weight of the woven material. 100 ^L t> left in the material or the recording is set se that 0.1 - - 80 preferably are. 5.0 wt # of R ,, Pb-Sr compound based fibrous remain on the dry material.

The drying of the fibrous material

The impregnated material is then dried using the usual textile ψ drying methods. Air with approx. 6 π -130 is used, preferably with 75-90 ° 0 * The exact temperature depends on the solvent. The lower temperatures are more suitable for the low-boiling solvents. If the R, Pb-SR is in the form of a resin-like emulsion, higher temperatures in the order of about 130-160 ° 0 may be required to fix the resin.

The textile materials treated in this way have 10OfHs: theirs Maintained strength during the test period, did not discolor, and their chemical properties remained unchanged.

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changes. The treated organic fibers, especially woven and non-woven wool bundles, were then placed under the Earth brought the highly active, cellulose-attacking organisms contained. Samples were taken at various time intervals and tested according to AATCC Standard Method 30-1957 T-B-3, which means a test procedure in which water is leached in order to test the resistance of textile fungicides to determine. The following tests were performed with desized, stained and bleached 54 x 48 pieces of wool carried out, whereby the following resulted: (the number 54 χ 48 means that it is a question of pieces of wool with 54 threads per inch in the warp direction and 48 threads in the weft direction)

Samples of untreated desized, stained and bleached Pieces of wool of the type mentioned were placed in a bed of rotting and inspected daily. After two days were Disintegration observed and after four days a complete dissolution «

2 g of thiomethyl triphenyl lead were dissolved in 198 g of ethanol. Desized, stained and bleached pieces of wool were immersed and then passed through nip rollers which were set so that an excess of about 100 tons (based on the dry weight) remained in the pieces. Drying was carried out at 85 ° C. After 42 sheets of a Boder test, the material still had 100 ^c / o of its original FeF ⁴ / r strength.

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Example 3)

12 1/2 grams of thiopropyl triphenyl lead was dissolved in 237.5 grams of chloroform. The subsequent treatment of the test pieces was carried out as in Example 2. After 70 days, the samples still had 100 tfo of their original strength.

Example 4_)

8 ι Thionethjrltriphenylblei was dissolved in 192 g of chloroform. A part of the sample pieces according to Example 1 were treated in the same manner as in Example 2. The samples were then rinsed in tap water for 24 hours (see AATCC test method 3O-1957-TO-1). After 56 days of soil testing, the samples still had their 100% strength.

9 ρ · thioethyl triphenyl lead was dissolved in 291 g of chloroform. The samples treated with this solution had after 70 days Soil sample still has its 100 $ strength.

Example_iel_6_)

A 5 ^ i ^ e Lösurg from Thioäthyltriphenylblei and ChD.oroform was scheduled. The specimens treated with it were 24 hours rinsed in tap water. After 161 days, the pattern had still its original strength.

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A solution of 4 * 6 follow Thiaprppjltrdphenylhlei wtirde in ethanol remains ready et necessary for impregnation of the Mugte ?? according to Example 1 was used, with a scuffing of the sample in such a way that $ 100 (based on the troekenifewich * * ') of the solution remained in the samples. After 5.6 days, the samples still had essentially their original strength «, '. Λ

54 x 48 solid pieces yamrden impregnated with a single packing of 0.5 g of thioethyl triphenyl lead and 99.5 g of lthane-1. The excess of Tiösunga was squeezed off to 100% (based on the dry weight), at 8 § 0 was dried. Ha, ch

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After 14 days of soil testing, the samples were still in their original state Breaking strength?

In summary it can be stated that in the Surprisingly, the patterns look their original. sweeping ability not blurred in 4th soil tests and in leigpie.1 I not even after -y-y-y days,

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Claims (1)

_m 1811101 ft) An a pr ü e h e 1. A process for the production of fäulniswiderstandsfäbigeri organic fibers Tdzw. Woven or fleece made from these fibers, characterized by: a) Approach of a solution from a 0.5 - 55 figure Lead compound with the formula R ~ Fb-S ^ -R, where R ent neither at least part of a Sruppg van. Alkyl. Aryl ™ · and Cyclealkyl ^ ladical i b) Impregnation of the organic fiber material with the Thio. ^ Organpble.ivsirbinding j q) Removal of the excess thio ^ organo lead solution by means of nip rollers, which are set in this way _? that 60 - 120 weight fo the reading, based on the dry weight of the Pasermateriala, and d) drying of the fiber material ) 2, method according to claim 1, characterized in that cellulase fiber is used as Fasennaterö-al 3, method according to claim 1, characterized that the thio-organic lead compound is at least part of a group fh ± Qnj ^ thyltriphenylble.i | ThiQätliyltriphenylb.lei and Thiopropyltriphenylblii igt, 4. The method according to one or more of claims 1 to 3, characterized in that a S098Ä3 / 1S55 - each - aqueous solution of the thio organobler compound used will" ο method according to claim 1, characterized thereby draws that as a non-aqueous solvent from the group of chloroform, pentane, hexane, heptane and as ü? hiol) leiver connection Thiopropyltriphenylblei and i is used. BATH ORIGINAL 9098 / -3 / 1R5 5