DE1288065B - - Google Patents

Description

1 2

The invention relates to a process for the fact that, according to the invention, the dye is coated with iodine to improve the light fastness of cationic dye and that damage to the dyes colored on polymeric olefins is avoided by sunlight,
the articles. The mentioned polymeric olefins based

Synthetic fiber fabrics and injection molded parts are generally used on synthetic fibers Basic and cationic substances and molded parts are those made from polyolefins alone, Dyes achieved glossy shades, but mixtures of polyolefins and other polymers, not satisfactory in terms of their lightfastness. Mixtures of polyolefins and organic compounds. If, accordingly, basic and cationic bonds of lower molecular weight, graft dyes for coloring on polymeric olefins ίο polymers based on polyolefins or based synthetic fibers and molded parts, copolymers made from polyolefins with others are used is the lightfastness of these articles bindings are made.

very low, so that these dyes cannot be treated with other halogens and halogens in practice.

are usable. geniden as iodine and hydrogen iodide have related

As a result of extensive investigations, the improvement of the lightfastness of polymers is also important in addition to improving the lightfastness of colored basic and cationic dyes polymeric olefins containing cationic dyes, olefins have little effect. Furthermore are also z. B. a cationic group in its chemical treatments with compounds other than Structure containing basic or cation color lightfast agents are known, such as. B. Benostoffe, are colored, and in relation to this, these are phenon, benzotriazole and their derivatives, colored for improvement polymeric olefins for practical tion of the lightfastness polymeric, with basic or To bring use, it has now been found that cationic dyes of colored olefins do not by adding iodine or iodine water in one effective.

Dye bath or by the treatment. If in the method according to the invention the

colored polymeric olefins with iodine or hydrogen iodide 35 treatment with iodine or hydrogen iodide at the same time

After dyeing the lightfastness polymeric time as the dyeing takes place, are polymeric

Olefins dyed with the mentioned dyes and olefins-based synthetic fibers

are, is significantly improved. Molded parts immersed in a dye bath, which the

It is a method of improving the dyeing required amounts of cationic dyes

bility of polyolefin, such as polypropylene, 30 and 0.5 to 15% ° d J ^au fd ^he basis of the weight

by treating the polyethylene layer with chlorine, which contains treated substances. In this case it will

Bromine, fluorine, iodine, hydrogen chloride, hydrogen bromide, iodine previously dissolved with a suitable solvent

Hydrogen iodide or hydrogen fluoride by the USA and then added to the dye bath. The dyeing

Patent 2,801,447 became known. In addition, one is carried out ^{at 100 ° C. for 0.5 to 2 hours, and}

Process for improving the affinity for basic 35 obtained colored polymeric olefins

dispersing, sulfide and naphthol dyes have good lightfastness.

Polypropylene fibers by treating the polypro- If in the process of the invention the

PVC fibers with halogen from Nippon Seni Keizai treatment with iodine or hydrogen iodide after the

Kenkyusho "Fiber Science", Vol. 32.1962, known- dyeing takes place, synthetic fibers and

become. 40 molded parts based on basic or cationic

In contrast, the inventive method serves dyes based on colored polymeric olefins, drive to improve the light fastness of with. several minutes to 2 hours at one above the cationic dyes in a bath at polymeric room temperature Olefin-based articles, the articles being immersed in the water-insoluble iodine in the coloring or at the same time as the coloring 45 alcohol, glycerine, chloroform or an aqueous one treated with iodine or hydrogen iodide. Hence potassium iodide solution is dissolved and put in water if the method according to the invention is not used to dissolve soluble hydrogen iodide directly in water, Improving the dyeability of polypropylene fibers, and then rinsing sufficiently. This treatment can in which the polypropylene fibers are chemically treated with iodine but also in iodine or hydrogen iodide vapor will be led to the dyeability of the poly-50.

to improve propylene fibers. This is because the method according to the invention is used

It has been found by various experiments that if the synthetic olefins based on

by iodising the polypropylene fibers before the table fibrous materials and molded parts after chemical

Dyeing achieved lightfastness of dyed articles gerin treatment, such as. B. chlorination, sulfurization and

is lower than the lightfastness of articles made of poly- 55 treatment with acid and amine, with basic or

propylene fibers which are dyed with iodine cationic dyes in the dyed state,

be treated. The lightfastness of the post-treatment

In the known process, chemically colored polymeric olefins can be used with the light

Iodination and difficult reaction conditions for the authenticity of untreated olefins are not compared

Iodination of polyolefins that do not become an active radical 60. For example, the lightfastness of poly-

habcn, necessary, and the dyeability of polyolefins meren olefins-based, with basic dyes

without these difficult reaction conditions, colored synthetic fibers and moldings

cannot be improved. With the method according to share no iodine or hydrogen iodide treatment

of the invention, however, these difficult reaction- according to the AATCC test are only grade 1. After loading

Conditions are not given because a chemical 65 treatment with the method according to the invention

It is not necessary to iodize the colored polypropylene - the lightfastness increases by about 3 to 5 degrees or

is borrowed and thus only a physical adsorption even higher after treatment of the olefins according to the

of the iodine molecule is necessary. It is assumed the procedure described above.

The invention is illustrated by means of the following examples, to which the invention, however, is not restricted should be.

example 1

Crystalline polypropylene material having an average molecular weight of 77,000 was mixed with 3 percent by weight of octadecylamine and Methylendistearamid and then, drawn by the melt spinning at 240 ⁰ C, at a draw ratio of 5 avg. The resulting pulp was neutralized 30 minutes at 100 ⁰ C with a 20% ig ^he treated hydrochloric acid solution existing bath with sodium carbonate solution and then sufficiently rinsed with cold water. The polypropylene fiber fabric treated in this way had an affinity for basic and cationic dyes and was dyed in a bath which contained the basic or cationic dyes listed in Table I below. The dyed fabric was then ^{treated for 30 minutes at 90 °} C. in a bath which contained 5% (based on the fiber weight) iodine dissolved in 10 g / l aqueous potassium iodide solution, rinsed sufficiently and then soaped.

The lightfastness of dyed fabrics treated in this way, as was considerably improved compared to the lightfastness of untreated fabrics, as can be seen from Table I. is. The lightfastness values given in Table I were determined using the AATCC test determined by a fadeometer.

Table I.

35

Lightfastness Lightfastness with iodine not treated Dyes treated delter a colored colored Fabrics Fabrics Aizenauramine (C. I. 41000) (Class) 4 (Class 1 Aizenastraphloxin (C. I. 48070) 5 1 Malachite green (C. I. 42000) 4th 1 Victoria real blue BOH (C.I. 42595) 4th 1 Crystal violet (C. I. 42555) 5 2 Astrazon Orange R (C. I. 48040) 4th 1

The lightfastness of the fabrics obtained in this way was compared to the lightfastness of fabrics without Addition of iodine or hydrogen iodide in the dye bath were colored, greatly improved as out Table II can be seen. The lightfastness values given in Table II were determined by the AATCC test determined using a fadeometer.

Table II

45

Lightfastness Lightfastness from under from without Addition of Addition of Dyes Iodine or iodine Iodine or iodine hydrogen hydrogen colored colored Fabrics Fabrics Aizenauramine (C. I. 41000) (Class) 4 (Class 1 Aizenastraphloxin FF (C. I. 48070) ... 5 1 Malachite green (C. I. 42000) 4th 1 Crystal violet (C. I. 42555) 5 2 Astrazon Orange R (C. I. 48040) 4th 1

Example 3

After treatment with a solution containing calcium hypochlorite and hydrochloric acid, polypropylene fiber was dyed in a weakly alkaline bath containing the basic or cationic dyes listed in Table III below. The thus obtained colored material was / treated for 30 minutes at 90 ⁰ C in an aqueous solution from 5 ° o iodine (based on the pulp weight) and 25% potassium iodide (based on the pulp weight), sufficiently rinsed and soaped.

The lightfastness of the dyed fabrics treated in this way was not compared to the lightfastness treated substances are significantly improved, as can be seen from table ΙΠ. Those given in Table III Lightfastness values were determined by the AATCC test using a fadeometer:

Table III Example 2

Crystalline polypropylene material having an average molecular weight of 77,000 was mixed with 5 weight percent of a Polyätheresterharzes, which was prepared from a mixture of oxybenzoic acid, dimethyl terephthalate and ethylene glycol, and then, drawn by the melt spinning at 270 ⁰ C, at a draw ratio of 5 avg. The thus treated polypropylene fiber fabric had an affinity for basic or cationic dyes, and was 60 minutes dyed at 100 ⁰ C in a bath containing 5% (based on the pulp weight) in 10 g / l Kaliumjodlösung dissolved iodine or 5 ° / o Contained (based on fiber fabric weight) hydrogen iodide and the basic and cationic dyes listed in Table II below.

Dyes Lightfastness
with iodine be
traded
colored
Fabrics Lightfastness
not treated
delter a
colored
Fabrics Malachite green
(CI 42000)
Victoria real blue
(CI 42595)
Astrazon Orange R
(CI 48040) (Class) 4
4th
4th (Class 1
1
1

Example 4

A dyeable polypropylene film made by a method similar to that described in Example 3 Color ability was conferred, was dyed in a bath, which indicated in the following Table IV-

contained basic or cationic dyes. The colored material obtained in this ^{way was treated for 60 minutes at 100 °} C. in an aqueous solution of 5% hydrogen iodide based on the fibrous material, sufficiently rinsed and soaped. As can be seen from Table IV, the lightfastness of the treated colored material was considerably improved over the lightfastness of untreated colored materials. The light fastness values given in Table IV were determined by the A ATCC test using a fadeometer.

Table IV

Dyes Lightfastness
of with iodine
hydrogen
treated
colored
Fabrics Lightfastness
of untreated
delten
colored
Fabrics Aizenastraphloxin FF
(CI 48040)
Methylene blue FZ
(CI 52015) (Class 5
4th (Class 1
1

Claims (1)

Claim: Method for dyeing structures on the 15 that the structures are at the same time when dyeing or Base of polymeric olefins with cationic after dyeing with iodine or hydrogen iodide Dyes, characterized, are treated.