There is a kind of “acrylic fiber” called “dralon®”

“DeRong ” is a polyacrylonitrile fiber launched by Bayer in 1954. Why is it still popular now?

1. The history of dralon®:

In 1954, Bayer AG introduced a new type of polyacrylonitrile The fiber was introduced to the market and named “dralon®”. This high-tech material quickly became a best-seller and dominated the international market for more than half a century.

1954

Birth year of the brand dralon®, establishment of the production in Dormagen

1983

Production of dralon® in Lingen with Bayer AG

2001

Foundation of the Dralon GmbH with its production locations Dormagen and Lingen

2004

The 50th birthday of dralon®

2008

Brandrelaunch

2011

10 years of independence and 40 years of fiber production in Lingen

2. The production process of dralon®:

1. dralon® X

dralon® (DeRong) X is a polyacrylonitrile fiber (PAN fiber ). It is produced by dry spinning. The production process is divided into 4 steps:

1) Polymerization

Acrylonitrile (ACN) is polymerized with other monomers (such as dye additive monomers) to form polyacrylonitrile (PAN) ).

2) Dissolve

After washing and drying, the white PAN powder is dissolved in dimethylformamide (DMF) by stirring and heating, and then filtered.

3) Spinning

The solution is squeezed out from the nozzle to form nascent fibers. The solvent (DMF*) is removed from solution by hot gases during spinning (dry spinning)
Separated, it can be reused after distillation recovery.

4) Post-processing

In the post-processing process, the virgin fiber obtains its characteristic properties, such as strength and elongation, through washing, stretching, curling, drying, oiling and other processes Rate, fineness, bulk and feel, etc.
dralon® X Supplied in the form of textile fibers or tows.

2. dralon® L

dralon® L is a polypropylene fiber (PAN fiber). It is made by wet spinning. The production process is divided into 4 steps:

1 ）Polymerization

Acrylonitrile (ACN) is polymerized with other monomers to form polyacrylonitrile (PAN).

2) Dissolve

After washing and drying , white PAN powder is dissolved in dimethylacetamide (DMAC) by stirring and heating, and then filtered.

3) Spinning

The solution is squeezed out from the nozzle to form primary fibers. The solvent is separated from the solution in a water bath (wet spinning) during the spinning process and can be reused after distillation.

4) Post-processing

dralon® L is supplied in tow form.

3. dralon® Comparison between (DeRong) and other fibers:

4. Environmental performance of dralon®:

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