EU PFOS Ban Implemented In June 27Th

You may have some memories of the reports of the more than three years ago that there was a boiling pot of poisonous reports. At that time, the US Environmental Protection Agency said in July 2004 that DuPont Co did not report the main component of Teflon manufacturing in March 2001 for more than 20 years before March 2001. It has been harmful to human health and has violated the poison control law.

He decided to impose a huge penalty on DuPont.

On the second day when the Chinese media disclosed the news, officials from DuPont Shanghai branch of China said that DuPont's Teflon did not contain perfluorooctanoic acid and that the reports on foreign electricity were untrue.

For a time, the questioning of Teflon was overwhelming, and DuPont was caught in the vortex of being accused.

In fact, before that, according to Reuters, as early as the early 80s of last century, DuPont Co had discovered the residue of perfluorooctanoic acid in a pregnant worker in West Virginia factory. In 1991, the residue of ammonium perfluorooctanoate was found to be more than the company's own safety standards in the neighboring communities of West Virginia and Ohio.

Later, some experts believe that Teflon must add ammonium perfluorooctanoate in the production process. Although its content in Teflon products is very small, and Teflon can withstand high temperatures of 300 degrees Celsius, but for Chinese cooking habits (like fried and fried food), Teflon can still decompose at high temperatures above 300 degrees. These decomposition products are harmful to people's rest.

Finally, DuPont Co decided to reduce production by Teflon by 97% before 2010, and stop production until 2015.

It is this storm and the subsequent European Union ban on PFOS that make us aware of the danger of PFOS and PFOA.

Now, in order to let readers have a more comprehensive understanding of PFOS and PFOA before the EU's ban, we have published the article "PFOS ban and alternative orientation of fluorine finishing agents" written by Professor Chen Rongxi.

The PFOS ban and the alternative orientation of fluorinated finishing agents not only elaborate on the specific contents of the PFOS ban in the European Union and the United States, but also analyze the harmfulness of PFOS and PFOA.

PFOS is a substance with strong stability, which is difficult to decompose through the metabolism of organisms. It is difficult to accumulate in the body outside the body's excretory system, so it is a "persistent and stable existence, biological accumulation and toxic substances", such as accumulation in the human body, which may cause damage to the respiratory system.

In addition, because it is a persistent and stable substance and is not easily decomposed by microorganisms, it has the ability of remote environmental migration. In particular, it is mentioned that the alarming amount of PFOS and PFOA pollution detected in our water system (Yangtze River and Huangpu River) is worthy of our attention.

The characteristics of organic fluoride, the mechanism of waterproofing and oil repellent finishing, and the synthetic process of PFOS and PFOA derived intermediate breaks and the final products are also described in detail. The main principles to be followed in the alternative orientation can be understood, and the methods to avoid the problems of PFOS and PFOA at home and abroad and to reduce the content of PFOS and PFOA (Prohibition of certain limits) are introduced and commented.

The above contents make us have a comprehensive understanding of waterproof, oil repellent and easy decontamination finishing agents, which is of guiding significance for printing and dyeing enterprises to correctly use such products and avoid the trouble of export products due to violation of the ban.

The ban will take effect soon. What do the printing and dyeing and auxiliaries manufacturing enterprises have to do? The editor thinks that first, facing the slowdown of the US economy and the depreciation of the US dollar will directly affect the export of textiles and clothing to the United States, but Europe will be a good complement. Therefore, we should thoroughly understand the meaning and scope of the European Union's ban and understand what kind of synthetic route will bring into PFOS or PFOA, and determine what products to use to produce the PFOS problem, so that the problem of PFOS and PFOA can be eliminated at the stage of raw material control.

Second, it can be regarded as an opportunity for China's auxiliaries production industry.

In the past, our country was lagging behind in the production of fluorinated finishing agents, and more than 95% were imported. Now, many imported products have encountered PFOS or will encounter PFOA problems. So if we can study and develop products that do not exist PFOS and PFOA problems with these foreign companies, then can we stand on the same starting line?

Third, we have a sense of urgency to deal with the dangers of PFOS and PFOA. Now it is not a shocking amount of pollution detected in the Yangtze River and Huangpu River. Because of the difficulty of degradation of the pollutants, if it continues to increase, the harm to the ecosystem will be disastrous. We should have a clear understanding of this.

Even if we are not producing export products, we should avoid such problems in the attitude of being responsible to the Chinese people.