What is fluorine-free waterproofing agent?

According to the structure of the carbon chain, it can be divided into C8, C6, and C4, collectively called the fluorine system.
C8 has excellent effects and is affordable. It has been used by major textile and leather industries many years ago. However, C8 contains PFOA (perfluorooctanoic acid and salts), PFOS (perfluorooctane sulfonyl compound) and APEO (alkylphenol polyoxyethylene). ether). PFOA, PFOS and APEO are currently difficult to degrade in the environment. They are bioaccumulative and have multiple toxicities. They have the common characteristics of persistent organic pollutants. They are considered to be new persistent environmental pollutants that are focused on research in the 21st century. Their sources It is mainly a fluorine-based waterproof and oil-repellent agent.
The main component of C6 is PFHS (perfluorohexane sulfonyl compound or sulfonate), which is an ideal product to replace C8 containing PFOA and PFOS. For the textile industry, the main source of PFOA and PFOS is fluorine-based waterproofing Oil repellent. Therefore, the EU decree issued in 2006 stipulated that the content of PFOS and PFOA in textiles exported to the EU must be less than 1ug/㎡; at that time, it was difficult for C8 on the market to meet the requirements, and the PFOS and PFOA content in C6 was less than the regulations. Numerical values are generally difficult to detect, so it has been widely used instead of C8. However, in terms of effect and price, C6 is expensive, but its effect is difficult to match C8.
Fluorine-free is an emerging product in recent years, and there are not many manufacturers. Germany’s Rudolf Bionic Finish (bionic finishing) fluorine-free water-repellent finishing agent RUCO-DRY ECO is a type of hyperbranched dendritic macromolecular compounds and polymers that do not contain organic halides and do not contain APEO. They are suitable for fabrics of various fiber types. Highly effective waterproof finishing agent. Rudolf’s fluorine-free ECO is a highly recognized product on the market and has cooperated with many internationally renowned brands. The company’s fluorine-free texnology@XR88 is a durable water-repellent agent for hydrocarbon resins, suitable for cellulose fibers and synthetic fibers Water repellent finishing agent for blended fabrics. and waterproof synergisttexnology@FCB060. Waterproof synergist texnology@M390 is a reactive water-repellent agent containing resin developed by the company. It is suitable for the repellency of cellulose fibers and their blended fabrics with synthetic fibers. Water finishing agent.