Short-chain fluorine-containing water- and oil-repellent copolymer with network structure and preparation method thereof

Abstract

The invention provides a short-chain fluorine-containing waterproof and oil-repellent copolymer with a network structure and a preparation method thereof. The short-chain fluorine-containing waterproof and oil-repellent copolymer with a network structure of the present invention includes the following copolymer units: 1) 35-65% by weight is derived from 1 , 3,5-benzenetricarboxylic acid and alkyl glycol and acrylic acid polycondensate copolymerization unit; 2) 15-35% by weight derived from the copolymerization unit of short-chain fluorine-containing acrylate; 3) 10-40% by weight derived from Copolymerized units of acrylate; 4) 1-10% by weight are derived from copolymerized units of functional monomers. The copolymer has a network structure and has good waterproof and oil-repellent effects, comparable to long-chain perfluoroacrylate waterproof and oil-repellent agents, and can be used for waterproof and oil-repellent finishing of various substrates such as fabrics, leather, and paper.

Description

Short-chain fluorine-containing water- and oil-repellent copolymer with network structure and preparation method thereof technical field [0001] The present invention relates to the field of functional additives, in particular to the field of water and oil repellants. Background technique [0002] Fluorinated acrylate copolymer emulsions are commonly used and the only water and oil repellent finishes on the market. will usually be Perfluorooctanoic acid (PFOA) or perfluorooctane sulfonic acid (PFOS)-based perfluorocarbon chain (‑CnF2n+1, n≥8) acrylics The polymer is called a long-chain alkyl perfluorinated water and oil repellant. With the deepening of related research, people gradually realize that PFOA / PFOS is difficult to degrade, there are problems such as bioaccumulation and environmental hazards in the application process, so this type of fluorine-containing compounds restricted and disabled. [0003] Short-chain alkyl fluoride water repellents, that is, C6 or ...

AI Technical Summary

Problems solved by technology

With the deepening of relevant research, people gradually realize that PFOA / PFOS is difficult to degrade, bioaccumulate and harm the environment in the application process, so this kind of fluorine-containing compounds is restricted and banned

[0003] Short-chain alkyl fluorine water repellent, that is, C6 or C4 water repellent commonly used in the industry, has extremely low bioaccumulation and almost non-toxicity. Current research is considered to be a good substitute for long-chain alkyl fluorine water and oil repellents products, but they are expensive

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