Preparation method of fluorine-free waterproof agent and prepared fluorine-free waterproof agent

• Main Authors: ZHANG CHUNMEI, ZHU LI, FU XIAOGANG
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2020
• Subjects: FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The invention discloses a preparation method of a fluorine-free waterproof agent and the prepared fluorine-free waterproof agent, belongs to the technical field of fabric waterproof finishing agents,and solves the problem of poor processing stability. The preparation method of the fluorine-free waterproof agent comprises the steps: A, mixing an emulsifier a, ethanol a, water a and ethyl orthosilicate to obtain a mixture X; B, mixing an emulsifier b, ethanol b, water b and methyltriethylsiloxane to obtain a mixture Y; c, mixing the mixture X and the mixture Y, and adding a silane coupling agent and chloroplatinic acid to obtain a mixture Z; D, mixing alkyl acrylate, hydroxyethyl acrylate or hydroxypropyl acrylate and an emulsifier c to obtain a mixture M; E, mixing the mixture M and an initiator V-50 to obtain a mixture N; F, mixing the mixture Z, the mixture N and paraffin emulsion to obtain a mixture Q; and adding a pH regulator to obtain the fluorine-free waterproof agent, with theprocessing stability impro