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CN-121991563-A - Enhanced waterproof and oil-proof treating agent and preparation method thereof

CN121991563ACN 121991563 ACN121991563 ACN 121991563ACN-121991563-A

Abstract

The invention relates to the technical field of waterproof and oil-proof agents and provides an enhanced waterproof and oil-proof treating agent and a preparation method thereof, wherein the waterproof and oil-proof treating agent comprises, by weight, 30-50 parts of silane monomers, 15-30 parts of functional monomers, 1-5 parts of crosslinking monomers, 1-4 parts of alkaline substances, 0-3 parts of anionic surfactants, 0.5-0.8 part of initiators, 0-0.3 part of molecular weight control agents, 100-200 parts of organic solvents, 200-300 parts of deionized water and 1-5 parts of synergists. The enhanced waterproof and oilproof treating agent provided by the invention is fluorine-free and has high-efficiency waterproof and oilproof performance.

Inventors

  • YANG LEI
  • KANG GUANG
  • XU JIAYUN

Assignees

  • 开翊新材料科技（上海）有限公司

Dates

Publication Date
20260508
Application Date
20260206

Claims (10)

  1. 1. The enhanced waterproof and oil-proof treating agent is characterized by comprising, by weight, 30-50 parts of silane monomers, 15-30 parts of functional monomers, 1-5 parts of crosslinking monomers, 1-4 parts of alkaline substances, 0-3 parts of anionic surfactants, 0.5-0.8 part of initiators, 0-0.3 part of molecular weight control agents, 100-200 parts of organic solvents and 200-300 parts of deionized water; Wherein the silane monomer is CH 2 =C(-R)-COO-X-Si-R 1 (R 2 ) 2 , wherein R is H or CH 3 , X is a C1-C10 aliphatic group, R 1 is one of CH 3 、OCH 3 、OSi(CH 3 ) 3 、OSiH((CH 3 ) 2 、OCH 2 CH 3 , and R 2 is one of OCH 3 、OSi(CH 3 ) 3 、OSiH((CH 3 ) 2 、OCH 2 CH 3 .
  2. 2. The enhanced water and oil repellent treatment according to claim 1, wherein the functional monomer is at least one of acrylic acid, methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, vinylsulfonic acid, vinylbenzenesulfonic acid.
  3. 3. The enhanced water and oil repellent treatment according to claim 1, wherein the crosslinking monomer is at least one of glycidyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, hexanediol dimethacrylate, divinylbenzene, alkyl acrylate phosphate, methacryloxyethyl phosphate.
  4. 4. The enhanced water and oil repellent treatment according to claim 1, wherein said basic substance is triethylamine.
  5. 5. The enhanced water and oil repellent treatment according to claim 1, wherein the preparation method of the anionic surfactant comprises the steps of: (1) Adding tetraethylenepentamine and bromododecane into a reaction vessel, adding absolute ethyl alcohol, stirring, filtering, washing, recrystallizing, filtering and drying to obtain an intermediate product for later use; (2) Mixing the intermediate product of the step (1) with 3-chlorine-2-hydroxy sodium propane sulfonate, adding triethylamine and absolute ethyl alcohol, stirring for 3-4h at 85-95 ℃, washing, and drying to obtain the anionic surfactant.
  6. 6. The enhanced water and oil repellent treatment according to claim 5, wherein the molar ratio of tetraethylenepentamine, monobromododecane, and sodium 3-chloro-2-hydroxypropyl sulfonate is 1 (2-2.6) (5-5.2).
  7. 7. The enhanced water and oil repellent treatment according to claim 1, further comprising 1 to 5 parts by weight of a synergist.
  8. 8. The enhanced water and oil repellent treatment according to claim 7, wherein the method for preparing the enhancer comprises the steps of: 1) Mixing 2-phenylhex-5-enoic acid and acrylonitrile, adding concentrated sulfuric acid at 0-5 ℃, stirring, adding deionized water, extracting an organic layer with diethyl ether, washing, drying, suction filtering, and recrystallizing to obtain a product for later use; 2) Mixing the product of the step 1) with acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and deionized water, adjusting the pH value to be 8-9, introducing inert gas, adding ammonium persulfate, reacting for 8-10 hours at 50-60 ℃, adding absolute ethyl alcohol, filtering, adding acetone, soaking and drying to obtain the synergist.
  9. 9. The enhanced water-and oil-repellent treatment according to claim 8, wherein in the step 2), the mass ratio of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and the product is 1 (0.2-0.4): 0.5-1.
  10. 10. A method of preparing the enhanced water-and oil-repellent treatment of any one of claims 7 to 9, comprising the steps of: Mixing a silane monomer, a functional monomer, a crosslinking monomer, a synergistic agent, an initiator, a molecular weight control agent and an organic solvent, stirring, introducing nitrogen, heating to 60-70 ℃, reacting for 20-24 hours, adding an alkaline substance, reacting for 1-1.5 hours, adding an anionic surfactant and deionized water, and performing rotary evaporation to obtain the waterproof and oil-proof treating agent.

Description

Enhanced waterproof and oil-proof treating agent and preparation method thereof Technical Field The invention relates to the technical field of waterproof and oil-proof agents, in particular to an enhanced waterproof and oil-proof treating agent and a preparation method thereof. Background The waterproof and oil-proof treating agent is a functional chemical which can obviously reduce the wettability of the surface to water and oil after being coated on the surface of a material, so that water drops and oil drops are not easy to spread, permeate or adhere, has the functions of prolonging the service life of the material and reducing the comprehensive cost, and has wide application in the surface treatment field of stone, wood, cement and concrete, gypsum, paper and paper products, textile fabrics, non-woven fabrics, leather and other substrates. The main current water-proof and oil-proof treatment agent on the market at present is compounded by fluorocarbon resin and a cationic surfactant system, but has the following two main problems that on one hand, fluorine-containing substances are not environment-friendly and gradually eliminated along with the gradual enhancement of environmental awareness of people, on the other hand, the cationic surfactant has the problem of poor emulsion stability, and the cationic surfactant is easy to be neutralized with residual anionic desizing agent, brightening agent, dye and the like on the cloth surface to generate insoluble floccules, so that the adsorption quantity of the water-proof and oil-proof agent is reduced, and the application universality of the water-proof and oil-proof agent is greatly reduced. In addition, although the addition of the surfactant can provide the water-and oil-repellent treatment agent with good dispersion, wetting and stability, the hydrophilic group therein may deteriorate the water-and oil-repellent performance of the treatment agent to some extent. Patent CN 110004721A discloses a preparation method of a long-acting cotton fabric waterproofing agent, which comprises methyl methacrylate, butyl acrylate, an initiator, a mixed emulsifier, a surfactant and the like, wherein the surfactant is any one of sodium dodecyl benzene sulfonate, alkylphenol ethoxylates or sodium dodecyl sulfate, and although the waterproofing agent does not contain fluorine and other non-environment-friendly components, the problem that the overall waterproofing performance of the waterproofing agent is possibly poor due to the hydrophilic groups of the surfactant is not solved. Therefore, there is a need in the market for an enhanced water and oil repellent treatment that is fluorine free and has high performance in water and oil repellency. Disclosure of Invention Aiming at the problems in the prior art, the invention discloses an enhanced waterproof and oil-proof treating agent, which is designed to be added with an anionic surfactant and a synergistic agent and matched with silane monomers, functional monomers, crosslinking monomers, initiators, molecular weight control agents and other substances, so that the enhanced waterproof and oil-proof treating agent is fluorine-free and has high-efficiency waterproof and oil-proof performance. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The invention provides an enhanced waterproof and oil-proof treating agent which comprises, by weight, 30-50 parts of silane monomers, 15-30 parts of functional monomers, 1-5 parts of crosslinking monomers, 1-4 parts of alkaline substances, 0-3 parts of anionic surfactants, 0.5-0.8 part of initiators, 0-0.3 part of molecular weight control agents, 100-200 parts of organic solvents and 200-300 parts of deionized water; Wherein the silane monomer is CH 2=C(-R)-COO-X-Si-R1(R2)2, wherein R is H or CH 3, X is a C1-C10 aliphatic group, R 1 is one of CH3、OCH3、OSi(CH3)3、OSiH((CH3)2、OCH2CH3, and R 2 is one of OCH 3、OSi(CH3)3、OSiH((CH3)2、OCH2CH3. In some embodiments of the invention, the functional monomer is at least one of methacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, vinylsulfonic acid, vinylbenzenesulfonic acid. In some embodiments of the invention, the crosslinking monomer is at least one of glycidyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, hexanediol dimethacrylate, divinylbenzene, alkyl acrylate phosphate, methacryloxyethyl phosphate. In some embodiments of the invention, the basic substance is triethylamine. In some embodiments of the present invention, the method of preparing the anionic surfactant comprises the steps of: (1) Adding tetraethylenepentamine and bromododecane into a reaction vessel, adding absolute ethyl alcohol, stirring, filtering, washing, recrystallizing, filtering and drying to obtain an intermediate product for later use; (2) Mixing the intermediate product of the step (1) with 3-chlo