High-fire-retardancy aminoresin nano-complex-function tanning agent
An amino resin, nano-composite technology, applied in small raw hide/large raw hide/leather/fur treatment, tanning treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc., can solve the contribution of leather to moisture and heat stability It can not be used as a main tanning agent, can not be used as a flame retardant for leather, etc., to achieve the effects of good flame retardant performance, washing resistance and migration resistance, good selection and filling performance, and good tanning performance.
Examples
Embodiment 1
[0040] Add 3 parts of melamine, 5 parts of dicyandiamide and 10 parts of water into a reactor with a stirrer and a reflux condenser, stir and heat up to 75°C, and then dropwise add formaldehyde with a concentration of 37% and a pH value of 8.5 30 parts, after the dropwise addition, continue to react for 30 minutes, then lower the temperature to 20°C, add dropwise 10 parts of phosphoric acid (the concentration of industrial phosphoric acid is 85%, the same below), stir for 40 minutes, add 30 parts of water, and continue to stir for 20 minutes to obtain Flame-retardant amino resin prepolymer; after dispersing 1 part of natural montmorillonite in 10 parts of water with ultrasonic wave at 40°C for 30 minutes, first add 2 parts of tetrahydroxymethylphosphonium chloride (THPC), stir for 60 minutes, and then Add 1 part of γ-aminopropyltriethoxysilane, stir and react for 80 minutes to obtain modified montmorillonite; respectively prepare amino resin prepolymer and modified montmorillon...
Embodiment 2
[0042] Add 5 parts of melamine, 8 parts of dicyandiamide and 20 parts of water into a reactor with a stirrer and a reflux condenser, stir and heat up to 85°C, and then dropwise add formaldehyde with a concentration of 37% and a pH value of 8.0 40 parts, continue to react for 60 minutes after the dropwise addition, then lower the temperature to 35°C, add dropwise 13 parts of phosphoric acid, 2 parts of sulfamic acid and stir for 50 minutes, add 50 parts of water, continue to stir and react for 50 minutes to obtain a flame-retardant amino resin prepolymer 4 parts of organomontmorillonite modified with octadecyltrimethylammonium chloride were dispersed in 15 parts of water by ultrasonic waves at 45°C for 30 min, and then 2 parts of tetrakishydroxymethylphosphonium bromide (THPB ), stirring and reacting for 70min, then adding 2 parts of vinyltriethoxysilane, stirring and reacting for 60min, to obtain the modified organomontmorillonite; Stir and react at 60°C for 60 minutes, then a...
Embodiment 3
[0044] Add 6 parts of melamine, 9 parts of dicyandiamide and 30 parts of water into a reactor with a stirrer and a reflux condenser, stir and raise the temperature to 85°C, and then dropwise add formaldehyde with a concentration of 37% and a pH value of 9.0 70 parts, after the dropwise addition, continue to react for 40 minutes, then lower the temperature to 30°C, add 20 parts of phosphoric acid dropwise, stir for 60 minutes, add 60 parts of water, continue to stir for 30 minutes to obtain a flame-retardant amino resin prepolymer; After the natural montmorillonite is dispersed in 20 parts of water by ultrasonic waves at 50°C for 60 minutes, first add 5 parts of tetrakis hydroxymethyl phosphonium sulfate (THPS), stir and react for 80 minutes, then add 3 parts of vinyltrimethoxysilane, and stir for 60 minutes , to obtain modified montmorillonite; the amino resin prepolymer and modified montmorillonite prepared in the above steps were stirred and reacted at 70°C for 90 minutes, th...
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Description
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Application Information
- IPC
- C14C3/18; C08G12/32; C08L61/28; C08K9/06
- Inventors
- 李立新; 陈武勇