Anacardol polyoxyethylene ether, preparation method thereof, phosphorus-free laundry tablet prepared by same and preparation method of phosphorus-free laundry tablet
A technology of cardanol polyoxyethylene ether and cardanol, which is applied in the directions of detergent powder/sheet/sheet, detergent composition, detergent compounding agent, etc., can solve environmental pollution, complex production steps, and production process control. Difficulty and other problems, to achieve the effect of easy portability
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Embodiment 1
[0033] Preparation of cardanol polyoxyethylene ether nonionic surfactant:
[0034] (1) Add 1560g of cardanol (hydroxyl value 203mgKOH / g) and 6.37g of NaOH to the pressure-resistant reactor, replace the air in the kettle with pure nitrogen, raise the temperature to 125°C, vacuumize to -0.09MPa, and time it for 1h, Then slowly add 6406g of ethylene oxide dropwise, and continue to react for 1h after the addition; then vacuumize to remove unreacted residual monomers, cool down to 110°C and transfer to a post-treatment tank.
[0035] (2) Add citric acid aqueous solution (638g of deionized water is warmed up to 90°C, then add 8.92g of citric acid monohydrate, and stir until citric acid is completely dissolved) into the post-treatment kettle, stir for 45min, then heat up to 135°C, Timed for 0.5h, then dehydrated under vacuum for 2h, circulated and filtered to obtain a milky white solid, namely the target product.
[0036] After analysis, cardanol polyoxyethylene ether was obtained, ...
Embodiment 2
[0045] Preparation of cardanol polyoxyethylene ether nonionic surfactant:
[0046] (1) Add 1950g of cardanol (hydroxyl value 203mgKOH / g) and 6.48g of NaOH to the pressure-resistant reactor, replace the air in the kettle with pure nitrogen, raise the temperature to 120°C, vacuumize to -0.09MPa, and time it for 1.5h , and then slowly drop 6149g of ethylene oxide, and continue to react for 2h after the addition; then vacuumize to remove unreacted residual monomers, cool down to 112°C and transfer to the post-treatment tank.
[0047] (2) Add citric acid aqueous solution (648g of deionized water is warmed up to 80°C, then add 9.1g of citric acid monohydrate, and stir until citric acid is completely dissolved) into the post-treatment kettle, stir for 30min, then heat up to 130°C, Timed for 1.0 h, then vacuum dehydrated for 3 h, and circulated and filtered to obtain a light brown colloid, namely the target product.
[0048] After analysis, cardanol polyoxyethylene ether was obtained...
Embodiment 3
[0057] Preparation of cardanol polyoxyethylene ether nonionic surfactant:
[0058] (1) Add 2340g of cardanol (hydroxyl value: 203mgKOH / g) and 6.4g of NaOH to the pressure-resistant reactor, replace the air in the kettle with pure nitrogen, raise the temperature to 130°C, vacuumize to -0.09MPa, and count for 2h, Then slowly add 5700g of ethylene oxide dropwise, and continue to react for 3 hours after the addition; then vacuumize to remove unreacted residual monomers, cool down to 115°C and transfer to a post-treatment tank.
[0059] (2) Add citric acid aqueous solution (644g deionized water is warmed up to 100°C, then add 9.1g citric acid monohydrate, stir until citric acid is completely dissolved) into the post-treatment kettle, stir for 90min, then heat up to 140°C, Time it for 0.5h, then vacuumize and dehydrate for 4h, and circulate and filter to obtain a light yellow liquid, that is, the target product.
[0060] After analysis, cardanol polyoxyethylene ether was obtained, ...
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