Esters of aromatic alkoxylated alcohols and fatty carboxylic acids
A hydrocarbon-based, compound-based technology, used in cosmetics and personal care products, can solve problems such as poor solubility/dispersibility, poor solubility/dispersibility, uneven dispersion of active ingredients, etc.
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Embodiment 1
[0324] Embodiment 1. prepares PPG-3 benzyl ether
[0325] 2297.75 grams (21.24 moles) of benzyl alcohol were placed in a dry, stirred pressure vessel fitted with a nitrogen inlet. A catalytic amount (6 g) of 40% aqueous KOH was added. Nitrogen was bubbled through the vessel and heated to 110°C. A vacuum was applied for 1 hour to remove water vapor from the headspace of the vessel and the mixture was further heated to 130°C. After addition of 3702.25 grams (63.74 moles) of propylene oxide, the reaction mixture was stirred for 3 hours to complete the reaction. The progress of the reaction is monitored by uptake of the reagents and by measuring the pressure in the vessel. The reaction mixture was cooled to 110°C and vacuum was applied for about 1 hour. 29 grams of 25% sulfuric acid were added to neutralize the KOH in the reaction mixture. The mixture was stirred for 10 minutes and the pH was adjusted to 5.7. After cooling, the main product, PPG-3 benzyl ether, was isolated ...
Embodiment 2
[0326] Example 2. Preparation of PPG-3 benzyl myristate
[0327] In a four-necked flask with mechanical stirrer, thermometer and nitrogen inlet, 342.44 g (1.19 mol) of PPG-3 benzyl ether, 221 g (1.13 mol) of myristic acid and 0.45 g of SnO were charged. The mixture was heated to 220°C. The progress of the reaction was monitored by measuring the acidity value of the reaction mixture over time. After the acidity value stabilized, the mixture was cooled to 25°C. Add 0.9 g of 30% HO 2 o 2 solution and 70 g of water, and the mixture was again heated to 75°C. The water was evaporated under vacuum to give PPG-3 benzyl myristate as the main product.
Embodiment 3
[0328] Embodiment 3. preparation two-(PPG-4) bisphenol A ether
[0329] 1233.86 grams (5.40 moles) of bisphenol A and 1445 milliliters of toluene were placed in a clean, dry, stirred pressure vessel tank with nitrogen inlet. Bubble nitrogen into the vessel and add a catalytic amount (4.86 g) of BF 3 / etherate solution. The temperature was raised to 110°C, and 2511.29 grams (43.24 moles) of propylene oxide was added at a constant rate, keeping the pressure in the vessel below 50 psi. After all the propylene oxide had been added, the reaction mixture was warmed up to 150° C. and reacted for another 3 hours, then the toluene was distilled off under a nitrogen sparge. The temperature was then lowered to 110°C and a vacuum was applied for 1 hour.
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