Sulfonate-functional polyester polyols
A technology of sulfonate functional polyester polyol, applied in the field of polyester polyol, which can solve the problems affecting the dispersion performance and disadvantages of polyurethane
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Embodiment 1
[0065] The preparation of embodiment 1-unsaturated polyol
[0066] A 4-neck glass reaction vessel equipped with a water-cooled distillation condenser, thermocouple and mechanical stirrer and containing 166.7 g of maleic anhydride and 401.8 g of 1,6-hexanediol was heated to 155° C. in 30 minutes under a sparge of dry nitrogen. ℃. Then, add 0.227 to the reactor by ElfAtochemNorth America, Inc., philadelphia, PA to Fascat TM 4100 sold as butyltin oxide hydroxide catalyst. The heat was gradually increased to 200°C over 30 minutes and a total of 32.37 grams of water was collected by distillation.
Embodiment 2
[0067] Example 2 - Preparation of Sulfonate Functional Polyols
[0068] The reaction product of Example 1 was cooled to 111°C. Then 176.90 grams of anhydrous sodium bisulfite (NaHSO 3 ) in 420.25 grams of distilled water was added to the reaction vessel. The nitrogen sparge was interrupted and the mixture was heated to 80°C and held at this temperature for 20 hours. Then, heating of the mixture was resumed to gradually increase the temperature to 167°C. Above 160°C, water distilled off and after 2 hours, 393.44 grams of water distilled from the top. The temperature of the mixture was lowered to 150°C and it was placed under a vacuum gradually decreasing to 8mmHg. Another 11.0 grams of water distilled off after 15 minutes. The mixture was drained into a storage container at 125-150°C.
Embodiment 3
[0069] Preparation of Example 3-Sulfonate Functional Polyester Polyol
[0070] The reaction product from Example 2 (639.2 grams of it) was placed in a 5-liter 4-neck reaction flask, and 2392.6 grams of ε-caprolactone (TONE from Dow Chemical Company) was added thereto. TM ECEQ monomer). The mixture was heated at 85° C. with stirring under a vacuum of 12 mm Hg and a dry nitrogen vent for 45 minutes to remove moisture. The mixture was heated to 140°C over 30 minutes and 9.12 grams of dibutyltin dilaurate (Dabco® from AirProducts and Chemicals, Inc., Allentown, PA) were added via syringe. TM T-12) 1% by weight solution in TONEECEQ monomer. The consumption of caprolactone was followed by gas chromatography throughout the reaction. The reaction mixture was heated at 140°C for 24 hours, followed by the addition of 0.0934 grams of stannous octoate catalyst (Dabco T-9). Heating was continued for an additional 45 hours. The temperature was gradually increased to 160°C and heated f...
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Abstract
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