Waterborne polyurethane synthesized by waterborne polyester and preparation method of waterborne polyurethane
A water-based polyurethane and water-based polyester technology, applied in the chemical industry, can solve the problems of high price of dimethylol propionic acid and large amount of dimethylol propionic acid, and achieve the effect of improving bond strength and stress.
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Example Embodiment
[0049] Example 1
[0050] A water-based polyurethane synthesized from water-based polyester, based on parts by weight, and its formula is:
[0051] Name of raw material
[0052] Isoprenediol 10,
[0053] Diethylene glycol 34.8,
[0054] Polyethylene terephthalate 45,
[0055] Adipic acid 9.36,
[0056] Polyethylene glycol PEG40018.5,
[0057] Sodium m-phthalic acid sulfonate 8.9,
[0058] Sodium acetate 0.45,
[0059] Acetone 20,
[0060] Dihydroxyethyl propionic acid 7,
[0061] Isophorone diisocyanate 37,
[0062] Ethylenediamine 0.2,
[0063] Triethylamine 4.2,
[0064] Deionized water 250.
[0065] On a 1000 ml four-necked flask, install a stirring motor, a condenser, a condensation water collector, a nitrogen pipe, and a temperature controller, and then add diethylene glycol, isoprene glycol, and polyethylene terephthalate. After the PET is heated to 240-300°C and reacted until there are no solid particles, add adipic acid, polyethylene glycol PEG400, sodium isophthalic acid sulfonate and so...
Example Embodiment
[0066] Example 2
[0067] A water-based polyurethane synthesized from water-based polyester, based on parts by weight, and its formula is:
[0068] Name of raw material
[0069] Diethylene glycol 20.81,
[0070] Ethylene glycol 14.8,
[0071] Terephthalic acid 37,
[0072] M-phthalic acid 9,
[0073] Adipic acid 9.36,
[0074] Polyethylene glycol PEG400 18.5,
[0075] Sodium m-phthalic acid sulfonate 5.9,
[0076] Sodium acetate 0.45,
[0077] Acetone 0,
[0078] Dihydroxyethyl propionic acid 6.24,
[0079] Toluene diisocyanate 26.8,
[0080] Ethylenediamine 0.08,
[0081] Triethylamine 4.2,
[0082] Deionized water 250.
[0083] On a 1000 ml four-necked flask, install a stirring motor, a condenser, a condensed water collector, a nitrogen tube, and a temperature controller, and then add diethylene glycol, ethylene glycol, tere-phthalic acid, and m-phthalic acid. Formic acid, adipic acid, polyethylene glycol PEG400, sodium isophthalic acid sulfonate and sodium acetate, heat up to 180-260℃ to react ...
Example Embodiment
[0084] Example 3
[0085] A water-based polyurethane synthesized from water-based polyester, based on parts by weight, and its formula is:
[0086] Name of raw material
[0087] Isoprenediol 10,
[0088] Diethylene glycol 34.8,
[0089] Polyethylene terephthalate 45,
[0090] Adipic acid 9.36,
[0091] Polyethylene glycol PEG40018.5,
[0092] Sodium m-phthalic acid sulfonate 8.9,
[0093] Sodium acetate 0.45,
[0094] Acetone 40,
[0095] Dihydroxyethyl propionic acid 6,
[0096] Diphenylmethane diisocyanate 37,
[0097] Ethylenediamine 0.2,
[0098] Triethylamine 4.2,
[0099] Deionized water 250.
[0100] On a 1000 ml four-necked flask, install a stirring motor, a condenser, a condensation water collector, a nitrogen tube, and a temperature controller, and then add diethylene glycol, isoprene glycol, and polyethylene terephthalate. After the PET is heated to 240-300°C and reacted until there are no solid particles, add adipic acid, polyethylene glycol PEG400, sodium isophthalic acid sulfonate a...
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