Active methylene group modified waterborne polyurethane adhesive
A technology of water-based polyurethane and active methylene, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of slow drying speed, poor water resistance, and poor chemical resistance, and achieve dryness The effects of increased speed, good water resistance, and a wide range of raw material sources
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Examples
Embodiment 1
[0014] Prepare raw materials according to the following parts by mass: 30 parts of isophorone diisocyanate; 30 parts of polycaprolactone diol; 15 parts of DMPA; 15 parts of linoleic acid; 25 parts of dimethyl isophthalate-5-sodium sulfonate 35 parts of neoglutaric acid; 12 parts of trimethylolpropane; 0.2 part of catalyst diethylbutyltin dilaurate;
[0015] Mix and stir neoglutaric acid and dimethyl isophthalate-5-sodium sulfonate, heat to 230°C for 5 hours, cool down to 180°C, add DMPA, continue to increase the temperature to 220°C, and remove water under reduced pressure for 30 minutes to obtain Water-soluble polyester polyol;
[0016] Mix linoleic acid and trimethylolpropane, add a catalyst, and react for 5 hours at 200°C under nitrogen to obtain active methylene oil;
[0017] Heat and mix water-soluble polyester polyol and polycaprolactone diol, dehydrate at 100°C and 200Pa vacuum for 1 hour, cool down to 50°C, add isophorone diisocyanate, react at 80°C fo...
Embodiment 2
[0019] Prepare raw materials according to the following parts by mass: 40 parts of isophorone diisocyanate; 30 parts of polycaprolactone diol; 12 parts of DMPA; 20 parts of linoleic acid; 30 parts of dimethyl isophthalate-5-sodium sulfonate ; 40 parts of neoglutaric acid; 15 parts of trimethylolpropane; 0.1 part of catalyst diethylbutyltin dilaurate;
[0020] Mix and stir neoglutaric acid and dimethyl isophthalate-5-sodium sulfonate, heat to 230°C for 5 hours, cool down to 180°C, add DMPA, continue to increase the temperature to 220°C, and remove water under reduced pressure for 30 minutes to obtain Water-soluble polyester polyol;
[0021] Mix linoleic acid and trimethylolpropane, add a catalyst, and react for 5 hours at 200°C under nitrogen to obtain active methylene oil;
[0022] Heat and mix water-soluble polyester polyol and polycaprolactone diol, dehydrate at 100°C and 200Pa vacuum for 1 hour, cool down to 50°C, add isophorone diisocyanate, react at 80°C ...
Embodiment 3
[0024] Prepare raw materials according to the following parts by mass: 50 parts of isophorone diisocyanate; 20 parts of polycaprolactone diol; 10 parts of DMPA; 10 parts of linoleic acid; 20 parts of dimethyl isophthalate-5-sodium sulfonate ; 35 parts of neoglutaric acid; 10 parts of trimethylolpropane; 0.5 part of catalyst diethylbutyltin dilaurate;
[0025] Mix and stir neoglutaric acid and dimethyl isophthalate-5-sodium sulfonate, heat to 230°C for 5 hours, cool down to 180°C, add DMPA, continue to increase the temperature to 220°C, and remove water under reduced pressure for 30 minutes to obtain Water-soluble polyester polyol;
[0026] Mix linoleic acid and trimethylolpropane, add a catalyst, and react for 5 hours at 200°C under nitrogen to obtain active methylene oil;
[0027] Heat and mix water-soluble polyester polyol and polycaprolactone diol, dehydrate at 100°C and 200Pa vacuum for 1 hour, cool down to 50°C, add isophorone diisocyanate, react at 80°C ...
PUM
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