A kind of synthetic method of organosilicon modified waterborne polyurethane resin
A water-based polyurethane and synthesis method technology, applied in the field of resin synthesis, can solve the problems of affecting resin adhesion, short service life, inconvenience, etc., achieve mature and stable production process, prevent uneven stirring, and prevent viscosity increase.
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Embodiment 1
[0030] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:
[0031] Equipped with raw materials:
[0032] raw material
Dosage (% by weight)
2,4-Toluene diisocyanate
32.8
Polyester polyol Novomer (molecular weight 1000)
43.5
Dimethylolpropionic acid
5.9
Methylpropanediol
3.4
Trimethylolpropane
4.9
Triethylamine
4.5
KH550
5
[0033] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;
[0034] The molecular weight of polyester polyol Novomer is about 1000, the carboxyl content is about 3%, and the silicone content is about 1%. The molar ratio is as follows: 2,4-toluene diisocyanate: polyester polyol Novomer: dimethylol propionic acid : Methylpropanediol: Trimethylolpropane: Triethylamine: KH550 is about 3.8:1.0:1.0:0.8:1.2:1.0:1.3.
[0035] The appearance of the prepared resin is a translucent yellowi...
Embodiment 2
[0037] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:
[0038] Equipped with raw materials:
[0039] raw material
Dosage (% by weight)
Isophorone diisocyanate
33.6
Polyester polyol Novomer (molecular weight 1000)
43.5
Dimethylolpropionic acid
5.9
Neopentyl glycol
5.5
Trimethylolpropane
2.6
Triethylamine
4.5
KH550
3
Ethylenediamine
1.4
[0040] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;
[0041] The molecular weight of polyester polyol Novomer is about 1000, the carboxyl content is about 4.2%, and the silicone content is about 1.2%. The molar ratio is as follows: isophorone diisocyanate: polyester polyol Novomer: dimethylol propionic acid: Neopentyl glycol: trimethylolpropane: triethylamine: KH550: ethylenediamine is about 3.6:1.0:1.0:0.8:1.2:1.0:1.3:0.3.
[0042] The appeara...
Embodiment 3
[0044] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:
[0045] Equipped with raw materials:
[0046] raw material
Dosage (% by weight)
Isophorone diisocyanate
35.2
Polyester polyol Novomer (molecular weight 2000)
40.3
Dimethylolpropionic acid
6.5
1,4-Butanediol
4.6
Trimethylolpropane
2.6
Triethylamine
5
KH602
3
isophorone diamine
2.8
[0047] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;
[0048] The molecular weight of polyester polyol Novomer is about 2000, the carboxyl content is about 5.1%, and the silicone content is about 1.7%. The molar ratio is as follows: isophorone diisocyanate: polyester polyol Novomer: dimethylol propionic acid: 1,4-Butanediol: Trimethylolpropane: Triethylamine: KH602: Isophoronediamine is about 3.8:1.0:1.0:1.5:1.2:1.0:1.3:0.7.
[0049] The appearan...
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