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CA-99 Water soluble solid sulfonate chain extender
Description
CA-99 is a sulfonate diamine with sulfonic acid functional group chain extender for making high performance, high solid content Isocyanate crosslinker.
Appearance | White powder |
Purity (%) | >99.5 |
pKa | 10.4 |
Molecular weight | ~218 |
Loss on drying (%) | <0.5 |
Residue on Ignition (%) | <0.1 |
Chloride (Cl, %) | <0.05 |
Sulphate (SO42-, %) | <0.005 |
Heavy metal (Pb, %) | <0.0005 |
Key Features
Chemical name | Dosage |
Isophorone diisocyanate (IPDI) | 71.0g |
Polyester type polyol (Mw: 1000) | 160.0g |
Dimethylol Propionic Acid (DMPA) | 1.2g |
1,4-butanediol | 6.95g |
CA-95 | 11.8g |
Triethylamine (TEA) | 0.91g |
Ethanediamine | 2.23g |
Acetone | ~440g |
Catalyst | ~0.6g |
Step-1
Add (1)IPDI 71.0g, (2)Polyester type polyol 160.0g, (3)DMPA 1.2g, (4)Catalyst 0.6g and (5) Acetone 30g in 1000ml three-necked flask.
Step-2
Then stir them (150-300rpm) and heat it till 75℃ for 2hours.
Step-3
After cooled to 50 ℃, add 1,4-butanediol 6.95g+acetone 10g. Then heat up till 70℃ for 3hours.
Step-4
Cooled to less than 50℃，then add acetone 400g, TEA 0.91g and CA-95 11.8g. Heat up till 50℃ for 10min.
Step-5
Cooled to less than 40℃，emulsify it by adding ethanediamine aqueous (ethanediamine 2.23g+water 12g) and then water 300g.
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