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Functional Chemical CA-95 Sodium 2-[(2-aminoethyl)amino]ethanesulphonate

Functional Chemical CA-95 Sodium 2- [(2- aminoethyl) amino] ethanesulphonate

Description

CA-95 is an aqueous solution of a sodium salt of an amino functional sulfonic acid. It contains a primary and a secondary amino group and combines the properties of an emulsifier and a chain extender in the production of aqueous PUR/water based polyurethane (WPU) dispersions.

Type

Sodium salt of an amino functional sulfonic acid

Appearance  

Colorless or yellowish solid 

Solid content (%)

51±1

Density (g/cm3)

1.225

pH (20g/L water, 20℃)

11-12

Viscosity (cp, 25℃)

<20

Amine number (mg KOH/g)

260±10

CAS No.  

34730-59-1

MF

C4H11N2NaO3S

APPLICATION

The chain extender for PUR/water based polyurethane (WPU) dispersions

这里可以自定义设置

Storage and Handling

Raw material and dosage

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

这里可以自定义设置

Experimental process

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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