Name: Amino-Functional Silicone Oil ASO-20
Brand: Coatingsink
SKU: amino-silicone-oil-aso
Availability: InStock

Question 1

How does the amine equivalent weight (AEW) of 3500 g/mol affect softness performance in textile finishing?

Accepted Answer

AEW indicates the molecular weight per reactive amine group. At 3500 g/mol, ASO-20 provides a balanced softness-to-yellowing ratio: lower AEW (more amine) gives enhanced softness and adhesion but increases yellowing risk under heat and UV; higher AEW reduces both effects. This grade is well-suited for light-colored and white fabrics where yellowing must be minimized.

Question 2

Can Amino Silicone Oil ASO-20 be formulated into a stable waterborne emulsion for padding applications?

Accepted Answer

Yes. ASO-20 can be self-emulsified under acidic conditions (pH 4–5) using acetic acid to protonate the amine groups, or co-emulsified with nonionic and cationic surfactants. Stable micro-emulsions with particle size below 200 nm are achievable. For exhaust dyebath application, cationic emulsions improve substantivity to negatively charged cellulosic fibers.

Question 3

What crosslinking systems are compatible with Amino Silicone Oil ASO-20 for durable water repellency?

Accepted Answer

The primary amine groups react with epoxy crosslinkers, blocked isocyanates, and methylated melamine-formaldehyde resins (e.g., DMDHEU blends) during the curing step at 140–170°C. Epoxy-functional silicone crosslinkers are particularly effective for building wash-durable hydrophobicity while retaining hand feel.

Appearance	Clear to pale yellow liquid
Density (25°C)	0.978 g/ml
Nitrogen Content	0.4–0.6%
Viscosity (25°C)	180–250 cSt
Amine Equivalent Weight	3500 g/mol

Amino-Functional Silicone Oil ASO-20

Specifications

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