1,1-BIS(4-HYDROXYPHENYL)-2-ETHYLHEXANE CAS:74462-02-5

Product Name:1,1-BIS(4-HYDROXYPHENYL)-2-ETHYLHEXANE

CAS: 74462-02-5

MF: C20H26O2

MW: 298.42

EINECS: 680-046-1

1,1-BIS(4-HYDROXYPHENYL)-2-ETHYLHEXANE Structure

Package:1kg,25kg

1.Chemical Properties and Functional Role

74462-02-5 is a high-performance organic pigment dispersing aid, classified as a surfactant derivative. Its molecular structure features lipophilic long-chain alkyl groups and hydrophilic sulfonic acid groups. This amphiphilic design enables multifunctional roles in ink systems:

Interfacial energy modulation: Adsorbs onto pigment particle surfaces, reduces solid-liquid interfacial energy, and enhances binder wetting efficiency, significantly increasing immersion work (Wᵢ).

Dispersion stability assurance: Suppresses pigment particle aggregation (especially high-surface-area nano-pigments), prevents “secondary particle” formation, and ensures ink shelf life exceeding 12 months.

2.Mechanism of Action in Inks

2.1 Optimization of Multiphase Dispersion Structure

Inks are fundamentally multiphase dispersion systems of pigment (solid phase) and binder (liquid phase). 74462-02-5 stabilizes the system through:

Oriented adsorption: Hydrophilic groups anchor to polar pigments (e.g., TiO₂, phthalocyanine blue), while lipophilic chains extend into organic binders, creating steric hindrance layers.

Charge repulsion: Sulfonic acid groups ionize to generate negative charges, enhancing interparticle electrostatic repulsion (particularly effective in water-based systems).

2.2 Resolving Compatibility Conflicts

When hydrophilic pigments (e.g., carbon black) interact with lipophilic binders (e.g., alkyd resins), elevated interfacial energy causes color separation or flocculation. Adding 0.5–1.5% 74462-02-5:

Reduces binder surface tension to ≤35 mN/m (below critical pigment surface tension, e.g., ~40 mN/m for carbon black);

Eliminates interfacial polarity conflicts via “molecular bridging,” increasing printed color strength by >20%.

3.Performance in Different Ink Systems

3.1 Eco-Friendly Water-Based Label Inks

Drying rate control: Synergizes with pH stabilizers to maintain pH 8–9.5 (optimal weak alkaline range), preventing thickener-induced viscosity spikes and ensuring printability.

VOC reduction: Replaces solvent-based dispersants, reducing VOC emissions by >80% and meeting food packaging label safety requirements.

3.2 Functional Conductive Inks

Critical role in nano-silver conductive inks:

Anti-oxidation barrier: Encapsulates Cu/Ag particles, blocking H₂O/O₂ ingress and extending conductivity retention;

Printing precision enhancement: Ensures uniform nanoparticle distribution (size ≈20 nm) on PET substrates, achieving resistivity fluctuation <5% for membrane switches/RFID antennas.

3.3 Paste Offset Inks

Rheology optimization: Reduces grinding energy consumption in high-viscosity systems (>10⁴ cP), increasing three-roll milling efficiency by 30%;

Dot reproduction: Prevents pigment migration during printing, ensuring color consistency in high-line-screen products (175 lpi).

4.Product photos and packaging photos

5. As a “molecular-scale mediator” in ink technology, 74462-02-5’s core value lies in overcoming interfacial energy barriers to enable multi-component synergy. With growing integration of green printing and electronic printing, this additive will evolve from a “functional enabler” to a “performance amplifier,” driving inks beyond passive coloration toward active functionality.