ZG-X22T Mono-End Diol-Functional Polydimethylsiloxane
ZG-X22T integrates two primary hydroxyl groups (a diol structure) at one end of the PDMS chain, while the other end is a non-reactive capping group. The chain-end hydroxyls can react with isocyanates and, under suitable esterification/polycondensation conditions, can participate in reactions with polyester and other resins, chemically incorporating PDMS segments into the polymer. Compared with double-end hydroxypropyl PDMS, this product concentrates both hydroxyls at the same chain end, making it better suited for forming pendant-type siloxane structures and reactive surface functionalization.
Product positioning: pendant-type PDMS flexible segment for introducing PDMS flexible segments into PU/PUD/TPU, polyester and reactive coatings and for tuning surface properties
Product Features
Reactive Flexible Segment
PDMS segments are chemically incorporated into the resin system via hydroxyl reaction, helping reduce the migration, exudation and insufficient durability risks of ordinary silicone oils
Flexibility and Stress Relief
Improves softness, resilience, slip, hydrophobicity, anti-blocking, stain resistance and friction performance, and helps relieve internal stress in the system
High Reaction Efficiency
Low-molecular-weight grades have higher hydroxyl density and more pronounced reaction efficiency, suitable for systems requiring high reaction participation
Pronounced Surface Effect
High-molecular-weight grades show a more pronounced PDMS surface effect, but require reinforced compatibility evaluation
Typical Technical Specifications
| Model | Nominal Mn (g/mol) | Viscosity (25°C, mPa·s) | Hydroxyl Equivalent (g/eq) | Hydroxyl Content (mmol/g) | Hydroxyl Value (mg KOH/g) |
|---|---|---|---|---|---|
| ZG-X22T-650 | 650 | 30-50 | 325 | 3.077 | 172.62 |
| ZG-X22T-2000 | 2000 | 80 | 1000 | 1.000 | 56.10 |
| ZG-X22T-2500 | 2500 | 55 | 1250 | 0.800 | 44.88 |
| ZG-X22T-3000 | 3000 | 60 | 1500 | 0.667 | 37.40 |
| ZG-X22T-3500 | 3500 | 75 | 1750 | 0.571 | 32.06 |
| ZG-X22T-4000 | 4000 | 135 | 2000 | 0.500 | 28.05 |
| ZG-X22T-5000 | 5000 | 165 | 2500 | 0.400 | 22.44 |
| ZG-X22T-10000 | 10000 | 350-500 | 5000 | 0.200 | 11.22 |
Note: Nominal Mn is a grade reference. Technical specifications are typical values; the actual batch is subject to the COA.
Applications and Recommended Dosage
| Application System | Recommended Dosage | Recommended Usage |
|---|---|---|
| PU/PUD/TPU | 0.5%-3.0% | 0.5%-3.0% of resin solids |
| PU Elastomers, Adhesives | 1.0%-5.0% | 1.0%-5.0% of the resin or polyol component |
| Polyester/Silicone-Modified Resins | 0.5%-3.0% | 0.5%-3.0% of resin solids |
| Synthetic Leather, Textiles and Functional Coatings | 0.2%-2.0% | 0.2%-2.0% of resin solids |
Compatibility Reference
| Resin System | Compatibility | Notes |
|---|---|---|
| Polyurethane (PU/PUD/TPU) | Excellent | Hydroxyl reacts with isocyanate for chemical incorporation |
| Polyester Resin | Good | Can participate in esterification/polycondensation under suitable conditions |
| Acrylate Resin | Moderate | Compatibility needs evaluation; pre-trials recommended |
| Epoxy Resin | Moderate | Compatibility needs evaluation; pre-trials recommended |
| Waterborne Systems | Good | Low-molecular-weight grades offer better compatibility |
Note: Compatibility is a general reference. Actual results are affected by the resin system, solvent, process conditions and other factors; pre-trials are recommended for confirmation.
Packaging, Storage and Safety
Packaging:25 kg, 50 kg, 200 kg plastic drums
Storage:Keep containers sealed and store in a cool, dry, ventilated place at 5-35°C, away from moisture and direct sunlight
Shelf Life:Recommended shelf life of 12 months in unopened conditions