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Chemical Name: α,ω-Dihydroxy-Terminated Polydimethylsiloxane
CAS Number: 70131-67-8
EINECS Number: 615-070-3
Keywords: Hydroxyl Silicone Oil, Silanol-Terminated Polydimethylsiloxane, OH-Terminated PDMS, Silicone Oil for Resin Modification, Anti-Stain Coating Additive, Silicone Modifier for Polyurethane
IOTA 2110 is a double-ended hydroxyl silicone oil based on α,ω-dihydroxy-terminated polydimethylsiloxane (PDMS). It is designed for use as a reactive silicone modifier in selected resin systems and surface treatment formulations.
Featuring a colorless, viscous liquid appearance and an active content of 99.9%, IOTA 2110 provides reactive hydroxyl end groups that can participate in suitable chemical reactions with compatible resin systems. This makes it a potential ingredient for introducing silicone segments into polymer structures and modifying surface properties.
Compared with conventional silicone additives that primarily provide physical surface effects, hydroxyl-terminated PDMS offers an additional formulation option when chemical incorporation of silicone segments is desired. The actual bonding mechanism and final performance depend on the resin chemistry, curing conditions, catalysts and formulation design.
| Parameter | Specification |
|---|---|
| Product name | IOTA 2110 |
| Chemical name | α,ω-Dihydroxy-Terminated Polydimethylsiloxane |
| Appearance | Colorless, viscous liquid |
| Active content | 99.9% |
| CAS number | 70131-67-8 |
| EINECS number | 615-070-3 |
| Available molecular weights | 1,000 / 2,000 / 2,500 / 10,000 |
| Formulation types | Water-based and solvent-based systems, subject to compatibility testing |
The available molecular weight options allow formulators to evaluate different grades according to their requirements for viscosity, processing, compatibility and final coating properties.
The terminal hydroxyl groups of IOTA 2110 can participate in appropriate condensation or other compatible reaction pathways. Depending on the formulation, this may help incorporate silicone segments into a resin network and modify the properties of the resulting material.
Silicone modification can help create a smoother, more pleasant surface feel in compatible coating and polymer systems. IOTA 2110 is suitable for evaluation in formulations targeting a durable, silky or slip-enhanced finish.
Introducing silicone components into selected resin systems may help adjust surface energy and reduce the adhesion of certain contaminants. Actual stain resistance depends on the coating composition, substrate, curing process and test conditions.
Siloxane structures are valued in many applications for their characteristic thermal and environmental performance. When incorporated into a compatible resin system, IOTA 2110 may help improve selected weathering or low-temperature properties. Performance should be confirmed through application-specific testing.
IOTA 2110 can be evaluated as a silicone modifier in compatible polyurethane formulations. Formulators should verify hydroxyl-group reactivity, stoichiometry and curing requirements before use.
In suitable amino resin formulations, hydroxyl-terminated silicone oil may be investigated for its potential to modify surface characteristics and coating feel. Compatibility and reaction behavior depend on the specific resin chemistry and processing conditions.
IOTA 2110 is suitable for evaluation in coatings where improved surface smoothness, stain resistance and long-lasting tactile properties are desired.
The product can serve as a functional silicone intermediate for developing modified polymers and resin systems. Its suitability depends on the required molecular weight, reaction mechanism and target material properties.
The following dosage ranges are provided as initial formulation guidelines:
| Application objective | Recommended dosage |
|---|---|
| Long-lasting surface feel | 0.2–1% |
| Stain resistance | 2–6% |
| Resin modification | 1–6% |
These percentages should be treated as starting points for formulation development. Confirm whether the dosage is calculated on the total formulation, resin solids or another basis before production. Optimize the addition level through compatibility, curing and performance tests.
For water-based systems, particular attention should be paid to dispersion stability and compatibility. For solvent-based systems, evaluate solubility, viscosity, film formation and curing behavior.
IOTA 2110 is available in molecular weight grades of 1,000, 2,000, 2,500 and 10,000.
When selecting a grade, consider the viscosity requirements of the formulation, the desired degree of silicone modification, the processing method and the properties required in the final material.
A practical approach is to compare two or more molecular weight grades at controlled addition levels and assess compatibility, curing behavior, surface feel, stain resistance and low-temperature performance.
For manufacturers developing high-performance coatings, polyurethane materials and modified resins, IOTA 2110 offers a hydroxyl-functional PDMS option with high active content and multiple molecular weight choices.
Its reactive end groups distinguish it from silicone fluids intended primarily for non-reactive lubrication or surface slip. In compatible systems, it provides a route to investigate the integration of silicone functionality into a resin formulation rather than relying exclusively on physical blending.
Successful formulation requires matching the product to the resin chemistry and verifying the final performance experimentally.
Q1: What is IOTA 2110?
IOTA 2110 is a double-ended hydroxyl silicone oil, chemically described as α,ω-dihydroxy-terminated polydimethylsiloxane (PDMS).
Q2: What is hydroxyl silicone oil used for?
Hydroxyl silicone oil is used in selected silicone intermediates, polymer modification, resin formulations and surface treatment applications. Depending on its molecular structure and formulation, it can provide reactive functionality for further chemical modification.
Q3: Can IOTA 2110 be used in polyurethane?
It can be evaluated in compatible polyurethane systems. The formulator should verify the hydroxyl functionality, reaction stoichiometry, compatibility and curing behavior for the specific polyurethane chemistry.
Q4: Is IOTA 2110 suitable for water-based formulations?
Water-based and solvent-based applications are both listed as target formulation types. However, water compatibility is formulation-dependent, so dispersion stability and storage stability should be confirmed before commercial production.
Q5: How much IOTA 2110 should be added?
The suggested starting ranges are 0.2–1% for long-lasting surface feel, 2–6% for stain resistance and 1–6% for resin modification. The optimal dosage depends on the application and formulation.
Anhui IOTA Silicone Oil Co., Ltd. supplies silicone materials for industrial formulation and polymer modification applications.
If you are looking for a hydroxyl-terminated PDMS for polyurethane, coatings or resin modification, contact our team to discuss the appropriate molecular weight, application requirements and sample availability.
To help us recommend a suitable grade, please share:
Your target application and resin system
Required molecular weight or viscosity
Water-based or solvent-based formulation
Target performance, such as surface feel, stain resistance or low-temperature flexibility
Product: IOTA 2110 Double-Ended Hydroxyl Silicone Oil
Website: https://ethylsilicone.com/
Email: sales15@siliconeoil.net
