CYS-B12 Carboxy-Terminated Silicone Fluid
CYS-B12 is a special silicone fluid with reactive carboxyl end groups and a low-viscosity PDMS base. It is used to improve bonding, adhesion, and surface properties in products like adhesives, sealants, biomaterials, and coatings.
Product Introduction:
CYS-B12 is a highly specialized carboxy-terminated silicone fluid (CAS 58130-04-4) featuring reactive carboxydecyl end groups and a low-viscosity polydimethylsiloxane (PDMS) backbone. It is designed for applications requiring covalent bonding, enhanced substrate adhesion, and surface modification, especially in adhesives, sealants, biomaterials, and functional coatings.
Technical Specifications
| Property | Value |
|---|---|
| Chemical Name | Carboxydecyl-Terminated Polydimethylsiloxane |
| CAS Number | 58130-04-4 |
| Molecular Formula | PDMS with –CH₂(CH₂)₈COOH end groups |
| INCI Name | Bis(carboxydecyl) dimethicone |
| Appearance | Clear to straw-colored viscous liquid |
| Viscosity @ 25°C | 15–30 cSt (DMS-B12); variants like CYS-B25: ~500 cSt available |
| Density @ 25°C | ~0.96 g/cm³ |
| Refractive Index @ 25°C | 1.421 |
| Flash Point | >205°C |
| Melting Point | < -60°C |
| Volatile Content | <3% |
| Solubility | Soluble in alcohols; emulsifiable in aqueous systems |
| Storage | Keep in sealed container, dry and cool conditions |
| Shelf Life | 12 months under recommended storage |
Key Benefits & Performance Features
Reactive Carboxyl Termini – Enables strong chemical bonding with organic and inorganic substrates.
Surface Functionalization – Suitable for modifying surfaces to enhance hydrophilicity or bonding sites.
Low Viscosity – Easy handling and uniform application across various formulation systems.
Excellent Thermal Stability – Maintains performance under high processing temperatures.
Biocompatibility – Potential use in pharmaceutical and biomedical-grade silicone systems.
Application Areas
CYS-B12 Carboxy-Terminated Silicone Fluid is ideal for:
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Advanced Silicone Adhesives – Provides enhanced flexibility and crosslinking potential.
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Silicone-Based Coatings – Improves wetting and adhesion on plastics, glass, and metals.
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Biomedical & Drug Delivery – Offers functionalization potential in medical devices or carriers.
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Rubber & Elastomer Processing – Used as a structure control agent or additive modifier.
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Textile & Leather Treatments – Reacts with fabric surfaces for enhanced durability and softness.
Packaging Options:
We offer flexible packaging for both R&D and bulk industrial use:
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1 kg & 5 kg HDPE bottles (sample/lab-scale)
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25 kg pails & 200 kg drums (industrial production)
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1000 kg IBC totes available on request
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Custom viscosity grades and formulations available under Silico® brand lines
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.
Jessica G.
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