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Hydroxy Silicone Fluids

Silico® is a leading global manufacturer of silanes and silicones with over 15 years of experience.

Hydroxy silicone fluid, also known as silanol silicone fluid, is a hydroxyl-terminated linear polydimethylsiloxane. It is widely used as an additive, intermediate, or base polymer in multiple applications.

Low molecular weight hydroxy silicone fluid improves processing in filled silicone rubbers, preventing crepe hardening and extending storage life. It also acts as a base polymer for water repellents and as a hydrophobizing agent for fillers like silica.

Silico® offers hydroxy-terminated vinyl silicone fluids, methyl-phenyl silicone fluids, and fluorosilicone fluids. Hydroxy vinyl fluids enhance mechanical performance; phenyl fluids improve heat resistance; fluorosilicone fluids provide excellent chemical resistance and oil repellency.

Hydroxy fluorosilicone fluids are ideal for extreme temperatures and fuel exposure. They can also be used as fabric finishers, defoamers, and water/oil repellents in coatings and textiles.

In personal care, hydroxy silicone fluids enhance hair shine, gloss, and volume. In coatings, they improve defoaming, leveling, and anti-skinning properties.

Recommended Hydroxy Silicone Fluids

CAS 70131-67-8

Hydroxy-Terminated Polydimethylsiloxane (PDMS)

Silico® OH-500 Hydroxyl-Terminated Silicone Oil (CAS 70131-67-8) is a low-viscosity, solvent-free fluid used as a water repellent, structure control agent in silicone elastomers, and a base for amino silicones and softeners.
CAS 67923-19-7

Hydroxy-Terminated Methyl Vinyl Silicone Oil

OH-72 Hydroxy-Terminated Methyl Vinyl Silicone Oil (CAS 67923-19-7) is a low-viscosity reactive fluid for silicone rubber. Its hydroxyl and vinyl groups enhance filler treatment, structure control, and crosslinking performance.
CAS 80801-30-5

Hydroxypropyl-Terminated Polydimethoxysiloxane

Silico® OH-78 Hydroxy-Terminated Methyl Phenyl Silicone Fluid (CAS 80801-30-5) offers improved heat stability, oxidation resistance, and resin compatibility—ideal for crosslinkable silicone and high-temp systems.
CAS 70131-67-8

Hydroxypropyl-Terminated Polydimethoxysiloxane

OH-80 Hydroxypropyl-Terminated Polydimethoxysiloxane (CAS 104780-66-7) enhances low-temp flexibility, processability, and durability. Ideal for boosting heat and wear resistance in specialty polymers.
CAS 68607-77-2

Hydroxy-Terminated Fluorosilicone Fluid

Silico® OH-81 Hydroxy-Terminated Fluorosilicone Fluid (CAS 68607-77-2) is a reactive polymer with strong chemical and fuel resistance. Used in fluorosilicone rubber, coatings, adhesives, and sealants.
CAS 63148-52-7

Hydroxy-terminated polymethylphenyl siloxane

OH-82 Hydroxy-Terminated Polymethylphenylsiloxane (CAS 63148-52-7) is a heat-resistant silicone fluid with hydroxyl ends, providing oxidation stability and resin compatibility for high-performance uses.
CAS 63148-57-2 Silicones Fluid

Hydroxy-Terminated Polymethylhydrogensiloxane

OH-85 Hydroxy-Terminated Polymethylhydrogensiloxane (HT-PMHS), CAS 63148-57-2, is a low-viscosity silicone fluid with reactive Si-H bonds. It’s used in crosslinking and water-repellent coatings for its stability and low surface energy.
CAS 63148-56-1 Silicones Fluid

Hydroxy-Terminated Fluorosilicone Fluid

OH-86 Hydroxy-Terminated Polymethyltrifluoropropylsiloxane (CAS 63148-56-1) is a fluorinated silicone fluid with hydroxyl ends, offering chemical resistance and water repellency. Used in coatings and sealants.
CAS 63148-58-3 Silicones Fluid

Hydroxy-terminated polymethylamino siloxane

OH-88 Hydroxy-Terminated Polymethylamino Siloxane (CAS 63148-58-3) is an amino silicone fluid with hydroxyl ends, offering adhesion, heat resistance, and softness for coatings, adhesives, and personal care.

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Hydroxy Silicone Fluids: Guide

Hydroxy silicone fluids are linear polydimethylsiloxane compounds terminated with hydroxyl groups (–OH). These reactive fluids are commonly used in silicone rubber production, textile finishing, and as defoamers in industrial applications.

Applications:

  • Silicone Rubber Processing: Enhances stability and prevents premature curing.

  • Textile and Leather Finishing: Provides water repellency and softness.

  • Defoaming Agents: Controls foam in coatings, paints, and adhesives.

  • Lubricants and Additives: Used in automotive, industrial applications, and various formulations.

Hydroxy silicone fluids are available in different viscosities, tailored for specific needs.