Description

Octadecanoic Acid, Polymer With Silica And Trimethoxy[3-(Oxiranylmethoxy)Propyl]Silane is a specialized organosilane-modified polymer composite designed to impart unique surface properties. This product matters for its ability to modify silica surfaces with hydrophobic and organophilic characteristics derived from stearic acid, enhancing compatibility and performance in composite materials. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced polymer composites and specialty chemical synthesis.

Application

• As a surface modifier and coupling agent for silica, glass, and other mineral fillers in polymer composites.
• To enhance hydrophobicity and dispersion of inorganic particles within organic polymer matrices like epoxies, polyurethanes, and silicones.
• In the formulation of high-performance coatings and inks to improve adhesion, scratch resistance, and chemical stability.
• As a key component in specialty adhesives and sealants for improved bonding to difficult substrates and moisture resistance.
• For the development of reinforced elastomers with better mechanical properties and reduced filler agglomeration.
• In advanced material research for creating functionalized surfaces with tailored chemical reactivity.

Basic Information

Product Name	Octadecanoic Acid, Polymer With Silica And Trimethoxy[3-(Oxiranylmethoxy)Propyl]Silane
CAS No.	67953-81-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Stearic acid, polymer with silica and 3-glycidoxypropyltrimethoxysilane; Silane, trimethoxy[3-(oxiranylmethoxy)propyl]-, polymer with octadecanoic acid and silica; 3-Glycidoxypropyltrimethoxysilane-stearic acid-silica polymer; Organosilane-modified silica composite; Epoxy-functional silane-stearate composite; Surface-modified silica with stearic acid and GPTMS; Hydrophobic silica coupling agent; CAS 67953-81-5
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Quality parameters are monitored against internal specifications developed for performance in composite applications. Certificates of Analysis (COA) detailing key characteristics are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Off-white to light tan powder or granules
Identification (IR)	Conforms to structure
Assay (Silane Content)	Contact for details
Loss on Drying	< 2.0 %
Silica Content	Contact for details
Particle Size (Typical)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.