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3 triethoxysilylpropyl methacrylate 21142 29 0 structure

3-(Triethoxysilyl)propyl Methacrylate

CAS No.:21142-29-0
Product Grade: Industrial Grade
Purity / Assay: 98% min
Molecular Formula:C₁₃H₂₆O₅Si
Molecular Weight:290.43
Synonym(s):GPTMS substitute; Triethoxy(3-methacryloyloxypropyl)silane; MPS

3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0) is a silane coupling agent that combines a polymerizable methacrylate group with a hydrolyzable triethoxysilyl functionality. With formula C13H26O5Si, this bifunctional molecule promotes covalent bonding between organic polymer matrices and inorganic substrates (glass, metal oxides, fillers), improving adhesion, dispersion and long‑term durability. It is widely used in adhesives, coatings, composites, sealants and surface treatments to enhance interfacial strength and moisture resistance.

KieRay Chem supplies 3-(Triethoxysilyl)propyl Methacrylate with strict quality control and guidance on safe handling and hydrolysis procedures. As a dependable supplier, KieRay Chem provides consistent batches, technical support for coupling strategies and packaging options suited for lab and production use. Our support helps customers achieve stronger, more durable interfaces and improved composite performance. 3-(Triethoxysilyl)propyl Methacrylate is selected by formulators and purchasing teams that need dependable identity, consistent handling, and repeatable performance from batch to batch. KieRay Chem supports customers with responsive technical communication, careful document control, export-ready packing, and stable supply planning. Our team can coordinate specification confirmation, sample evaluation, production scheduling, and international logistics so that this CAS 21142-29-0 material is easier to qualify and reorder.

1. Acts as a silane coupling agent to chemically bridge organic polymers and inorganic substrates, improving adhesion of coatings, primers and composites to glass, metal oxides and mineral fillers. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).
2. Enhances filler dispersion and interfacial strength in composite materials, leading to improved mechanical properties, reduced filler pull‑out and better wear resistance. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).
3. Improves moisture resistance and durability of bonded interfaces by forming siloxane networks through hydrolysis and condensation of the triethoxysilyl groups. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).
4. Provides a polymerizable methacrylate end that can copolymerize with acrylate and methacrylate systems, creating covalent bonds between the silane and the organic matrix. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).
5. Useful in surface treatments and primers for glass fiber sizing, reinforcement pre‑treatment and preparation of substrates for high‑performance coatings and adhesives. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).
6. Supplied inhibited and with handling recommendations by KieRay Chem; technical support is available for hydrolysis control, pH management and application‑specific dosing to achieve optimal coupling performance. It also helps users improve process consistency, manage production risk, and maintain predictable results across scale-up, routine manufacturing, and finished-product quality checks for 3-(Triethoxysilyl)propyl Methacrylate (CAS 21142-29-0).

200kg/drum, 25kg/drum
CAS No.: 21142-29-0

Product Name: 3-(Triethoxysilyl)propyl Methacrylate

Purity / Assay:98% min
Molecular Formula:C₁₃H₂₆O₅Si
Molecular Weight:290.43
EINECS No.:220-491-7
Synonym(s):GPTMS substitute; Triethoxy(3-methacryloyloxypropyl)silane; MPS

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