Description

Triethoxysilylpropylmaleamic Acid is a highly functional organosilane coupling agent that combines the reactivity of a maleamic acid with the hydrolyzable ethoxysilane group. This unique bifunctional structure makes it a critical intermediate for modifying surfaces and polymers, enhancing adhesion between organic and inorganic materials. It is essential for manufacturers in the advanced composites, specialty coatings, and electronics industries seeking to improve material performance and durability.

Application

• Adhesion Promoter: Used as a coupling agent in glass fiber-reinforced composites, mineral-filled plastics, and rubber to improve the bond between the filler and the polymer matrix.
• Surface Modification: Functionalizes silica, glass, metals, and other inorganic surfaces to introduce reactive maleamic acid groups for further chemical grafting.
• Crosslinking Agent: Serves as a crosslinker in silicone-based sealants, adhesives, and coatings, contributing to enhanced thermal and mechanical properties.
• Polymer Modification: Incorporated as a comonomer or grafting site to synthesize specialty polymers with improved compatibility, weather resistance, or specific functional groups.
• Electronics Encapsulation: Used in formulations for potting compounds and encapsulants to improve adhesion to electronic components and circuit boards.
• Hybrid Material Synthesis: A key building block in sol-gel chemistry for creating organic-inorganic hybrid materials with tailored properties.

Basic Information

Product Name	Triethoxysilylpropylmaleamic Acid
CAS No.	33525-68-7
Molecular Formula	C14H27NO7Si
Molecular Weight	349.46 g/mol
Synonyms	3-(Triethoxysilyl)propylmaleamic Acid; Maleamic Acid, N-[3-(Triethoxysilyl)propyl]-; N-[3-(Triethoxysilyl)propyl]maleamic Acid; Silane A-178; Silquest A-178; γ-Maleimidopropyltriethoxysilane (related); 3-(Triethoxysilyl)-1-propanamine maleamic acid; Triethoxy[3-[(2,5-dioxo-1-pyrrolidinyl)oxy]propyl]silane (alternative representation)
EINECS	Contact for details

Quality Control

Our Triethoxysilylpropylmaleamic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including assay, purity verification, and functional group analysis, to ensure it meets precise specifications and delivers consistent performance. A Certificate of Analysis (COA) documenting key parameters is provided with each shipment to guarantee traceability and compliance with your quality requirements.

Storage

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

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color (APHA)	≤ 100
Refractive Index (n20D)	1.430 - 1.440
Density (g/mL, 25°C)	1.05 - 1.10

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