Description

Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With 3-(Triethoxysilyl)-1-Propanamine is a specialized silane-modified polyisocyanate polymer, a key intermediate for advanced material synthesis. This compound matters for its unique dual functionality, combining the reactivity of isocyanate groups with the adhesion-promoting and crosslinking properties of an organosilane. Industrial manufacturers and R&D chemists need it to develop high-performance coatings, adhesives, and composite materials where enhanced bonding to inorganic substrates and environmental durability are critical.

Application

• As a coupling agent and crosslinker in high-performance polyurethane (PU) coatings and sealants for automotive, aerospace, and industrial applications.
• Key component in formulating adhesives and primers for glass, metal, and mineral surfaces, improving wetting and long-term bond strength.
• Modifier for epoxy and other resin systems to enhance chemical resistance, thermal stability, and mechanical properties in composite materials.
• Surface treatment agent for fillers and pigments (e.g., silica, glass fibers) to improve dispersion and interfacial adhesion in polymer matrices.
• Intermediate in the synthesis of specialty silane-terminated polymers (STP) and hybrid organic-inorganic materials.
• Used in R&D for developing novel moisture-curing systems and one-component products with extended shelf life.

Basic Information

Product Name	Isocyanic Acid, Polymethylenepolyphenylene Ester, Polymer With 3-(Triethoxysilyl)-1-Propanamine
CAS No.	68318-25-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly[(phenyl isocyanate)-co-formaldehyde], polymer with 3-(triethoxysilyl)-1-propanamine; Silane-modified polymeric MDI; 3-(Triethoxysilyl)propylamine polymer with polymethylene polyphenylene isocyanate; Aminopropyltriethoxysilane-polymeric MDI adduct; STP-MDI hybrid polymer; γ-Aminopropyltriethoxysilane-modified PMPPI; Isocyanic acid, polymethylenepolyphenylene ester, reaction product with N-(3-triethoxysilylpropyl)amine
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to stringent quality management systems. Each batch is characterized for critical parameters including isocyanate (NCO) content, silane content, viscosity, and residual monomer levels to ensure consistent performance. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with relevant global regulatory frameworks for industrial chemicals.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated area at room temperature (15-25°C / 59-77°F). Keep container tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and premature reaction. Isolate from sources of heat, moisture, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Silane Content	Contact for details
Viscosity (25°C)	Contact for details
Specific Gravity (25°C)	Contact for details
Solids Content	Contact for details
Residual Monomer (HPLC)	< 0.5%

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