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Triphenylmethane -4,4',4“- triisocyanate/ Methylidynetri-p-phenylene triisocyanate CAS No. 2422-91-5 RE

Chemical Name: Triphenylmethane -4,4',4'-triisocyanate

Synonyms: Methylidynetri-p-phenylene triisocyanate

Code: Isocyanate RE

CAS No. 2422-91-5

Character: Substitute for Desmodur RE

Molecular Formula:C₂₂H₁₃N₃O₃

Structure formula: HC[ -NCO]₃

CAS No.2422-91-5

Density: 1.0g/c m³, 20°C

M.W: 367.36

Melting point: 89°C

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Product Description
Product Properties
Applications
Packing & Storage
Technical Index

Product Description

Character: Substitute for Desmodur RE

Chemical Name: Triphenylmethane -4,4',4"- triisocyanate

Molecular Formula:C₂₂H₁₃N₃O₃

Structure formula: HC[ NCO]₃

CAS No.2422-91-5

Density:1.0g/c m³, 20°C

M.W:367.36

Melting point:89°C

Component:

Triphenylmethane -4,4',4'-triisocyanate 27.5%

Ethylacetate 72.5%

Product properties & Features

Our RE is of Chinese origin (manufactured in China) which the same performance as BAYER's Desmodur RE, is a solution which contains 27.5% triphenylmethane-4,4',4"-triisocyanate and 72.5% ethyl acetate.

Our RE features the following core properties.

1. High NCO reactivity: NCO content of approximately 9.3%, enabling rapid cross-linking at room temperature.

2. Excellent bonding strength: Exceptionally strong adhesion to rubber-to-metal, rubber-to-rubber, leather, and fibers.

3. Aging and solvent resistance: Enhances the product's heat resistance, oil resistance, chemical resistance, and abrasion resistance.

4. Broad compatibility: Highly compatible with natural rubber, neoprene, nitrile rubber, polyurethane, and other materials.

Application

1/. Rubber Adhesives (Primary Use)

- Rubber-to-metal bonding: tires, vibration dampers, seals, rubber rollers, conveyor belts (replaces traditional hot vulcanization, simplifying processes).

- Footwear industry: curing agent for neoprene/polyurethane adhesives; high-strength bonding of outsoles to uppers (rubber/leather).

- Rubber-to-fabric composites: conveyor belts, tarpaulins, medical tapes, fiber-reinforced rubber products.

2/. Two-component Polyurethane Coatings

- Industrial anti-corrosion paints: metal structures, pipelines, equipment; improves adhesion, hardness, and salt spray resistance.

- Elastic flooring/waterproofing: concrete protection, roof waterproofing, highly elastic wear-resistant coatings.

3/. Polyurethane Elastomers & Sealants

- Cast elastomers: rubber wheels, bearings, wear-resistant bushings; high resilience, tear resistance, and impact resistance.

- Sealants/caulks: construction, automotive, engineering machinery; oil resistance, weather resistance, dynamic sealing.

4/. Other Specialty Applications

- Pressure-sensitive adhesive modification: improves initial tack, holding power, and heat resistance.

- Resin/composite materials: crosslinking modification for epoxy and phenolic resins; enhances strength and heat resistance.

Packing & Storage

Packing

750g/bottle, 20 bottles in one carton, 24 or 30 cartons in one pallet

20kg/drum,18 drums or 27 drums in one pallet

55ka/drum,8 or 12 drums in one pallet

180kg/drum, 4 drums in one pallet

Storage

Please store in the original sealed jar under 32°C,the product can bepreserved stable for 12 months.

It is very sensitive to the moisture. It will produce carbon dioxide and insoluble urea in the reaction withwater.

If exposure to the air or light, it will speed up color changes, but the practical function will not be affected.

Transport Information

United Nations number / UN No.: 1992

United Nations Transport name: Flammable liquid, Toxic, N.O.S.

Transport risk level: 3 + 6.1

Packaging category: II

Environmental hazard: no

HS CODE: 2929109000

Technical Index

Item	Index
Assay of NCO	9.3±0.2%
Solid content	27±1%
Viscosity (20°C)	3 mPa.s
Solvent	Ethyl acetate
Flash point	-4°C

* NOTE: The company could research and develop the new products according to the special demand of our clients.

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