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DDI (Dimeryl Diisocyanate) CAS No. 68239-06-5 DDI

Dimeryl Diisocyanate

DDI

CAS No. 68239-06-5

Chemical Name: Dimeryl Diisocyanate

Synonyms: 2-Heptyl-3,4-bis(9-isocyanatononyl)-1-pentylcyclohexane

Code: DDI

CAS No.: 68239-06-5

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Product Description
Product Properties
Applications
Packing & Storage
Technical Index

Product Description

DDl is a unique aliphatic diisocyanate which is long-chain compound with a 36-carbon dimer fatty acid.lt gives DDl superior flexibility, water resistance and low toxicity compared to other aliphatic isocyanates.

DDl is a low viscosity liquid that can easily soluble in most polar or non-polar solvents. Based onaliphatic isocyanate,it has the characteristics of non-yellowing.

Product properties & Features

DDl with the advantages of low toxicity, easy to use, soluble in most solvents, controllable reaction time and low water sensitivity. lt is a typical green biorenewable special isocyanate variety, which can be widely used in fabric finishing,elastomers, adhesives, sealants, coatings, inks and other military or civil fields.

Specification	Relative molecular weight	NCO content, %	Hydrolysable chlorine, %	Steam pressure, mmHg	Melting point, ℃	Toxicity
DDI	600	13.6 ~ 15.0	＜0.05	＜0.001（25℃）	-34.4	low toxicity
IPDI	222.2	37.8	0.02	0.003(20℃）	-60	middle toxicity
TDI	174	48.3	0.01	0.042(20℃）	5 ~ 6.5	highly toxicity
MDI	250.26	33.6	0.05	-	38	middle toxicity

Application

1. Fabric: our DDI with water easily to be aqueous emulsion, which made the fabric be smooth, gentile, and water-proof.

2. PU resin and Polyurea resin, using DDI can be with preformance of non-yellowing, excellent resilience, and extensile, high rigid, low water sensible, and better anti-abrasivenesss, anti-chemical solvent , and anti-low temperature.

3. React with HTPB to be excellent compatibility and reactivity, the produced PU can be extraordinary low rigid, no need plastic agent.

4. Coating: DDI polyurea coating with excellent tensile strength and weather proof, which are easily adhered to metal and wood without fracture.

Packing & Storage

50kg/plastic drum or 190kg/metal drum packaging.

Storage should be cool, dry and ventilated.

The shelf life is 12 months, after the expiration of the re-inspection can still be used. Avoid rain and sun during transportation. Do not mix with strong oxidants.

Technical Index

Item	Index
Appearance	Colorless and transparent oily liquid
lsocyanate content, %	13.60~15.00
Hydrolytic chloride, %	≤0.05
PH value	3.0~7.0
Moisture, %	≤0.02
Viscosity, mPa.s, 20°C	≤170

*NOTE: The company can develop the new DDl according to the special demand of our clients.

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