Toluene diisocyanate manufacturer Knowledge Evonik Vestanat IPDI Isophorone Diisocyanate 4098-71-9

Evonik Vestanat IPDI Isophorone Diisocyanate 4098-71-9

author: Post: 09/05/2023 65read Comments Off

Evonik Vestanat IPDI Isophorone Diisocyanate 4098-71-9

Manufacturer ： EVONIK Degussa

structure :3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate

Physical parameters

Performance

Value

unit

Test Method

Density (20℃）

1.058-1.064

g/cm3

DIN51757ASTMD2111

Viscosity (23</strongPlastic technology (RIM) and water-based adhesives or hot-melt adhesives. In polyurethane resin technology, the preparation of waterborne polyurethane dispersions is the most important application of VESTANAT®IPDI, because with this starting material, low viscosity prepolymers and final products with low co-solvent content can be obtained . It is the hard segment component of the resin. If excellent yellowing resistance is required, low reaction dilution Based on VESTANAT®IPDI synthesis of urethane acrylates (conventional or water-based) for radiation curing, depending on the solvent or co-solvent content.
VESTANAT®IPDI can be applied to moisture-cured prepolymers, This is another application of polyurethane resin. IPDI can make these products have the characteristics of yellowing resistance, low viscosity and low residual diisocyanate monomer. VESTANAT®IPDI as The basic solvent-based high molecular weight polyurethane resin can be used in coatings that require abrasion resistance, especially where long-term flexibility and light fastness are required. Typical applications are polyurethane resins for artificial leather or natural leather finishes. Use IPDI to urethane the alkyd resin Alkyd and urethane oils are mainly used to substantially improve the anti-yellowing properties of these resins, drying properties and increase hardness.

In the application of two-component polyurethane adducts) or in the form of polyisocyanates (e.g. VESTANAT®T1890). This use is mainly in heavy vehicle and automotive coatings (OEM and refinish).

VESTANAT®IPDI and its polyisocyanate can be used to prepare blocked polyisocyanate, which can be used for electrostatic spraying powder Crosslinking agent for paints and solvent-borne industrial coatings, especially can coatings and coil coatings. IPDI-based cross-linking agent for solvent-free two-component polyurethanes with good light stability and mechanical properties. These systems are mainly used in elastomeric coatings and casting resins. Hard systems can be used as industrial materials.

Activity and Catalysis
Aliphatic and cycloaliphatic diisocyanates are less reactive than aromatics. IPDI usually requires a suitable catalyst to accelerate the urethane reaction. It is recommended to use dibutyltin dilaurate as the catalyst for urethanization.
VESTANAT® IPDI or its adducts as polyurethane formulation As a normal temperature crosslinking agent, dibutyltin dilaurate is often used. Where complete or partial reaction of isocyanate and water (moisture) is desired, a mixed catalyst of dibutyltin dilaurate and a tertiary amine such as diazabicyclooctane (DABCO) should be used. In addition to dibutyltin dilaurate, iron acetylacetonate , Phenyl mercury salt (COSCATR83) is an effective catalyst for solvent-free polyurethanes (elastomers and casting resins). Of course, at high temperature, resin synthesis is to produce prepolymer , the reaction is also possible without a catalyst. When the temperature increases, the difference in the activity of the two isocyanates of IPDI decreases, so when the catalyst is used at room temperature, the selectivity of the prepolymer produced is higher. The best selectivity can be achieved when the temperature does not exceed 50°C and DBTDL is added.

Storage and Shipping
VESTANAT®IPDI is packaged in non-returnable 30kg cans and 200kg pails Delivery, delivery by tanker and storage tank is also possible. If moisture can be excluded, IPDI can be stored for at least one year without affecting the above standard quality. Long-term storage will increase the color index.

�Supplied in 200kg barrels, tank trucks and storage tanks are also available. If moisture can be excluded, IPDI can be stored for at least one year without affecting the above standard quality. Long-term storage will increase the color index.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.allhdi.com/archives/957
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