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Desmodur® VT 66 - for flexible foams

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材料类型

  • MDI
  • TDI

材料

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一般特征

Desmodur® VT 66, a TDI - MDI blend, is a mixture of different aromatic diisocyanates and isomers and homologues of higher functionality used for the production of the flexible polyurethane cold-curing molded foam for automotive seating.

储存条件

- Storage in original sealed container.
- Recommended storage temperature: 15 - 40°C.
- Protect from moisture, heat and foreign material.

General information:
The product is sensitive to moisture and heat. It should be protected against contact with atmospheric moisture. Higher storage temperatures for prolonged periods may result in discoloration or the formation of insoluble deposits. The product crystallizes at temperatures below 18°C. However, careful melting at up to 50°C will reliquify the product without any detrimental effect on its quality. The contact surface temperature may not exceed 80°C. The reliquified product must be homogenized as crystallisation causes a shift in the isomer ratio between the crystalline and the still liquid phases.
Opened containers must be resealed after removing product. If stored for long periods, the product should be overlaid with nitrogen. The product reacts with water to release carbon dioxide. During storage, transfer and handling of the product, contact with water in any form (damp containers, solvents containing water, moist air) must be prevented as the generation of carbon dioxide may result in a dangerous increase in pressure. The polyureas which are formed at the same time may result in turbidity. They may also cause blockages and breakdowns in filters, pumps and pipes.
Storage time:
We represents that, for a period of six months following the day of shipment as stated in the respective transport documents, the product will meet the specifications or values set forth in section "specifications or characteristic data" above, what ever is applicable, provided that the product is stored in full compliance with the storage conditions set forth in and referenced under section "storage" above and is otherwise handled appropriately.
The lapse of the six months period does not necessarily mean that the pro ... text to long! (max 2000 characters)

样品

The access of moisture in any form must be prevented.

包装类型

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技术属性和数据表

属性名称 测试方法 单位 数值
Density 20 °C DIN 51757 g/cm³ approx. 1.21
Appearance DIN ISO 6271 brownish black liquid

属性名称 测试方法 单位 数值
Viscosity 25 °C M001 mPa*s 5.0 - 10.0
NCO content M105 % by wt. 42.5 - 43.9
Viscosity 25 °C M001 mPa*s 5.0 - 10.0
NCO content M105 % by wt. 42.5 - 43.9
Hydrolysable chlorine M102 mg/kg ≤ 1000
Hydrolysable chlorine M102 mg/kg ≤ 1000

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技术数据表
安全数据表
无可用直接下载,请访问 www.productsafetyfirst.covestro.com
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