Covestro Desmodur HL BA TDI+HDI curing agent fast drying and yellowing resistance - 广州昊毅新材料科技股份有限公司

Desmodur-TDI based curing agent

Covestro Desmodur HL BA TDI+HDI curing agent fast drying and yellowing resistance

                                                             

 

  Product Features  
       Aromatic/aliphatic polyisocyanates based on diisocyanate/hexamethylene diisocyanate;
Combined with various Desmophen products or other resins containing hydroxyl components to prepare fast-drying and good gloss retention varnishes, paints or two-component polyurethane coatings

 form of supply  
       About 60% in butyl acetate solution

 

  Specifications 

characteristic

Numerical value

Units of measurement

method

Non-volatile content

60.0±2.0

DIN EN ISO 3251

NCO content

10.5±0.5

%

DIN EN ISO 11 909

Viscosity@23°C

2200±1000

mPa·s

DIN EN ISO 3219/A.3

Iodine color value

≤4

 

DIN EN 1557

TDI+HDI monomer

<0.5

%

DIN EN ISO 10283

 

  Other data*  

characteristic

Numerical value

Units of measurement

method

equivalent

about 400

 

 

Flash point

28

DIN EN ISO 1523

Density, 20℃

about 1.13

g/ml

DIN EN ISO 2811-1

*This data is general information and is not part of the product specification.

 Features/Applications 
     The resulting wood lacquer is particularly fast-drying and easy to sand. A full-bodied clear or pigmented coat can be obtained in just a few coats.

  compatibility  
Desmodur HL BA is compatible with many Desmophen polyesters and has only limited compatibility with hydroxyacrylates. In general, Desmodur HL BA has good compatibility with standard Desmodur products.

Solubility/Dilution
Desmodur® HL BA generally has good compatibility with the following solvents. However, the resulting solutions must be tested for storage stability. Desmodur HL BA can be diluted with ethyl acetate, butyl acetate and 1-methoxypropyl acetate-2. Aromatic solvents are not true solvents and have limited compatibility as diluents. Solutions with a low content of binders will experience turbidity and precipitation after prolonged storage. Polyurethane grade solvents should be used (low water content
at 0.05%). These solvents should not contain reactive groups.

store
- Store in original Covestro airtight containers.
- Recommended storage temperature: 0-30℃.
- Avoid moisture, heat and foreign substances.
General Information: This product is moisture sensitive. High temperature storage will result in an increase in viscosity and a decrease in NCO content.

storage time
Covestro declares that the product complies with the above "specification or characteristic values" for a period of 6 months from the date of shipment stated on the shipping document, provided that the product is stored in full compliance with the requirements in the "Storage" clause above and handled properly Specifications or characteristic values ​​stated in the Terms (as applicable). The fact that a product exceeds the 6-month period above does not mean that it no longer meets the specifications or the values ​​set in the characteristic values. However, Covestro recommends that products older than 6 months from the date of shipment be tested before use to confirm that they still meet the specifications or set values ​​in the characteristic values. Covestro makes no commitments for products older than 6 months from the date of shipment, and accepts no responsibility or liability for non-conformance to specifications or set values ​​in characteristic values.

  Safety  
Product Data Sheets are only valid when used in conjunction with their corresponding up-to-date Safety Data Sheets. Any updates to safety-related information - as required by regulation - will only be reflected in the Safety Data Sheets, copies of which will be revised and distributed accordingly. For relevant information, including the latest classification and labelling, application, handling and further safety-related data, please refer to the currently valid Safety Data Sheet.

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