Specification

 

      Properties                  Value               Unit of Measurement              Method

 

   NCO Content            30.5 – 32.5                   % by wt.                      2011-0248603-94

 

  Viscosity 25 C*           160-240                        mPa-S                        2011-0313703-95

 

         Acidty                   Max 200                      ppm HCl                     2011-0461102-96

 

         *) Lengthy storage can lead to an increase in the viscosity of Chemithane 310,

although inour experience this has no adverse effect on the processing properties

of the product.

 

 

 Other Data

 

                    Properties                                     Value                  Unit of Measurement                 Method

  

                 Density 20 °C                            approx. 1.23                           g/cm³                            DIN 51757

  

      Phenylisocyanate content               max. 50     ppm             2011-0489801-95

 

Coefficient of thermal  expansion            6.59. 10-4                               K-1

 

              Specific heat  (cp)                         approx. 1.51                        kJ/kgK

 

* These values provide general information and are not part of the product specification

 

 

Packaging

250 kg./drum

 

Storage

           Recommended storage temperature: + 10 to + 30 °C (in exceptional cases up to 50°C) Storage stability (ex works): 6 months if stored in moisture-tight drums

 

Directions for Processing

              Desmodur 44V20L may undergo partial crystallization at temperatures below 0 °C. The product can, however, be brought back into the liquid state by heating the entire contents of the drum for a short time to a maximum of 70 °C, although this may lead to an increase in the solids content. Drums including empty ones should always be kept tightly sealed. The product should never be allowed to come into contact with water, which reacts with Chemithane 310 to form polyureas and carbon dioxide. Contact with water in  any  form  (damp   drums, solvents containing water,   moist  air)  must  be prevented not  only  during  storage, but  also  when  removing  material  from drums  and during processing. 

 

 

 Specification

 

                       Properties                  Value    

                    

                   NCO Content            30.5 – 32.5    

 

                     Viscosity 25 C*           160-240  

 

                           Acidty                   Max 200     

 

 

 

         Unit of Measurement             Method

 

                   % by wt.                 2011-0248603-94

 

                  mPa-S                      2011-0313703-95

 

                  ppm HCl                  2011-0461102-96

 

 

         *) Lengthy storage can lead to an increase in the viscosity of Chemithane 310,

although inour experience this has no adverse effect on the processing   properties of the product.

 

 

 Other Data

 

                    Properties                                   Value                

                   Density 20 °C                           approx. 1.23                      

      Phenylisocyanate content              max. 50     ppm            

Coefficient of thermal  expansion                 6.59. 10-4                             

              Specific heat  (cp)                      approx. 1.51                       

 

 

      Unit of Measurement                 Method

 

                  g/cm³                                  DIN 51757

 

        2011-0489801-95

 

                    K-1

 

                 kJ/kgK

 

 

 

* These values provide general information and are not part of the product specification

 

 

Packaging

250 kg./drum

 

Storage

           Recommended storage temperature: + 10 to + 30 °C (in exceptional cases up to 50°C) Storage stability (ex works): 6 months if stored in moisture-tight drums

 

Directions for Processing

              Desmodur 44V20L may undergo partial crystallization at temperatures below 0 °C. The product can, however, be brought back into the liquid state by heating the entire contents of the drum for a short time to a maximum of 70 °C, although this may lead to an increase in the solids content. Drums including empty ones should always be kept tightly sealed. The product should never be allowed to come into contact with water, which reacts with Chemithane 310 to form polyureas and carbon dioxide. Contact with water in  any  form  (damp   drums, solvents containing water,   moist  air)  must  be prevented not  only  during  storage, but  also  when  removing  material  from drums  and during processing. 

 

 

Desmodur 44V20L (Isocyanate)​​

Paint, Waterproof & Fireproof

Flooring, Joint 
& Road

Equipment 
& Tools

The Chemicals Distributor

Desmodur 44V20L (Isocyanate)

MDI for PU Flooring, PU Rigid Foam and Adhesive

 

 

General  Properties and Applications

 

Desmodur 44V20L is a liquid, dark brown mixture of diphenylmethane-4,4'-diisocyanate (MDI) with isomers and  homologues of higher  functionality.  It is used in conjunction with polyols to produce PU flooring, PU foam insulation and adhesive.

Concrete 
& Mortar

Plastic & Rubber

Plastic

& Rubber

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02 525 8796-7

081 810 2780