STABAXOL I

Monomeric carbodiimide

Plastic Additives / Hydrolysis Stabilizer

Stabaxol I has an excellent extension of material service life.

Function of Stabaxol I:
Stabaxol I is an active antihydrolysis agent for polyester polyurethanes produced by hot casting as well as for adhesives based on polyester polyurethane.

Stabaxol I is an active antihydrolysis agent for polyester polyurethanes produced by hot casting like e. g. PET, PBT, TPE, PLA, TPU and millable Urethane rubber. 
Polymers with amide groups (PA) can be protected against hydrolysis with Stabaxol I, too. 

Stabaxol I is very suitable for extrusion of monofilaments. 
Due to its powder form it can be handled easier than Stabaxol I or Stabaxol I LF.

Prior tests should always be carried out to determine the most suitable dosage, however.
To be most effective, Stabaxol I should be added to the polyester polyol during the warming-up period, starting at a minimum temperature of 50 °C (122 °F), to a maximum temperature of 120 °C (248 °F). 

As Stabaxol I does not disperse readily (it may float undissolved on the surface), it should be stirred intensively. 
Stabaxol I may slightly accelerate the crosslinking reaction (polyester polyol/iscoyanate). 

This can be counteracted by adding a very small amount of an organic acid (e.g. citric acid). 
For adhesives we recommend to add 1-2 parts by weight Stabaxol I to 100 parts by weight adhesive.

Stabaxol I is monomeric carbodiimide. 
Stabaxol I acts as an antihydrolysis agent for polyester-polyurethane elastomers produced by hot casting process. 

Stabaxol I is normally being dissolved in the polyester polyol; alternatively, it may be added to the pre-polymer (only with terminal OH groups). 
An addition of 0.5 part by weight Stabaxol I to 100 parts by weight polyester polyol approximately doubles the resistance to hydrolysis. 

Stabaxol I may slightly accelerate the crosslinking reaction (polyester polyol/iscoyanate). 
Stabaxol I can be counteracted by adding a very small amount of an organic acid. 
Stabaxol I has a shelf life of at least 1 year.

Product description of Stabaxol I:
Chemical composition of Stabaxol I: 
Monomeric carbodiimide

Physical form of Stabaxol I: 
slightly yellowish, crystallized melt

Density: 
approx. 0.97 g/cm³ (20 °C / 68 °F)
approx. 0.95 g/cm³ (50 °C / 122 °F)

Melting Range: 
45 - 52 °C / 113 - 126 °F (DSC main peak)

Viscosity: 
16.0 - 24.0 mPa s (50 °C / 122 °F)

Solubility: 
soluble in organic solvents, e.g. aceton,
dichloromethane; insoluble in water

Carbodiimide content: 
min. 10.0 %

The analytical data are general guide values.

Product information about Stabaxol I:
Stabaxol I is normally being dissolved in the polyester polyol; alternatively, it may be added to the pre-polymer (only with terminal OH-groups). 
An addition of 1 part by weight Stabaxol I to 100 parts by weight polyester polyol increases the resistance to hydrolysis up to 7 times. 

This data was established by tests conducted at 80 % relative humidity. 
Stabaxol I gives the best results when added in a concentration of up to 2 parts by weight to otherwise unprotected polyester polyurethane elastomers.

For adhesives we recommend to add 1-2 parts by weight Stabaxol I to 100 parts by weight adhesive.
Prior tests should always be carried out to determine the most suitable dosage, however.

To be most effective, Stabaxol I should be added to the polyester polyol during the warming-up period, starting at a minimum temperature of 50 °C (122 °F), to a maximum temperature of 120 °C (248 °F). 
As Stabaxol I does not disperse readily (it may float undissolved on the surface), it should be stirred intensively.

Stabaxol I may slightly accelerate the crosslinking reaction (polyester polyol/iscoyanate). 
This can be counteracted by adding a very small amount of an organic acid (e.g. citric acid).
 
Storage stability of Stabaxol I:
Stabaxol I can be stored for at least 24 month under cool (below 35 °C / 95 °F) and dry conditions.

Handling & safety of Stabaxol I:
Relevant safety data and references as well as possibly necessary warning labels are to be found in safety data sheet.