Antihydrolysis Agent
Function
It is an active antihydrolysis agent for polyester polyurethanes produced by hot casting as well as for adhesives
based on polyester polyurethane.
Description
Function
It is an active antihydrolysis agent for polyester polyurethanes produced by hot casting as well as for adhesives
based on polyester polyurethane.
Product description
Chemical composition : Monomeric carbodiimide
Physical form : 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
It 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 antihydrolysis agent 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. Antihydrolysis agent gives the best results when added in a concentration of up to 2 parts by weight to otherwise unprotected polyester polyurethane elastomers.
