UVK-CLV further strengthens the resistance of polyester polyurethane to yellowing caused by ultraviolet light. It is recommended to be used for light color and transparent polyurethane products with strict requirements on product appearance, such as light color shoe upper glue, shoe materials, transparent PU gel, PU handicrafts, etc.
Product Model: UVK-CLV
Properties：
Appearance: Clear, light yellow liquid
Density (g/cm3, 25℃): 1.092
Viscosity (mPa.s, 25℃): 1000±500
Smell: with slight special smell of chemical compound
Solubility: Soluble in normal polyurethane raw materials (polyether polyol, plasticizer)
Applications:
UVK-CLV further strengthens the resistance of polyester polyurethane to yellowing caused by ultraviolet light. It is recommended to be used for light color and transparent polyurethane products with strict requirements on product appearance, such as light color shoe upper glue, shoe materials, transparent PU gel, PU handicrafts, etc.
Features & Advantages:
It has excellent and efficient comprehensive effect of resisting high temperature oxidation and yellowing. By comprehensively reducing the photodegradation, oxidation and other damages caused by light, oxygen, heat and other external factors on polyurethane materials, the yellowing and degradation of polyurethane can be delayed, and the service life of polyurethane can be improved.
High molecular mass of monomer, stable chemical structure and good compatibility. It will not migrate from polyurethane materials at high and low temperatures.
Low dosage, but excellent anti-oxidation and anti yellowing effect.
Light color, which will not affect the coloring of polyurethane.
It is liquid under normal temperature, no need heating and melting, and is easy to use.
User's Guide:
UVK-CLV can be added to any component of the two-component polyurethane. Generally, it is recommended to be added into the component of polyol and stir it well; Add it before synthesis of prepolymer can prevent or reduce the yellowing of prepolymer; Although we think it is safe to add it into the isocyanate component, it is still recommended to confirm it by storage stability test before use due to the active property of isocyanate.
The dosage depends on the situation, and the recommended dosage is 0.1-0.8%.
Long term storage at low temperature (≤ 12 ℃) may lead to crystallization, which shall be used after the whole barrel is heated, dissolved and mixed uniformly at ≤ 100 ℃.
Handling & Storage:
Exposure to atmosphere should be avoided. Product should be stored in a cool, dry environment away from sunlight and excessive heat.
Package: 25kg/200kg in HDPE drum
Shelf Life: Unopened shelf life is 18 months from the date of manufacture.
