It is usually as grinding resin in universal pigment dispersion and applied widely in coating formulation. It can effectively improve adhesion, hardness, gloss, solid content of paint and fullness of coatings. It is a kind of excellent multifunctional additive to coating/painting with UV stability.
1.Chemical Structure:Aldehyde Resin A-81 is an aldehyde-ketone resin copolymerized from formaldehyde and ketone compounds, possessing a specific chemical structure and functional groups.
2.UV Curing Performance:This resin exhibits excellent UV curing properties, enabling it to rapidly cure under UV light exposure, forming a hard coating or adhesive layer.
3.Gloss and Transparency:The cured Aldehyde Resin A-81 coating boasts high gloss and transparency, enhancing the appearance of the finished product.
4.Weatherability and Chemical Resistance:The resin demonstrates outstanding weatherability and chemical resistance, capable of withstanding various chemicals and harsh environments, maintaining coating stability and durability.
Properties：
|
Item |
Testing |
A-81UV |
|
Softening temperature |
Degree Celsius |
80-100 |
|
Color number |
Hazen |
≤ 1 |
|
Acid value |
mg KOH/g |
≤3 |
|
Hydroxyl value |
mg KOH/g |
30-80 |
|
Density |
G/cm3 |
1.10±0.05 |
|
Moisture content |
% |
≤1.0 |
|
MW |
GPC |
600-1000 |
[1] 50% (mass fraction) solution in butyl acetate and ethanol, butyl acetate and ethanol account for 85% and 15% respectively.
[2][3] 50% resin solution of ethanol, solution temperature remains 25°C when viscosity is tested.
Solubility：
Aldehyde resin A-81UV is soluble in almost all common paint solvents such as aromatic hydrocarbons, alcohols, ketones, esters and so on but insoluble in water. Its solubility in nonpolar solvents such as mineral oil, aliphatic hydrocarbon, alicyclic hydrocarbon is limited.
Application：
1.UV Curing Coatings:Aldehyde Resin A-81 can be utilized in UV curing coatings as the primary film-forming component. It provides excellent curing performance, gloss, and transparency while enhancing the coating's weatherability and chemical resistance.
2.UV Curing Inks:In UV curing inks, Aldehyde Resin A-81 serves as the ink vehicle, offering superior printing and curing performance. It ensures rapid curing of the ink during the printing process, resulting in clear images and patterns.
3.UV Curing Adhesives:The resin can also be used in UV curing adhesives as the primary adhesive component. It provides strong bonding forces, ensuring good adhesion on various substrates. Additionally, UV curing adhesives offer fast curing speeds and are environmentally friendly.
Storage：
Aldehyde resin A-81UV must be stored in dry and cool place, the period of validity is one year, it also can be used after one year if examined again and conformance to requirements.
