KY-A81 Aldehyde Resin
KY-A81 Aldehyde resin is a kind of condensation from urea and aliphatic aldehydes, bright and resistant to yellowing. It shows excellent compatibility with many coating/printing raw materials. It is soluble in most organic solvents and has very good wetting and dispersion in the formulation of paints. It is a kind of marvelous multifunctional coating additive used to improve the adhesion, gloss, hardness, solid content, and fullness. It can also be used in universal pigment pastes.
Properties
KY-A81 | ||
Appearance | eye test | White or little yellowish beads or powder |
softening temperature （ISO 4625-1:2004) | Degree Celsius | 90-100 |
color number ① (ISO 4630-1:2004) | Hazen | ＜1 |
acid value (ISO 2114-2000) | mg KOH/g | ＜3 |
hydroxyl value (DIN 53240-2:1998) | mg KOH/g | 40-60 |
Kinematic viscosity② (GB/T 1660-2008) | mm²/s | ≥15 |
Density (ISO1183-1:2004(E)B) | G/cm3 | 1.05-1.15 |
Application
● Because of their excellent solubility and compatibility, KY-A81 can be used in many types of ink/coating formulations.
● Depending on the application, KY-A81 improves the gloss, hardness, adhesion, and resistance to yellowing of coating.
● Because of their good pigment wetting and very low solution viscosity, KY-A81 can be used for the manufacture of pigment pastes with high pigment content.
● KY-A81 is very stable in heat and can be used for baking finishes, and it will not cause odor or discoloration.
● Because of its relatively low solvent retention, it only leads to a slight increase of the drying time of physically drying finishes (e.g. cellulose and nitrate).
Storage and shipping
Shipped in a light-free condition and stored at a dry room temperature. Shelf life is usually 1 year. If the bags are not open, that are stored in a dry and well ventilated place, and if the property is tested OK, it can last up to 2 years.
