Aldehyde Resins（CF-A81、CF-A101）

General Description：

l      CF-A81 and CF-A101 are decolored aldehyde resins and can be applied in a wide range of coatings, and have excellent effects in increasing the anti-yellowing, coating glossiness and hardness, especially suitable for preparation of universal color pastes.

Properties：

Features and Applications：

l      Aldehyde resins can be mixed with N/C, alcoholic acids or PU, chlorinated resin copolymer, and plasticizers for forming transparent or colored paints, which are applicable to the coating on wooden articles, metal and paper.

l      Aldehyde resins solutions have low viscosity and good fluidity. Besides they can increase the degree of cure of paints as well as the thickness, glossiness, hardness and anti-yellowing of the coating film.

l      Aldehyde resins are insoluble in aliphatic hydrocarbon solvents, and thus are applicable to gasoline-proof paints.

l      Aldehyde resins can be used in baking varnish formation. Neither odors are not given out nor are glossiness affected during baking process. 5% addition can increase the hardness from 1H to 3H, with good bending resistance.

Advantages of Aldehyde resins against Polyketone resins & Maleic resins：

l      Lighter color；

l      Better anti-aging and anti-yellowing performance；

l      Better fluidity, lower solution viscosity, and higher degree of cure；

l      Allow better solubility of N/C in mixture solvents；

l      Better flexibility；

l      Simpler dissolving and easier operation；

l      Faster drying.

Aldehyde resins apply to UV coatings, should pay attention to：

l      First, do formula aging test in the UV system：If the UV specimen baked in an80℃oven  over four hours, and then be put into gel, then the aldehyde resin can't be used, and should be replaced；After eight hours without gel, the aldehyde resin can be used.

l      If aldehyde resin is dissolved or dispersed in high temperature, the product maybe easy to gel. You should cool it and then make products.