Universal Aldehyde resin of SA-81 and SA-101
The appearance of aldehyde resin of SA-81 series is white or slight yellow granules. It is a kind of aliphatic aldehyde hard resin with resistant to yellowing. It is suit for solvent coatings, solvent inks, powder coatings, water-based coatings, variety resin-modified and other areas. Its major performance is improving the polarity of a variety of resins. Improving the resistant to yellowing of coating films and shorten drying time. Also it can improve the hardness, fullness and gloss of coating film. Increase solid content and reduce VOC emissions. The price is over 30% lower than similar foreign products. Product performance has reached similar foreign products, some performance are better than similar foreign products.
Characteristics
Performance |
SA—81 |
SA—101 |
Solubility
|
Polar-solvent |
Excellent |
Excellent |
Non-polar-solvent |
Excellent |
Poor |
Compatibility |
Excellent |
Good |
Pigment wetting quality |
Excellent |
Good |
Anti-yellowing |
Excellent |
Good |
Solubility: Soluble ○ Insoluble ×
|
Polar-solvent→Non-polar-solvent |
|
Alcohol
|
Ketone
|
Ester
|
Aromatic hydrocarbon
|
Fatty hydrocarbon
|
SA—81 |
○ |
○ |
○ |
○ |
○ |
SA—101 |
○ |
○ |
○ |
○ |
× |
Compatibility with other resin:
Resin |
|
Nitro cellulose |
|
Cellulose acetate butyrate |
|
Alkyd (long、middle、short) |
|
Aldehyde ketone resin |
|
Melamine resin |
|
Petroleum resin |
|
Chlorinated rubber |
|
Phthalates |
|
Amino resin |
|
Aromatic and aliphatic epoxy resins |
|
Hydrocarbon resins |
|
Used in coatings
In some coatings, if the content of the aldehyde resin of SA-81, SA-101 is too high, it will affect the coatings adhesion, flexibility or weatherability. The general content is 5-15%, the maximum shall not exceed 20%. If has special requirements, please self-adjustment according to test results. It also can be used to be directly additive of inks and coatings, the add amount is 5%
Application |
characteristic |
Usage amount |
Automotive refinishing coatings
|
Improve gloss and hardness, shorten drying time.
|
Usage amount is 2%-5%
|
Alkyd resin
|
Reduce the viscosity of alkyd resin, increase the hardness and gloss, improve drying property. |
Add 5%-10% aldehyde resin SA-81 at the final stage of synthetic resin
|
Alkyd/Amino baking coatings |
Improve hardness and fullness |
According to the quality request, replace the alkyd resin with the amount no more than 20%. |
NC coatings
|
Improve the performance of anti-UV, resistant to yellowing. Increase solid content and gloss .Improve the flexibility to aromatic solvent. |
Can replace NC (nitrocellulose) resin with the amount of 20%-30%. |
Alkyd/Chlorinated resin
Coatings
|
Increase the compatibility between chlorine ether and chlorinated rubber and alkyd resin, improve coatings gloss and solid content.
|
Can replace the alkyd resin with the amount no more than 10% |
Hot melts for road marking paint |
Good weatherability. Improve adhesion power, Reduce the amount of titanium dioxide in white road marking paint
|
Can be used alone or used with petroleum resin. |
Powder coatings
|
Improve flowability and adhesion power.
|
In epoxy powder coatings, SA-81 can replace the resin with amount of 5%-15%. In epoxy/polyester powder coatings, SA-81 can replace the resin with amount of 5%-15%. |
used in pigment paste（current paste）
The resin of SA-81 has very good solubility and compatibility, and has excellent pigment wetting property. It is very suitable as a carrier resin for pigment paste. With the appropriate dispersant, It can improve the color strength of pigment paste. In the application of current pigment paste, according to the request of user, the content of SA-81 can be controlled between 30% to 60%. As the carrier resin of pigment, SA-81 can great improve the pigment content after be made into current pigment paste. Also can make the paste has good stability in the storage and transportation. You can also reduce the number and variety of inventory paste volume. This improves the coating’s adaptability ability to the pigment variety changing. The resin can help pigment paste changed to coatings and putted into market in the shortest possible time. While reduce more than 30% of the cost compared with similar foreign products.
Used in inks
It can improve the compatibility between solvent, resin and colorant. It can improve the dispersion stability, gloss, transparency and adhesion power of inks.
|
