Product Description:
FR-KSS is a kind of flame retardant with white powder and sulfonic acid. The product has been applied to the flame retardant polycarbonate for more than 25 years. FR-KSS does not affect the transparency of polycarbonate, because it has the same refractive index as polycarbonate. FR-KSS is more economical than other sulfonic salts.


Reference formula:
Transparent PC reference formula
Use MIF=3, UL94, V0,3.2mm MIF=10, UL94, V0,2.6mm MIF=20, UL94, V0,1.6mm
Formula content ratio%
PC 99.80 99.55 95.80
FR-KSS 0.20 0.20 0.20
Methyl phenyl siloxane - - - - 0.25 4




Semitransparent PC reference formula, semitransparent PC reference formula
Use MFI=20, UL94, V0,1.6mm
Formula content ratio%
PC 97.30 87.30
Glass fiber - - - 10
FR-KSS 0.40 0.40
Methyl phenyl siloxane 4 2
PTFE 0.30 0.30




Matters needing attention:
FR-KSS is easy to deliquescence, if there is a need in the deliquescence, heating temperature of 110 DEG C for 3-4 hours to ensure that the water content of less than 0.5%. Otherwise, it will affect the quality of the flame retardant PC. During the use, dispersants, such as PETS or other heat-resistant dispersants, can be added to improve dispersion and synergistic anti dropping agents.




Product packaging:
20KG/ bag (paper plastic bag), pay attention to moisture proof seal preservation.