The SMC/BMC material is prepared with a combination of peroxides and inhibitors to secure sufficient shelf life during storage, while at the same time providing high-reactivity and efficient curing during pressing, leading to low residual styrene levels and high-surface quality.
The main peroxides used in SMC/BMC are Trigonox® 21S in combination with Trigonox C or Trigonox 22-C50.
Alternatively one can choose Trigonox 21LS, which allows for longer storage stability of the SMC/BMC or Trigonox 141 for high reactivity or Trigonox BPIC-C75 for a more smooth cure.
For PMC (in-mold Powder Coating), Perkadox® 14 and Perkadox BC are used which are reactive at high curing temperatures.
The end products are very diverse and include components for the automotive, electrical and building industry.
|Product groups||Characteristics||Main applications|
|Organic peroxide curing agent||Unsaturated polyester, vinyl ester and (meth)acrylate resin curing systems|
|Butanox||The world’s leading MEKP brand for the polyester composite industry|
|Accelerators||For thermoset composites|
|Promoters and inhibitors||For thermoset composite curing|