Trigonox® BPIC-CH75, tert-butylperoxy isopropyl carbonate, is an aliphatic percarbonate, which is used for the curing of unsaturated polyester resins at elevated temperatures.
Trigonox® BPIC-CH75 is especially developed for the curing of UP resin based Hot Press Molding formulations (SMC, DMC, BMC etc) in the temperature range of 120 - 170°C.
Trigonox® BPIC-CH75 gives a long shelf life stability of the compound.
Trigonox® BPIC-CH75 can in comparison with Trigonox® C, tert-butyl peroxybenzoate, be characterized as a faster and more efficient peroxide. This means a faster and more optimal cure with a lower residual styrene content of the molded part. In combination with an optimal Low Profile or Low Shrink formulation a very smooth and regular surface of the moulded product can be achieved.
The decomposition products of Trigonox® BPIC-CH75 are low volatile compounds, which makes the peroxide very suitable for the production of e.g. microwave cookware.
For a further increase of the reactivity, Trigonox® BPIC-CH75 can be used in combination with a high reactive peroxide like Trigonox® 21 or Trigonox® 141.