blueing after ageing of rigid PVC with stab Ca/Zn ?
blueing after ageing of rigid PVC with stab Ca/Zn ?
(OP)
In contrary to what we expected, a rigid PVC sheet (kw 66), stabilized with Ca/Zn soap (3.5 phr, with anti-UV Tinuvin 320 is becoming blue after ageing in a weatherometer. We suspect interaction between stabilizer and anti-UV. Do you have already heard baout something like that ?
Best regards
Xavier
Best regards
Xavier





RE: blueing after ageing of rigid PVC with stab Ca/Zn ?