The PCT does not provide for the possibility of filing a divisional application. A divisional application with an international application as its parent application may not be filed with the EPO as designated/elected Office unless the parent application has validly entered the European phase (see point 676).
GL/EPO E‑VIII, 2.4.1
Source: http://www.epo.org/applying/international/guide-for-applicants/html/e/ga_b_16.html
Date retrieved: 30 December 2018