This excerpt taken from the PBR 6-K filed Nov 17, 2006.
c) Resolution by the PETROQUISA EGM
On October 31, 2006, the Extraordinary General Meeting held by the shareholder PETROQUISA approved the following:
Based on the proposal made by the Board of Directors at Meeting 604 held September 22, 2006, to cancel the listed company status held by Petrobras Química S.A. PETROQUISA at the Brazilian Securities Commission - CVM, as its shares are no longer being traded on the stock exchange and over-the-counter market.
The Protocol for the merger of PETRORIO PETROQU¥MICA DO RIO DE JANEIRO S.A. by PETROBRAS QU¥MICA S.A. - PETROQUISA, executed by the companies administrators on September 22, 2006.