By RCC do you mean the 'Roman Catholic Church'? The term 'Roman Catholic Church' is not the proper name of the Catholic Church and it is not used by the Church herself. The proper name of the Catholic Church is simply the "Catholic Church".
To answer your question, the term "The Catholic Church" was adopted sometime in the First Century A.D.
The earliest recorded evidence of the use of the term "the catholic church" can be found in Saint Ignatius of Antioch's letter to the Christians in Smyrna in approximately AD 110.
It can also be found in the Nicene Creed which refers to the "one, holy, catholic and apostolic Church." As the Creed was formalized over a millenium before the reformation, the name was not attempting to address divisions which arose much later among the Churches.
Incidentally, other Christian churches have names such as "The United Methodist Church", "The Church of England" and there's also the Southern Baptist Convention. I don't think in any of these cases they are "detaching" themselves from the word Christian in how they identify themselves to the world.
I agree with you, but weirdly the vatican website has about 700 hits for the term "roman catholic church"... MOST of those hits seem to come from the Pontifical Council for Promoting Christian Unity, Kasper's old stomping grounds.
The earliest recorded evidence of the use of the term "the catholic church" can be found in Saint Ignatius of Antioch's letter to the Christians in Smyrna in approximately AD 110.
You own a used car lot as well??? Why do you guys always refer to Ignatius' forged writings??? And Catholic is not the same as catholic...