function checkPermissions(address _address) internal view returns (bool) {

        if( ( _address == adrInvestor || _address == adrDevTeam ) && ( block.timestamp < ITSEndTime ) ){
            return false;
        }else if( ( block.timestamp < unlockTimeF1 ) && ( _address == adrFounder1 ) ){
            return false;
        }else if( ( block.timestamp < unlockTimeF2 ) && ( _address == adrFounder2 ) ){
            return false;
        }else if ( _address == owner ){
            return true;
        }else if( block.timestamp < ITSEndTime ){
            return false;
        }else{
            return true;
        }
    }