That's funny. The Dura-Ace 7700 bottom bracket is advertised and sold as a sealed cartridge bottom bracket. Meaning it's designed to not need to be overhauled until replacement. Doesn't mean that it can't be taken apart, only that it shouldn't need to be taken apart and serviced during it's service life. Anything can be taken apart with determination, the problem usually comes when trying to reassemble.

I stopped using Phil's (Phil Wood) grease after finding it melting and leaking out of wheel bearing and bottom brackets when I was taking bikes off the roof rack of my car when I was arriving at the bike trail head. Just the trip in the sun from my house to the Orange County bike path was heating the Phil Wood enough that it was melting and running out of the bearing, and dripping onto the roof of the car.

After that, I did an informal test of about five kinds of greases in the middle of summer pacing dollops of different greases on a piece of cardboard to see what the heat would do to them. The winner was Valvoline Synthetic Automotive Grease. After sitting in the sun (sometimes over 105 degrees and cold down to the 50 degree range for four weeks, it did not change states or even start to break down. It just sat there. The other grease melted down, changed physical condition, changed shape, or changed color. The Phil Wood was a greasy looking spot/memory, having completely melted, and absorbed into the cardboard.