Poor credit scores are usually an indicator of mismanaged finances and a lack of financial responsibility. This is a risk factor. While I appreciate the open and honest disclosure of this information on this thread (which speaks in your favor) the risk of lending on the strength of private equity assets outweighs the positive aspects of your loan proposal.
A bad credit rating is also a warning sign of past repayment issues which of course will affect how lenders feel about entrusting you with a loan. Because of this risk factor, they will want valid and solid collateral.
This is not to judge you unfairly. I know nothing about the cause of your bad credit score so it would be wrong of me to assume or presume anything about your integrity. Im just commenting here based on a general sense of how bad credit affects a lenders impression about borrowers, particularly if large amounts are being discussed.