Basic Uniform Commercial Code

Purchase-Money Collateral

"purchase-money collateral" means goods or software that secures a purchase-money obligation incurred with respect to that collateral; and

Purchase-Money Obligation

"purchase-money obligation" means an obligation of an obligor incurred as all or part of the price of the collateral or for value given to enable the debtor to acquire rights in or the use of the collateral if the value is in fact so used.

You have to have an obligation to use the money in that way.