13 Pa.C.S. § 9401: Alienability of debtor's rights.

(a) Other law governs alienability; exceptions.--Except as otherwise provided in subsections (b) and (c), whether a debtor's rights in collateral may be voluntarily or involuntarily transferred is governed by law other than this division.

(b) Agreement does not prevent transfer.--An agreement between the debtor and secured party which prohibits a transfer of the debtor's rights in collateral or makes the transfer a default does not prevent the transfer from taking effect.

(c) Exceptions.--Subsection (a) is also subject to the following:

(1) section 9406 (relating to discharge of account debtor; notification of assignment; identification and proof of assignment; restrictions on assignment of accounts, chattel paper, payment intangibles and promissory notes ineffective);

(2) section 9407 (relating to restrictions on creation or enforcement of security interest in leasehold interest or in lessor's residual interest);

(3) section 9408 (relating to restrictions on assignment of promissory notes, health-care-insurance receivables and certain general intangibles ineffective); and

(4) section 9409 (relating to restrictions on assignment of letter-of-credit rights ineffective).