(a) This section applies only to a security interest granted by:
(1) a corporation as security for its bonds;
(2) a credit agreement pledged as security for the obligations of the corporation on the bonds; or
(3) a credit agreement issued or entered into in connection with the bonds.
(b) Notwithstanding Section 9.109(d), Business & Commerce Code, and without any other filing, a security interest is perfected until payment of the bonds and credit agreement, with the effect specified by Chapter 9, Business & Commerce Code, when the bonds are registered by the comptroller and the proceedings authorizing the bonds are filed with the comptroller.