A security interest attaches to collateral when it becomes enforceable against the debtor with respect to the collateral, unless an agreement expressly postpones the time of attachment.
Except as otherwise provided in subsections (c) through (i), a security interest is enforceable against the debtor and third parties with respect to the collateral only if :
(1) value has been given;
(3) one of the following conditions is met:
(C) the collateral is a certificated security in registered form and the security certificate has been delivered to the secured party under Section 8-301 pursuant to the debtor's security agreement; or
(D) the collateral is deposit accounts, electronic chattel paper, investment property, or letter-of-credit rights, and the secured party has control under Section 9-104, 9-105, 9-106, or 9-107 pursuant to the debtor's security agreement.
Subsection (b) is subject to Section 4-210 on the security interest of a collecting bank, Section 5-118 on the security interest of a letter-of-credit issuer or nominated person, Section 9-110 on a security interest arising under Article 2 or 2A, and Section 9-206 on security interests in investment property.
(1) the security agreement becomes effective to create a security interest in the person's property; or
(2) the person becomes generally obligated for the obligations of the other person, including the obligation secured under the security agreement, and acquires or succeeds to all or substantially all of the assets of the other person.
(1) the agreement satisfies subsection (b)(3) with respect to existing or after-acquired property of the new debtor to the extent the property is described in the agreement; and
(2) another agreement is not necessary to make a security interest in the property enforceable.
The attachment of a security interest in collateral gives the secured party the rights to proceeds provided by Section 9-315 and is also attachment of a security interest in a supporting obligation for the collateral.
The attachment of a security interest in a right to payment or performance secured by a security interest or other lien on personal or real property is also attachment of a security interest in the security interest, mortgage, or other lien.
The attachment of a security interest in a securities account is also attachment of a security interest in the security entitlements carried in the securities account.