§12A-9-314.

§12A-9-314.
   
   (1) A security interest in goods which attaches before they are
   installed in or affixed to other goods takes priority as to the goods
   installed or affixed (called in this section "accessions") over the
   claims of all persons to the whole except as stated in subsection (3)
   and subject to Section 9-315(1).
   
   (2) A security interest which attaches to goods after they become part
   of a whole is valid against all persons subsequently acquiring
   interests in the whole except as stated in subsection (3) but is
   invalid against any person with an interest in the whole at the time
   the security interest attaches to the goods who has not in writing
   consented to the security interest or disclaimed an interest in the
   goods as part of the whole.
   
   (3) The security interests described in subsections (1) and (2) do not
   take priority over
   
   (a) a subsequent purchaser for value of any interest in the whole; or
   
   (b) a creditor with a lien on the whole subsequently obtained by
   judicial proceedings; or
   
   (c) a creditor with a prior perfected security interest in the whole
   to the extent that he makes subsequent advances
   
   if the subsequent purchase is made, the lien by judicial proceedings
   obtained or the subsequent advance under the prior perfected security
   interest is made or contracted for without knowledge of the security
   interest and before it is perfected. A purchaser of the whole at a
   foreclosure sale other than the holder of a perfected security
   interest purchasing at his own foreclosure sale is a subsequent
   purchaser within this section.
   
   (4) When under subsections (1) or (2) and (3) a secured party has an
   interest in accessions which has priority over the claims of all
   persons who have interests in the whole, he may on default subject to
   the provisions of Part 5 remove his collateral from the whole but he
   must reimburse any encumbrancer or owner of the whole who is not the
   debtor and who has not otherwise agreed for the cost of repair of any
   physical injury but not for any diminution in value of the whole
   caused by the absence of the goods removed or by any necessity for
   replacing them. A person entitled to reimbursement may refuse
   permission to remove until the secured party gives adequate security
   for the performance of this obligation.