Section 465. Effect of denial of support in action for separation

After
  final adjudication of an action for  separation  in  which  the  supreme
  court  denies  support  to  a  spouse,  the family court may entertain a
  petition and make an order for support of such spouse
    (a) under section four hundred forty-two of this  article  if  in  the
  opinion  of  the  family  court  the  circumstances  of the parties have
  changed, or
    (b) under section four hundred forty-five of this  article  if  it  is
  shown  to  the  satisfaction  of the family court that the petitioner is
  likely to become in need of public assistance or care.