SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)      December  3, 1996

                                     ENZON, INC.
             (Exact name of registrant as specified in its charter)



Delaware                             0-12957              22-237286
- -------------------------------------------------------------------
(State or other jurisdiction      (Commission          (IRS Employer
 of incorporation)                File Number)          Identification)



                20 Kingsbridge Road, Piscataway, New Jersey 08854
               (Address of principal executive offices) (Zip Code)



Registrant's telephone number, including area code    (908) 980-4500




          (Former name or former address, if changed since last report)






Item 5.  Other Events

                  Enzon,  Inc. (the "Enzon" or the  "Company")  announced at the
1996 Annual Meeting of Shareholders  that under Enzon's agreement with the Green
Cross  Corporation,  a Japanese  pharmaceutical  company,  for recombinant Human
Serum  Albumin,  (rHSA) is currently in Phase III clinical  trials in Japan as a
blood  volume  expander.  The  market  in Japan for rHSA is  approximately  $400
million.  While  the  agreement  entitles  Enzon to a  customary  pharmaceutical
royalty on product  sales,  Green Cross has requested  reduction of the royalty.
Enzon is considering all its options under the agreement.



                                      - 2 -





                                   SIGNATURES


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.




Dated:  December 19, 1996



                                                                     ENZON, INC.
                                                                    (Registrant)

                                                   By:    /S/KENNETH J.ZUERBLIS
                                                             Kenneth J. Zuerblis
                                                         Vice President, Finance
                                                             and Chief Financial
                                                                         Officer