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  <TITLE> Sipex Corporation (Form: 8-K) </TITLE>
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  		UNITED STATES<BR>
  	SECURITIES AND EXCHANGE COMMISSION
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  	WASHINGTON, D.C. 20549
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  	FORM 8-K
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  	CURRENT REPORT
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  	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
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  	Date of Report (Date of Earliest Event Reported):
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  	&nbsp;
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  	November 30, 2006
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  	Sipex Corporation
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  <BR>__________________________________________<BR>
  	(Exact name of registrant as specified in its charter)
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  	&nbsp;
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  	Delaware
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  	000-27892
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  	04-6135748
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  _____________________<BR>
  	(State or other jurisdiction
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  _____________<BR>
  	(Commission
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  ______________<BR>
  	(I.R.S. Employer
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  	of incorporation)
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  	File Number)
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  	Identification No.)
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  	&nbsp;&nbsp;
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  	233 South Hillview Drive, Milpitas, California
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  	&nbsp;
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  	95035
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  _________________________________<BR>
  	(Address of principal executive offices)
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  	&nbsp;
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  ___________<BR>
  	(Zip Code)
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  	Registrant&#146;s telephone number, including area code:
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  	&nbsp;
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  	408-934-7500
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  	Not Applicable
  <BR>______________________________________________<BR>
  	Former name or former address, if changed since last report
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  	&nbsp;
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  <!-- CoverPageRegistrant END --><P><FONT SIZE="2">
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:</FONT>
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  <P><FONT SIZE="2">
  [&nbsp;&nbsp;]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
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  	Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
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  On November 30, 2006, Sipex Corporation ("Sipex") amended its Amended and Restated Certificate of Incorporation pursuant to a filing with the Secretary of State of Delaware.  The amendment resets the terms of the classes of the members of its Board of Directors such that the Class I directors&#x2019; terms will expire at the first annual meeting of stockholders to be held after November 30, 2006, the Class II directors&#x2019; terms will expire at the second annual meeting of stockholders to be held after November 30, 2006, and the Class III directors&#x2019; terms will expire at the third annual meeting of stockholders to be held after November 30, 2006, with each class to hold office until its successor is duly elected and qualified.  At each succeeding annual meeting of stockholders, directors elected to succeed those directors whose terms expire shall be elected for a term of office to expire at the third succeeding annual meeting of stockholders after their election.  The stockholders approved this amendment at the Annual Meeting of Stockholders held on November 30, 2006.  A copy of the Certificate of Amendment is attached hereto as Exhibit 3.1 and is incorporated by reference herein. <br><br>Likewise, Sipex&#x2019;s bylaws were amended to conform them to the amendment to its certificate of incorporation discussed above.  The certificate of amendment effecting the amendment to the Amended and Restated By-laws is filed herewith as Exhibit 3.2 and is incorporated by reference herein.<br>
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  	Item 9.01 Financial Statements and Exhibits.
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  (c) Exhibits <br><br>3.1 Certificate of Amendment to Amended and Restated Certificate of Incorporation<br>3.2 Certificate of Amendment to Amended and Restated Bylaws<br>
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  	SIGNATURES
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  	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.
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  	Sipex Corporation
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  	&nbsp;&nbsp;
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  <I>
  	December 5, 2006
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  	&nbsp;
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  	By:
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  	&nbsp;
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  <I>
  	Clyde R. Wallin
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  	&nbsp;
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  <I>
  	Name: Clyde R. Wallin
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  <I>
  	Title: Chief Financial Officer, Senior VP of Finance and Secretary
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  	Exhibit&nbsp;Index
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  	Exhibit No.
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  	Description
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  	3.1
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  	&nbsp;
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  Certificate of Amendment to Amended and Restated Certificate of Incorporation
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  	3.2
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  	&nbsp;
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  Certificate of Amendment to Amended and Restated Bylaws
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "htm_16800.htm", "description": "LIVE FILING", "secsgml_size_bytes": 11717}]
metadata_filer: {"company-data": {"conformed-name": "SIPEX CORP", "cik": "0001007800", "assigned-sic": "3674", "irs-number": "046135748", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-27892", "film-number": "061258216"}, "business-address": {"street1": "233 SOUTH HILLVIEW DRIVE", "city": "MILPITAS", "state": "CA", "zip": "95035", "phone": "408-934-7500"}, "mail-address": {"street1": "233 SOUTH HILLVIEW DRIVE", "city": "MILPITAS", "state": "CA", "zip": "95035"}}
text: Sipex Corporation (Form: 8-K)
  UNITED STATES
  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):
  November 30, 2006
  Sipex Corporation
  __________________________________________
  (Exact name of registrant as specified in its charter)
  Delaware
  000-27892
  04-6135748
  _____________________
  (State or other jurisdiction
  _____________
  (Commission
  ______________
  (I.R.S. Employer
  of incorporation)
  File Number)
  Identification No.)
  233 South Hillview Drive, Milpitas, California
  95035
  _________________________________
  (Address of principal executive offices)
  ___________
  (Zip Code)
  Registrant's telephone number, including area code:
  408-934-7500
  Not Applicable
  ______________________________________________
  Former name or former address, if changed since last report
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:
  [  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  [  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  [  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  [  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
  Top of the Form
  Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
  On November 30, 2006, Sipex Corporation ("Sipex") amended its Amended and Restated Certificate of Incorporation pursuant to a filing with the Secretary of State of Delaware.  The amendment resets the terms of the classes of the members of its Board of Directors such that the Class I directors' terms will expire at the first annual meeting of stockholders to be held after November 30, 2006, the Class II directors' terms will expire at the second annual meeting of stockholders to be held after November 30, 2006, and the Class III directors' terms will expire at the third annual meeting of stockholders to be held after November 30, 2006, with each class to hold office until its successor is duly elected and qualified.  At each succeeding annual meeting of stockholders, directors elected to succeed those directors whose terms expire shall be elected for a term of office to expire at the third succeeding annual meeting of stockholders after their election.  The stockholders approved this amendment at the Annual Meeting of Stockholders held on November 30, 2006.  A copy of the Certificate of Amendment is attached hereto as Exhibit 3.1 and is incorporated by reference herein.
  Likewise, Sipex's bylaws were amended to conform them to the amendment to its certificate of incorporation discussed above.  The certificate of amendment effecting the amendment to the Amended and Restated By-laws is filed herewith as Exhibit 3.2 and is incorporated by reference herein.
  Item 9.01 Financial Statements and Exhibits.
  (c) Exhibits
  3.1 Certificate of Amendment to Amended and Restated Certificate of Incorporation
  3.2 Certificate of Amendment to Amended and Restated Bylaws
  Top of the Form
  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.
  Sipex Corporation
  December 5, 2006
  By:
  Clyde R. Wallin
  Name: Clyde R. Wallin
  Title: Chief Financial Officer, Senior VP of Finance and Secretary
  Top of the Form
  Exhibit Index
  Exhibit No.
  Description
  3.1
  Certificate of Amendment to Amended and Restated Certificate of Incorporation
  3.2
  Certificate of Amendment to Amended and Restated Bylaws