Data Shows Metabolix Biobased PHA Copolymers Enhance Processing, Properties and Performance of Recycled PVC

 Data Shows Metabolix Biobased PHA Copolymers Enhance Processing, Properties
                       and Performance of Recycled PVC

Company to Present Performance Data on New Biobased Additive for Recycled PVC,
I6003rp, at Vinyltec Conference

PR Newswire

CAMBRIDGE, Mass. and ISELIN, N.J., Oct. 22, 2013

CAMBRIDGE, Mass. and ISELIN, N.J., Oct. 22, 2013 /PRNewswire/ -- Vinyltec 2013
-- Metabolix, Inc. (NASDAQ: MBLX), an innovation-driven performance
biomaterials company delivering sustainable solutions to the plastics,
chemicals and energy industries, today announced that new biobased polymeric
modifiers designed by Metabolix enhance the processing and properties of
recycled polyvinyl chloride (PVC). Senior Polymer Scientist Dr. Yelena Kann,
Ph.D., will present new data during the Society of Plastics Engineers'
Vinyltec 2013 conference in a presentation titled, "PHA Copolymers as Recycled
PVC Property Enhancers," on Wednesday, October 23, 2013.

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The new findings to be presented by Dr. Kann will demonstrate the benefits of
PHA-based copolymers in the processing of recycled PVC. When using this
modifier at traditional levels in medical and general grade PVC recylates,
Metabolix polymeric modifiers improve key PVC properties such as tensile
toughness, hardness and tear resistance. The data also show that these new
biobased modifiers act as robust process aids, offering excellent inherent
miscibility in PVC and enabling improved processing that lowers torque and
enhances flow.

"Metabolix continues to make great strides in the development of biobased
property modifiers and processing aids for new and recycled PVC. Earlier this
month, Metabolix launched its new biobased polymeric modifier, I6003rp, for
recycled PVC. We are excited to present our latest findings at Vinyltec 2013
showing how our products upgrade the physical properties and value of PVC
recyclates," said Bob Engle, vice president, biopolymers, at Metabolix. "The
presentation will arm converters and compounders with new data on the use of
this modifier to enable increased usage of scrap material without compromising

Dr. Kann's presentation will take place on Wednesday, October 23 at 2:30 p.m.
at the Renaissance Woodbridge Hotel in Iselin, New Jersey. The data builds on
Dr. Kann's presentation from last year's Vinyltec conference, where she
presented findings on the use of PHA-based copolymers in improving the
toughness and permanence characteristics of flexible and semi-rigid PVC.

Metabolix currently offers two biobased performance additives for PVC,
including I6003rp for recycled PVC and I6001, a biobased polymeric modifier
for flexible and semi-rigid PVC that brings toughness, elongation and
plastification without migration or compromising clarity.

About Metabolix

Metabolix, Inc. is an advanced biomaterials company that is well positioned to
address growing market demand for sustainable solutions in the plastics,
chemicals and energy industries. The Company is developing and commercializing
a family of high-performance biopolymers targeted to the markets for film and
bag applications, performance additives and functional biodegradation.
Metabolix's biobased chemicals platform is focused on high-value segments and
applications using its novel "FAST" recovery process. The Company also is
developing a platform for co-producing plastics, chemicals and energy from
crops. Metabolix has established an industry-leading intellectual property
portfolio that, together with its knowledge of advanced industrial practice,
provides a foundation for industry collaborations.

For more information, please visit 

Safe Harbor for Forward-Looking Statements

This press release contains forward-looking statements which are made pursuant
to the safe harbor provisions of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended.
The forward-looking statements in this release do not constitute guarantees of
future performance. Investors are cautioned that statements in this press
release which are not strictly historical statements, including, without
limitation, statements regarding expectations for market demand and Metabolix
product development, constitute forward-looking statements. Such
forward-looking statements are subject to a number of risks and uncertainties
that could cause actual results to differ materially from those anticipated,
including the risks and uncertainties detailed in Metabolix's filings with the
Securities and Exchange Commission. Metabolix assumes no obligation to update
any forward-looking information contained in this press release or with
respect to the announcements described herein.


SOURCE Metabolix, Inc.

Contact: Metabolix Contact: Lynne H. Brum, 617-682-4693,;
or Media Inquiries: Schwartz MSL Boston, Keith Giannini or Shweta Agarwal,
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