Metabolix To Showcase Advances In PHA Performance Modifiers For PLA

     Metabolix To Showcase Advances In PHA Performance Modifiers For PLA

Metabolix Develops New PHA Biopolymer Modifiers to Improve Performance of PLA
While Retaining Clarity, Biobased Properties and Compostability; Developments
to be Presented at Innovation Takes Root 2014

PR Newswire

CAMBRIDGE, Mass., Feb. 18, 2014

CAMBRIDGE, Mass., Feb. 18, 2014 /PRNewswire/ -- Metabolix, Inc. (NASDAQ:
MBLX), an innovation-driven performance biomaterials company delivering
sustainable solutions to the plastics, chemicals and energy industries, today
announced recent advancements in the development of the Company's PHA
(polyhydroxyalkanoate) biopolymer technology. Rubber modifiers are introduced
for improving the performance of PLA (polylactide) biopolymers. Metabolix Vice
President, Biopolymers, Bob Engle will present these developments at the
Innovation Takes Root 2014 Conference, taking place February 17 – 19 in
Orlando, Florida.

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Metabolix has developed new amorphous PHA biopolymers with the physical
characteristics of a low Tg rubber. These new rubber modifiers have been shown
to improve the ductility and flexibility of PLA, while also retaining clarity
and compostability. In PLA extrusion applications, Mirel^TM rubber modifiers
lower stiffness and brittleness and improve tactile feel. In PLA film
applications these rubber modifiers also increase tear resistance. PHA and PLA
biopolymers are both biobased and compostable, making them attractive for
sustainability and performance-driven business opportunities. 

"Metabolix continues to make great progress in the use of our core PHA
technology as a performance-driven modifier in applications where improved
performance of both biobased and conventional polymers such as PLA and PVC is
desired," said Joseph Shaulson, president and CEO of Metabolix. "In this case,
Mirel rubber modifiers have the potential to expand the application space for
PLA which may lead to new business opportunities."

"These innovative Mirel rubber modifiers are an exciting extension to the
Metabolix PHA technology platform. Their capability to modify and improve PLA
demonstrates performance that is comparable to traditional non-renewable
rubber modifiers without compromising the renewable nature of PLA or key
features of clarity and compostability," added Bob Engle, vice president,
biopolymers of Metabolix. "We look forward to presenting our new biobased
rubber modifiers for PLA at Innovation Takes Root.

"Overview of Innovation Takes Root 2014 Panel Presentation:

"Metabolix Launches PHA Modifiers for PLA in 2014," part of "Broadening the
Application Space for Ingeo Films" Panel
Tuesday, February 18 at 2:00 p.m., Grand Ballroom 1-2

Engle will present data showcasing Metabolix's extended range of PHA
compositions into the amorphous regime to offer a unique way to compound PLA.
The Metabolix bio-elastomers modify PLA, improving physical properties without
compromising clarity. In PLA films, Metabolix modifiers lower the modulus and
improve tear resistance. In extruded and molded parts, the PHA modifiers
improve ductility and reduce brittle fracturing. Distinctly high bio-content
and biodegradability set Metabolix PHA modifiers apart from traditional
non-renewable counterparts.

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,;
Media Inquiries: MSLGROUP, Keith Giannini or Danielle Kirsch at 781-684-0770
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