Polypore International, Inc.

Strategic Profile

Polypore focused on high-performance filtration membranes for industrial applications, with particular strength in battery separator technology. Prior to acquisition, the company was recognized as a global leader with manufacturing and sales operations across nine countries serving six continents.

Cyborg Score Rationale

Polypore was acquired in February 2015 and is no longer an independent, publicly traded company. A cyborgScore is not applicable to an acquired private subsidiary.

Top Insights

• Acquired by Asahi Kasei Corporation in February 2015 for $60.50 per share
• 3M acquired Polypore's Separations Media assets for $1 billion as part of the transaction
• Company was pioneering in microporous membrane technology for ultrafiltration and microfiltration applications
• Maintained manufacturing footprint across nine countries with operations on six continents at time of acquisition

Named Competitors

• ENTEK — Major battery separator manufacturer producing PE, lithium, and AGM separators for EVs and energy storage
• Semcorp — Pure-play battery separator specialist competing in microporous membrane market
• Celgard — Specialist in dry-process lithium-ion battery separators with proprietary trilayer film technology
• Toray Industries — Japanese specialty polymer films company that historically produced separators (though currently retreating from market)

Recent Developments

• (February 2015) Acquired by Asahi Kasei Corporation for $60.50 per share
• (February 2015) 3M acquired Polypore's Separations Media division for $1 billion

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