The Sanmar Group
How a Chennai Chemist Built a Billion-Dollar Conglomerate by Knowing Exactly What to Exit
THE MOMENT
In 2006-07, N. Sankar faced a problem that most industrialists would have ignored. His new PVC plant at Cuddalore, Tamil Nadu — a ₹520 crore greenfield investment — was designed to use a one-step process converting Vinyl Chloride Monomer into PVC. The margin on this process was thin. Without backward integration into VCM production, the Cuddalore plant would always be a price-taker, vulnerable to every swing in global VCM markets.
That concern led Sankar to Egypt. A company called Trust Chemical Industries — sitting on cheap energy, existing infrastructure, and the ability to produce VCM — appeared on his radar. The acquisition price would be substantial. The complexity of managing a manufacturing operation in Egypt was significant. But the logic was Sanmar's founding logic: do not own a product unless you own its feedstock. Sankar acquired Trust Chemical. Then he invested $850 million to expand it into a full VCM and PVC complex.
The Turnaround at a Glance
The Sanmar Group
Timeline
1967
N. Sankar joins Chemplast as Assistant GM; PVC market collapses; worst years for the company
1972
Sankar acquires Industrial Chemicals Limited at age 26; turns it around through price discipline
1985
Acquires controlling stake in Mettur Chemicals — backward integration into caustic chemicals begins
2000s
Restructures group into clearly defined businesses; exits non-core operations; separates ownership from management
2006
Acquires Trust Chemical Industries, Egypt — backward integration into VCM/PVC manufacturing
2007
Acquires Matrix Metals, USA — global steel casting footprint; Sanmar becomes top-10 global foundry
Before → After
PVC Capacity
Revenue
International Revenue Share
Business Countries
The Playbook Move
MOVE 2 — CUT TO THE CORE
Sanmar exited non-core businesses, separated ownership from management, and concentrated capital on chemicals, metals, and shipping — then used that concentration to build one of India's most quietly formidable industrial conglomerates through vertical integration and global acquisitions.
“Our strength has always been the bottom line. When opportunities came together, we were ready to take advantage of them.”
— N. Sankar, Founder, The Sanmar Group
THE COMPANY BEFORE
The Sanmar Group's origins trace to Chemplast — founded in 1962 to manufacture PVC resins and pipes in Tamil Nadu — a company that N. Sankar joined as Assistant General Manager in 1967 after returning from the Illinois Institute of Technology. He arrived to find the company in crisis: the PVC market had collapsed, competition was unhealthy, and there was no clear direction.
By 1972, the PVC market had recovered enough for Chemplast to stabilise. Sankar, then 26 years old, made his first entrepreneurial move: he acquired Industrial Chemicals Limited, a small company manufacturing calcium carbide. 'I was 26 and brash,' he said. 'By increasing the price and implementing some technical improvements, I put the company on a sounder financial footing.' The surplus from Industrial Chemicals funded his first joint venture with an American company — Durametallic — and the Sanmar Group was born.
THE CRISIS
Through the 1980s and 1990s, the Sanmar Group built a reputation as one of South India's most reliable joint venture partners. Bayer, Cabot Corporation, AMP Australia, Tyco International — all chose Sanmar as their Indian partner because Sankar was known for ethical dealing, precise communication, and operational follow-through. But with growth came complexity: the group had spread across chemicals, shipping, engineering, finance, and insurance.
By the late 1990s, Sanmar faced a crisis common to diversified conglomerates: too many businesses, insufficient management depth, blurred strategic priorities. Some joint ventures were not working. Some businesses had no path to scale. The group had grown horizontally rather than deeply. The challenge was not financial collapse — it was the quiet erosion of focus that eventually destroys value.
THE LEADERSHIP DECISION
Sankar's response was to restructure the group with a discipline that most founders avoid: exit everything that does not fit. He separated ownership from management — bringing in professional managers for businesses where family involvement added no value. He restructured the group into clearly defined segments: Chemicals (PVC, caustic chemicals, specialty chemicals), Shipping, Engineering, and Metals. Businesses outside these lanes were sold.
His son Vijay Sankar, who joined the group and became Deputy Chairman, later articulated the principle: 'We restructured the group into clearly defined businesses, and exited non-core operations. We also separated ownership from management, and invested in human resources. These measures laid a strong foundation for future growth.' When opportunities came — the Cuddalore expansion, the Egyptian acquisition, the Matrix Metals purchase — the lean, focused Sanmar was ready to move fast.
Sankar also made a principle of going only with market leaders in joint ventures. He would not partner with a mid-tier foreign company. If the collaboration was with Cabot, it had to be with the world's leading carbon black and fumed silica manufacturer. If it was in chemicals, the partner had to be among the global top three in that category. This insistence on world-class partners was itself a quality filter: it ensured that the technology and operational standards inside Sanmar's plants were always among the best available globally.
THE STRATEGIC PIVOT
Sanmar's strategic pivot was backward integration — relentlessly, in every business. In PVC, they moved from PVC products to PVC resin, to the chemicals that feed PVC resin production (caustic soda, VCM), to the energy and feedstock that feed those chemicals. The Egypt acquisition was not a geographic diversification — it was a feedstock acquisition that happened to require going to a different country.
In metals, the acquisition of Matrix Metals in Viralimalai, Trichy (India) and later Matrix Metals in the USA gave Sanmar a global steel casting business — one of the top ten foundries in the world by capacity, and potentially top three in steel casting capacity. The logic was the same: integrated, vertically controlled, with manufacturing on multiple continents.
By 2010-11, the group was projecting revenues of ₹7,000 crore with 45% coming from outside India. The chemical complex at Cuddalore — the largest PVC project in Tamil Nadu — had been funded partly through backward integration with the Egyptian VCM plant. Almost every Sanmar investment was a node in a larger supply chain that Sanmar was progressively controlling end to end.
MARKET REACTION
Sanmar's growth was largely invisible to the national media for decades. The group was Chennai-based, chemicals-focused, and famously media-shy. Sankar himself never sought publicity. The group did not even have a name until years into its existence — the combination of N. Sankar and N. Kumar's names gave it the Sanmar identity only gradually.
The ₹3,580 crore IPO of Chemplast Sanmar in August 2021 — the company's first public market transaction — brought Sanmar into broader investor consciousness. The investment by Prem Watsa's Fairfax India Holdings since 2016 had already signalled that international value investors had noticed a business building in patient obscurity. The IPO was oversubscribed. The market had finally caught up with a company that had been compounding quietly for five decades.
THE FACTORY FLOOR
Sanmar's chemical facilities are among the most environmentally disciplined in Indian industry. Chemplast Sanmar implemented Zero Liquid Discharge across all its manufacturing plants — the Mettur plant has not discharged treated effluent since September 2009. The Cuddalore and Karaikal plants have never discharged treated effluent in their operating history. This discipline was not imposed by regulation — it was built into the plants' design before regulations required it.
The manufacturing footprint today spans Tamil Nadu (Mettur, Panruti, Cuddalore, Berigai, Ponneri, Vedaranyam), Maharashtra (Shinoli), and the Union Territory of Puducherry (Karaikal) in India, plus Egypt and the USA for metals. Aggregate PVC capacity of 2,35,000 TPA makes Sanmar India's second-largest PVC player after Reliance Industries. The Custom Manufactured Chemicals division — producing intermediates for global agrochemical, pharmaceutical, and fine chemical companies — adds a high-margin specialty stream.
THE RESULTS
THE PLAYBOOK MOVE
PLAYBOOK MOVE 2 — CUT TO THE CORE: Sanmar exited non-core businesses, separated ownership from management, and concentrated capital on chemicals, metals, and shipping — then used that concentration to build one of India's most quietly formidable industrial conglomerates through vertical integration and global acquisitions.
THE LESSON
The Feedstock Principle
Sanmar's deepest strategic insight is the feedstock principle: never own a product without owning what it is made from. Every Sanmar investment — from Mettur Chemicals to the Egyptian VCM plant — was a backward integration that reduced the group's vulnerability to input price volatility. A company that controls its feedstock cannot be squeezed out of its margins by suppliers. A company that does not control its feedstock is permanently hostage to those who do.
In your supply chain, which input cost do you have no control over? And what would backward integration into that input cost you — versus what it would cost you not to do it over the next decade?