# List of chemical companies in Connecticut

Tamtam tracks 25 chemical companies headquartered in Connecticut. This list ranks all of them by number of employees on LinkedIn, led by Praxair, Inc - a Linde Company, Tronox and Hexcel Corporation. Their median headcount is 344. Half of them were founded in 1956 or later. The most common headquarters are Waterbury (5), Stamford (4) and Danbury (3).

The chemical manufacturing sector in Connecticut is primarily composed of large and mid-sized companies, with a strong emphasis on specialty chemicals and industrial gases. Praxair, Inc - a Linde Company, is a global leader in industrial gases, while Tronox specializes in titanium dioxide. Hexcel Corporation produces carbon fiber reinforcements for aerospace, and MacDermid Alpha Electronics Solutions focuses on specialty chemicals for electronics manufacturing. Cristal is another major producer of titanium dioxide.

A notable cluster of these companies, including MacDermid Alpha Electronics Solutions, MacDermid Enthone Industrial Solutions, MacDermid Performance Solutions, and Drew Marine, are headquartered in Waterbury. This suggests a concentration of expertise in chemical manufacturing within that city.

🇺🇸 Connecticut · 25 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Praxair, Inc - a Linde Company](https://www.tamtam.ai/c/praxair-inc-a-linde-company) (lindeus.com)<br>A global leader in industrial gases and engineering, providing high-quality gases, technologies, and services to diverse markets while promoting sustainability and productivity | Chemical Manufacturing | 🇺🇸 Danbury | 6,549 |  |
| 2 | [Tronox](https://www.tamtam.ai/c/tronox) (tronox.com)<br>A global producer of titanium dioxide and inorganic chemicals, specializing in mining, processing, and manufacturing products for various industries worldwide | Chemical Manufacturing | 🇺🇸 Stamford | 5,877 | 2012 |
| 3 | [Hexcel Corporation](https://www.tamtam.ai/c/hexcel-corporation) (hexcel.com)<br>Production of carbon fiber reinforcements, resin systems, and honeycomb materials focused on lightweight solutions for commercial aerospace industry. | Aviation and Aerospace Component Manufacturing | 🇺🇸 Stamford | 3,357 | 1948 |
| 4 | [Cristal](https://www.tamtam.ai/c/cristal) (tronox.com)<br>A leading producer of titanium dioxide and zircon products, with a global footprint in mining, processing, and sale of mineral sands | Chemical Manufacturing | 🇺🇸 Stamford | 2,050 |  |
| 5 | [MacDermid Alpha Electronics Solutions](https://www.tamtam.ai/c/macdermid-alpha-electronics-solutions) (macdermidalpha.com)<br>Specializing in specialty chemicals for electronics manufacturing, the company offers innovative solutions for circuitry, interconnect materials, and device design optimization globally | Chemical Manufacturing | 🇺🇸 Waterbury | 2,043 |  |
| 6 | [Linde Gas & Equipment](https://www.tamtam.ai/c/linde-gas-and-equipment) (lindedirect.com)<br>A trusted provider of industrial gases, welding supplies, cutting machines, and automation, offering solutions to reduce costs and increase productivity | Chemical Manufacturing | 🇺🇸 Danbury | 1,552 |  |
| 7 | [MacDermid Enthone Industrial Solutions](https://www.tamtam.ai/c/macdermid-enthone-industrial-solutions) (macdermidenthone.com)<br>Global leader in manufacturing chemical compounds for surface coating applications, offering innovative solutions, sustainable technologies, and technical support to meet customer needs | Chemical Manufacturing | 🇺🇸 Waterbury | 961 | 1922 |
| 8 | [LATICRETE International](https://www.tamtam.ai/c/laticrete-international) (eu.laticrete.com)<br>Manufactures construction solutions: tile, masonry, flooring finishes, concrete chemicals, restoration systems; offers sustainable products for LEED certification with strong warranties. | Wholesale Building Materials | 🇺🇸 Bethany (New Haven) | 694 | 1956 |
| 9 | [MacDermid Performance Solutions](https://www.tamtam.ai/c/macdermid-performance-solutions) (macdermid.com)<br>Manufacture specialty chemicals and materials for electronics, printing, plating, and offshore oil industries using advanced technological processes. | Chemical Manufacturing | 🇺🇸 Waterbury | 622 |  |
| 10 | [Lydall](https://www.tamtam.ai/c/lydall) (lydall.com)<br>The company formerly known as Lydall and Unifrax is now Alkegen Stay updated with their new page @ALKEGEN | Industrial Machinery Manufacturing | 🇺🇸 Manchester | 537 |  |
| 11 | [Dymax](https://www.tamtam.ai/c/dymax) (dymax.com)<br>This company develops eco-friendly light-curable materials, dispense equipment, and UV/LED light-curing systems for OEMs in various major markets | Chemical Manufacturing | 🇺🇸 Torrington | 373 |  |
| 12 | [Unimin Corporation](https://www.tamtam.ai/c/unimin-corporation) (coviacorp.com)<br>A merger in 2018 created a diversified company offering various capabilities and services Follow the link to learn more | Mining | 🇺🇸 New Canaan | 349 |  |
| 13 | [Ulbrich Stainless Steels & Special Metals, Inc.](https://www.tamtam.ai/c/ulbrich-stainless-steels-and-special-metals-inc) (ulbrich.com)<br>Global manufacturer of precision metal products, processing over 180 alloys into custom strip, wire, sheet, plate, bar, foil, and ribbon products for various industries | Primary Metal Manufacturing | 🇺🇸 North Haven | 344 | 1924 |
| 14 | [MacDermid Enthone Electronics Solutions](https://www.tamtam.ai/c/macdermid-enthone-electronics-solutions) (macdermidenthone.com)<br>Researching, formulating, and delivering specialty chemistries for micro-scale circuitry, connecting people through the world's leading electronics products and services. | Chemical Manufacturing | 🇺🇸 Waterbury | 334 |  |
| 15 | [Drew Marine](https://www.tamtam.ai/c/drew-marine) (drew-marine.com)<br>Global leader in providing technical solutions and services to the maritime industry for over 80 years, offering a wide range of products and services worldwide | Chemical Manufacturing | 🇺🇸 Waterbury | 328 | 1920 |
| 16 | [Mobil Chemical Company](https://www.tamtam.ai/c/mobil-chemical-company) (exxonmobilchemical.com)<br>Offering a wide range of petrochemical and polymer products, with upcoming updates on MCC content | Chemical Manufacturing | 🇺🇸 Stratford | 244 | 1960 |
| 17 | [Rosco](https://www.tamtam.ai/c/rosco) (us.rosco.com)<br>A leading manufacturer of lighting filters, gobos, scenic paints, LED fixtures, fog machines, and dance floors for the entertainment industry worldwide | Entertainment Providers | 🇺🇸 Stamford | 236 | 1910 |
| 18 | [Simoniz USA, Inc.](https://www.tamtam.ai/c/simoniz-usa-inc) (simoniz.com)<br>Manufactures and distributes a diverse line of cleaning products for commercial, retail, and institutional markets, including vehicle washing, detailing, and janitorial supplies. | Chemical Manufacturing | 🇺🇸 Bolton | 224 | 1911 |
| 19 | [Putnam Plastics](https://www.tamtam.ai/c/putnam-plastics) (putnamplastics.com)<br>Specializing in thermoplastic extrusion and polyimide tubes, the company provides solutions for catheters and medical devices, offering custom prototype development through manufacturing | Medical Equipment Manufacturing | 🇺🇸 Dayville | 219 | 1984 |
| 20 | [PTA Plastics](https://www.tamtam.ai/c/pta-plastics) (ptaplastics.com)<br>A custom plastic injection molder with focus on engineering, low/medium volume, high mix solutions for medical, defense, and business industries | Plastics Manufacturing | 🇺🇸 Oxford | 205 | 1953 |
| 21 | [ATMI](https://www.tamtam.ai/c/atmi-danbury) (atmi.com)<br>Global leader in process solutions for semiconductor and life science industries, developing innovative technologies and solutions to meet high-tech marketplace needs Engaging culture and rewarding performance | Semiconductor Manufacturing | 🇺🇸 Danbury | 65 | 1986 |
| 22 | [Element 119 - High Performance Coating Technologies](https://www.tamtam.ai/c/element-119-high-performance-coating-technologies) (element119.com)<br>Industry leader in ceramic coatings for automotive, marine, and aviation industries Offers premium products, partnerships with detailers, and high-performance coating technologies | Chemical Manufacturing | 🇺🇸 Thomaston | 40 | 2010 |
| 23 | [Hampford Research Inc](https://www.tamtam.ai/c/hampford-research-inc) (hampfordresearch.com)<br>Specialty chemical manufacturer in electronics, adhesive, printing, personal care/dental industries Known for intelligence, service, fostering alliances, partnerships, and continuous improvement | Chemical Manufacturing | 🇺🇸 Stratford | 31 | 1982 |
| 24 | [Colt's Plastics Company, Inc.](https://www.tamtam.ai/c/colt-s-plastics-company-inc) (coltsplastics.com)<br>A Connecticut-based plastics company specializing in manufacturing and distributing various plastic products | Plastics Manufacturing | 🇺🇸 Dayville | 26 |  |
| 25 | [HAWK INTEGRATED PLASTICS LLC](https://www.tamtam.ai/c/hawk-integrated-plastics-llc) (hawkiplas.com)<br>Specializing in precision injection molding, the company offers high-quality manufacturing solutions with expertise in efficient and accurate injection molding processes | Plastics Manufacturing | 🇺🇸 Columbia | 4 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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## The same list elsewhere

- [Chemical companies in the world](https://www.tamtam.ai/l/chemical-companies-in-the-world) (6,503)
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Source: https://www.tamtam.ai/l/chemical-companies-connecticut