Company lists · Data refreshed September 2026

Top 25 Additives for plastics manufacturers based in the United States

RevenueBase identified 134 additives for plastics manufacturers headquartered in the United States as of September 2026 and tracks 9,304 professional contacts across them, including 3,032 with verified work emails. Houston is the largest hub.

This list covers additives for plastics manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
134Companies
9,304Contacts tracked
3,032Verified emails
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The 25 largest additives for plastics manufacturers based in the United States

Ranked by team size
Top 25 of 134 additives for plastics manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to additives for plastics manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceThe Woodlands, TX, United StatesHQ checked Sep 16, 20261,001-5,0001,665 contacts →

Indirect evidence

“At SI Group, we create smart chemistry that solves global challenges and makes great things possible.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceEast Windsor, NJ, United StatesHQ checked Sep 16, 20261,001-5,000997 contacts →

Indirect evidence

“Elementis is a global specialty chemical company, with 1,300 employees operating 17 manufacturing sites across the globe.”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 202610001+703 contacts →

Indirect evidence

“A.”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceRichmond, IN, United StatesHQ checked Sep 16, 20261,001-5,000369 contacts →

Partial evidence

“Primex, founded in 1965, is a global leader in the extruded plastics industry.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceBoston, NC, United StatesHQ checked Sep 16, 2026501-1,000281 contacts →

Indirect evidence

“Alphagary, an Orbia business, is pioneering innovation solutions to advance life around the world.”

Source: RevenueBase Database · checked Sep 16, 2026
6Strong evidenceSpartanburg, SC, United StatesHQ checked Sep 16, 20265,001-10,000277 contacts →

Strong evidence

“We’re continually developing innovative solutions in plastics additives, colorants, silicones and chemical intermediates that help to create a better tomorrow.”

Source: RevenueBase Database · checked Sep 16, 2026
7Strong evidenceMorristown, TN, United StatesHQ checked Sep 16, 2026201-500249 contacts →

Strong evidence

“Colortech is a North American based manufacturer of color and additive concentrates for the plastics industry.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceNorwalk, CT, United StatesHQ checked Sep 16, 2026201-500214 contacts →

Indirect evidence

“At King Industries, Inc, we bring performance to countless products that shape our daily lives-whether it's the car you drive, the electronics you rely on, or the coatings that…”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidencePowell, OH, United StatesHQ checked Sep 16, 202651-200195 contacts →

Indirect evidence

“We don’t just make chemicals.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceJersey City, NJ, United StatesHQ checked Sep 16, 2026201-500185 contacts →

Partial evidence

“Galata Chemicals, LLC is a new specialty chemical company formed with the acquisition of Chemtura's PVC Additives business.”

Source: RevenueBase Database · checked Sep 16, 2026
11Strong evidenceNewark, NJ, United StatesHQ checked Sep 16, 2026201-500183 contacts →

Strong evidence

“Headquartered in Newark, NJ, Shamrock Technologies is a leading global manufacturer and supplier of specialty additives.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceSheboygan, WI, United StatesHQ checked Sep 16, 2026501-1,000172 contacts →

Partial evidence

“SACO AEI Polymers is a Customer-Driven manufacturer providing Premium Value and Innovative Polymer Solutions in North America.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceDover, OH, United StatesHQ checked Sep 16, 2026201-500172 contacts →

Indirect evidence

“Dover Chemical Corporation is a trusted leader in specialty chemicals that power everyday performance-from industrial applications to consumer products.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceVancouver, United StatesHQ checked Sep 16, 2026501-1,000152 contacts →

Indirect evidence

“Specialty chemicals company LANXESS acquired Emerald Kalama Chemical and now has an even stronger Consumer Protection segment with a broad product portfolio and a global scope.”

Source: RevenueBase Database · checked Sep 16, 2026
15Strong evidenceFort Lauderdale, FL, United StatesHQ checked Sep 16, 202651-200133 contacts →

Strong evidence

“Montachem International distributes a complete line of thermoplastic resins and related additives to meet the needs of plastics’ converters worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 16, 20261,001-5,000128 contacts →

Indirect evidence

“LANXESS Corporation is a chemicals company based out of RIDC Park West Road, Pittsburgh, Pennsylvania, United States.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidencePasadena, TX, United StatesHQ checked Sep 16, 2026201-500128 contacts →

Indirect evidence

“Dixie is a technology-driven specialty chemical company with expertise in the development, manufacturing, and marketing of high performance specialty chemicals.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceChardon, OH, United StatesHQ checked Sep 16, 2026501-1,000121 contacts →

Indirect evidence

“Rhein Chemie Group Headquarters: Mannheim, Germany US Headquarters: Chardon, Ohio, USA CEO & President: Dr.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceStow, OH, United StatesHQ checked Sep 16, 202651-20070 contacts →

Indirect evidence

“Struktol Company of America, LLC is a member of the Schill+Seilacher group, with representation in over 100 countries around the world.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceLeominster, MA, United StatesHQ checked Sep 16, 202651-20067 contacts →

Indirect evidence

“Modern Dispersions, Incorporated (MDI) is a thermoplastics compounder and concentrate maker.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceButler, IN, United StatesHQ checked Sep 16, 202651-20059 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceGeorgetown, SC, United StatesHQ checked Sep 16, 2026201-50054 contacts →

Partial evidence

“3V Sigma USA is a global specialty chemical manufacturer and the commercial and technical hub of the unified 3V Global Network.”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceNorwalk, CT, United StatesHQ checked Sep 16, 2026201-50048 contacts →

Indirect evidence

“R.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceMaple Heights, OH, United StatesHQ checked Sep 16, 202611-5047 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceEmeryville, CA, United StatesHQ checked Sep 16, 202651-20046 contacts →

Partial evidence

“Dura Chemical Corporation was founded in India in 1948 as a supplier of raw materials for the coatings, plastics, rubber, and cosmetics industries.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 134 additives for plastics manufacturers based in the United States

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Additives for plastics manufacturers based in the United States at a glance

As of Sep 16, 2026
32.6%Verified-email coverage
69.4Average contacts per company
11-50Median size (employees)
6.0%Largest-city concentration · Houston
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
44
51-200
25
201-500
12
501-1,000
7
1,001-5,000
7
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 134 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among additives for plastics manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “additives for plastics manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names additives for plastics manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among additives for plastics manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 3,032 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names additives for plastics manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many additives for plastics manufacturers are there based in the United States?

RevenueBase identified 134 additives for plastics manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SI Group, headquartered in The Woodlands, tops this list with the largest team on record.

Which city has the most additives for plastics manufacturers?

Houston leads with 8 headquartered companies, followed by Akron (2) and Belton (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,032 verified decision-maker contacts tracked across these 134 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.