Marshall Additives Technologies (MAT), a division of The R.J. Marshall Company, is a leading supplier of innovative and cost attractive inorganic flame retardant and smoke suppressant technologies for the plastics and rubber industries.

Backed by a customer focused Applications and R&D team, MAT is focused on developing and offering reactive combinations of inorganic flame retardant and smoke suppressant products with the aim of enhancing performance and/or reducing cost.

In addition, MAT offers the familiar single chemical products: Antimony Trioxide, Ammonium Octamolybdate, Alumina Trihydrate, Magnesium Hydroxide, Huntite / Hydromagnesite, Zinc Borate, Zinc Stannate and Zinc Hydroxy Stannate.

Marshall Additive Technologies


There are three methods for flame retardance:
vapor phase inhibition, solid phase char formation, and quench and cool systems
that work by removing or reducing heat, fuel or oxygen.

solid phase char formation

Vapor Phase Inhibition

This approach works by removing flammable gaseous chemicals from the burning plastic. Chlorine and bromine based chemicals and polymers are used as the active flame retardants with MAT’s FLAME DEFENSE SERIES blends FD335, FD409, and FD440. Or with antimony trioxide using MAT’s FDAO.

Learn More

vapor phase inhibition

Solid Phase Char Formation

MAT has developed a high performance low cost reactive blend to replace Ammonium Octamolybdate in a wide range of PVC applications. This product,  Smoke Defense SD890 is particularly suited to plenum rated PVC formulations. Where a combination of smoke suppression and flame retardance is required in one product, MAT offers a range of Zinc based products.

Learn More

quench & cool systems

Quench & Cool Systems

ATH, Huntite / Hydromagnesite, and Magnesium Hydroxide products are typically selected for halogen free applications and work according to two modes. Release of water and endothermic decomposition. Water release reduces temperature, excludes oxygen and combines with soot particles to reduce smoke. Endothermic decomposition removes heat energy from the combustion process.

Learn More

Flame Retardant Solutions

We research, develop and manufacture a full line of inorganic flame retardant and smoke suppressant solutions to meet the most demanding requirements across the plastics and rubber industry. This is supported by our deep partnerships with suppliers, leading university departments and industry experts. Thus, allowing for a customer centered approach to support existing products and partnering on new applications or solving formulation challenges.

Tech Team Contact Us

Commitment to Quality

We strive to achieve total customer satisfaction by assuring that each product delivered or service provided consistently meets or exceeds our established standards. As part of our dedication to quality we will:

  • Develop and nurture an environment conducive to the highest standards of
    quality, commitment, and continue improvement.
  • Partner with and monitor our vendors and suppliers to obtain the most consistent and
    highest quality materials and service.
  • Use statistical methods to understand and manage the actions of our total organization.
  • Dedicate ourselves to continuous improvement in all activities of our business.
  • Continually strive to develop our employees though training and education.
  • Quality will be achieved though prevention of defects rather than detection.
Contact Us

Current News

New Distributor Announcement

July 1st, 2021 The R.J. Marshall Company is pleased to announce that Ravago Chemicals of North America has been appointed as a recognized Distributor for our CASE Market Product lines. Ravago Chemicals of North America represents market-leading specialty chemical and ingredient producers that allow them to deliver creative technical solutions along with the highest level …

New Flame Defense Series Product Announcement – FDVW1

Marshall Additive Technologies is proud to introduce into the Flame Defense product line – FDVW1. FDVW1 is specifically optimized for the crosslinked low voltage XLPE and EPDM wire & cable market. A segment of products in this application are flame retarded to meet the demanding VW1 flame test requirement. To achieve this performance, it is …

New Flame & Smoke Defense Series Product Announcement – FSD485

Marshall Additive Technologies is proud to introduce into the Flame & Smoke Defense product line – FSD485. FSD485 is an antimony free proprietary inorganic blend flame retardant synergist for use with halogen based flame retardant compounds, where Zinc Stannate is used as the primary synergist. It allows the formulator to reduce the amount of the …