Monsanto Company (Resinox Division)

Manufacturer: Monsanto Company, Resinox Division Headquarters: St. Louis, Missouri Founded: 1901 Ceased Asbestos Use: Approximately 1975 Product Category: Phenolic and Thermoset Molding Compounds

Monsanto Company’s Resinox Division was a significant supplier of phenolic and thermoset molding compounds to American industrial manufacturers throughout the mid-twentieth century. According to asbestos litigation records, certain grades of Resinox molding compounds contained chrysotile asbestos as a reinforcing filler during the period spanning approximately the 1940s through 1975. Workers in electrical manufacturing plants, molding shops, and related industrial settings may have encountered these materials during production, fabrication, or finishing operations. This reference article is intended to assist workers, their families, and legal professionals in documenting potential occupational asbestos exposure connected to Resinox Division products.

Company History

Monsanto Company was incorporated in 1901 in St. Louis, Missouri, initially as a chemical manufacturer. Over the following decades, the company diversified broadly across industrial chemistry, agricultural chemicals, and specialty materials. The Resinox Division represented one of Monsanto’s industrial materials branches, focused on the development and commercial production of synthetic resins, including phenolic molding compounds derived from phenol-formaldehyde chemistry — a technology that had been commercialized in the United States following the early development of Bakelite-type materials in the early twentieth century.

By the 1940s, phenolic molding compounds had become indispensable to American industrial manufacturing, particularly in the electrical equipment and appliance sectors. Phenolics offered heat resistance, dimensional stability, and electrical insulating properties that thermoplastics of the era could not match. Monsanto’s Resinox Division supplied these compounds under the Resinox brand name to a range of industrial customers, including major electrical equipment manufacturers. Court filings document that Westinghouse Electric was among the industrial customers that received Resinox phenolic compound grades during portions of the mid-twentieth century production period.

Monsanto ceased incorporating asbestos into its Resinox molding compounds by approximately 1975, a timeline consistent with broader industry reformulation efforts that followed increasing regulatory scrutiny of asbestos in industrial materials during the early to mid-1970s. The company continued operations in other chemical sectors well beyond this period, ultimately undergoing significant corporate restructuring in the 1990s and 2000s that separated its agricultural and chemical businesses.

Asbestos-Containing Products

According to asbestos litigation records, the following Resinox Division product lines are alleged to have contained chrysotile asbestos as a functional filler or reinforcing agent during the identified periods:

Resinox Phenolic Molding Compounds (Asbestos-Filled Grades)

Plaintiffs alleged that Monsanto’s Resinox Division manufactured asbestos-filled phenolic molding compound grades from at least the 1940s through approximately 1975. In phenolic thermoset chemistry, asbestos served as a reinforcing filler that enhanced the heat deflection temperature, mechanical strength, and dimensional stability of finished molded parts. Court filings document that asbestos-filled phenolic compounds of this general type were widely used in the production of electrical components, industrial housings, and heat-resistant mechanical parts throughout this period.

The specific asbestos content of individual Resinox compound grades varied depending on the intended end-use specification, but chrysotile asbestos fibers functioning as a filler constituent were alleged to be present in certain product grades distributed under the Resinox brand.

Resinox Electrical Grade Phenolic Compounds

According to asbestos litigation records, Monsanto’s Resinox Division produced phenolic compounds specifically formulated for electrical insulation applications. Electrical grade phenolics were required to meet high standards for arc resistance, tracking resistance, and thermal stability — performance characteristics that asbestos fillers were known to enhance during the era in question. Plaintiffs alleged that certain Resinox electrical grade compounds supplied to electrical equipment manufacturers contained chrysotile asbestos fiber as a reinforcing constituent.

These materials would have been processed at customer facilities through compression molding, transfer molding, or related thermoset fabrication methods, during which raw compound was subjected to heat and pressure. Such processing operations are relevant to exposure history assessments.

Monsanto-Lite Asbestos-Filled Thermoset Materials

Court filings document references to a product identified in litigation records as Monsanto-Lite, described as an asbestos-filled thermoset molding material produced within the Resinox product family. Plaintiffs alleged that this material contained chrysotile asbestos and was supplied for use in industrial and electrical manufacturing applications during the period of Resinox Division asbestos-containing product production. The precise range of end-use applications and customer distribution for this specific product designation has been addressed in litigation proceedings.

Occupational Exposure

Workers at facilities that processed, fabricated, or finished Resinox phenolic molding compounds may have sustained asbestos exposure through several recognized pathways. According to asbestos litigation records, the following occupational groups and work processes are relevant to potential Resinox-related exposure histories:

Molding and Press Operators: Workers who loaded phenolic molding compound into compression or transfer molds and operated molding presses were in direct and sustained contact with raw compound materials. Handling of asbestos-filled phenolic compound prior to molding — including weighing, scooping, and placing compound charges — could release respirable asbestos fibers into the breathing zone.

Electrical Equipment Assemblers and Fabricators: Plaintiffs alleged that Resinox compounds were supplied to electrical equipment manufacturers, including Westinghouse Electric. Workers at such facilities who handled, machined, drilled, sanded, or otherwise worked with components molded from asbestos-filled Resinox grades may have disturbed cured phenolic material in ways that released embedded asbestos fibers.

Finishing and Machining Workers: Post-molding operations — including deflashing, grinding, sanding, and drilling of phenolic thermoset parts — are recognized in industrial hygiene literature as capable of releasing asbestos fibers from cured thermoset matrices. Workers performing these operations on Resinox compound parts without respiratory protection would have been at elevated exposure risk.

Maintenance and Tool Room Personnel: Workers responsible for maintaining molding equipment, cleaning press areas, and managing compound storage at manufacturing facilities using Resinox products may also have experienced incidental asbestos exposure through accumulated compound dust and residue.

Secondary and Bystander Exposure: Family members of workers employed at facilities using Resinox phenolic compounds may have sustained secondary exposure through asbestos fibers carried home on work clothing, skin, or hair — a recognized pathway documented across mid-twentieth century industrial settings.

The latency period between asbestos exposure and the manifestation of asbestos-related diseases — including mesothelioma, asbestosis, and asbestos-related lung cancer — typically ranges from 20 to 50 years, meaning that workers exposed to Resinox products during the 1940s through 1975 production period may be receiving diagnoses today.

Trust Fund / Legal Status

Legal Tier: Tier 2 — Litigated Defendant, No Established Asbestos Trust Fund

Monsanto Company’s Resinox Division has been named as a defendant in asbestos personal injury litigation. However, as of the time of this writing, Monsanto has not established a dedicated asbestos bankruptcy trust fund of the type created under Section 524(g) of the U.S. Bankruptcy Code by manufacturers who resolved their asbestos liabilities through restructuring proceedings. Accordingly, there is no Resinox or Monsanto asbestos trust fund through which exposure claims can be submitted administratively.

Court filings document that claims alleging asbestos exposure from Resinox phenolic molding compounds have been litigated in the civil court system. Plaintiffs alleged negligence and product liability theories in connection with the manufacture and distribution of asbestos-containing Resinox products. The outcomes of individual cases vary and no specific settlement amounts or verdicts are represented here.

Individuals who believe they sustained occupational asbestos exposure from Resinox Division products — or family members of deceased workers with documented exposure histories — should be aware that:

• Civil litigation remains the primary legal avenue for pursuing claims against Monsanto related to Resinox asbestos-containing products, as no trust fund mechanism exists.
• Exposure documentation is critical. Employment records, union membership records, Social Security earnings histories, and coworker testimony can all assist in establishing that a claimant worked at a facility where Resinox phenolic compounds were used during the relevant period.
• Other trust fund claims may also be available. Workers exposed to Resinox products in environments where other asbestos-containing products were also present — insulation, gaskets, friction materials, or other compounds — may be eligible to file claims against the asbestos trust funds of other manufacturers whose products were present at the same job sites.
• Statutes of limitations apply and vary by state. Claims are generally measured from the date of diagnosis of an asbestos-related disease, not the date of exposure. Prompt legal consultation is advisable following a diagnosis.

Summary for Workers and Families

If you or a family member worked in electrical equipment manufacturing, industrial molding, or a related trade and handled or worked near Resinox phenolic molding compounds between the 1940s and 1975, asbestos litigation records indicate those materials may have contained chrysotile asbestos. Because Monsanto has not established an asbestos trust fund, pursuing compensation would generally involve consulting with an asbestos attorney experienced in product liability litigation rather than filing a trust fund claim. Gathering employment and medical records early in the process is strongly recommended.