Bismuth

Reaxis provides a broad selection of bismuth-based catalysts for polyurethanes and related applications. We offer an array of Bismuth Neodecanoates, Bismuth Octoates, and unique Bismuth chemical blends with other elements like Zinc. Our offerings are tailored to meet a diverse range of formulation challenges in end-use applications including coatings, adhesives, sealants, polyurethane foams and plastics.

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Product List

Reaxis C3208 Bismuth Neodecanoate Request A Sample
Reaxis C3209 Bismuth Neodecanoate (Low Viscosity) Request A Sample
Reaxis C3210 Bismuth Octoate (Catalyst Grade) Request A Sample
Reaxis C708 Zinc/Bismuth Neodecanoate Blend Request A Sample
Reaxis C716 Bismuth Neodecanoate Request A Sample
Reaxis C716LV Bismuth Neodecanoate (Low Viscosity) Request A Sample
Reaxis C717 Zinc/Bismuth Octoate Blend Request A Sample
Reaxis C719 Bismuth Methanesulfonate Solution Request A Sample
Reaxis C739P50 Proprietary Water Soluble Bismuth Complex Request A Sample
Reaxis C739W50 Water Soluble Bismuth Complex Request A Sample

Bismuth: A Viable Alternative to Organotins in Catalyzing Polyurethanes

When searching out alternatives to organotin catalysts for polyurethanes, bismuth -based catalysts have been shown to give similar reactivity while having a better toxicity profile.[1] For example, bismuth catalysts, such as Bismuth Neodecanoates and Bismuth Octoates, are known for their low toxicity and efficacy, enabling the production of safer and environmentally-friendly products[2]. Furthermore, bismuth chemicals  accelerate curing reactions, such as those involved in the manufacturing of foams, elastomers, coatings, adhesives, and sealants, making bismuth chemicals a great starting point in product formulation for these industries.[3]

Bismuth Neodecanoate & Bismuth Octoate

Bismuth Neodecanoate and Bismuth Octoate are common bismuth catalysts for polyurethane applications, including foams, elastomers, coatings, adhesives, and sealants.

Bismuth Neodecanoate, offered as a standard blend in REAXIS® C3208 as well as low viscosity blends REAXIS® C3209 and REAXIS® C716LV,  and Bismuth Octoate, also known as REAXIS® C3210, are commonly used for their performance in the formulation of rigid polyurethane foams, elastomers, coatings and adhesives and sealants. Bismuth Neodecanoate and Octoate accelerate the gelling reactions, contributing to the end product’s hardness, density, and overall structure. For example, in foams, their high reactivity facilitates the formulation of foams with exceptional insulation properties and low-temperature resilience, making bismuth catalysts an optimal choice for the automotive and building industries. Reaxis also offers various blends with zinc, including  REAXIS® C708 and REAXIS® C717.

Other Bismuth Catalysts

In addition to the various blends of Bismuth Octoate and Bismuth Neodecanoate, Reaxis offers unique blends of water-soluble bismuth solutions for solvent-borne polyurethane-based formulations. These options include REAXIS® C739E50, REAXIS® C739P50, and REAXIS® C739W50, all of which are sold in a blend of 50% active catalyst, the difference between them being what this bismuth catalyst is mixed with, either ethylene glycol, polyethylene glycol, or water as noted by the letter within the product name. All of these bismuth chemical products exhibit high selectivity for NCO/OH reactions, which improves physical property development.

If you’re not sure which of these bismuth chemicals would best suit your needs, please contact us

References:

  1. Sigma-Aldrich, “Bismuth neodecanoate 34364-26-6”
    https://www.sigmaaldrich.com/US/en/product/aldrich/544132
  2. Gelest.com, “Bismuth Neodecanoate Safety Data Sheet,”
    https://www.gelest.com/wp-content/uploads/product_msds/CXBI061-msds.pdf
  3. ResearchGate, “Bismuth Catalysts and their performance in Polyurethane applications”
    https://www.researchgate.net/publication/263746144_Bismuth_Catalysts_and_their_performance_in_Polyurethane_Applications