TMG-234 (Dibutyltin maleate) is a one of the organotin catalysts in our product portfolio. TMG-234 has been widely utilized as a PVC heat stabilizer and also an excellent catalyst in esterification and transesterification reaction.

TMG-234 is recently employed as an initiator in the production of poly-e- Caprolactone (PCL) in ring opening polymerization of e- Caprolactone.

Poly-e-Caprolactone:
Poly-ε-caprolactone (PCL) is one of the most important industrial polyesters that finds versatility of applications in Cast & TPU Elastomers, adhesives, coatings, resin intermediates, medicine, pharmacy, electronics, and packaging.

The physical, thermal and mechanical properties of PCL depend on its molecular weight and its degree of crystallinity.

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MG 129 is a one of the inorganic tin catalysts in our product portfolio. It is a pale- yellow liquid. TMG 129 can be added to the reactants either as it  is  or  blended  with alcohols.

1. TMG 129 is a liquid catalyst, it can be handled easily in reactors.
2. The dosage of TMG 129 generally used for PU foam systems are between 0.06-0.2%
3. It is easy to remove TMG 129 by chemical treatment or adsorption with TMG TINEX-products,once a reaction hasbeen completed successfully.
4. It is especially used in the products at higher reaction temperatures (>160°C)

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Silicones
Silicones are a general category of synthetic polymers whose basic structure is made up of polyorganosiloxanes, where silicon atoms are linked to oxygen to create the siloxane bond. The remaining valences of silicon are linked to organic groups, mainly methyl groups.

Silicones are the most stable polymer offer superior reliability, excellent service life and reduced production costs. In addition, silicones significantly resist acids, bases, solvents, chemicals, oils,and water.

• Polyurethane catalyst
• RTV-Silicone curing catalyst
• Esterification catalyst
• PVC-Heat stabilizer
• Paint drier

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At TMG-Chemicals, we offer various Tin maleate products that stabilize the heat during the PVC
polymerization reactions and improve the final products' properties and performance according to their
intended use. These Tin maleate stabilizers are sulfur-free and highly recommended for PVC products that
require excellent transparency, thermal stability, and weatherability.

Polyvinyl chloride (PVC) is the third most common synthesized plastic polymer after polypropylene and
polyethylene. PVC has gained widespread popularity due to its exceptional versatility, durability and costeffectiveness.
This thermoplastic material can be rigid or flexible, making it suitable for various applications
across different industries. PVC is known for its excellent chemical resistance, electrical insulation and flameretardant
properties, making it a preferred choice in manufacturing products such as pipes, cables, window
profiles, medical tubing, automotive parts and more.
A tin stabilizer is made of an organotin mercaptide or carboxylate compound, commonly used for PVC heat
stabilization. They offer enhanced transparency, thermal stability, color retention, and workability. It has
several single and di alkyl salts combined in different ratios. The stabilizers essentially offer protection against
heat damage during PVC processing.
Tin maleates are sulfur-free organotin carboxylates that provide excellent light stability to finished goods
intended for outdoor applications. However, they are less efficient as heat stabilizers than the sulfurcontaining
organotin mercaptides.
TMG-Chemicals offers a selection of eight distinct butyl and octyl tin maleate heat stabilizers, which are
extensively employed in PVC resin production. These heat stabilizers exhibit notable potential and are tailored
to specific applications, each with its anticipated performance. To facilitate the decision-making process, the
intended use and expected performance of each tin maleate heat stabilizer are presented in the table below.

KEYNOTES
Tin maleate heat stabilizers
* Tin maleates offer several features: Improved transparency, Thermal stability, and Color retention.
* TMG-234 is recommended for PVC/ABS, excellent light stability, and odorless application.
* TMG-314 LC, 317 LC, 318 LC, and 326 are recommended for food grade films and blister packaging.
* TMG-326 is effective as a heat stabilizer in plastics and thus enables longer product life cycles.
*No sulfur contents; no more smell issues during the production process in the plants.

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Bismuth has emerged as an exceptional catalyst that exhibits Lewis acid properties, simultaneously possessing lower toxicity levels than other metal salts. Bismuth carboxylates serve as an excellent alternative for numerous toxic metal catalysts used in polyurethane systems, thereby enhancing the safety and environmental sustainability of the process.

At TMG-Chemicals, we offer organo-bismuth catalysts that accelerate urethane reactions and improve the final products' properties and performance according to their intended use. These catalysts are non-toxic and highly recommended for PU products that require frequent human interaction.

Organo-bismuth catalysts
*TMG-720 is recommended for 2K PU and block isocyanate coatings.
*TMG-716, 722, 724, and 728 are recommended for PU applications including coating, adhesive, sealant, and elastomer.
*TMG-719 is recommended for PU electrophoretic paint coatings.
*TMG-716 is specifically recommended for PU flooring and PU casting systems.
No sulfur contents and no more smell issues

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TMG Chemicals can provide customers the most complete catalysts for the production of saturated polyester resins,including the most widely used efficient monobutyltin and dibutyltin catalysts,we also provide customers efficient eco-friendly catalysts which are not contain organo-tin and meet the requirements of increasingly stringent environmental
regulations（such as ITTC）,as well as efficient and low-cost
liquid catalyst which can replace monobutyltin oxide
（MBTO）.

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Environmental protection is the development trend of the polyurethane industry today. Due to the adverse effects of compounds such as lead, mercury, and tin on human health and the environment, which has been strictly restricted in polyurethane industry. Polyurethane eco-friendly catalysts mainly include organic bismuth, organic zinc, and zinc bismuth mixed catalysts, which can be widely used in the production of polyurethane coatings, resins, slurries, adhesives, sealants, elastomers, and other PU industries. They are an excellent choice to replace toxic lead mercury tin catalysts.

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Any object has its electrostatic charges,the charge can be negative or positive. The accumulation of electrostatic charges will affact or even harm to our life and industrial production.The chemicals which can guide or eliminate accumulated electrostatic charges ,make them not harm or inconvenience to life and industrial production called antistatic agent.TMG anti-static agent series can be widely used in industries such as coatings, rubber, various engineering plastics, elastomers, PU foamand EVA shoe soles

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Electroplating refers to a surface processing method, in which a cathode part having the surface of a base material to be plated and the salt solution containing the corresponding metal cation, when the voltage is applied in the electric circuit, it deposits the metal cation on a surface of the base material through electrolysis. Electroless plating, also known as chemical plating or autocatalytic plating, is a plating method in which metal ions in a plating solution are reduced to metal and deposited on the surface of a part without an applied current by employing a suitable reducing agent. TMG Chemicals can provide customers with a variety of metal salts and additives, widely used in tin plating, copper plating and other industries.

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Catalysts for Electrophoretic Paint

Electrophoretic paint, also known as electrophoretic coating, is a technology that uses electrophoresis to deposit coating particles on the surface of the coated material. Electrophoretic paint is gradually replacing traditional paint spraying due to its excellent quality and highly environmentally friendly characteristics. Electrophoretic paint is mainly divided into cathodic electrophoretic paint and anodic electrophoretic paint.Electrophoretic paint is mainly composed of resin, crosslinking agent, solvent, auxiliary agent, pigment filler, and catalyst. Electrophoretic paint catalysts mainly include tin, lead, and bismuth compounds, which can reduce the baking temperature and promote the curing of the paint film..

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Catalysts for RTV

Room temperature vulcanized silicone rubber（RTV）is a new type of silicone elastomer which came out in the 1960s. Its most prominent feature is that it can be cured in place at room temperature without heating and pressure and it is extremely convenient to use. RTV can be divided into three types according to its composition, curing mechanism and application process:1K RTV silicone rubber, 2K condensation-type RTV silicone rubber and 2K addition-type RTV silicone rubber. The largest consumer area of RTV silicone rubber is the construction industry, and the other major application area is the automotive industry. In addition, in electronic power, renewable energy and other manufacturing, RTV silicone rubber is widely used in packaging, adhesive and other fields.

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