PVC Reactor Additives
Antifouling and secondary suspending agents
DO SENDER CHEM is a global supplier of antifouling agents and secondary suspending agents to the PVC industry, providing essential solutions that enhance reactor efficiency and product quality.
Vinyl chloride monomer (VCM) is polymerized into PVC through suspension polymerization. During this process, reactor fouling and polymer buildup on internal walls can significantly reduce heat transfer efficiency and lead to product quality issues. Our antifouling agents — including the Noxol® and Everplus® product lines — are the industry-standard solution for preventing these issues, reducing costly downtime for reactor cleaning and extending production cycles.
We also offer a comprehensive range of secondary suspending agents that play a critical role in controlling PVC resin porosity, improving particle morphology, and enhancing drying and stripping performance. Our product portfolio includes water-based emulsions (DCloud® and Ethapol®) and solvent-based solutions (Active®) to meet diverse process requirements.
All products are manufactured under strict quality control standards and are supported by comprehensive technical documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and Technical Data Sheets (TDS).
Product categories
Antifouling Agent — Noxol® Product
Noxol® is the worldwide standard in antifouling. Our range of copolymer solutions prevents reactor fouling and polymer buildup in suspension PVC processes.
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Water-based Secondary Suspending Agent — DCloud® and Ethapol®
DCloud® and Ethapol® emulsions replace solvent-based secondary suspending agents, offering improved environmental and safety profiles.
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Solvent-based Secondary Suspending Agent — Active®
Active® is a classic solvent-based secondary suspending agent, providing reliable performance for PVC porosity control and particle morphology.
Explore →Polyvinyl acetate partially hydrolysed, solution in ethanol and ethyl acetate
Active® 45
Active® 45 is a partially hydrolysed polyvinyl acetate, solution in ethanol and ethyl acetate. It serves as a secondary suspending agent in PVC polymerization processes.
Polyvinyl acetate partially hydrolysed, solution in water and ethanol
Active® 55
Active® 55 is a partially hydrolysed polyvinyl acetate, solution in water and ethanol. A versatile secondary suspending agent for PVC production.
Formaldehyde copolymer with 1-naphthol, solution in water
AFA-C
AFA-C is an antifouling agent particularly suited for protection of internal walls of reactors used for suspension polymerization of PVC.
Polyvinyl acetate partially hydrolysed, emulsion in water
DCloud® 35
DCloud® 35 is a secondary suspending agent particularly suited to the suspension polymerization of PVC. A water-based emulsion offering improved environmental profile.
Polyvinyl acetate partially hydrolysed, emulsion in water
DCloud® 45
DCloud® 45 is a secondary suspending agent particularly suited to the suspension polymerization of PVC. Water-based emulsion formulation for enhanced sustainability.
Polyvinyl acetate partially hydrolysed, solution in ethanol and ethyl acetate
Ethapol® 45 LV
Ethapol® 45 LV is a polyvinyl acetate partially hydrolysed, solution in ethanol and ethyl acetate. A solvent-based suspending agent for specialized PVC applications.
Partially hydrolysed polyvinyl acetate, solution in water and ethanol
Ethapol® 55
Ethapol® 55 is a partially hydrolysed polyvinyl acetate, solution in water and ethanol. A widely used secondary suspending agent with global availability.
Polyvinyl acetate partially hydrolysed, emulsion in water
Ethapol® MPG
Ethapol® MPG is a polyvinyl acetate partially hydrolysed, emulsion in water. A water-based secondary suspending agent with excellent performance characteristics.
Copolymer of 1-naphtol and formaldehyde, solution in water
Everplus®
Everplus® is a copolymer of 1-naphtol and formaldehyde, solution in water. An effective antifouling agent for PVC reactor protection.
Copolymer of 1-naphtol and formaldehyde, solution in water
ITAFA-Great
ITAFA-Great is an antifouling agent particularly suited for protection of internal walls of reactors used for suspension polymerization of PVC.
Copolymer of 1-naphtol and formaldehyde, solution in water and ethanol
Noxol® ETH
Noxol® ETH is a copolymer of 1-naphtol and formaldehyde, solution in water and ethanol. An antifouling agent providing effective reactor protection.
Copolymer of 1-naphtol and formaldehyde, solution in water
Noxol® ETH/S3
Noxol® ETH/S3 is a copolymer of 1-naphtol and formaldehyde, solution in water. A proven antifouling agent for suspension PVC reactor protection.
Copolymer of 1-naphtol and formaldehyde, solution in water
Noxol® WSW
Noxol® WSW is an antifouling agent particularly suited for protection of internal walls of reactors used for suspension polymerization of PVC.
Copolymer of 1-naphtol and formaldehyde, solution in water
Noxol® WSW/D2
Noxol® WSW/D2 is a copolymer of 1-naphtol and formaldehyde, solution in water. Designed for effective antifouling protection in PVC suspension polymerization.
Copolymer of 1-naphtol and formaldehyde, solution in water
Noxol® WSW/D7
Noxol® WSW/D7 is an antifouling agent particularly suited for protection of internal walls of reactors used for suspension polymerization of PVC. One of the most widely specified antifouling products globally.
Related content
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Brochure — Essential Ingredients for PVC Production
All information about essential ingredients for PVC production including antifouling agents (Noxol®, Everplus®) and secondary suspending agents (DCloud®, Ethapol®, Active®).
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Noxol®, Everplus®, DCloud®, Ethapol®, Active®, and Itafa™ are registered trademarks of their respective owners. DO SENDER CHEM supplies these products as part of its comprehensive PVC reactor additives portfolio.