Celebrating National Chemistry Week: Capped PAGs – The Future of Refrigeration and Lubricant Technology

At Shrieve , we believe that chemistry drives innovation, and during National Chemistry Week, we are proud to spotlight one of the most significant advancements in lubricant technology—Capped Polyalkylene Glycols (PAGs).?

What are Capped PAGs?

Capped PAGs are a new generation of high-performance lubricants designed to meet the growing demands of modern HVACR and automotive systems. These lubricants are built on the flexibility and versatility of traditional PAGs but go further by offering enhanced stability, compatibility, and efficiency in systems using next-generation refrigerants like?R1234yf,?CO2, and?R-32.?

Dr Liz Dixon , Shrieve’s Technical Director EMEA, shares insights into this cutting-edge technology:

"Polyalkylene Glycols polymers have always offered the broadest range of structural flexibility of any category of lubricant base fluid, due to the huge variation in structure that can be incorporated into their polymer chains. This has historically enabled the successful use of PAGs in a wide range of industrial and automotive applications. The introduction of ‘double end-capped’ PAG types as OEM-approved lubricants for R134a-based automotive air-conditioning compressors initiated a new generation of ‘double end-capped’ PAG technology."

At Shrieve, our work with double end-capped PAGs continues to lead the way in innovation. We’ve developed a wide range of products specifically optimized for use in next-generation air-conditioning systems and stationary HVACR systems. These lubricants are not just for today—they are designed to meet future challenges head-on.

Dr. Dixon adds:

"Our ongoing development allows us to incorporate specific new product attributes into the polymer chain, such as PAGs fully miscible with non-synthetic base fluids like paraffinic and naphthenic mineral oils. Another advancement is PAGs with acid-scavenging capabilities built into the polymer chain, helping reduce the industry’s reliance on additive technology."

As we celebrate National Chemistry Week, we’re excited to continue shaping the future of the HVACR and automotive industries through innovation in lubricant technology. We look forward to driving further progress with our customers, partners, and the broader industry.

Find out more about the chemistry we create: https://shrieve.com

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