POE（Polyol esters） and refrigerant R1234yf
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Refrigerant Types
Due to environmental and safety concerns, refrigerants have gradually evolved from initially toxic/flammable natural substances to the current fourth generation of refrigerants.
| Generation | Period | Key Characteristics | Representative Refrigerants |
| 1st Gen | 1830-1930 | Easy to produce | CO₂, NH₃, SO₂ |
| 2nd Gen | 1931-1990 | Safe, durable, high efficiency | CFCs, HCFCs |
| 3rd Gen | 1990-2010 | Ozone-friendly | HFCs, CO₂, NH₃ |
| 4th Gen | 2010-present | Zero ODP, GWP <150 | R1234yf, HFOs |
The 3rd generation refrigerants (represented by R134a) have been widely used in car air conditioners (AC) to replace R12. It is still widely used in the automotive industry until 2016, and is still used in some developing countries.
R1234yf is widely used in markets such as the EU and the US, where it is mandatory for new vehicles, replacing R134a.
HFOs is the new generation refrigerant with the greatest potential to replace R134a. HFOs are safe and environmentally friendly, and are a new generation refrigerant with broad prospects. HFOs are incompatible with traditional mineral oils. Currently, the types of refrigeration oils suitable for R1234yf refrigerants include polyolefin glycol oil (PAG), synthetic ester (POE), and polyvinyl ether (PVE).
POE(Polyol esters)
Synthetic ester oil (POE) has good miscibility, reliable lubricity, excellent thermal stability, chemical stability, and material compatibility, and has good safety and environmental performance. It has become the preferred lubricant for hydrofluorocarbons (HFCs) and hydrofluoroolefines (HFOs).
Chours Lubricant Additives offers double-end capped PAG and POE ester base oils for air-conditioning compressors with HFC refrigerants (R-134a), and HFO refrigerants(R-1234yf). Get in touch for the price and related technical documents.
