| abstract |
The invention discloses a nonflammable refrigerant mixture. The non-flammable refrigerant mixture may comprise: 20% to 25.5% by weight HFO-1234yf, (b) 20% to 24.5% by weight HFC-32, (c) 24.5% to 30% by weight HFC-125, (d) 25.5% to 30% by weight HFC-134a, and optionally (e) about 0.0001% to 10% by weight trans-HFO-1234ze. These refrigerant mixtures can be used as components in compositions that also contain non-refrigerant components such as lubricants, can be used in refrigeration processes, can be used to replace refrigerants R‑404A, R‑507, R‑407A, R ‑407C, R‑407F and/or R‑22 and can be used in refrigeration equipment. |