Patent · US Active

Refrigerant

US7862739B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Inventors

Nicholas Cox · Lavina, US
Victor Mazur · Odesa, UA
Daniel Colbourne · Ware, GB
Andrew Stevenson · Hemel Hempstead, GB

Key dates

Filing date	May 21, 2007
Grant date	Jan 4, 2011
Priority date	—
Expiry date	May 21, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2205/32
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

This invention relates to a refrigerant that is azeotropic or near-azeotropic and comprises a binary blend of R1270 and R161, R170 and R717, or R744 and R41. In a first embodiment, the binary blend has a molar composition of 50 to 80 percent R1270, the remainder being R161. In a second embodiment, the binary blend has a molar composition of 30 to 60 percent R717, the remainder being R170. In a third embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R161.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.