Heat transfer compositions
US9187683B2 · kind B2 · utility
9Cited by
1References
54Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85978
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a heat transfer composition consisting essentially of from about 62 to about 78% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 22 to about 38% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 20 to about 40% by weight R-152a, from about 5 to about 55% R-134a, and from about 5 to about 75% by weight R-1234ze(E).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.