Supercooled fluids and methods of producing such supercooled fluids
US4361491A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to a method of producing articles which generate heat at a substantially constant temperature for an extended period of time and which are able to remain in a stable state until such time as the generation of heat is desired. The method also relates to supercooled fluids produced by such methods. The method involves the processing of supercooled fluids such as hypo to produce this stable state. As a first step, a suitable material such as ethylene glycol may be added to the supercooled fluid to stabilize the supercooled fluid and to decrease the generation of heat in the supercooled fluid to obtain a desired temperature. The mixture is then heated to a relatively high temperature considerably above the melting temperature of the supercooled fluid. With the mixture at the high temperature, water is added to provide a particular specific gravity and an alkali is added to provide a particular pH. The mixture may then be poured into rupturable pouches while being maintained at the high temperature. The mixture in the pouches is then allowed to cool slowly to ambient temperatures and is placed in a separate container with a triggering material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.