NEW PERFLUOROETHER FLUIDS EXHIBITING EXCELLENT OXIDATIVE AND THERMAL STABILITIES

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$449,367.00
Award Year:
1986
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
1674
Agency Tracking Number:
1674
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Po Box 7807, Austin, TX, 78713
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Thomas R. Bierschenk
Investigator
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
GENERAL PROCEDURES FOR PREPARING LOW MOLECULAR WEIGHT PERFLUOROALKYL ETHERS HAVE BEEN DEVELOPED. THE FLUORINATED PRODUCTS, SERVING AS MODEL COMPOUNDS FOR HIGHER MOLECULAR WEIGHT POLYMERS, WILL BE USED TO DETERMINE STABILITY PARAMETERS FOR HIGHER MOLECULAR WEIGHT POLYMERS. SIMPLE MOLECULES, TYPICALLY DIMETHYLETHER DERIVATIVES FOR THE BASIC REPEATING UNIT OF THE POLYMER OF INTEREST, WILL BE SYNTHESIZED USING A VARIETY OF TECHNIQUES. ONE PROCEDURE CONSISTS OF FIRST SYNTHESIZING THE HYDROCARBON ANALOGUE OF THE DESIRED PERFLUORO COMPOUND, FOLLOWED BY REPLACEMENT OF THE HYDROGEN WITH FLUORINE USING A CONTROLLED REACTION WITH ELEMENTAL FLUORINE. THIS PROCEDURE ALLOWS ONE TO PREPARE FLUOROCARBON DERIVATIVES OF ESSENTIALLY ANY HYDROCARBON POLYMER OR MOLECULE. A SECOND BUT VERY IMPORTANT GENERAL PROCEDURE INVOLVES FLUORINATION OF ESTERS, FOLLOWED BY CONVERSION OF THE LINEAR PERFLUOROESTER TO A PERFLUOROETHER USING SF4. THIS TECHNOLOGY IS ESPECIALLY WELL SUITED FOR PREPARING HIGHLY BRANCHED PERFLUOROETHERS AND PERFLUOROPOLYETHERS AS WELL AS ETHERS CONTAINING MORE THAN TWO SEQUENTIAL CARBONS IN THE CENTRAL CHAIN OF THE ETHER/POLYETHER. THERMAL STABILITY STUDIES PERFORMED ON THE MODEL COMPOUNDS SHOULD DETERMINE THE USEFUL TEMPERATURE RANGE FOR THE POLYMERS AS WELL AS PROVIDE MECHANISTIC INFORMATION CONCERNING THE WAY THE VARIOUS POLYMERS OF INTEREST MAY DECOMPOSE.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government