Date on Master's Thesis/Doctoral Dissertation

2-1945

Document Type

Master's Thesis

Degree Name

M. Eng.

Department

Chemical Engineering

Committee Chair

Ernst, Robert Craig

Committee Co-Chair (if applicable)

Williams, Gordon C.

Committee Member

Barnes, W. R.

Subject

Varnish and varnishing

Abstract

Ethylcellulose was refluxed with Stearic, Oleic, Linseed Fatty acids, and a neutral Mineral Oil in the presence of a solvent. The products recovered were analyzed to determine if any possible reaction had taken place. Conditions for the reaction were carried out so that the temperatures obtained could be in the near range of varnish cooking, that is between 375 and 500°C. The I solvents used were diethylbenzene, boiling point 180oC and tetralin, boiling point 208oC. In each case approximate stoichiometric proportions of the fatty acids and ethylcellulose were used. These were refluxed to a sensible minimum viscosity of solution. The analysis of the product showed that reaction took place at the hydroxyl groups, the ethoxy groups and also at the oxygen bridge. There was also acid formed due to the breakdown of the ethyloellulose molecule. The amount of acid reacted at the various groups in the ethylcellulose molecule, as mentioned above, and the amount of acid product of decomposition, seem to depend on the type of acid used and its reactive power.

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