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Featured researches published by Donald A. Seanor.


Polymer | 1978

Metal catalysed oxidative coupling of mercaptan-containing poly(dimethyl siloxanes)

Donald A. Seanor; Joseph A. Swift

Abstract The oxidative coupling of mercaptan-containing poly(dimethyl siloxane) polymers: catalysed by different metals has been studied. In the presence of excess oxygen, the kinetics obey the law, d(SH) d t = −k( SH ) n , where n = 0 or 2 dependent upon temperature and the specific metal. The rate constant, k, is independent of x and y in the range studied but is a function of the metal. An activation energy of 18.4 ± 0.6 kcal/mol was found. It is postulated that the following sequence of reactions occurs: Depending upon the metal and temperature, desorption (step 3) or reaction (step 2) may be the ratelimiting step. Steps (3) and (4) may occur simultaneously. Metals for which no oxidation/reduction couple exists show little catalytic effect even though a strongly bonded interfacial layer is formed. The interfacial layer which formed rapidly was studied via reflection spectroscopy and protective ability. It is strongly bonded, of low critical surface energy and consists primarily of: However, it is enriched in sulphur over the bulk polymer.


Archive | 1979

Metal-filled elastomer fuser member

Donald A. Seanor


Archive | 1974

Biasable member and method for making

Donald A. Seanor; James A. Lentz; Clifford O. Eddy; Stephen Strella


Archive | 1978

Polymeric release agents for electroscopic thermoplastic toners

Stephen Strella; Donald A. Seanor; George R. Imperial; Thomas R. Hoffend


Archive | 1974

Mercapto functional polyorganosiloxane release agents for fusers in electrostatic copiers

George R. Imperial; Donald A. Seanor


Archive | 1974

Method of fusing toner images using functionalized polymeric release agents

Stephen Strella; Donald A. Seanor; George R. Imperial; Thomas R. Hoffend


Archive | 1991

Silane adhesive system for fuser member

George J. Bingham; Patrick J. Finn; George J. Heeks; Arnold W. Henry; Donald A. Seanor


Archive | 1994

Fusing system with monoamino functional silicone release agent

Arnold W. Henry; Donald A. Seanor; George J. Heeks; Clifford O. Eddy; Che C. Chow; Santokh S. Badesha; Samuel Kaplan; David H. Pan


Archive | 1980

A member for, a method of, and a system for fusing toner images to a substrate

Paul D. Depalma; James A. Lentz; Rabin Moser; Donald A. Seanor


Archive | 1978

Corona charging element

Donald A. Seanor; Judy P. Nagel

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