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US 4,071,666 AGranted
Electroconductive resins and intermediates and electroconductive coated paper
AssigneeThe Dow Chemical Company
InventorJoseph L. Garner
Life of this patent
Estimating the term…
Abstract
This invention relates a relatively low molecular weight polystyrene having a narrow molecular weight distribution range in combination with a 1 to 3-aromatic hydrocarbon ring compound, chloromethylated derivatives thereof, quaternary amine derivatives of said chloromethylated derivatives and the use of such amines as electroconductive resins for the preparation of electroconductive coated papers useful for electrographic printing.
Claims12
A composition comprising, by weight:
- Component A. from about 85 to about 95 parts of a polystyrene characterized by a weight average molecular weight, M.sub.w, of about 5,000 to about 45,000 and an average molecular weight distribution, M.sub.w /M.sub.n, of about 2 to about 6;
- and
- Component B. from about 15 to about 5 parts of a cyclic hydrocarbon of from 9 to about 25 carbon atoms which may contain up to two hetero-oxygen atoms, comprising 1 to 3 benzoaromatic rings;
- which composition has been chloromethylated or bromomethylated to introduce chloromethyl or bromomethyl groups on about 70 to 90 percent of the aromatic rings thereof.
1 more element
Dependencies are inferred from the claim text.