Polyhydric alcohols polyvinyl alcohol

Polyhydric Alcohols. (Polyols). An alcohol with three or more hydroxyl groups, each attached to a different carbon atom. They are w-sol and of sweetish taste, which tends to intensify with increasing hydroxyl content. Examples of polyols of ordn interest are listed below. Polyvinyl alcohol is considered in a separate entry as a polymer although it is defined as a polyhydric alcohol. Polyols, when nitrated, make excellent expls, proplnt binders, plasticizers, etc. Prepn can follow the procedure of Lenth DuPuis (Ref 3) which uses a methanol suspension of either sucrose or dextrose and a special Cu-Al oxide catalyst to yield 60-65% distillable polyols at 240° and 1500psi Refs 1) Beil — refs found under individual compds 2) CA, under Alcohols, Polyhydric for compds of current ordn interest 3) C.W. Lenth R.N. DuPuis, "Polyhydric Alcohol Production by Hydrogenolysis of Sugars in the Presence of Copper-Aluminum Oxide , IEC 37, 152-57 (1945) CA 39, 1391 (1945)... 

Polyvinylalcohol (PVA, Alvyl, Resistoflex, Solvar). A polyhydric alcohol polymer used chiefly as the starting matl for Polyvinyl Nitrate (PVN) (qv), (C2H40)x or... 

The binders used in the production of alkyd paints, namely alkyd resins, are oil-modified or fatty-acid-modified condensation polymers of polybasic acids and polyhydric alcohols. Alkyd resins account for ca. 45 % of the total world production of paint raw materials, excluding plastics latexes and polyvinyl dispersions. 

Rubbers (natural and synthetic) Polyvinyl and cellulose esters Polyhydric alcohol-polybasic acid resins Polysulphide resins (Thiokol A) Polysulphide rubbers Cellophane, polyvinyl alcohol and acetal, and regenerated cellulose 10-0-6 18-0-2 (10-1 3) X 10-1 (10-0-7) X 10-1 (6-3-31) X 10-2 (8-0-0-05) X 10- ... 

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