Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1983-01-03
1989-04-04
Mills, Catherine L.
Chemistry: fertilizers
Processes and products
Forms or conditioning
A01N 4728, A01N 5902
Patent
active
048182699
ABSTRACT:
Cellulosic materials are physically and/or chemically modified by contact with a combination of urea and sulfuric acid in which at least 25 percent of the sulfuric acid is present as the monourea adduct of sulfuric acid. The cellulosic materials thus treated posses uniquely modified physical and chemical properties. The methods of the invention can be employed to weaken the physical structure of the cellulosic material and thereby to assist in clearing land of vegetation and vegetation residue and in compacting and other processing of waste cellulosic materials. The methods of the invention can also be employed to increase the food value of cellulosic materials for animals, including humans, and, in particular, to increase the food value of such materials for ruminant mammals. Novel cellulosic compositions suitable for use in the methods of this invention and novel compositions containing cellulosic materials which have been physically weakened, modified and/or which have improved food value, are also provided.
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Laird Michael H.
Mills Catherine L.
Union Oil Company of California
Wirzbicki G.
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