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US 4,283,311 AGranted
Process for the production of broken down cellulose copolymers
OwnerDavid H. Blountinventor
Life of this patent
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Abstract
Small particles of cellulose-containing plants are mixed with an alkali metal hydroxide then heated to 150.degree. to 220.degree. C. while agitating thereby producing a broken down cellulose polymer which is then reacted with a polysubstituted organic compound in an aqueous solution to produce a broken down cellulose copolymer.
Claims30
The process for the production of broken down cellulose copolymer by mixing and reacting the following components:
- Component (a) broken down alkali metal cellulose polymer produced by mixing 2 to 5 parts by weight of an alkali metal hydroxide selected from the group consisting of sodium hydroxide, potassium hydroxide and mixtures thereof with 3 parts by weight of a cellulose-containing plant particle then heating the mixture at 150.degree. C. to 220.degree. C. while agitating for 5 to 60 minutes
- Component (b) a substituted organic compound having at least two carbon atoms, each of which is attached to a substituent which will split off during the reaction, to said broken down alkali metal cellulose polymer in the amount wherein the mols of the substituted radicals are about equal to the mols of the alkali radicals in the mixture.
Dependencies are inferred from the claim text.