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US 4,328,136 AGranted
Process for the production of cellulose-silicate products
OwnerDavid H. Blountinventor
Life of this patent
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Abstract
A process for impregnating and reacting cellulose particles with oxidated silicon acid to produce lignin-cellulose-silicate and/or cellulose-silicate products impregnated with hydrated silica.
Claims20
The process for the production of lignin-cellulose silicate products containing impregnated hydrated silica and binder by mixing and reacting the following components:
- (a) 1 to 100 parts by weight of an oxidated silicate compound, selected from the group of oxidized alkaline earth metal silicate, oxidized mono alkali metal silicic acid, oxidized mono alkaline earth metal silicic acid, oxidized silicic acid and mixtures thereof;
- (b) 50 parts by weight of plant cellulose particles, selected from the group consisting of cotton, wood cellulose, regenerated cellulose, sulfate cellulose produced by the Kraft process, sulfite cellulose, mechanical pulp cellulose, vegetable cellulose, cellulose esters and semichemical cellulose;
- (c) a salt-forming compound selected from the group consisting of hydrochloric and sulfuric acid and in an amount wherein the mixture of components (a), (b) and (c) has a pH of 1.5 to 5 after the reaction is complete;
- (d) then binder is added to the lignin-cellulose-silicate product impregnated with hydrated silica.
1 more element
Dependencies are inferred from the claim text.