US4313857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broken-down organic lignin-cellulose silicate polymers
Assignee: Individual
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Filing: 1981-04-24
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Granted: 1982-02-02
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Expires: 2001-04-24
Abstract
Abstract Small particles of cellulose-containing plants are mixed with an alkali metal hydroxide and an oxidated silicon compound, then heated to 150° C. to 220° C. while agitating, thereby producing a broken-down lignin-cellulose silicate polymer which is then reacted with a substituted organic compound to produce an organic broken-down lignin-cellulose silicate polymer and may be used as molding powder and as a coating agent.
Inventors
- 👤 David H. Blount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:09
CPC Classifications
C; C08; C08H; C08H6/00; C08B; C08B15/00; C08B15/05; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6484; C08J; C08J9/00; C08J9/02; C08G2101/00; C08J2301/00; C08J2301/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
The process for the production of broken-down organic lignin-cellulose silicate polymer by mixing and reacting the following components: Component (a): Broken-down alkali metal lignin-cellulose silicate polymer; Component (b): A substituted organic compound having a substituent which will split off during the reaction, to said broken-down alkali metal lignin-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.
Claim 2
Dependent Claim
72 words
The process for the production of broken-down organic lignin-cellulose silicate polymer by mixing and reacting the following components: Component (a): Broken-down alkali metal lignin-cellulose silicate polymer; Component (b): A substituted organic compound having a substituent which will split off during the reaction, to said broken-down alkali metal lignin-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.
Claim 3
Dependent Claim
45 words
The process of claim 1 wherein the substituted organic compound contains at least one substituent, selected from the group consisting of acid sulfate, nitrate, sulfate, acid phosphate, bicarbonate, formate, acetate, propionate, laurate, oleate, stearate, oxalate, acid malonate, acid tartrate, acid citrate, halogens, and mixtures thereof.
Claim 4
Dependent Claim
60 words
The process of claim 1 wherein an emulsifying or dispersing agent selected from the group consisting of lignin sulfonates, alkyl aryl sulfonates, aryl alkyl sulfonates, sorbitan monolaurates, alkyl aryl sulfates, methyl cellulose, sulfonated petroleum fractions, polymerized alkyl aryl sulfonates, polymerized aryl alkyl sulfonates, soybean lecithin, silicone surfactants and mixtures thereof in an aqueous solution is added to the unreacted mixture.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein lignin sulfonate in an aqueous solution is added to the unreacted mixture as an emulsifying or dispersing agent.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the substituted organic compound is an alkyl halide.
Claim 7
Dependent Claim
9 words
The product produced by the process of claim 1.
Claim 8
Dependent Claim
65 words
The process of claim 1 wherein the broken-down alkali metal lignin-cellulose silicate polymer is first added to a solvent selected from the group consisting of water, methanol, ethanol, isopropyl alcohol, ethylene glycol, propylene, glycol, glycerol, furfuryl alcohol, polyester polymer with 2 or more hydroxyl groups, sucrose amine polymer with 2 or more hydroxyl groups, polyether polymers with 2 or more hydroxyl groups and mixtures thereof.
Claim 9
Dependent Claim
67 words
The process of claim 1 wherein the broken-down alkali metal lignin-cellulose silicate polymer is first reacted with an aldehyde selected from the group consisting of formaldehyde, acetaldehyde, propionic aldehyde, furfural, crotonaldehyde, acrolein, butyl aldehyde, paraformaldehyde, pentanals, hexanals, heptanals and mixtures thereof in the ratio of 1 to 5 parts by weight of the aldehyde to 2 parts by weight of the broken-down alkali metal lignin-cellulose silicate polymer.
Claim 10
Dependent Claim
9 words
The produce produced by the process of claim 8.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |