US4098859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a bonded particulate article by reacting a polyol and a polyaldehyde
Assignee: Krause Milling Co
•
Filing: 1976-11-12
•
Granted: 1978-07-04
•
Expires: 1996-11-12
Abstract
Abstract Disclosed herein is a method of manufacturing a bonded particulate article by admixing particulate material with a binder system, the binder system being formed by admixing a polyol selected from the group comprising a saccharide, a saccharide polymer, and a glyco protein with glyoxal, with a solvent, and with an alkali halide; forming the admixture in a heated mold; removing the bonded article from the mold; and allowing it to cool.
Inventors
- 👤 Robert G. Cummisford
- 👤 Richard J. Wasielewski
- 👤 Robert K. Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
C; C08; C08L; C08L3/00; C08L3/02; B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2246; B22C1/26; C08B; C08B31/00; C08B37/00; C08G; C08G4/00; C08K; C08K3/00; C08K3/16; C08K3/34; C08L1/00; C08L1/02; C08L5/00; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
71 words
The method of manufacturing a bonded particulate article comprising the steps of admixing particulate material with a binder system, the binder system being formed by admixing a polyol selected from the group comprising a saccharide, a saccharide polymer, and a glyco protein with glyoxal, with a solvent, and with an alkali halide; forming the admixture in a heated mold; removing the bonded article from the mold; and allowing it to cool.
Claim 2
Independent Claim
71 words
The method of manufacturing a bonded particulate article comprising the steps of admixing particulate material with a binder system, the binder system being formed by admixing a polyol selected from the group comprising a saccharide, a saccharide polymer, and a glyco protein with glyoxal, with a solvent, and with an alkali halide; forming the admixture in a heated mold; removing the bonded article from the mold; and allowing it to cool.
Claim 3
Dependent Claim
11 words
The method claimed in claim 1 wherein the solvent is water.
Claim 4
Dependent Claim
12 words
The method claimed in claim 2 wherein the particulate material is sand.
Claim 5
Dependent Claim
12 words
The method claimed in claim 2 wherein the particulate material is cellulosic.
Claim 6
Dependent Claim
35 words
A bonded particulate article manufactured by the method of claim 1 and comprising 80%-99% particulate material and 1%-20% binder system with the latter being comprised of 60%-84% saccharide material, 3%-27% glyoxal, and 8%-32% alkali halide.
Claim 7
Dependent Claim
23 words
A bonded particulate article as claimed in claim 5 wherein the particulate material is sand and the bonded article is a foundry core.
Claim 8
Dependent Claim
15 words
The bonded particulate article as claimed in claim 5 wherein the particulate material is cellulosic.
Claim 9
Dependent Claim
31 words
The bonded particulate article as claimed in claim 7 wherein the cellulosic particulate material is a refined wood from the group consisting of sawdust, wood chips, wood particles, and wood fiber.
Claim 10
Independent Claim
57 words
The method of manufacturing a bonded particulate article comprising the steps of admixing a particulate material with a binder system wherein the latter is formed by the steps of admixing a saccharide-containing material with glyoxal, a solvent and an alkali halide; forming the article in a mold; removing the article from the mold; and desolventizing the article.
Claim 11
Independent Claim
57 words
The method of manufacturing a bonded particulate article comprising the steps of admixing a particulate material with a binder system wherein the latter is formed by the steps of admixing a saccharide-containing material with glyoxal, a solvent and an alkali halide; forming the article in a mold; removing the article from the mold; and desolventizing the article.
Claim 12
Dependent Claim
16 words
The method claimed in claim 9 wherein the desolventizing is accomplished by the application of heat.
Claim 13
Dependent Claim
20 words
The method claimed in claim 10 wherein the article is coated with additional solvent prior to the application of heat.
Claim 14
Dependent Claim
27 words
The method claimed in claim 11 wherein the solvent which is applied prior to the application of heat contains a coating material to surface coat the article.
Claim 15
Dependent Claim
11 words
The method claimed in claim 9 wherein the solvent is water.
Claim 16
Dependent Claim
34 words
A bonded particulate article manufactured by the method of claim 9 comprising 80%-99% particulate material and 1%-20% binder system, with the latter being comprised of 60%-84% saccharide material, 3%-27% glyoxal, and 8%-32% alkali halide.
Claim 17
Dependent Claim
19 words
The article claimed in claim 14 wherein the particulate material is sand and the article is a foundry core.
References Cited (Backward Citations)
US3357846A
Cited
US4013629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |