US4705570A
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Method of manufacturing a bonded particulate article by reacting a polyol and a meterocyclic compound
Assignee: Wyeth Holdings LLC
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Filing: 1985-11-05
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Granted: 1987-11-10
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Expires: 2005-11-05
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 a heterocyclic compound of the formula ##STR1## wherein R 1 and R 2 are, independently, aryl of from 6 to 12 carbon atoms, alkyl of from 1 to 6 carbon atoms or substituted alkyl of from 1 to 6 carbon atoms wherein the substituting group is hydroxy, alkoxy of from 1 to 6 carbon atoms, hydroxyalkoxy of from 1 to 6 carbon atoms, cyano, carboxy, carbalkoxy of from 1 to 7 carbon atoms or carbamoyl, or when R 1 is --C x H 2x --, R 2 is --C x H 2x O--, x being from 1 to 7, X is oxygen, sulfur or imino and Z is a divalent bridging radical, with a solvent, and an acid effective to control the rate of crosslinking between said polyol and said heterocyclic compound; forming the admixture in a shape; and curing to form the bonded article.
Inventors
- 👤 Albert P. Paul
- 👤 Roger J. Card
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; C; C08; C08B; C08B31/00; B22C1/22; B22C1/2293; C08L; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
181 words
A curable composition adapted to produce a shaped bonded particulate article, said composition comprising (i) a major amount of a particulate material; and, in a minor amount, as a binder therefor, (ii) A polyol selected from a saccharide, a saccharide polymer, a glyco protein, or mixtures of any of the foregoing; (iii) a crosslinker for said polyol (ii) comprising a compound of the formula ##STR20## wherein R 1 and R 2 are, independently, aryl of from 6 to 12 carbon atoms, alkyl of from 1 to 6 carbon atoms or substituted alkyl of from 1 to 6 carbon atoms wherein the substituting group is hydroxy, alkoxy of from 1 to 6 carbon atoms, hydroxyalkoxy of from 1 to 6 carbon atoms, cyano, carboxy, carbalkoxy of from 1 to 7 carbon atoms of carbamoyl, or when R 1 is --C x H 2x --, R 2 is --C x H 2x O--, x being from 1 to 6, X is oxygen, sulfur or imino and Z is a divalent bridging radical; (iv) an acid catalyst; and (v) a solvent for the binder.
Claim 2
Dependent Claim
181 words
A curable composition adapted to produce a shaped bonded particulate article, said composition comprising (i) a major amount of a particulate material; and, in a minor amount, as a binder therefor, (ii) A polyol selected from a saccharide, a saccharide polymer, a glyco protein, or mixtures of any of the foregoing; (iii) a crosslinker for said polyol (ii) comprising a compound of the formula ##STR20## wherein R 1 and R 2 are, independently, aryl of from 6 to 12 carbon atoms, alkyl of from 1 to 6 carbon atoms or substituted alkyl of from 1 to 6 carbon atoms wherein the substituting group is hydroxy, alkoxy of from 1 to 6 carbon atoms, hydroxyalkoxy of from 1 to 6 carbon atoms, cyano, carboxy, carbalkoxy of from 1 to 7 carbon atoms of carbamoyl, or when R 1 is --C x H 2x --, R 2 is --C x H 2x O--, x being from 1 to 6, X is oxygen, sulfur or imino and Z is a divalent bridging radical; (iv) an acid catalyst; and (v) a solvent for the binder.
Claim 3
Dependent Claim
70 words
A curable composition as defined in claim 1 wherein particulate material (i) comprises 80%-99% by weight and said binder comprises from 1%-20% by weight, the amount of polyol (ii) in said binder comprising 20%-55%; the amount of crosslinker (iii) in said binder comprising 3%-60%; the amount of acid (iv) in said binder comprising 0.2%-10% and the amount of solvent (v) in said binder comprising 15%-85%, all percentages being by weight.
Claim 4
Dependent Claim
15 words
A curable composition as defined in claim 1 wherein the particulate material (i) is sand.
Claim 5
Dependent Claim
32 words
A curable composition as defined in claim 1 wherein the polyol (ii) is selected from sucrose, maltose, corn syrup, corn syrup solids, glyco proteins, or a mixture of any of the foregoing.
Claim 6
Dependent Claim
88 words
A curable composition as defined in claim 1 wherein in said crosslinker (iii) Z is of the general formulae ##STR21## wherein R 3 and R 4 are, independently, hydrogen or organic radicals of from 1 to 30 carbon atoms, Y is a connecting carbon-to-carbon single bond or a methylene radical, and R 5 and R 6 are independent radicals and together may form a divalent radical, and R 7 and R 8 are the same as defined above for R 1 and R 2 and, in addition, hydrogen.
Claim 7
Dependent Claim
15 words
A composition as defined in claim 5 wherein said crosslinker is of the formula: ##STR22##
Claim 8
Dependent Claim
15 words
A composition as defined in claim 5 wherein said crosslinker is of the formula: ##STR23##
Claim 9
Dependent Claim
35 words
A curable composition as defined in claim 1 wherein said acid is an inorganic acid, an organic acid, a Lewis acid, a Bronsted acid or a metal or non-metal salt which acts as an acid.
Claim 10
Dependent Claim
13 words
A curable composition as defined in claim 1 wherein said solvent is water.
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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |