US4371648A
Expired / Lapsed
US
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Composition containing furfuryl alcohol and use thereof in foundry binders
Assignee: Ashland Inc
•
Filing: 1980-05-12
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Granted: 1983-02-01
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Expires: 2000-05-12
Abstract
Abstract A composition containing furfuryl alcohol and an ester of a polyol and resin acid; and use thereof in foundry binders.
Inventors
- 👤 John J. Gardikes
- 👤 Young D. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/36; B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/224; C08L; C08L61/00; C08L61/34; C08L71/00; C08L71/08; C08L71/14
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
65 words
A composition containing a binder component comprising at least about 20 weight % furfuryl alcohol and an ester of a polyol and a resin acid in an amount of at least about 5% by weight based upon the total of said binder component and ester and a modifying agent for the furfuryl alcohol selected from the group of furan polymers, urea-formaldehyde polymers, or mixtures thereof.
Claim 2
Dependent Claim
65 words
A composition containing a binder component comprising at least about 20 weight % furfuryl alcohol and an ester of a polyol and a resin acid in an amount of at least about 5% by weight based upon the total of said binder component and ester and a modifying agent for the furfuryl alcohol selected from the group of furan polymers, urea-formaldehyde polymers, or mixtures thereof.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein said polyol contains 2 or 3 hydroxyl groups.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein said polyol includes a glycol.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein said polyol is selected from the group of alkylene glycols, polyalkylene glycols, glycerol, and mixtures thereof.
Claim 6
Dependent Claim
27 words
The composition of claim 1 wherein said glycol is selected from the group of ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, butylene glycol, or mixtures thereof.
Claim 7
Dependent Claim
26 words
The composition of claim 1 wherein said resin acid includes an acid from the group of abietic acid, levopimaric acid, neoabietic acid, and disproportionated abietic acid.
Claim 8
Dependent Claim
49 words
The composition of claim 1 wherein said ester is obtained from reacting a polyol in an amount sufficient to react with at least about 80% by weight of all the carbomethoxy groups present in resin ester or of the carboxy groups present in the resin acid or of both.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein said ester is obtained from employing about a 10% stoichiometric excess per resin ester or resin acid employed or both.
Claim 10
Dependent Claim
12 words
The composition of claim 1 wherein said modifying agent includes furan polymers.
Claim 11
Dependent Claim
16 words
The composition of claim 1 wherein said binder component contains furfuryl alcohol and a urea-formaldehyde polymer.
Claim 12
Dependent Claim
31 words
The composition of claim 1 wherein the amount of furfuryl alcohol is about 20 to about 99% by weight based upon the combined weight of the furfuryl alcohol and modifying agent.
Claim 13
Dependent Claim
33 words
The composition of claim 1 wherein the furfuryl alcohol is present in an amount of about 45 to about 98% by weight based upon the total of the furfuryl alcohol and modifying agent.
Claim 14
Dependent Claim
9 words
The composition of claim 1 which includes a silane.
Claim 15
Dependent Claim
31 words
The composition of claim 13 wherein silane is present in an amount from about 0.05 to about 2% by weight based upon the total of the binder component of the composition.
Claim 16
Dependent Claim
28 words
The composition of claim 1 wherein the amount of ester is about 5 to about 60% by weight based upon the total of said binder component and ester.
Claim 17
Dependent Claim
32 words
The composition of claim 1 wherein the ester is present in an amount of about 10 to about 50% by weight based upon the total of said ester and said binder component.
Claim 18
Dependent Claim
18 words
The composition of claim 1 which further includes an acid catalyst having a pK a lower than 2.3.
Claim 19
Dependent Claim
35 words
The composition of claim 17 wherein said catalyst is present in an amount from about 5 to about 75% by weight based upon the total weight of the ester and binder component of the composition.
Claim 20
Dependent Claim
33 words
The composition of claim 17 wherein said acid is present in an amount of about 20 to about 50% by weight based upon the total weight of said ester and said binder component.
Claim 21
Dependent Claim
71 words
A molding composition which comprises a major amount of aggregate and an effective bonding amount up to about 40% by weight of the aggregate of a binder composition containing a binder component comprising at least about 20 weight % furfuryl alcohol and an ester of a polyol and a resin acid in an amount of at least about 5% by weight based upon the total of said binder component and ester.
Claim 22
Dependent Claim
71 words
A molding composition which comprises a major amount of aggregate and an effective bonding amount up to about 40% by weight of the aggregate of a binder composition containing a binder component comprising at least about 20 weight % furfuryl alcohol and an ester of a polyol and a resin acid in an amount of at least about 5% by weight based upon the total of said binder component and ester.
Claim 23
Dependent Claim
25 words
The molding composition of claim 20 wherein said aggregate is silica sand and the amount of binder composition is up to about 10% by weight.
Claim 24
Dependent Claim
26 words
The composition of claim 20 wherein the amount of binder composition is about 0.5 to about 7% by weight based upon the weight of the aggregate.
Claim 25
Dependent Claim
26 words
The composition of claim 20 wherein the amount of binder is from about 0.6 to about 5% by weight based upon the weight of the aggregate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |