US4268425A
Expired / Lapsed
US
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Phenolic resin-polyisocyanate binder systems containing a drying oil and use thereof
Assignee: Ashland Inc
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Filing: 1979-05-14
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Granted: 1981-05-19
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Expires: 1999-05-14
Abstract
Abstract A binder containing a phenolic resin; a polyisocyanate; a curing component, and a drying oil; and use thereof.
Inventors
- 👤 John J. Gardikes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:02
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2273; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/65; C08G18/6547; H02M7/505; H02M7/515
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
115 words
A binder composition comprising in admixture a resin component, a hardener component, a curing component and a drying oil; said resin component including a non-aqueous phenolic resin which comprises a condensation product of a phenol having the general formula: ##STR7## wherein A, B and C are hydrogen, hydrocarbon radicals, or halogen, with an aldehyde having the general formula R'CHO wherein R' is a hydrogen or a hydrocarbon radical of 1 to 8 carbon atoms; said hardener component comprising liquid polyisocyanate containing at least two isocyanate groups, and said drying oil is selected from the group of ester of ethylenically unsaturated fatty acid, heat bodied modification thereof, air-blown modification thereof, oxygen-blown modification thereof, or mixtures thereof.
Claim 2
Dependent Claim
115 words
A binder composition comprising in admixture a resin component, a hardener component, a curing component and a drying oil; said resin component including a non-aqueous phenolic resin which comprises a condensation product of a phenol having the general formula: ##STR7## wherein A, B and C are hydrogen, hydrocarbon radicals, or halogen, with an aldehyde having the general formula R'CHO wherein R' is a hydrogen or a hydrocarbon radical of 1 to 8 carbon atoms; said hardener component comprising liquid polyisocyanate containing at least two isocyanate groups, and said drying oil is selected from the group of ester of ethylenically unsaturated fatty acid, heat bodied modification thereof, air-blown modification thereof, oxygen-blown modification thereof, or mixtures thereof.
Claim 3
Dependent Claim
12 words
The binder composition of claim 1 wherein said oil is linseed oil.
Claim 4
Dependent Claim
13 words
The binder composition of claim 1 wherein said oil is a vegetable oil.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein said oil is soybean oil.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein said oil is tung oil.
Claim 7
Dependent Claim
14 words
The binder system of claim 1 wherein said phenolic resin is a novolak resin.
Claim 8
Dependent Claim
21 words
The binder composition of claim 1 wherein said phenolic resin is from a phenol which comprises an alkyl ortho-substituted phenolic compound.
Claim 9
Dependent Claim
20 words
The composition of claim 1 wherein said phenolic resin is from a phenol which comprises a mono alkyl ortho-substituted phenol.
Claim 10
Dependent Claim
19 words
The binder system of claim 1 wherein said phenolic resin is a novolak resin from o-cresol, phenol, and formaldehyde.
Claim 11
Dependent Claim
10 words
The binder composition of claim 1 which includes a silane.
Claim 12
Dependent Claim
21 words
The composition of claim 1 wherein the amount of oil is at least about 2% by weight of the binder composition.
Claim 13
Dependent Claim
24 words
The composition of claim 1 wherein said oil is present in an amount of up to about 15% by weight of the binder composition.
Claim 14
Dependent Claim
25 words
The composition of claim 1 wherein said oil is present in an amount of about 2 to about 15% by weight of the binder composition.
Claim 15
Dependent Claim
26 words
The binder composition of claim 1 wherein said oil is present in an amount of about 4 to about 10% by weight of the binder composition.
Claim 16
Dependent Claim
27 words
The composition of claim 1 wherein said phenolic resin is from a phenolic component which includes ortho-cresol and phenol in mole ratios of about 0.2:0.8 to 0.8:0.2.
Claim 17
Dependent Claim
23 words
The binder composition of claim 1 wherein said phenolic resin is from phenol, ortho-cresol, and formaldehyde in a mole ratio of about 0.5:0.5:0.675.
Claim 18
Dependent Claim
25 words
The composition of claim 9 or 15 or 16 wherein the amount of oil is at least about 2% by weight of the binder composition.
Claim 19
Dependent Claim
29 words
The composition of claim 9 or 15 or 16 wherein said oil is present in an amount of about 2 to about 15% by weight of the binder composition.
Claim 20
Dependent Claim
30 words
The binder composition of claim 9 or 15 or 16 wherein said oil is present in an amount of about 4 to about 10% by weight of the binder composition.
Claim 21
Dependent Claim
21 words
The composition of claim 1 wherein said ester is a glyceride of fatty acid which contains at least two double bonds.
Claim 22
Dependent Claim
45 words
A molding composition which comprises: A. a major amount of aggregate; and B. an effective bonding amount up to about 40% by weight of the aggregate of the binder composition of claims 1, 2, 3, 4, 5, 6, 9, 13, 14, 15, 16, or 20.
Claim 23
Dependent Claim
22 words
The composition of claim 21 wherein the amount of said binder composition is about 0.6-about 5% based upon the weight of aggregate.
Claim 24
Dependent Claim
102 words
A process for the fabrication of foundry shape which comprises: A. mixing foundry aggregate with a bonding amount of up to about 10% by weight based upon the weight of the aggregate of the binder composition of claims 1, 2, 3, 4, 5, 6, 9, 13, 14, 15, 16 or 20. B. introducing the foundry mix obtained from step (A) into a pattern; C. hardening the foundry mix in the pattern to become self-supporting; and D. thereafter removing the shaped foundry mix of step (C) from the pattern and allowing it to further cure, thereby obtaining a hard, solid, cured foundry shape.
Claim 25
Dependent Claim
22 words
The process of claim 23 wherein the amount of said binder composition is about 0.6-about 5% based upon the weight of aggregate.
Claim 26
Dependent Claim
46 words
A process of casting a metal which comprises: A. fabricating a shape in accordance with claim 23; B. pouring said metal while in the liquid state into or around said shape; C. allowing said metal to cool and solidify; and D. then separating the molded article.
Claim 27
Dependent Claim
41 words
The process of claim 25 wherein said metal is a relatively low melting point non-ferrous metal melting at about 2000° F. or below, and the amount of said binder is about 0.6-about 1.5% by weight based upon the weight of aggregate.
Claim 28
Dependent Claim
10 words
The process of claim 26 wherein said metal is aluminum.
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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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |