Patent US3676392A successfully refreshed from Google Patents.
US3676392A
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Resin compositions
Assignee: Ashland LLC
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Filing: 1971-01-26
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Granted: 1972-07-11
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Expires: 1991-01-26
Abstract
Abstract Novel resin compositions comprising mixture of organic solvent soluble phenolic resin containing benzylic ether linkage and/or methylol end group with polyisocyanate and catalytic concentrations of a base. The resin compositions are capable of curing at room temperature and are useful as coating and binder compositions.
Inventors
- 👤 Janis Robins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G8/00; C08G8/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
22 words
The resin composition of claim 1, wherein the resin component is a benzylic ether resin which contains a unit of the formula:
Claim 2
Dependent Claim
11 words
The resin composition of claim 2, wherein the aldehyde is formaldehyde.
Claim 3
Dependent Claim
23 words
The resin composition of claim 2, wherein the aldehyde is formaldehyde, and A and B are hydrogen, and C is a hydrocarbon radical.
Claim 4
Dependent Claim
17 words
The resin composition of claim 2, wherein the aldehyde is formaldehyde and A,B and C are hydrogen.
Claim 5
Dependent Claim
40 words
The resin composition of claim 1, wherein the resin component is a benzylic ether resin which is obtained by polymerizing the phenol and the aldehyde in the liquid phase in the substantial absence of water at temperatures below 130* C.
Claim 6
Dependent Claim
20 words
The resin composition of claim 1, wherein the resin component is a benzylic ether resin which has the general formula:
Claim 7
Dependent Claim
10 words
The resin composition of claim 7, wherein R is hydrogen.
Claim 8
Dependent Claim
13 words
The resin composition of claim 1, wherein the polyisocyanate is an aromatic polyisocyanate.
Claim 9
Dependent Claim
13 words
The resin composition of claim 9, wherein the aromatic polyisocyanate is diphenylmethane diisocyanate.
Claim 10
Dependent Claim
13 words
The resin composition of claim 7, wherein the polyisocyanate is an aromatic polyisocyanate.
Claim 11
Dependent Claim
13 words
The resin composition of claim 1, wherein the base is a nitrogen compound.
Claim 12
Dependent Claim
14 words
The resin composition of claim 1, wherein the base is a heterocyclic nitrogen compound.
Claim 13
Dependent Claim
16 words
The resin composition of claim 1, wherein the base is pyridine or a derivative of pyridine.
Claim 14
Dependent Claim
34 words
The resin composition of claim 1, wherein the base is a 4-alkyl pyridine wherein the alkyl group has from one to four carbon atoms, isoquinoline, an aryl-pyridine, acridine, 2-methoxy pyridine, 4,4-dipyridine or phenylpropyl pyridine.
Claim 15
Dependent Claim
31 words
A foundry mix containing sand as the major consitutent and a binding amount of up to 10 percent based on the weight of sand of the resin composition of claim 1.
Claim 16
Dependent Claim
31 words
A foundry mix containing sand as the major consitutent and a binding amount of up to 10 percent based on the weight of sand of the resin composition of claim 7.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |