# US 4,393,152 A · Oxidatively coupled cold-set binders

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- Number: US 4,393,152 A
- Document ID: US4393152A
- Status: Granted
- Kind: A
- Application number: 06/283,718
- Filed: 1981-07-16
- Granted: 1983-07-12
- Earliest claimed: 1981-07-16
- Assignees: International Minerals & Chemicals Corp.
- Inventors: Charles E. Seeney; John F. Kraemer; Nancy C. Varnum
- Web page: https://patentgrep.com/patent/US4393152A

## CPC

- B22C 1/2233: {obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds}
- C08G 65/44: by oxidation of phenols
- C08L 49/00: Compositions of homopolymers or copolymers of compounds having one or more carbon-to-carbon triple bonds; Compositions of derivatives of such polymers
- B22C: FOUNDRY MOULDING (moulding refractory materials in general B28B)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.

## Claims

### Claim 1

A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor polymerizable by contact with oxygen, an amine and a metal salt catalyst, the binder being a disubstituted phenol represented by the formula ##STR2## where R.sup.1 and R.sup.2 can be lower alkyl, methoxy, halide or phenyl.

### Claim 2 (depends on 1)

A process for preparing foundary cores and molds comprising the steps of (a) mixing a foundry aggregate with a polymerizable binder of claim 1, a metal salt catalyst therefor and an amine; (b) placing the mixture in a mold or core box and (c) passing an oxygen source through the mixture to effect oxidative polymerization of the binder and (d) removing the core or mold from the core box or mold.

### Claim 3 (depends on 1)

The composition of claim 1 wherein the binder is used in a ratio of about 0.1 to 10.0 parts per 100 parts of aggregate.

### Claim 4 (depends on 1)

The composition of claim 1 wherein the binder is used in a ratio of about 1-3 parts per 100 parts of aggregate.

### Claim 5 (depends on 1)

The composition of claim 1 wherein the amine is a tertiary amine.

### Claim 6 (depends on 5)

The composition of claim 5 wherein the amine is a pyridine.

### Claim 7 (depends on 5)

The composition of claim 5 wherein the amine is a substituted pyridine.

### Claim 8 (depends on 7)

The composition of claim 7 wherein the amine is 2-(2-dimethylamino)ethylpyridine.

### Claim 9 (depends on 7)

The composition of claim 7 wherein the amine is 4,4-trimethylenepyridine.

### Claim 10 (depends on 5)

The composition of claim 5 wherein the amine is N,N,N',-N'-tetramethylethylenediamine.

### Claim 11 (depends on 5)

The composition of claim 5 wherein the amine is N,N,N',-N'-tetramethyl-1,3-butanediamine.

### Claim 12 (depends on 5)

The composition of claim 5 wherein the amine is used in an amount of about 1.5 to 30% based on the weight of the polymerizable binder formulation.

### Claim 13 (depends on 12)

The composition of claim 12 wherein the amine is used in an amount of about 18%.

### Claim 14 (depends on 1)

The composition of claim 1 wherein the metal salt catalyst is a salt of lead, manganese, cobalt II, or copper I.

### Claim 15 (depends on 1)

The composition of claim 1 wherein the salt is a cuprous halide, cuprous acetate, cuprous sulfate or cuprous oxide.

### Claim 16 (depends on 1)

The composition of claim 1 wherein the catalyst is present in a mole ratio of 1 to 1-20 parts of amine.