# US 4,400,327 A · Preparation of siloxylated metal-containing catalysts

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- Number: US 4,400,327 A
- Document ID: US4400327A
- Status: Granted
- Kind: A
- Application number: 06/335,612
- Filed: 1981-12-30
- Granted: 1983-08-23
- Earliest claimed: 1981-12-30
- Assignees: Union Carbide Corporation
- Inventors: Feyyaz O, Baskent; James D. Reedy
- Web page: https://patentgrep.com/patent/US4400327A

## CPC

- C08G 18/24: of tin
- C07F 7/0836: {Compounds with one or more Si-OH or Si-O-metal linkage}
- C07F 7/2224: {Compounds having one or more tin-oxygen linkages}
- C07F 7/24: Lead compounds
- C07F 7/28: Titanium compounds
- C08G 18/22: containing metal compounds
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)

## Abstract

Reaction of silylamine with a metallic carboxylate produces siloxylated organometallic compounds with M--O--Si bonds. These siloxylated organometallic compounds are useful catalysts in the preparation of urethane foams and elastomers, especially when prepared in situ with the urethane foam or elastomer reactants.

## Claims

### Claim 1

A process for preparing a siloxylated organometallic catalyst which comprises reacting below 100.degree. C. a silylamine of the formula:
R.sub.4-n Si(NR'R").sub.n
wherein R is a alkyl, alkaryl, alkenyl, alkynyl, aryl cycloaliphatic, or heteroatom substituted aliphatic siloxy or substituted siloxy group; R' and R" are individually hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, groups provided R' and R" cannot both be hydrogen; and n is one to four inclusive, with a metallic carboxylate of the formula:
M(OCOR'").sub.x R"".sub.y
wherein M is a metal with an oxidation state, R'" and R"" are individually an alkyl, alkaryl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, group; x is at least one but no more than the oxidation state of M and y is equal to the oxidation state of M minus x, and M is greater than or equal to two.

### Claim 2 (depends on 1)

The process of claim 1 wherein the R, R' and R" groups of the silylamine employed are alkyl groups containing no more than twenty-four carbon atoms each.

### Claim 3 (depends on 2)

The process of claim 2 wherein the R, R' and R" groups of the silylamine employed contain no more than twelve carbons each.

### Claim 4 (depends on 3)

The process of claim 3 where in the R, R' and R" groups of the silylamine employed are methyl groups.

### Claim 5 (depends on 1)

The process of claim 1 wherein the value of n is equal to one.

### Claim 6 (depends on 1)

The process of claim 1 wherein the R'" and R"" groups of the metallic carboxylate are alkyl groups containing no more than twenty-four carbon atoms each.

### Claim 7 (depends on 6)

The process of claim 6 wherein the R'" and R"" groups of the metallic carboxylate contain no more than twelve carbon atoms.

### Claim 8 (depends on 1)

The process of claim 1 wherein M is a metal selected from the group consisting of the metals of group IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIII, gallium, indium, thallium, germanium, tin and lead.

### Claim 9 (depends on 8)

The process of claim 8 wherein M is selected from the group consisting of iron, tin, lead, titanium, cerium and mercury.