# US 8,785,588 B2 · Tin-containing polyurethane resin

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,785,588 B2
- Document ID: US8785588B2
- Status: Granted
- Kind: B2
- Application number: 13/635,053
- Filed: 2011-05-05
- Published: 2013-01-03
- Granted: 2014-07-22
- Earliest claimed: 2010-05-10
- Assignees: Axalta Coating Systems IP Co., LLC
- Applicants: Carmen Flosbach
- Inventors: Carmen Flosbach
- Web page: https://patentgrep.com/patent/US8785588B2

## CPC

- C08G 18/281: {Monocarboxylic acid compounds}
- C08G 18/0823: {containing carboxylate salt groups or groups forming them}
- C08G 18/16: Catalysts (catalysts in general B01J)
- C08G 18/246: {containing also tin-carbon bonds}
- C08G 18/341: {Dicarboxylic acids, esters of polycarboxylic acids containing two carboxylic acid groups}
- C08G 18/73: acyclic
- C08G 18/758: {containing two or more cycloaliphatic rings}
- C08G 18/792: {formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates}
- C09D 175/04: Polyurethanes
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A tin-containing polyurethane resin having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min and prepared by carrying out a condensation reaction between a diorganotin compound and carboxyl groups of a carboxyl-functional polyurethane resin, wherein the molar ratio between the tin and the carboxyl groups is 1:2-20; and liquid coating compositions containing solid particles of the tin-containing polyurethane resin.

## Claims

### Claim 1

A tin-containing polyurethane resin having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min and prepared by carrying out a condensation reaction between a diorganotin compound and carboxyl groups of a carboxyl-functional polyurethane resin, wherein the molar ratio between the tin and the carboxyl groups is 1:2-20, wherein the diorganotin compound is selected from the group consisting of diorganotin oxides and diorganotin dialkanoates, and wherein the carboxyl-functional polyurethane resin is selected from the group consisting of polyurethane dicarboxylic acids and polyurethane monocarboxylic acids.

### Claim 2 (depends on 1)

The tin-containing polyurethane resin of claim 1, wherein the melting temperature is from 40 to 150° C.

### Claim 3 (depends on 1)

The tin-containing polyurethane resin of claim 1 having a solubility of less than 10 g per liter of butyl acetate or water at 20° C.

### Claim 4 (depends on 1)

The tin-containing polyurethane resin of claim 1 having a tin content of 0.5 to 8 wt.-%, calculated as elemental tin metal.

### Claim 5 (depends on 1)

A liquid coating composition which contains a binder A and, as an optional component, a crosslinker B for the binder A, and solid particles of the tin-containing polyurethane resin of claim 1.

### Claim 6 (depends on 5)

The coating composition of claim 5 containing water and/or organic solvent(s) and having a solids content of 35 to 75 wt.-%, wherein the solids content consists of the resin solids content, the solid particles of the tin-containing polyurethane resin and the optional components chosen from the following: pigments, fillers and non-volatile additives.

### Claim 7 (depends on 5, 6)

The coating composition of claim 5 or 6, wherein the average particle size of the solid particles of the tin-containing polyurethane resin is 1 to 100 μm.

### Claim 8 (depends on 5)

The coating composition claim 5, wherein the solid particles of the tin-containing polyurethane resin are contained in a proportion of 0.5 to 10 wt.-%, relative to the resin solids of the coating composition.

### Claim 9 (depends on 5)

The coating composition of claim 5, wherein the binder A is a hydroxyl-functional binder and wherein the crosslinker B is a free or blocked polyisocyanate crosslinker.

### Claim 10 (depends on 5)

The coating composition of claim 5, wherein the solid particles of the tin-containing polyurethane resin are present as a catalyst, and wherein a catalyst component in the coating composition consists of the solid particles of the tin-containing polyurethane resin.

### Claim 11 (depends on 1)

The tin-containing polyurethane resin of claim 1, wherein the diorganotin compound is a diorganotin oxide.