# US 11,299,571 B2 · Aqueous polymer composition

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

- Number: US 11,299,571 B2
- Document ID: US11299571B2
- Status: Granted
- Kind: B2
- Application number: 16/641,752
- Filed: 2017-09-26
- Published: 2020-11-19
- Granted: 2022-04-12
- Earliest claimed: 2017-09-26
- Assignees: Dow Global Technologies LLC; Rohm and Haas Company
- Applicants: Dow Global Technologies LLC; Rohm and Haas Company
- Inventors: Han Liu; Junyu Chen; Yaguang Zhao; Xiangting Dong; Qingwei Zhang; Ling Li; Yan Luo; Jintao Liu
- Web page: https://patentgrep.com/patent/US11299571B2

## CPC

- C08F 220/283: {and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate}
- C08K 5/3435: Piperidines
- C08K 5/46: with oxygen or nitrogen in the ring
- C08K 5/56: Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
- C08L 33/14: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08L 101/00: Compositions of unspecified macromolecular compounds
- C09D 5/14: Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence)
- C09D 7/48: Stabilisers against degradation by oxygen, light or heat
- C08L 2201/54: Aqueous solutions or dispersions
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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

An aqueous polymer composition comprising an acetoacetoxy functional polymer, a metal pyrithione compound, and TEMPO and/or its derivative, showing less yellowing.

## Claims

### Claim 1

An aqueous polymer composition, comprising,
(a) an acetoacetoxy functional polymer, comprising, based on the weight of the polymer, from 0.05% to 10% by weight of structural units of an acetoacetoxy functional monomer,
(b) a metal pyrithione compound, and
(c) from 0.005% to 1% by weight of TEMPO and/or a derivative thereof, based on the total weight of the aqueous polymer composition.

### Claim 2 (depends on 1)

The aqueous polymer composition of claim 1, wherein TEMPO and/or the derivative thereof have the structure of formula (II),
wherein R is H, —OH, an alkyl, an alkoxy, or a (hetero)aryl.

### Claim 3 (depends on 1)

The aqueous polymer composition of claim 1, wherein TEMPO and/or a derivative thereof are selected from the group consisting of TEMPO, 4-hydroxy-TEMPO, 4-methyl-TEMPO, 4-methoxy-TEMPO, and 4-ethyl-TEMPO.

### Claim 4 (depends on 1)

The aqueous polymer composition of claim 1, wherein the metal pyrithione compound is present in an amount of from 0.001% to 2% by weight, based on the total weight of the aqueous polymer composition.

### Claim 5 (depends on 1)

The aqueous polymer composition of claim 1, wherein the metal pyrithione compound is zinc pyrithione, copper pyrithione, or a mixture thereof.

### Claim 6 (depends on 1)

The aqueous polymer composition of claim 1, wherein the acetoacetoxy functional monomer is selected from the group consisting of acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate, acetoacetoxypropyl methacrylate, allyl acetoacetate, acetoacetoxybutyl methacrylate, and 2,3-di(acetoacetoxy)propyl methacrylate.

### Claim 7 (depends on 1)

The aqueous polymer composition of claim 1, comprising from 0.01% to 0.1% by weight of TEMPO and/or a derivative thereof, based on the total weight of the aqueous polymer composition.

### Claim 8

A method for reducing yellowing of an aqueous coating composition comprising an acetoacetoxy functional polymer comprising, based on the weight of the polymer, from 0.05% to 10% by weight of structural units of an acetoacetoxy functional monomer, and a metal pyrithione compound, the method comprising a step of:
adding from 0.005% to 1% by weight of TEMPO and/or a derivative thereof into the aqueous coating composition, based on the total weight of the aqueous coating composition and TEMPO and/or a derivative thereof.