# US 8,772,408 B2 · Binders containing nanoparticles

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

- Number: US 8,772,408 B2
- Document ID: US8772408B2
- Status: Granted
- Kind: B2
- Application number: 13/588,108
- Filed: 2012-08-17
- Published: 2012-12-13
- Granted: 2014-07-08
- Earliest claimed: 2007-12-19
- Assignees: Bayer Intellectual Property GmbH
- Applicants: Michael Mager; Markus Mechtel; Nusret Yuva; Alice Münzmay
- Inventors: Thomas Münzmay; Michael Mager; Markus Mechtel; Nusret Yuva
- Web page: https://patentgrep.com/patent/US8772408B2

## CPC

- C08G 18/6254: {Polymers of alpha-beta ethylenically unsaturated carboxylic acids and of esters of these acids containing hydroxy groups}
- C08F 220/20: of polyhydric alcohols or phenols {, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate}
- C08G 18/6295: {Polymers of silicium containing compounds having carbon-to-carbon double bonds}
- C08G 18/706: {the liquid medium being water}
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08K 9/04: Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)}
- C09D 5/028: {Pigments; Filters}
- C09D 7/62: modified by treatment with other compounds
- C09D 133/06: of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D 175/04: Polyurethanes
- C08F 220/1811: {C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate}
- C08K 3/36: Silica
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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)
- 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

The present invention relates to aqueous binder dispersions based on silane-modified polymeric binders and inorganic nanoparticles, a process for the preparation thereof and the use thereof for the production of high quality coatings, in particular clear lacquers.

## Claims

### Claim 1

A method for stabilizing inorganic nanoparticles, wherein the method comprises forming an aqueous formulation comprising
A) a silane-modified copolymer comprising groups of general formula (1)
—Si(R1O)2R2 (1)
wherein
R1 is a C2- to C8-alkyl radical; and
R2 is (R1O) or a C1- to C5-alkyl radical,
built up from
I) a hydroxy-functional hydrophobic polymer containing as builder monomers
Ia) (meth)acrylic acid esters having C1- to C18-hydrocarbon radicals in the alcohol part and/or vinylaromatics and/or vinyl esters;
Ib) hydroxy-functional monomers; and
IS1) silane-functional monomers capable of polymerization;
and
II) a hydroxy-functional hydrophilic polymer containing as builder components
IIa) (meth)acrylic acid esters having C1- to C18-hydrocarbon radicals in the alcohol part and/or vinylaromatics and/or vinyl esters;
IIb) hydroxy-functional monomers; and
IIc) acid-functional monomers;
B) inorganic particles which are optionally surface-modified, and having an average particle size (z-mean), as determined by means of dynamic light scattering in dispersion, of less than 200 nm, wherein said inorganic particles B) are inorganic nanoparticles in a colloidally disperse form in organic solvents or in water; and
C) water;
wherein the inorganic particles are introduced by mechanical stirring.

### Claim 2 (depends on 1)

The method of claim 1, wherein said silane-functional monomer IS1), which is capable of polymerization, is a compound of the general formula (2)
(R1O)2R2Si—(CH═CH2) (2)
wherein
R1 is a C2- to C8-alkyl radical; and
R2 is (R1O) or a C1- to C5-alkyl radical;
and/or a compound of the general formula (3)
(R1O)2R2Si(CH2)m—O(CO)—(CR3═CH2) (3)
wherein
R1 is a C2- to C8-alkyl radical;
R2 is (R1O) or a C1- to C5-alkyl radical;
R3 is H or CH3; and
m is 1 to 4.

### Claim 3 (depends on 1)

The method of claim 1, wherein said silane-functional monomer IS1), which are capable of polymerization, is selected from the group consisting of vinyltriethoxysilane, vinyltrisisopropoxysilane, vinyl-tris-(2-methoxyethoxy)silane, vinylmethyldiethoxysilane, vinylmethyldiisopropoxysilane, vinylethyldiethoxysilane, 3-(triethoxysilyl)-propyl methacrylate or 3-(tris-isopropoxysilyl)-propyl methacrylate, vinylphenyldiethoxysilane, vinylphenylmethylethoxysilane, and vinyltri-t-butoxysilane.

### Claim 4 (depends on 1)

The method of claim 1, wherein said inorganic particles B) are selected from the group consisting of inorganic oxides, mixed oxides, carbides, borides, and nitrides of elements of main group II to IV and/or elements of subgroup I to VIII of the periodic table, including the lanthanides.

### Claim 5 (depends on 1)

The method of claim 1, wherein said inorganic particles B) are surface-modified inorganic nanoparticles.