# US 12,006,266 B2 · Baking slurry composition, green sheet, method for manufacturing green sheet, method for manufacturing sintered product, and method for manufacturing monolithic ceramic capacitor

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- Number: US 12,006,266 B2
- Document ID: US12006266B2
- Status: Granted
- Kind: B2
- Application number: 17/043,006
- Filed: 2019-03-13
- Published: 2021-01-14
- Granted: 2024-06-11
- Earliest claimed: 2019-03-13
- Assignees: Goo Chemical Co., Ltd.
- Applicants: Goo Chemical Co., Ltd.
- Inventors: Yutaka Kawai
- Web page: https://patentgrep.com/patent/US12006266B2

## CPC

- C04B 35/6264: {Mixing media, e.g. organic solvents}
- H01G 4/12: Ceramic dielectrics {(H01G4/085 takes precedence)}
- C04B 35/26: based on ferrites
- C04B 35/62218: {obtaining ceramic films, e.g. by using temporary supports}
- C04B 35/63416: {Polyvinylalcohols [PVA]; Polyvinylacetates}
- C04B 35/63424: {Polyacrylates; Polymethacrylates}
- C04B 35/64: Burning or sintering processes (C04B33/32 takes precedence {; powder metallurgy B22F})
- C04B 37/001: {directly with other burned ceramic articles}
- C08L 29/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C08L 33/00: Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- H01G 4/306: {made by thin film techniques}
- C04B 2235/3272: Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
- C04B 2235/606: Drying
- C04B 2235/612: Machining
- C04B 2235/6562: Heating rate
- C04B 2235/9638: Tolerance; Dimensional accuracy
- C04B 2237/34: Oxidic
- C08K 3/40: Glass
- C08K 2003/2227: {of aluminium}
- C08K 2003/2272: {Ferric oxide (Fe2O3)}
- C08L 33/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A baking slurry composition for producing a green sheet of the present invention contains inorganic powder, a polyvinyl alcohol resin, acrylic polymer, and water. The acrylic polymer has a glass transition temperature higher than or equal to −50° C. and lower than or equal to 30° C. and an acid value greater than or equal to 50 mg KOH/g and less than or equal to 200 mg KOH/g. The acrylic polymer has a weight percentage of more than or equal to 0.1 and less than or equal to 5.0 relative to a total solid content of the baking slurry composition.

## Claims

### Claim 1

A baking slurry composition for producing a green sheet, the baking slurry composition comprising:
inorganic powder (B);
a polyvinyl alcohol resin (C);
acrylic polymer (D); and
water,
the acrylic polymer (D) having a glass transition temperature higher than or equal to −50° C. and lower than or equal to 30° C. and an acid value greater than or equal to 50 mg KOH/g and less than or equal to 200 mg KOH/g,
the acrylic polymer (D) having a weight percentage of more than or equal to 0.1 and less than or equal to 5.0 relative to a total solid content of the baking slurry composition, and
the polyvinyl alcohol resin (C) containing
a component (C3) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, and
a component (C4) having a saponification degree of more than or equal to 60 mol % and less than 85 mol %.

### Claim 2 (depends on 1)

The baking slurry composition of claim 1, wherein
the acrylic polymer (D) includes a copolymer (D1) of a compound (d1) and a compound (d2),
the compound (d1) has a carboxyl group and an ethylenically unsaturated bond, and
the compound (d2) has an ethylenically unsaturated bond and is different from the compound (d1).

### Claim 3 (depends on 2)

The baking slurry composition of claim 2, wherein
the copolymer (D1) is neutralized by an amine compound (E).

### Claim 4 (depends on 1)

The baking slurry composition of claim 1, wherein
the acrylic polymer (D) has a weight-average molecular weight of more than or equal to 10,000 and less than or equal to 500,000.

### Claim 5 (depends on 1)

A method for manufacturing a green sheet, the method comprising applying and drying the baking slurry composition of claim 1.

### Claim 6

A baking slurry composition for producing a green sheet, the baking slurry composition comprising:
inorganic powder (B);
a polyvinyl alcohol resin (C);
acrylic polymer (D); and
water,
the acrylic polymer (D) having a glass transition temperature higher than or equal to −50° C. and lower than or equal to 30° C. and an acid value greater than or equal to 50 mg KOH/g and less than or equal to 200 mg KOH/g,
the acrylic polymer (D) having a weight percentage of more than or equal to 0.1 and less than or equal to 5.0 relative to a total solid content of the baking slurry composition, and
the polyvinyl alcohol resin (C) containing a nonionic polyvinyl alcohol resin (C1) and an anionic polyvinyl alcohol resin (C2).

### Claim 7 (depends on 6)

The baking slurry composition of claim 6, wherein
the anionic polyvinyl alcohol resin (C2) contains a polyvinyl alcohol resin (C21) having a carboxyl group.

### Claim 8 (depends on 7)

The baking slurry composition of claim 7, wherein
the nonionic polyvinyl alcohol resin (C1) contains a nonionic polyvinyl alcohol resin (C11) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, and a nonionic polyvinyl alcohol resin (C12) having a saponification degree of more than or equal to 60 mol % and less than 85 mol %.

### Claim 9 (depends on 8)

The baking slurry composition of claim 8, wherein
the nonionic polyvinyl alcohol resin (C1) contains a nonionic polyvinyl alcohol resin (C11) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, and
the polyvinyl alcohol resin (C21) contains an anionic polyvinyl alcohol resin (C211) having a saponification degree of more than or equal to 60 mol % and less than 85 mol % and a carboxyl group.

### Claim 10 (depends on 6)

A method for manufacturing a green sheet, the method comprising applying and drying the baking slurry composition of claim 6.