Resin composition, inorganic fine particle-dispersed slurry composition, inorganic fine particle-dispersed sheet, method for manufacturing all-solid-state battery, and method for manufacturing laminated ceramic capacitor

Patent metadata

Field	Value
Publication number	US-11649308-B2
Application number	US-201816621005-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Jun 23, 2017
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A resin composition which has excellent decomposability at low temperature, can provide a molded article having high strength, and enables an increase in the number of layers and thinning so as to enable production of an all-solid-state battery and a ceramic laminate having excellent properties. An inorganic fine particle-dispersed slurry composition containing the resin composition, an inorganic fine particle-dispersed sheet, a method for producing an all-solid-state battery, and a method for producing a multilayer ceramic capacitor. A resin composition containing a (meth)acrylic resin, the (meth)acrylic resin containing 20 to 70% by weight in total of a segment derived from methyl methacrylate and a segment derived from isobutyl methacrylate, 1 to 10% by weight of a segment derived from a glycidyl group-containing (meth)acrylate, and 5 to 40% by weight of a segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more.

First claim

The invention claimed is:

1. A resin composition comprising
a (meth)acrylic resin having a glass transition temperature of 40° C. or higher and 60° C. or lower,
wherein the (meth)acrylic resin comprises a segment derived from methyl methacrylate, a segment derived from isobutyl methacrylate, a segment derived from a glycidyl group-containing (meth)acrylate, and a segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more,
a total amount of the segment derived from methyl methacrylate and the segment derived from isobutyl methacrylate is 55 to 70% by weight,
an amount of the segment derived from a glycidyl group-containing (meth)acrylate is 1 to 10% by weight,
an amount of the segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more is 15 to 40% by weight,
the (meth)acrylic resin has a weight average molecular weight (Mw) of 100,000 to 3,000,000,
a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of the (meth)acrylic resin is 2 or higher and 8 or lower, and
the (meth)acrylic resin is obtained by copolymerizing a monomer mixture containing 55 to 70% by weight in total of methyl methacrylate and isobutyl methacrylate, 1 to 10 by weight of a glycidyl group-containing (meth)acrylate and 15 to 40% by weight of a (meth)acrylate containing an ester substituent having a carbon number of 8 or more.

2. The resin composition according to claim 1 ,
wherein in the (meth)acrylate containing an ester substituent having a carbon number of 8 or more, the ester substituent has a carbon number of 8 to 20 and has a branched chain structure.

3. The resin composition according to claim 1 ,
wherein the (meth)acrylate containing an ester substituent having a carbon number of 8 or more is a (meth)acrylate containing a branched alkyl group having a carbon number of 8 to 20 or a polyalkylene glycol methacrylate having a branched alkylene glycol structure wherein the total number of carbon atoms in the ester substituent is 8 or more.

4. The resin composition according to claim 1 ,
wherein a weight ratio of the amount of the segment derived from methyl methacrylate to the amount of the segment derived from isobutyl methacrylate in the (meth)acrylic resin is 15:85 to 95:5.

5. The resin composition according to claim 1 ,
wherein the (meth)acrylic resin molded into a sheet form having a thickness of 20 μm has a maximum stress of 20 N/mm 2 or more in a tensile test.

6. The resin composition according to claim 1 ,
wherein the amount of the segment derived from a glycidyl group-containing (meth)acrylate is 2 to 10% by weight.

7. An inorganic fine particle-dispersed slurry composition comprising:
the resin composition according to claim 1 ;
inorganic fine particles;
an organic solvent; and
a plasticizer.

8. The inorganic fine particle-dispersed slurry composition according to claim 7 ,
wherein the inorganic fine particles comprise lithium or titanium.

9. The inorganic fine particle-dispersed slurry composition according to claim 7 ,
wherein the plasticizer comprises: a component derived from adipic acid, triethylene glycol, or citric acid; and an alkyl group having a carbon number of 4 or more, and
the plasticizer has a carbon:oxygen ratio of 5:1 to 3:1.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Yamauchi Kenji
• Matsukubo Tatsuya
• Nakano Shinya
• Otsuka Jo

Classifications

• C08F220/286

  and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate · CPC title

• C08F220/1818

  C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate · CPC title

• C08K3/40

  Glass · CPC title

• C08K3/00

  Use of inorganic substances as compounding ingredients · CPC title

• C08F220/1804

  C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate · CPC title