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-2020199345-A1
Application number	US-201816621005-A
Country	US
Kind code	A1
Filing date	Jun 21, 2018
Priority date	Jun 23, 2017
Publication date	Jun 25, 2020
Grant date	—

Abstract

The present invention provides 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 (e.g., a multilayer ceramic capacitor) having excellent properties. The present invention also relates to 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. The present invention relates to 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

1 . A resin composition comprising
a (meth)acrylic resin, the (meth)acrylic resin comprising 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.

2 . The resin composition according to claim 1 ,
wherein the (meth)acrylic resin has a glass transition temperature of 20° C. or higher and 60° C. or lower.

3 . The resin composition according to claim 1 ,
wherein the (meth)acrylic resin has a weight average molecular weight (Mw) of 100,000 to 3,000,000.

4 . The resin composition according to claim 1 ,
wherein a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the (meth)acrylic resin is 2 or higher and 8 or lower.

5 . The resin composition according to claim 1 ,
wherein the (meth)acrylic resin comprises 20 to 50% by weight of the segment derived from methyl methacrylate, 10 to 39% by weight in total of a segment derived from at least one selected from the group consisting of 2-ethylhexyl methacrylate, isodecyl methacrylate, isononyl methacrylate, isostearyl methacrylate, polyethylene glycol methacrylate containing an ethoxy or ethylhexyl group at an end, and polypropylene glycol methacrylate containing an ethoxy or ethylhexyl group at an end, and 1 to 10% by weight of the segment derived from a glycidyl group-containing (meth)acrylate.

6 . The resin composition according to claim 1 ,
wherein the (meth)acrylic resin comprises the segment derived from methyl methacrylate, the segment derived from isobutyl methacrylate, the segment derived from a glycidyl group-containing (meth)acrylate, and the segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more, the total amount of the segment derived from methyl methacrylate and the segment derived from isobutyl methacrylate is 50 to 70% by weight, the amount of the segment derived from a glycidyl group-containing (meth)acrylate is 1 to 10% by weight, the 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 glass transition temperature of 30° C. or higher and lower than 60° C., the (meth)acrylic resin has a weight average molecular weight (Mw) of 100,000 to 3,000,000, and the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the (meth)acrylic resin is 2 or higher and 8 or lower.

7 . The resin composition according to claim 6 ,
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.

8 . The resin composition according to claim 7 ,
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.

9 . The resin composition according to claim 6 ,
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.

10 . The resin composition according to claim 1 ,
wherein the (meth)acrylic resin comprises a segment derived from n-butyl methacrylate and/or a segment derived from ethyl methacrylate, the segment derived from isobutyl methacrylate, the segment derived from a glycidyl group-containing (meth)acrylate, and the segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more, the total amount of the segment derived from n-butyl methacrylate, the segment derived from ethyl methacrylate, and the segment derived from isobutyl methacrylate is 30 to 92% by weight, the amount of the segment derived from a glycidyl group-containing (meth)acrylate is 1 to 10% by weight, the amount of the segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more is 5 to 30% by weight, the (meth)acrylic resin has a glass transition temperature of 35° C. or higher and lower than 60° C., and the (meth)acrylic resin has a weight average molecular weight (Mw) of 100,000 to 3,000,000.

11 . The resin composition according to claim 10 ,
wherein the amount of the segment derived from isobutyl methacrylate in the (meth)acrylic resin is 50 to 65% by weight.

12 . The resin composition according to claim 10 ,
wherein a weight ratio of the amount of the segment derived from n-butyl methacrylate and/or the segment derived from ethyl methacrylate to the amount of the segment derived from isobutyl methacrylate in the (meth)acrylic resin is 7:93 to 60:40.

13 . The resin composition according to claim 10 ,
wherein the (meth)acrylate containing an ester substituent having a carbon number of 8 or more is a polyalkylene glycol (meth)acrylate containing at least one of a propylene glycol unit or a butylene glycol unit.

14 . 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.

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

16 . The inorganic fine particle-dispersed slurry composition according to claim 15 ,
wherein the inorganic fine particles comprise lithium or titanium.

17 . The inorganic fine particle-dispersed slurry composition according to claim 15 ,
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.

18 . An inorganic fine particle-dispersed sheet formed using the inorganic fine particle-dispersed slurry composition according to claim 15 .

19 . A method for producing an all-solid-state battery, comprising
using the inorganic fine particle-dispersed sheet according to claim 18 .

20 . A method for producing a multilayer ceramic capacitor, comprising
using the inorganic fine particle-dispersed sheet according to claim 18 .

Assignees

• Sekisui Chemical Co Ltd

Inventors

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

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/0562

  Solid materials · CPC title

• C08L2203/30

  used for thermoforming · CPC title

• C08L33/068

  containing glycidyl groups · CPC title