Sheet and laminate

Patent metadata

Field	Value
Publication number	US-2018282946-A1
Application number	US-201615764602-A
Country	US
Kind code	A1
Filing date	Sep 29, 2016
Priority date	Sep 30, 2015
Publication date	Oct 4, 2018
Grant date	—

Abstract

An object of the present invention is to provide an ultrafine fiber-containing sheet, regarding which wrinkles and/or cracks generated upon sheet formation are suppressed, and a laminate thereof. According to the present invention, provided are: a sheet comprising ultrafine fibers having an ionic substituent and an organic ion that is a counterion of the ionic substituent, wherein the content of the organic ion is 0.40 mmol/g or less; and a laminate comprising the sheet and at least one of an inorganic layer and an organic layer formed on at least one side of the sheet.

First claim

1 .- 14 . (canceled)

15 . A sheet comprising
ultrafine fibers having an ionic substituent, and an organic ion that is a counterion of the ionic substituent, wherein the content of the organic ion is 0.40 mmol/g or less.

16 . The sheet according to claim 15 , which has a haze of 40% or less.

17 . The sheet according to claim 15 , which has a density of 1.0 g/cm 3 or more.

18 . The sheet according to claim 15 , wherein the organic ion contains 4 or more carbon atoms.

19 . The sheet according to claim 15 , wherein the content of the ionic substituent is 0.5 mmol/g or less based on the ultrafine fibers.

20 . The sheet according to claim 15 , which has an elastic modulus in tension of 4.0 GPa or more at a temperature of 23° C. at a relative humidity of 50%.

21 . A laminate comprising
the sheet according to claim 15 , and at least one of an inorganic layer and an organic layer formed at least one side of the sheet.

22 . A sheet comprising
ultrafine fibers having an ionic substituent, and an organic onium ion that is a counterion of the ionic substituent, wherein the content of the organic onium ion is 0.10 mmol/g or more, wherein the content of a phosphoric acid group and a phosphoric acid group-derived substituent is 0.1 mmol/g or more based on the ultrafine fibers, and the ultrafine fibers do not comprise a carboxy group and a carboxy group-derived substituent, or the content of the carboxy group and the carboxy group-derived substituent is less than 0.1 mmol/g based on the ultrafine fibers.

23 . The sheet according to claim 22 , wherein the organic onium ion contains 4 or more carbon atoms.

24 . The sheet according to claim 22 , which has a density of 1.0 g/cm 3 or more.

25 . The sheet according to claim 22 , which has an elastic modulus in tension of 3.5 GPa or less at a temperature of 23° C. at a relative humidity of 50%.

26 . The sheet according to claim 22 , which has a pencil hardness of F or lower.

27 . The sheet according to claim 22 , which has a yellowness change (ΔYI) of 70 or less.

28 . A laminate comprising
the sheet according to claim 22 , and at least one of an inorganic layer and an organic layer formed at least one side of the sheet.

Assignees

• Oji Holdings Corp

Inventors

• FUSHIMI Hayato
• Banzashi Go

Classifications

• D21H11/18 Primary

  Highly hydrated, swollen or fibrillatable fibres · CPC title

• D21H17/10

  Phosphorus-containing compounds · CPC title

• D21H17/12

  Organo-metallic compounds · CPC title

• D21H11/20 Primary

  Chemically or biochemically modified fibres · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title