Liquid composition, shaped article, and shaped article production method

Patent metadata

Field	Value
Publication number	US-9796790-B2
Application number	US-201514939780-A
Country	US
Kind code	B2
Filing date	Nov 12, 2015
Priority date	Nov 21, 2014
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A liquid composition contains a cellulosic material constituted by a material containing at least one of cellulose and a cellulose derivative, and an ionic liquid having a functional group with reactivity. It is preferred that the ionic liquid has an imidazolium salt structure. It is also preferred that the functional group with reactivity contains a carbon-carbon double bond.

First claim

What is claimed is:

1. A liquid composition comprising:
a cellulosic material comprising a cellulose derivative including hydroxyl groups, with at least a part of the hydroxyl groups of the cellulose derivative being substituted with both (i) an imidazole-based ionic moiety and (ii) a liquid crystalline functional group represented by either formula (10) or (11) such that the cellulose derivative has the following structure

wherein l, m, and n are each independently an integer of 2 or more, R 1 , R 2 , R 4 , and R 5 are each independently a hydrogen atom or a acetyl group, R 8 is represented by formula (9) below and R 9 is either formula (10) or (11), below:

wherein in formula (9), k is an integer of 1 or more, and R 7 is a hydrogen atom or an alkyl group; wherein in formula (10) and (11), j is an integer of 1 or more and R 6 is a hydrogen atom or an alkyl group; and
an ionic liquid having a reactive functional group.

2. The liquid composition according to claim 1 , wherein the ionic liquid comprises an imidazolium salt.

3. The liquid composition according to claim 1 , wherein the reactive functional group contains a carbon-carbon double bond.

4. The liquid composition according to claim 3 , wherein the reactive functional group is a (meth)acryloyl group.

5. The liquid composition according to claim 1 , wherein the liquid composition satisfies the following relationship:
1≦ Xc/Xs≦ 40,

where Xs is the content of the ionic liquid in mass % and Xc is the content of the cellulosic material in mass %.

6. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 1 .

7. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 2 .

8. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 3 .

9. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 4 .

10. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 5 .

11. A method for producing a shaped article, the method comprising:
forming a layer using the liquid composition according to claim 1 a plurality of times and stacking the layers, wherein the liquid composition is applied to a region where a three-dimensionally shaped article is to be formed; and
following stacking the layers, allowing a chemical reaction involving a functional group of the liquid composition to proceed.

12. The method according to claim 11 , wherein the liquid composition is applied by an inkjet method.

13. The liquid composition according to claim 1 , wherein the ionic liquid contains an imidazole group.

14. The liquid composition according to claim 1 , wherein the liquid composition satisfies the following relationship:
1.5≦ Xc/Xs≦ 2.5,

where Xs is the content of the ionic liquid in mass % and Xc is the content of the cellulosic material in mass %.

15. A shaped article, wherein the shaped article is produced using the liquid composition according to claim 13 .

Assignees

• Seiko Epson Corp

Inventors

• Otake Toshihiro

Classifications

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• C09D101/10

  Esters of organic acids (of both organic acids and inorganic acids C09D101/20) · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• C08B3/10 Primary

  with five or more carbon-atoms, {e.g. valerate} · CPC title

• C08B3/14

  in which the organic acid residue contains substituents, e.g. NH2, Cl · CPC title