Photosensitive fiber and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-2016266492-A1
Application number	US-201415030049-A
Country	US
Kind code	A1
Filing date	Oct 17, 2014
Priority date	Oct 17, 2013
Publication date	Sep 15, 2016
Grant date	—

Abstract

The invention provides a fiber containing (A) a polymer compound containing a structural unit having, in a side chain, at least one kind of organic group selected from a hydroxy group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, and (B) a photoacid generator.

First claim

1 . A fiber comprising
(A) a polymer compound comprising a structural unit having, in a side chain, at least one kind of organic group selected from a hydroxy group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, and (B) a photoacid generator.

2 . The fiber according to claim 1 , wherein the above-mentioned (A) polymer compound comprises (A1) a polymer compound comprising a structural unit represented by the formula (1):

wherein
R 1 is a hydrogen atom or a methyl group,
Q 1 is an ester bond or an amide bond, and
R 2 is an alkyl group having 1-10 carbon atoms or an aromatic hydrocarbon group having 6-10 carbon atoms, wherein at least one hydrogen atom is substituted by a hydroxy group, a hydroxymethyl group or an alkoxymethyl group having 1-5 carbon atoms.

3 . The fiber according to claim 2 , wherein the above-mentioned (A1) polymer compound further comprises a structural unit represented by the formula (2):

wherein
R 3 is a hydrogen atom or a methyl group, and
R 4 and R 5 are the same or different and each is a hydrogen atom or an alkyl group having 1-4 carbon atoms optionally substituted by a hydroxy group or a carboxy group.

4 . The fiber according to claim 2 , wherein the above-mentioned polymer compound (A1) has a weight average molecular weight of 1,000-1,000,000.

5 . The fiber according to claim 1 , wherein the above-mentioned (A) polymer compound is (A2) a natural polymer per se or comprises (A2) a natural polymer.

6 . The fiber according to claim 5 , wherein the above-mentioned (A2) natural polymer comprises at least one kind selected from dextrin and a derivative thereof.

7 . The fiber according to claim 5 , wherein the above-mentioned (A2) natural polymer comprises a biopolymer.

8 . The fiber according to claim 1 , further comprising (C) a crosslinking agent.

9 . The fiber according to claim 1 , which is a photosensitive fiber.

10 . The fiber according to claim 1 , comprising a nano fiber and/or a micro fiber.

11 . A composition for producing a photosensitive fiber, comprising
(A) a polymer compound comprising a structural unit having, in a side chain, at least one kind of organic group selected from a hydroxy group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, (B) a photoacid generator, and (D) a solvent.

12 . The composition according to claim 11 , wherein the above-mentioned (A) polymer compound comprises (A1) a polymer compound containing a structural unit represented by the formula (1):

wherein
R 1 is a hydrogen atom or a methyl group,
Q 1 is an ester bond or an amide bond, and
R 2 is an alkyl group having 1-10 carbon atoms or an aromatic hydrocarbon group having 6-10 carbon atoms, wherein at least one hydrogen atom is substituted by a hydroxy group, a hydroxymethyl group or an alkoxymethyl group having 1-5 carbon atoms.

13 . The composition according to claim 12 , wherein the above-mentioned (A1) polymer compound further comprises a structural unit represented by the formula (2):

wherein
R 3 is a hydrogen atom or a methyl group, and
R 4 and R 5 are the same or different and each is a hydrogen atom or an alkyl group having 1-4 carbon atoms optionally substituted by a hydroxy group or a carboxy group.

14 . The composition according to claim 12 , wherein the above-mentioned polymer compound (A1) has a weight average molecular weight of 1,000-1,000,000.

15 . The composition according to claim 11 , wherein the above-mentioned (A) polymer compound is (A2) a natural polymer per se or comprises (A2) a natural polymer.

16 . The fiber according to claim 15 , wherein the above-mentioned (A2) natural polymer comprises at least one kind selected from dextrin and a derivative thereof.

17 . The fiber according to claim 15 , wherein the above-mentioned (A2) natural polymer comprises a biopolymer.

18 . The fiber according to claim 11 , further comprising (C) a crosslinking agent.

19 . The fiber according to claim 11 , wherein a content ratio of the above-mentioned (A) polymer compound is 1-90 wt %.

20 . A production method of a fiber, comprising a step of spinning the composition according to claim 11 .

21 . The method according to claim 20 , wherein the above-mentioned spinning is electrospinning.

22 . The method according to claim 20 , comprising a step of heating a spun fiber at 70-300° C.

23 . A method of forming a fiber pattern, comprising
the first step for forming a fiber layer of photosensitive fibers on a substrate, the second step for exposing the fiber layer to light via a mask, and the third step for developing the fiber layer with a developing solution.

24 . The method according to claim 23 , wherein the above-mentioned photosensitive fiber is a fiber comprising
(A) a polymer compound comprising structural unit having, in a side chain, at least one kind of organic group selected from a hydroxyl group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, and (B) a photoacid generator.

25 . The method according to claim 23 , wherein the second step comprises heating the fiber after light exposure.

26 . The method according to claim 23 , wherein the above-mentioned developing solution comprises water or an organic solvent.

27 . A fiber pattern formed using the fiber according to claim 1 .

28 . A substrate having the fiber pattern according to claim 27 on a surface thereof.

29 . A biocompatible material comprising the fiber according to claim 1 .

30 . A biocompatible material comprising the fiber patters according to claim 27 .

Assignees

• Nissan Chemical Ind Ltd
• Toyama Prefecture

Inventors

• Kishioka Takahiro
• Yokoyama Yoshiyuki

Classifications

• C08F220/56 Primary

  Acrylamide; Methacrylamide · CPC title

• D01F1/10

  Other agents for modifying properties · CPC title

• D01F6/26 Primary

  from other polymers · CPC title

• D01F2/28

  from organic cellulose esters or ethers, e.g. cellulose acetate · CPC title

• D01D5/003

  the material being a polymer solution or dispersion (D01D5/0053 takes precedence) · CPC title