Carbon-fiber-precursor acrylic fiber bundle with oil composition adhering thereto, process for producing the same, oil composition for carbon-fiber-precursor acrylic fiber, and oil composition dispersion for carbon-fiber-precursor acrylic fiber

Patent metadata

Field	Value
Publication number	US-9752012-B2
Application number	US-201114002263-A
Country	US
Kind code	B2
Filing date	Mar 1, 2011
Priority date	Mar 1, 2011
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

The present invention relates to a carbon-fiber-precursor acrylic fiber bundle with an oil composition adhering thereto, wherein the oil composition comprises an amino-modified silicone, an aromatic ester compound (1) having a structure represented by the following formula (1), and an aromatic ester compound (2) having a structure represented by the following formula (2), the amino-modified silicone, the aromatic ester compound (1), and the aromatic ester compound (2) meet the specific requirements, the process for producing the same, an oil composition carbon-fiber-precursor acrylic fiber, and an oil composition dispersion for carbon-fiber-precursor acrylic fiber.

First claim

The invention claimed is:

1. A carbon-fiber-precursor acrylic fiber bundle with an oil composition adhering thereto, wherein:
the oil composition comprises an amino-modified silicone, an aromatic ester compound (1) having a structure of formula (1):

and an aromatic ester compound (2) having a structure of formula (2):

an adhesion amount of the amino-modified silicone is from 0.01 to 0.2% by mass relative to a mass of the dry fiber,
a total adhesion amount of the aromatic ester compound (1) and the aromatic ester compound (2) is from 0.4 to 1.2% by mass relative to the mass of the dry fiber,
a ratio of the adhesion amounts of the aromatic ester compound (2) to the aromatic ester compound (1) is from 0.25 to 6.5,
R 1 and R 2 are each independently a hydrocarbon group having 7 to 21 carbon atoms,
m and n are each independently an integer of from 1 to 5, and
R 3 , R 4 , and R 5 are each independently a hydrocarbon group having 8 to 10 carbon atoms.

2. The fiber bundle according to claim 1 , wherein the amino-modified silicone is an amino-modified silicone having a structure of formula (3):

wherein o is an integer of from 5 to 300, and p is an integer of from 1 to 5.

3. The fiber bundle according to claim 1 , wherein the amino-modified silicone has a kinematic viscosity of from 50 to 500 mm 2 /s at 25° C.

4. The fiber bundle according to claim 1 , wherein a block copolymerization polyether comprising a propylene oxide unit and an ethylene oxide unit and having a structure of formula (4):
H—O C 2 H 4 O x C 3 H 6 O y C 2 H 4 O z —H  (4)

is further adhered in a quantity of from 5 to 70 parts by mass relative to 100 parts by mass representing a total adhesion amount of the aromatic ester compound (1), the aromatic ester compound (2), and the amino-modified silicone to the dry fiber,
wherein x, y, and z are each independently an integer of from 1 to 200.

5. The fiber bundle according to claim 1 , wherein the amino-modified silicone has a kinematic viscosity of from 50 to 300 mm 2 /s at 25° C.

6. An oil composition comprising an amino-modified silicone, an aromatic ester compound (1) having a structure of formula (1):

and an aromatic ester compound (2) having a structure of formula (2):

wherein:
a content of the amino-modified silicone is from 1 to 25 parts by mass relative to 100 parts by mass of a total quantity of the aromatic ester compound (1) and the aromatic ester compound (2), and
a mass ratio of the aromatic ester compound (2) to the aromatic ester compound (1) is from 0.25 to 6.5,
R 1 and R 2 are each independently a hydrocarbon group having 7 to 21 carbon atoms,
m and n are each independently an integer of from 1 to 5, and
R 3 , R 4 , and R 5 are each independently a hydrocarbon group having 8 to 10 carbon atoms.

7. The oil composition according to claim 6 , wherein the amino-modified silicone is an amino-modified silicone having a structure of formula (3):

wherein o is an integer of from 5 to 300, and p is an integer of from 1 to 5.

8. The oil composition according to claim 6 , wherein the amino-modified silicone has a kinematic viscosity of from 50 to 500 mm 2 /s at 25° C.

9. The oil composition according to claim 6 , further comprising a block copolymerization polyether comprising a propylene oxide unit and an ethylene oxide unit and having a structure of formula (4):
H—O C 2 H 4 O x C 3 H 6 O y C 2 H 4 O z —H  (4)

in a quantity of from 10 to 50 parts by mass relative to 100 parts by mass of a total quantity of the amino-modified silicone, the aromatic ester compound (1), and the aromatic ester compound (2),
wherein x, y, and z are each independently an integer of from 1 to 200.

10. An oil composition dispersion, wherein the oil composition according to claim 6 is dispersed in water or a solvent.

11. The oil composition dispersion according to claim 10 , wherein the oil composition forms micelles with an average particle size of from 0.01 to 0.50 μm.

12. A process for producing a carbon-fiber-precursor acrylic fiber bundle with an oil composition adhering thereto, comprising:
applying an oil composition dispersion obtained by dispersing the oil composition according to claim 6 in water or a solvent, forming micelles with an average particle size of from 0.01 to 0.50, to a carbon-fiber-precursor acrylic fiber bundle in a water-swelled state, and
performing drying densification of the carbon-fiber-precursor acrylic fiber bundle.

13. The oil composition according to claim 6 , wherein the amino-modified silicone has a kinematic viscosity of from 50 to 300 mm 2 /s at 25° C.

Assignees

• Aso Hiromi
• Mitsubishi Chem Corp

Inventors

• Aso Hiromi

Classifications

• B05D3/0254

  After-treatment · CPC title

• C08K5/12 Primary

  of cyclic polycarboxylic acids · CPC title

• D06M13/224

  Esters of carboxylic acids; Esters of carbonic acid · CPC title

• D01F11/06

  of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• D01F6/18 Primary

  from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide · CPC title