WO2006002572A1

WO2006002572A1 - Synthetic fiber containing animal hair protein and its preparation

Info

Publication number: WO2006002572A1
Application number: PCT/CN2004/000711
Authority: WO
Inventors: Guanqi Li
Original assignee: Guanqi Li
Priority date: 2004-06-30
Filing date: 2004-06-30
Publication date: 2006-01-12

Abstract

The present invention discloses the fiber containing animal hair protein. Such fiber is composed of protein separated from animal hair and PVA. In the fiber, the concentration of protein is from 1% to less than 25%, or from more than 40% to 90%. The invention also discloses the process for producing such fiber. The invention not only makes the animal hair but also makes human's hair as the raw material of protein, so that it extends the resource of raw materials for producing the fiber. At the same time, the obtained fiber doesn't contain unnecessary inorganic chemical components and its production will not bring contamination.

Description

Synthetic fiber containing animal hair protein and manufacturing method thereof

The present invention relates to the field of textiles, and more particularly to a synthetic fiber containing proteins extracted from animal hair, and a method of producing such a synthetic fiber. Background technique

In the patent application No. 91109153. X, a composite fiber having a core as a core and a ruthenium protein as an outer layer is disclosed, and the inventors disclose a patent in the patent No. 99116636. Plant protein synthetic fibers and methods for their manufacture, which expand resources for fiber production. At present, the patent application No. 02115722. 7 discloses an animal hair protein regenerated fiber spinning dope and a manufacturing method thereof, which expands the raw material range for producing fibers, and can also recycle waste, but the invention application Only one spinning dope is disclosed, and the animal hair protein in the original liquid accounts for 25-40 parts. Since the cystine content of the animal hair protein is large, and the stability of cystine is poor, the spinning dope is required. The fiber is also required to have a proper spinning process to match it, and the fiber produced by the stock solution has a single use and is inferior in strength. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a fiber for animal hair protein containing a wider range of uses and to provide a method for producing the same.

The object of the present invention is achieved by the following technical solutions: A synthetic fiber containing animal hair protein, consisting of protein and polyvinyl alcohol, the protein is isolated protein extracted from animal hair, and the protein content in the fiber It is from 1% to less than 25% or from more than 40% to 90%.

The fiber has a protein content of 3% to 20%.

The protein has a protein content of 45% to 90%. The method of making the synthetic fiber is:

First extracting the isolated protein from animal hair;

Further, the isolated protein is dissolved in an aqueous solution containing sodium dodecyl sulfate or triethanolamine, the dissolution temperature is 15 ° C - 95 ° C, and the dissolution time is 1. 5 - 4 hours to prepare a protein solution;

Then, the water-washed polyvinyl alcohol is directly added to the protein solution, and they are blended and copolymerized at a temperature of 60 Torr to 98 ° C for a period of 1.5 to 4 hours, and the concentration of the protein-containing and polyvinyl alcohol is 8 %- 14% or 15%-38% spinning solution;

Add boric acid or boron to the spinning solution, adjust the viscosity, and prepare a spinning dope;

Spinning stock solution at a temperature of 50-80 ° (at room temperature, defoaming for 3-8 hours, or at a temperature of 30-40 ° C, vacuum degassing for 3-8 hours, into the spinning process, made into protein Synthetic fiber.

When extracting protein from animal hair, the animal hair should be degreased and then immersed in an acidic solution at a temperature of 20-90 ° C for 1-8 hours. Separate and purify the waste residue, adjust the isoelectric point of the leachate with alkali, and extract. Protein is separated.

After entering the spinning process, the protein synthetic fiber can be formed by a wet spinning process.

The concentration of protein and polyvinyl alcohol in the spinning solution is 15% to 38. After the spinning process, the protein synthetic fiber can also be produced by a dry-jet wet spinning process.

The concentration of protein and polyethylene glycol in the spinning solution is 20% to 38%. After the spinning process, the dry spinning process can also be used to form the protein synthetic fiber.

The present invention not only uses animal hair as a raw material for producing protein, but also uses human broken hair as a raw material for producing protein, which further expands the source of raw materials for fiber production and makes full use of waste. In the fiber of the present invention, when the content of the protein is low, since the polyvinyl alcohol content is high, and the instability of the SH-based gas-based acid is avoided, the produced fiber is not only elastic, hygroscopic, and gas permeable. Good characteristics, and good strength, can be spun into finer fibers to make the fabric softer. When the protein content is high, the fiber is made to have better elasticity and skin-friendly properties. This fiber has the natural hemp fiber permeability, is not only comfortable to wear, but also an excellent material for making artificial wigs. Inventions have opened up a broader avenue for the use of resources. When the spinning solution is prepared, the separated protein is dissolved in the near-neutral aqueous solution of triethanolamine or sodium dodecylsulfonate, and the polyvinyl alcohol is directly added to the protein solution, so that the produced fiber does not contain no Necessary inorganic chemical composition, and no pollution to the environment during the manufacturing process. detailed description

Example 1: The animal hair was degreased and then immersed in an aqueous solution having a pH of 1.5, and stirred. After 6 hours at a temperature of 70 Torr, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leaching solution was adjusted with a base to obtain a separation. Protein; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 15 ° C, the dissolution time is 4 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein. In the solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 1.5 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 14%, wherein the protein The weight ratio of dry solid to polyvinyl alcohol is 3:97; the boric acid is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is degassed under vacuum for 8 hours at a temperature of 30 ° C. Into the spinning process, a protein synthetic fiber is produced by a wet spinning process.

Example 2: The animal hair was degreased and then immersed in an aqueous solution of pH 2, and stirred. After 7 hours at a temperature of 40 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base to obtain a separation. Protein; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfonate, the dissolution temperature is 30 ° C, the dissolution time is 2 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein ^ In the solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 3.5 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 27%, wherein The dry weight ratio of protein shield and polyvinyl alcohol is 60: 40; boric acid is added to the spinning solution to adjust the viscosity to make a spinning dope; the spinning dope is allowed to defoam at a temperature of 4 G ° C under vacuum. After 4 hours, the spinning process was carried out, and the protein synthetic fiber was prepared by a wet spinning process.

Example 3: The human hair is degreased and then immersed in an aqueous solution having a pH of 2.3, and stirred. After 4 hours at a temperature of 90 ° C, the separation and purification are carried out to remove the waste residue, and the isoelectric point of the leaching solution is adjusted with a base to obtain a protein for human hair separation; the separated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, and the dissolution temperature is 60. 5小时。 The temperature is slowly increased to 98 ° C, maintaining 2. 5 hours, the temperature is slowly increased to 98 ° C, the temperature is slowly increased to 98 ° C, kept for 2.5 hours , adding soft water to adjust the concentration, to obtain a spinning solution containing 38% of protein and polyvinyl alcohol, wherein the dry weight ratio of protein to polyvinyl alcohol is 45: 55; adding boric acid to the spinning solution The viscosity is made into a spinning dope; the spinning dope is degassed at a temperature of 35 ° C under vacuum for 3 hours, and enters a spinning process to form a protein shield synthetic fiber by a wet spinning process.

Example 4: The animal hair and the human hair were degreased, and then immersed in an aqueous solution having a pH of 2.6 and stirred. After 8 hours at a temperature of 20 ° C, the separation and purification were carried out to remove the residue, and the leaching solution was adjusted with a base. The isoelectric point, the protein is separated; the separated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 50 Ό, the dissolution time is 3.8 hours, and the protein solution is prepared; The polyvinyl alcohol was directly added to the protein solution, and they were blended and copolymerized. The temperature was slowly raised to 98 ° C for 4 hours, and soft water was added thereto to adjust the concentration to obtain a protein-containing and polyvinyl alcohol concentration of 8%. a silk solution, wherein the dry weight ratio of protein to polyvinyl alcohol is 1:99; boric acid is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to stand at a temperature of 38 ° C under vacuum After defoaming for 5. 5 hours, the spinning process was carried out, and the protein synthetic fiber was prepared by a wet spinning process.

Example 5: The animal hair was degreased and then immersed in an aqueous solution of pH 3, and stirred. After 1 hour at a temperature of 98 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base to obtain a separation. Protein Shield; The isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 25 ° C, the dissolution time is 3.5 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution. , they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 2 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 33% of protein and polyvinyl alcohol, in which protein and polyvinyl alcohol were used. The dry solid weight ratio is 20: 80; adding borax to the spinning solution The final viscosity is made into a spinning dope; the spinning dope is allowed to defoam for 7 hours at a temperature of 50 ° C under normal pressure, and is subjected to a spinning process to form a protein synthetic fiber by a wet spinning process.

Example 6: The animal hair was degreased and then immersed in an aqueous solution having a pH of 1.1, and stirred. After 5 hours at a temperature of 30 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base. We have isolated protein; separating the aqueous solution containing the protein soft shield dissolved triethanolamine, dissolution temperature of 75 ° C, the dissolution time being ²⁵ hours to prepare a protein solution; the amount of pure water was added directly to the polyvinyl alcohol In the protein solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 1.8 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 20%. The weight ratio of protein shield and polyvinyl alcohol is 40: 60; Boron solution is added to the spinning solution to form a spinning dope; the spinning dope is at a temperature of 80 ° (:, under normal pressure) The foaming was carried out for 5 hours, and the spinning process was carried out to prepare a protein synthetic fiber by a wet spinning process.

Example 7: The animal hair was degreased and then immersed in an aqueous solution of pH 1 and stirred. After 3 hours at a temperature of 80 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leaching solution was used to separate. The protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 85 ° C, the dissolution time is 1.8 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution, They were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 2.8 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 15%, wherein protein and polyethylene. The dry weight ratio of alcohol is 75: 25; 'The borax is added to the spinning solution to adjust the viscosity to make the spinning dope; the spinning dope is allowed to defoam at a temperature of 65 °C for 6 hours under normal pressure. Silk process, a protein synthetic fiber is produced by a wet spinning process.

Example 8: The animal hair was degreased and then immersed in an aqueous solution having a pH of 0.5, and stirred. After 2 hours at a temperature of 60 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base. The protein is separated; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 40 ° C, and the dissolution time is 3 hours to prepare a protein solution; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution, They are blended and copolymerized, and the temperature is slowly raised to 98 °C, keeping 3 small At the same time, adding soft water to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 11%, wherein the dry weight ratio of protein to polyvinyl alcohol is 90: 10; adding borax to the spinning solution The viscosity is adjusted to prepare a spinning dope; the spinning dope is allowed to defoam for 5 hours at a temperature of 75 ° C under normal pressure, and is subjected to a spinning process to form a protein synthetic fiber by a wet spinning process.

Example 9: The animal hair was degreased and then immersed in an aqueous solution having a pH of 0.7, and stirred, and after 25 hours at a temperature of 25 Torr, the separation and purification were carried out except that the waste was removed, and the leaching solution was adjusted with alkali. The separation protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfonate, the dissolution temperature is 20 ° C, the dissolution time is 3.5 hours, and the protein solution is prepared; Vinyl alcohol was directly added to the protein solution, and they were blended and copolymerized. The temperature was slowly raised to 98 ° C for 4 hours, and soft water was added thereto to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 15%. , wherein the dry weight ratio of protein to polyvinyl alcohol is 15: 85; boric acid is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to defoam at a temperature of 30 ° C under vacuum. 7. 5 hours, into the spinning process, using a dry spray wet spinning process to make protein synthetic fibers.

Example 10: The animal hair was degreased and then immersed in an aqueous solution having a pH of 0.9, and stirred. After the temperature was 95 ° C for 1.5 hours, the separation and purification were carried out to remove the waste residue, and the alkali was used to adjust the isoelectricity of the leachate. Point, the protein is separated; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 35 ° C, the dissolution time is 4 hours, and the protein solution is prepared; the pure polyethylene is washed with a certain amount of water. The alcohol was directly added to the protein solution, and they were blended and copolymerized. The temperature was slowly raised to 98 ° C for 2 hours, and soft water was added thereto to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 16%. The dry weight ratio of protein to polyvinyl alcohol is 70: 30; boric acid is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to defoam at a temperature of 40 ° C under vacuum conditions. After hours, enter the spinning process and make a protein synthetic fiber by dry-jet wet spinning.

Example 11: The human hair was degreased and then immersed in an aqueous solution having a pH of 2.8, and stirred. After 2 hours at a temperature of 98 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leaching solution was adjusted with a base. The human hair is isolated; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, dissolved The temperature was 70 ° C, the dissolution time was 3 hours, and the protein solution was prepared. A certain amount of washed pure polyethylene glycol was directly added to the protein solution, and they were blended and copolymerized, and the temperature was slowly raised to 98 ° C, and kept at 1.5. Hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 21% of protein and polyvinyl alcohol, wherein the dry weight ratio of protein to polyvinyl alcohol was 30: 70; added to the spinning solution Boric acid adjusts the viscosity to make a spinning dope; the spinning dope is degassed at a temperature of 35 ° C under vacuum for 6.5 hours, enters the spinning process, and is made into a protein synthetic fiber by a dry-jet wet spinning process.

Example 12: After the animal hair and the human hair were degreased, they were immersed in an aqueous solution of pH 3 and stirred, and after 3 hours at a temperature of 75 ° C, the separation and purification were carried out to remove the waste residue, and the alkali leaching solution was adjusted. The electric point is obtained by separating the protein shield; the separated protein is dissolved in a soft aqueous solution containing sodium dodecylsulfonate, the dissolution temperature is 80 ° C, the dissolution time is 1.5 hours, and the protein solution is prepared; The polyvinyl alcohol was directly added to the protein solution, and they were blended and copolymerized. The temperature was slowly raised to 98 ° C for 3 hours, and soft water was added thereto to adjust the concentration to obtain a spinning concentration of 25% containing protein and polyvinyl alcohol. Solution, wherein the dry weight ratio of protein to polyethylene glycol is 12: 88; adding boric acid to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to stand at a temperature of 33 ° C under vacuum After defoaming for 3.5 hours, the spinning process was carried out, and the protein synthetic fiber was prepared by a dry-jet wet spinning process.

Example 13: The animal hair was degreased and then immersed in an aqueous solution of pH 1.3, and stirred. After 2.5 hours at a temperature of 85 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base to obtain a separation. Protein; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 55 ° C, the dissolution time is 2 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution, so that They were blended and copolymerized, and the temperature was slowly raised to 98 Torr for 2.5 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 29%, wherein the dry weight of protein and polyvinyl alcohol The weight ratio is 80: 20; borax is added to the spinning solution to adjust the viscosity to make a spinning dope; the spinning dope is allowed to defoam for 8 hours at a temperature of 5 G ° (at normal pressure, into the spinning process, with dry spray) The wet spinning process produces protein synthetic fibers. Example 14: The animal hair was degreased and then immersed in an aqueous solution having a pH of 1.8, and stirred, and after 5 hours at a temperature of 55 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectricity of the reduced leaching solution was used. Point, the protein is separated; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 45 ° C, the dissolution time is 3.2 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added In the protein solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 1.8 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 32% of protein and polyvinyl alcohol. The dry weight ratio of protein to polyvinyl alcohol is 55: 45; borax is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to defoam at a temperature of 80 ° C under normal pressure. After 5 hours, enter the spinning process and make a protein synthetic fiber by dry-jet wet spinning.

Example 15: The animal hair was degreased and then immersed in an aqueous solution having a pH of 2.1, and stirred, and after 6 hours at a temperature of 35 ° C, the separation and purification were carried out to remove the waste residue, and the alkali was used to adjust the isoelectricity of the leachate. Point, the protein is separated; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 65 ° C, the dissolution time is 2.5 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added In the protein solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 3 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 35%, in which protein and The sufficiency of the sulphide is 5. 5 hours. The spinning solution is placed at a temperature of 65 ° C. , into the spinning process, using dry-jet wet spinning process to make protein synthetic fibers.

Example: The animal hair was degreased and then immersed in an aqueous solution having a pH of 2.5, and stirred. After 5 hours at a temperature of 45 ° C, the separation and purification were carried out to remove the waste residue, and the alkali was used to adjust the isoelectricity of the leachate. Point, the protein is separated; the separated protein shield is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 15 ° C, the dissolution time is 3 hours, and the protein solution is prepared; a certain amount of water is washed. The pure polyvinyl alcohol is washed. Directly added to the protein solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 2.8 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 38% of protein and polyvinyl alcohol. , wherein the dry weight ratio of protein to polyvinyl alcohol is 7:93; boron is added to the spinning solution The sand is adjusted to a viscosity to prepare a spinning dope; the spinning dope is allowed to defoam for 3 hours at a temperature of 75 ° C under normal pressure, and is subjected to a spinning process to form a protein synthetic fiber by a wet spinning process.

Example 17: The animal hair was degreased and then immersed in an aqueous solution having a pH of 1.5, and stirred. After 6 hours at a temperature of 70 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base. The protein is separated; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulphate, the dissolution temperature is 15 ° C, the dissolution time is 4 hours, and a protein solution is prepared; a certain amount of water is washed directly with the pure polyvinyl alcohol. Adding to the protein solution, blending and copolymerizing them, the temperature is slowly raised to 98 ° C, and kept for 3.5 hours, during which soft water is added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 20%. The dry weight ratio of protein to polyvinyl alcohol is 85: 15; boric acid is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to defoam at a temperature of 40 ° C under vacuum conditions. 5 hours, into the spinning process, using the dry spinning process to make protein synthetic fibers.

Example 18: Degrease the animal hair, and then immersed in an aqueous solution of pH 2, and stirred. After 7 hours at a temperature of 40 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base to obtain a separation. Protein; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 30 ° C, the dissolution time is 2 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein In the solution, they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 4 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 38% of protein and polyvinyl alcohol, in which protein and poly 5小时,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Into the spinning process, the protein synthesis fiber is made by a dry spinning process.

Example 19: The human hair was degreased and then immersed in an aqueous solution having a pH of 2.3, and stirred. After 4 hours at a temperature of 90 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base. The human protein is separated into a protein; the isolated protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 60 ° C, the dissolution time is 1.5 hours, and the protein solution is prepared; Polyvinyl alcohol is directly added to the protein solution, and they are blended and copolymerized, and the temperature is slowly raised to 98 ° C. Hold for 3 hours, add soft water to adjust the concentration, to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 34%, wherein the dry weight ratio of protein to polyvinyl alcohol is 50: 50; into the spinning solution The boric acid was added to adjust the viscosity to prepare a spinning dope; the spinning dope was allowed to defoam for 4 hours under the condition of a temperature of 34 ° C under vacuum, and the spinning process was carried out, and the protein synthesis was carried out by a dry spinning process.

Example 20: After the animal hair and the human hair were degreased, they were immersed in an aqueous solution having a pH of 2.6 and stirred. After 8 hours at a temperature of 20 Torr, the separation and purification were carried out to remove the waste residue, and the leaching solution was adjusted with a base. The protein is separated into a protein; the dissolved protein is dissolved in a soft aqueous solution containing sodium dodecyl sulfate, the dissolution temperature is 50 ° C, the dissolution time is 3.8 hours, and the protein solution is prepared; The polyvinyl alcohol was directly added to the protein solution, and they were blended and copolymerized. The temperature was slowly raised to 98 ° C for 1.5 hours, and soft water was added thereto to adjust the concentration to obtain a protein-containing and polyvinyl alcohol concentration of 31%. The spinning solution, wherein the dry weight ratio of protein to polyvinyl alcohol is 65: 35; adding boric acid to the spinning solution to adjust the viscosity to prepare a spinning dope; spinning dope at a temperature of 30 ° C under vacuum After standing defoaming for 5. 5 hours, the spinning process was carried out, and the protein shield synthetic fiber was prepared by a dry spinning process.

Example 21: The animal hair was degreased and then immersed in an aqueous solution of pH 3, and stirred. After 1 hour at a temperature of 98 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the immersion liquid was separated. The protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 25 ° C, the dissolution time is 3.5 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution, They were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 2 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 36%, wherein protein and polyvinyl alcohol were used. The dry weight ratio is 17: 83; borax is added to the spinning solution to adjust the viscosity to make a spinning dope; the spinning dope is allowed to defoam for 5 hours at a temperature of 80 ° C under normal pressure, and enters the spinning process. The protein synthetic fiber is made by a dry spinning process.

Example 22: The animal hair was degreased and then immersed in an aqueous solution having a pH of 1.1, and stirred. After 5 hours at a temperature of 30 ° C, the separation and purification were carried out to remove the waste sputum, and the isoelectric point of the leaching solution was adjusted with alkali. , The protein is separated; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, and the dissolution temperature is

75 ° C, dissolution time of 2.5 hours, made into a protein solution; a certain amount of washed pure polyvinyl alcohol was directly added to the protein solution, so that they were blended copolymerization, the temperature slowly rose to 98 ° C, maintaining 3. 2 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing 23% of protein and polyvinyl alcohol, wherein the dry weight ratio of protein to polyvinyl alcohol was 43: 57; added to the spinning solution Borax adjusts the viscosity to make a spinning dope; the spinning dope is allowed to defoam for 3 hours at a temperature of 7 Q ° C under normal pressure, and enters a spinning process to form a protein shield synthetic fiber by a dry spinning process.

Example 23: Degrease the animal hair, and then immersed in an aqueous solution of pH 1 and stirred. After 3 hours at a temperature of 80 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leachate was adjusted with a base to obtain a separation. Protein; the isolated protein is dissolved in a soft aqueous solution containing triethanolamine, the dissolution temperature is 85 ° C, the dissolution time is 1, 8 hours, and the protein solution is prepared; a certain amount of washed pure polyvinyl alcohol is directly added to the protein solution , they were blended and copolymerized, the temperature was slowly raised to 98 ° C, and maintained for 2.5 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 26%, in which protein and poly The dry weight ratio of vinyl alcohol is 38: 62; boron is added to the spinning solution to adjust the viscosity to prepare a spinning dope; the spinning dope is allowed to defoam for 8 hours at a temperature of 60 ° C under normal pressure. Spinning process, using a dry spinning process to make protein synthetic fibers.

Example 24: The animal hair was degreased and then immersed in an aqueous solution having a pH of 0.5, and stirred. After 2 hours at a temperature of 60 ° C, the separation and purification were carried out to remove the waste residue, and the isoelectric point of the leaching solution was adjusted with a base. Separating the protein shield; dissolving the isolated protein in a soft aqueous solution containing triethanolamine, dissolving at a temperature of 40 ° C, and dissolving for 3 hours to form a protein solution; adding a certain amount of washed pure polyvinyl alcohol directly to the protein solution , they were blended and copolymerized, and the temperature was slowly raised to 98 ° C for 3 hours, during which soft water was added to adjust the concentration to obtain a spinning solution containing protein and polyvinyl alcohol at a concentration of 34%, wherein protein and polyvinyl alcohol The dry weight ratio is 28: 72; borax is added to the spinning solution to adjust the viscosity to make a spinning dope; the spinning dope is allowed to defoam at a temperature of 50 ° C under normal pressure for 6 hours, and enters the spinning process. , a protein spinning synthetic fiber is produced by a dry spinning process. The spinning process in the spinning process mentioned in the present invention is a prior art, and the inventors of the present invention are disclosed in the patent application file of the Chinese Patent No. 99116636.1 or 03111181.4 or 03111737. The process flow and parameters are not described in detail here.

Claims

Rights request

A synthetic fiber containing animal hair protein, comprising a protein and a polyvinyl alcohol, the protein being an isolated protein extracted from animal hair, characterized in that: the protein content of the fiber is from 1% to less than 25 % or from more than 40% to 90%.

The protein synthetic fiber according to claim 1, wherein the fiber has a protein content of from 3% to 20%. '

The protein synthetic fiber according to claim 1, wherein the fiber has a protein content of 45 ° /. - 90%.

A method of producing a synthetic fiber according to claim 1 or 2 or 3, characterized by: a. extracting and separating proteins from animal hair;

b, the isolated protein is dissolved in an aqueous solution containing sodium dodecyl sulfonate or triethanolamine, the dissolution temperature is 15 ° C -95 ° C, the dissolution time is 1.5-4 hours, and the protein solution is prepared;

The liquid-containing polyvinyl alcohol is added to the protein solution, and the mixture is copolymerized at a temperature of from 60 ° C to 98 ° C for a period of time of 1.5 to 4 hours to obtain a protein and a polyvinyl alcohol. The concentration is 8% - 14% or 15% - 38 ° /. Spinning solution;

d, adding boric acid or boron to the spinning solution to form a spinning dope;

e. Spinning stock solution is allowed to defoam for 3-8 hours at a temperature of 50-8 G °C under normal pressure, or at a temperature of 30-40, vacuum degassing for 3-8 hours, and then into the spinning process. Protein-forming synthetic fibers.

5. The method according to claim 4, wherein in the step a, the animal hair is degreased and immersed in an acidic solution at a temperature of 20-90 ° C for 1-8 hours, and is separated and purified. The waste residue is removed, and the isoelectric point of the leachate is adjusted with a base to extract the separated protein.

6. The method according to claim 4, wherein in the step e, after entering the spinning process, the protein synthetic fiber is formed by a wet spinning process.

7. The method according to claim 4, wherein: in the step c, spinning and dissolving The concentration of protein and polyvinyl alcohol in the liquid is 15% to 38%. In step e, after entering the spinning process, the protein synthetic fiber is prepared by a dry-jet wet spinning process.

8. The method according to claim 4, wherein in the step c, the concentration of the protein and polyvinyl alcohol in the spinning solution is from 20% to 38%, and in step e, the spinning process is entered. Thereafter, a protein spinning synthetic fiber is produced by a dry spinning process.