CN109517931B - High-stability leather fatting agent and preparation method thereof - Google Patents
High-stability leather fatting agent and preparation method thereof Download PDFInfo
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- CN109517931B CN109517931B CN201811442077.9A CN201811442077A CN109517931B CN 109517931 B CN109517931 B CN 109517931B CN 201811442077 A CN201811442077 A CN 201811442077A CN 109517931 B CN109517931 B CN 109517931B
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
Abstract
The invention discloses a high-stability leather fatting agent which is prepared from the following raw materials in parts by weight: 50-60 parts of modified neat's foot oil, 15-25 parts of beeswax liquid, 10-18 parts of triethylene glycol, 8-15 parts of isotridecyl alcohol myristate, 5-10 parts of oleyl alcohol polyoxyethylene ether, 5-10 parts of coconut diethanolamide, 1-2 parts of vaseline and 65-75 parts of water. The invention also discloses a preparation method of the leather fatliquor with high stability. The fatting agent has good emulsifying power, excellent permeability and excellent stability, can uniformly and deeply permeate into a leather board, has strong capability of dispersing natural grease, makes the leather board soft, full and elastic, is smooth, mercerized, oily and not greasy, and has excellent extensibility, softness and elasticity of the fatted fur; the alkali resistance and the metal salt ion stability of the fatting agent are good, and the extremely high requirements of multi-procedure step-by-step fatting on the performance of the fatting agent can be met; the compounded fatting agent has good storage stability, can be stored for a long time and has stable properties.
Description
Technical Field
The invention relates to the technical field of leather fatting agents and preparation, in particular to a high-stability cow hoof oil leather fatting agent and a preparation method thereof.
Background
The greasing is an important process in a series of production and processing processes of leather from raw leather to finished leather, and is characterized in that grease is directly applied to the processed leather or applied to the processed leather in an emulsion mode under a certain condition, so that grease components with a lubricating effect permeate into leather fibers of the leather, the mobility among the leather fibers is increased, the leather is soft and folding-resistant, and the defects that the leather surface is stiff and easy to break due to leather fiber bonding are avoided. The fatted leather has good hand feeling and physical and mechanical properties, and simultaneously, the shrinkage rate of the leather surface is reduced, and the finished leather area is increased.
The leather fatting agent is one of chemical materials with large use amount, and the main active component of the leather fatting agent is grease subjected to hydrophilic modification. The raw material oil of the fatting agent mainly comprises vegetable oil, animal oil, mineral oil, synthetic oil and the like, and the commonly used vegetable oil raw materials comprise rapeseed oil, castor oil, soybean oil and the like; common animal oil and fat raw materials comprise fish oil, lecithin, neatsfoot oil, lanolin and the like; common mineral and synthetic oil materials include paraffin, vaseline, etc., and the general formula of the chemical components is CnH2n+(2 n = 5~ 40). With the development of leather industry in China, the types of the fatting agents are continuously increased, and the quality and the performance are continuously improved. The fatting agent in the prior art is mostly used in the form of emulsion, and the stability of the fatting agent is an important factor influencing the use performance of the fatting agent.
The neat's foot oil is a natural grease without hydroxyl, has strong hydrophobicity, is mainly triglyceride of 16 acid, 18 acid or oleic acid, polyene type acid, belongs to one of high-grade fatting agents, leather treated by the neat's foot oil fatting agent has excellent characteristics, but the fatting treatment effect of the existing neat's foot oil fatting agent needs to be improved, and the problems of poor storage stability, acid and alkali resistance, poor metal ion stability and the like exist at the same time.
Disclosure of Invention
The invention aims to provide a high-stability leather fatliquor and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-stability leather fatting agent comprises the following raw material components: modified neat's foot oil, beeswax liquid, triethylene glycol, isotridecanol myristate, oleyl alcohol polyoxyethylene ether, coconut oil acid diethanolamide, vaseline and water, the weight parts of the raw materials are as follows: 50-60 parts of modified neat's foot oil, 15-25 parts of beeswax liquid, 10-18 parts of triethylene glycol, 8-15 parts of isotridecyl alcohol myristate, 5-10 parts of oleyl alcohol polyoxyethylene ether, 5-10 parts of coconut diethanolamide, 1-2 parts of vaseline and 65-75 parts of water.
Further, the high-stability leather fatliquor is composed of the following raw materials in parts by weight: 55 parts of modified neat's foot oil, 20 parts of beeswax liquid, 15 parts of triethylene glycol, 12 parts of isotridecanol myristate, 8 parts of oleyl alcohol polyoxyethylene ether, 8 parts of coconut diethanolamide, 1.5 parts of vaseline and 70 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 10-20% of the neat's foot oil in percentage by weight and sodium methoxide which is 1-1.5% of the neat's foot oil in percentage by weight at 60 ℃ for 4 hours to obtain primary modified neat's foot oil; and then cooling to 45 ℃, adding phosphorus pentoxide powder which is 40-50% of the weight percentage of the primarily modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain the modified neat's foot oil.
Further, the phosphorus pentoxide powder is added into the primary modified neat's foot oil under the conditions that the temperature of the primary modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 30-45 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat foot oil, heating the prepared modified neat foot oil and the beeswax liquid to 85-90 ℃, mixing, and stirring for 2-3 hours under heat preservation;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 3-4 hours under the condition of heat preservation;
(3) mixing coconut diethanolamide with water, and heating to 70-80 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), wherein the feeding process is carried out for 1-2 h, and after the feeding is finished, cooling to 50-60 ℃, and carrying out heat preservation and stirring for 0.5-1 h;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2-3 hours, and cooling to room temperature to obtain the leather fatliquor.
According to the invention, the oxfoot oil without hydroxyl is modified by diethanol amine containing hydroxyl and amino in a molecular structure under a specific condition, so that the modified product contains hydroxyl and amido bond active groups at the same time, and the product after phosphorylation reaction contains a mixture of monoglyceride, diglyceride and fatty acid amide, wherein the amido bond greatly increases the affinity of the fatting agent to leather fibers, and is beneficial to the leather fibers to adsorb a large amount of grease molecules, so that the leather is endowed with plump and soft characteristics, and meanwhile, the leather has good natural gloss. The modified neat's foot oil has good emulsification effect and stability, and the fatting agent compounded by the modified neat's foot oil and the beeswax liquid and the triethylene glycol has good stability to acid, alkali and salt ions.
The invention has the following beneficial effects: the fatting agent has good emulsifying power, excellent permeability and excellent stability, can uniformly and deeply permeate into a leather board, has strong capability of dispersing natural grease, makes the leather board soft, full and elastic, is smooth, mercerized, oily and not greasy, and has excellent extensibility, softness and elasticity of the fatted fur; the alkali resistance and the salt ion stability of the fatting agent are good, and the extremely high requirements of multi-procedure step-by-step fatting on the performance of the fatting agent can be met; the compounded fatting agent has good storage stability, can be stored for a long time and has stable properties.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1: the high-stability leather fatting agent is composed of the following raw materials in parts by weight: 55 parts of modified neat's foot oil, 20 parts of beeswax liquid, 15 parts of triethylene glycol, 12 parts of isotridecanol myristate, 8 parts of oleyl alcohol polyoxyethylene ether, 8 parts of coconut diethanolamide, 1.5 parts of vaseline and 70 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with 15% diethanolamine and 1.2% sodium methoxide at 60 deg.C for 4h to obtain the primary modified neat's foot oil; then cooling to 45 ℃, adding phosphorus pentoxide powder accounting for 45% of the weight of the primarily modified neat foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain the modified neat foot oil; the phosphorus pentoxide powder is added into the primary modified neat's foot oil under the conditions that the oil temperature of the primary modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 40 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat's foot oil, heating the prepared modified neat's foot oil and beeswax liquid to 88 deg.C respectively, mixing, stirring for 2.5 h;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 3.5 hours under the condition of heat preservation;
(3) mixing the coconut diethanolamide with water, and heating to 75 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), wherein the feeding process is 1.5h, cooling to 55 ℃ after the feeding is finished, and stirring for 1h under heat preservation;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2.5 hours, and cooling to room temperature to obtain the leather fatliquor.
Example 2: the high-stability leather fatting agent is composed of the following raw materials in parts by weight: 50 parts of modified neat's foot oil, 15 parts of beeswax liquid, 10 parts of triethylene glycol, 8 parts of isotridecanol myristate, 5 parts of oleyl alcohol polyoxyethylene ether, 5 parts of coconut diethanolamide, 1 part of vaseline and 65 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 10 percent of the neat's foot oil in weight percentage and sodium methoxide which is 1 percent of the neat's foot oil in weight percentage for 4 hours at 60 ℃ to obtain primary modified neat's foot oil; then cooling to 45 ℃, adding phosphorus pentoxide powder which is 40% of the weight percentage of the primarily modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain the modified neat's foot oil; the phosphorus pentoxide powder is added into the primary modified neat's foot oil under the conditions that the oil temperature of the primary modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 30 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat's foot oil, heating the prepared modified neat's foot oil and beeswax liquid to 85 ℃ respectively, mixing, and stirring for 2 hours under heat preservation;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 3 hours under the condition of heat preservation;
(3) mixing the coconut diethanolamide with water, and heating to 70 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), wherein the feeding process is carried out for 1h, and after the feeding is finished, cooling to 50 ℃ and stirring for 0.5h under heat preservation;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2 hours, and cooling to room temperature to obtain the leather fatliquor.
Example 3: the high-stability leather fatting agent is composed of the following raw materials in parts by weight: 60 parts of modified neat's foot oil, 25 parts of beeswax liquid, 15 parts of isotridecanol myristate, 10 parts of oleyl alcohol polyoxyethylene ether, 10 parts of coconut diethanolamide, 18 parts of triethylene glycol, 2 parts of vaseline and 75 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 20 percent of the neat's foot oil in weight percentage and sodium methoxide which is 1.5 percent of the neat's foot oil in weight percentage for 4 hours at 60 ℃ to obtain primary modified neat's foot oil; then cooling to 45 ℃, adding phosphorus pentoxide powder accounting for 50% of the mass of the primary modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain modified neat's foot oil; the phosphorus pentoxide powder is added into the primarily modified neat's foot oil under the conditions that the oil temperature of the primarily modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 45 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat's foot oil, heating the prepared modified neat's foot oil and beeswax liquid to 90 ℃ respectively, mixing, and stirring for 3 hours under heat preservation;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 4 hours under the condition of heat preservation;
(3) mixing the coconut diethanolamide with water, and heating to 80 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), performing a material adding process for 2 hours, cooling to 60 ℃ after material adding is completed, and stirring for 1 hour under heat preservation;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 3 hours, and cooling to room temperature to obtain the leather fatliquor.
Example 4: the high-stability leather fatting agent is composed of the following raw materials in parts by weight: 60 parts of modified neat's foot oil, 15 parts of beeswax liquid, 18 parts of triethylene glycol, 8 parts of isotridecanol myristate, 10 parts of oleyl alcohol polyoxyethylene ether, 5 parts of coconut diethanolamide, 1 part of vaseline and 75 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 10 percent of the neat's foot oil in weight percentage and sodium methoxide which is 1.5 percent of the neat's foot oil in weight percentage for 4 hours at 60 ℃ to obtain primary modified neat's foot oil; then cooling to 45 ℃, adding phosphorus pentoxide powder which is 40% of the weight percentage of the primarily modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain the modified neat's foot oil; the phosphorus pentoxide powder is added into the primarily modified neat's foot oil under the conditions that the oil temperature of the primarily modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 45 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat's foot oil, heating the prepared modified neat's foot oil and beeswax liquid to 85 ℃, mixing, fully stirring and dissolving uniformly;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 4 hours under the condition of heat preservation;
(3) mixing the coconut diethanolamide with water, and heating to 70 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), performing a material adding process for 2 hours, cooling to 50 ℃ after material adding is completed, and stirring for 1 hour under heat preservation;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2 hours, and cooling to room temperature to obtain the leather fatliquor.
Example 5: the high-stability leather fatting agent is composed of the following raw materials in parts by weight: 58 parts of modified neat's foot oil, 18 parts of beeswax liquid, 10 parts of isotridecanol myristate, 6 parts of oleyl alcohol polyoxyethylene ether, 7 parts of coconut diethanolamide, 12 parts of triethylene glycol, 1.5 parts of vaseline and 68 parts of water.
Further, the preparation method of the modified neat foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 12 percent of the neat's foot oil in weight percentage and sodium methoxide which is 1.2 percent of the neat's foot oil in weight percentage for 4 hours at 60 ℃ to obtain primary modified neat's foot oil; then cooling to 45 ℃, adding phosphorus pentoxide powder accounting for 48% of the weight of the primarily modified neat foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to pH 6-7 to obtain modified neat foot oil; the phosphorus pentoxide powder is added into the primary modified neat's foot oil under the conditions that the oil temperature of the primary modified neat's foot oil is 45 ℃, the continuous stirring is carried out, and the slow adding is carried out, wherein the adding time is controlled to be 35 min.
The preparation method of the high-stability leather fatliquor comprises the following steps:
(1) preparing modified neat's foot oil, heating the prepared modified neat's foot oil and beeswax liquid to 87 ℃, mixing, fully stirring and dissolving uniformly;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 3.5 hours under the condition of heat preservation;
(3) mixing the coconut diethanolamide with water, and heating to 72 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), wherein the adding process is 80min, and after the adding is finished, cooling to 58 ℃ and stirring for 40min under heat preservation;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2.5 hours, and cooling to room temperature to obtain the leather fatliquor.
The fat-liquoring agents obtained in examples 1 to 5 were subjected to salt stability analysis, and 1, 3 and 5mL of CrCl with a mass concentration of 5%3And adding the solution into 20mL of fatting agent solution with the volume concentration of 10%, fully and uniformly stirring, standing for 24h, and recording the appearance of the solution.
| CrCl3Amount of solution | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| 1 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 3 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 5 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
The salt tolerance stability analysis result of the fatting agent obtained by the invention shows that no oily turbidity or oily layering occurs, which indicates that the salt tolerance stability of the fatting agent obtained by the invention is very good.
The fatting agents obtained in examples 1 to 5 were analyzed for acid stability, and 1 mol. L, 7 mol. L, and 10mL were each added-1Adding the hydrochloric acid into 20mL of fatting agent solution with the volume concentration of 10%, fully and uniformly stirring, standing for 24h, and recording the appearance of the solution.
| Volume of acid | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| 1 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 3 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 7 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 10 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
The acid stability analysis result of the fatting agent obtained by the invention shows that no oily turbidity or oily layering occurs, which indicates that the fatting agent obtained by the invention has very good acid stability.
The fat-liquoring agents obtained in examples 1 to 5 were subjected to alkali stability analysis, and 1, 3, 7 and 10mL of the fat-liquoring agents were added to give 1 mol. L-1Adding the ammonia water into 20mL of fatting agent solution with the volume concentration of 10%, fully and uniformly stirring, standing for 24h, and recording the appearance of the solution.
| Volume of ammonia | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| 1 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 3 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 7 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
| 10 mL | Clarification | Clarification | Clarification | Clarification | Clarification |
The result shows that the fatting agent of the invention is completely dissolved in the alkali solution without oily demixing or turbidity, and the obtained fatting agent has better alkali stability.
The results of the fat liquor obtained by the invention on the goat skin are measured under the same fat liquor treatment conditions and are shown in the following table:
| performance of | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Blank space |
| Tensile strength/MPa | 12.7 | 12.1 | 11.2 | 10.5 | 12.2 | 7.9 |
| Elongation at break/% | 54.2 | 53.0 | 51.6 | 48.5 | 50.4 | 36.7 |
| Softness/phi 15mm | 8.23 | 8.11 | 8.27 | 7.75 | 7.90 | 4.06 |
The fatting agent has good emulsifying power, excellent permeability and excellent stability, can uniformly and deeply permeate into a leather board, has strong capability of dispersing natural grease, makes the leather board soft, full and good in elasticity, is smooth, mercerized, oily and not greasy, and shows that the fatted fur has excellent extensibility, softness and elasticity in actual use effect.
In addition, the stability results of the experiment of sealing and storing the fatting agent of the invention at normal temperature are shown in the following table:
| Time | example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| 0 month | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization |
| 3 months old | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization |
| 6 months old | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization |
| 9 months old | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization |
| 12 months old | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization | Emulsion stabilization |
The fatting agent of the invention has no layering and turbidity after being placed for 12 months under the conventional condition, and has better emulsion stability.
Claims (6)
1. The leather fatting agent with high stability is characterized by comprising the following raw material components: modified neat's foot oil, beeswax liquid, triethylene glycol, isotridecanol myristate, oleyl alcohol polyoxyethylene ether, coconut oil acid diethanolamide, vaseline and water, the weight parts of the raw materials are as follows: 50-60 parts of modified neat's foot oil, 15-25 parts of beeswax liquid, 10-18 parts of triethylene glycol, 8-15 parts of isotridecyl alcohol myristate, 5-10 parts of oleyl alcohol polyoxyethylene ether, 5-10 parts of coconut diethanolamide, 1-2 parts of vaseline and 65-75 parts of water;
the preparation method of the modified neat's foot oil comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 10-20% of the neat's foot oil in percentage by weight and sodium methoxide which is 1-1.5% of the neat's foot oil in percentage by weight at 60 ℃ for 4 hours to obtain primary modified neat's foot oil; and then cooling to 45 ℃, adding phosphorus pentoxide powder which is 40-50% of the weight percentage of the primarily modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to the pH value of 6-7 to obtain the modified neat's foot oil.
2. The high-stability leather fatliquor according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 55 parts of modified neat's foot oil, 20 parts of beeswax liquid, 15 parts of triethylene glycol, 12 parts of isotridecanol myristate, 8 parts of oleyl alcohol polyoxyethylene ether, 8 parts of coconut diethanolamide, 1.5 parts of vaseline and 70 parts of water.
3. The high-stability leather fatliquor according to claim 1, wherein: and adding the phosphorus pentoxide powder into the primary modified neat's foot oil under the conditions that the temperature of the primary modified neat's foot oil is 45 ℃, continuously stirring and slowly adding, wherein the adding time is controlled to be 30-45 min.
4. The method for preparing the high-stability leather fatliquor in the claim 1 or 2 is characterized by comprising the following steps:
(1) preparing modified neat foot oil, heating the prepared modified neat foot oil and the beeswax liquid to 85-90 ℃, mixing, and stirring for 2-3 hours under heat preservation;
(2) adding isotridecanol myristate, oleyl alcohol polyoxyethylene ether and triethylene glycol into the liquid obtained in the step (1), and stirring for 3-4 hours under the condition of heat preservation;
(3) mixing coconut diethanolamide with water, and heating to 70-80 ℃;
(4) slowly adding the solution obtained in the step (3) into the liquid obtained in the step (2), wherein the feeding process is carried out for 1-2 h, and after the feeding is finished, cooling to 50-60 ℃, and carrying out heat preservation and stirring for 0.5-1 h;
(5) and (4) adding vaseline into the liquid obtained in the step (4), keeping the temperature, stirring for 2-3 hours, and cooling to room temperature to obtain the leather fatliquor.
5. The method for preparing the high-stability leather fatliquor according to claim 4, wherein the method comprises the following steps: the preparation method of the modified neat foot oil in the step (1) comprises the following steps: stirring and reacting the neat's foot oil with diethanolamine which is 10-20% of the neat's foot oil in percentage by weight and sodium methoxide which is 1-1.5% of the neat's foot oil in percentage by weight at 60 ℃ for 4 hours to obtain primary modified neat's foot oil; and then cooling to 45 ℃, adding phosphorus pentoxide powder which is 40-50% of the weight percentage of the primarily modified neat's foot oil, heating to 75 ℃ after the addition is finished, carrying out heat preservation reaction for 3 hours, and neutralizing to the pH value of 6-7 to obtain the modified neat's foot oil.
6. The method for preparing the high-stability leather fatliquor according to claim 5, wherein the method comprises the following steps: and adding the phosphorus pentoxide powder into the primary modified neat's foot oil under the conditions that the temperature of the primary modified neat's foot oil is 45 ℃, continuously stirring and slowly adding, wherein the adding time is controlled to be 30-45 min.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691619A (en) * | 2009-10-19 | 2010-04-07 | 浙江赞宇科技股份有限公司 | Method for preparing leather fatliquoring agent |
| CN103421912A (en) * | 2013-09-04 | 2013-12-04 | 北京泛博化学股份有限公司 | Fatting agent and preparing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691619A (en) * | 2009-10-19 | 2010-04-07 | 浙江赞宇科技股份有限公司 | Method for preparing leather fatliquoring agent |
| CN103421912A (en) * | 2013-09-04 | 2013-12-04 | 北京泛博化学股份有限公司 | Fatting agent and preparing method thereof |
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