CN111394527A - Novel leather assistant and preparation method thereof - Google Patents
Novel leather assistant and preparation method thereof Download PDFInfo
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- CN111394527A CN111394527A CN202010387391.2A CN202010387391A CN111394527A CN 111394527 A CN111394527 A CN 111394527A CN 202010387391 A CN202010387391 A CN 202010387391A CN 111394527 A CN111394527 A CN 111394527A
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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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/04—Soaking
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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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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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
- C14C11/00—Surface finishing of leather
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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
- C14C3/00—Tanning; Compositions for tanning
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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
- C14C5/00—Degreasing leather
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Abstract
The invention discloses a novel leather assistant and a preparation method thereof, wherein the leather assistant comprises, by mass, 33% -37% of a main material, 0.5% -1.5% of an anionic surfactant, 0.5% -1.5% of a nonionic surfactant and 61% -65% of water. According to the invention, through adjustment of the content of each part in the leather auxiliary agent and improvement of the preparation process, the crystallization condition of the leather auxiliary agent in the production, transportation and storage processes disappears, the production, transportation and storage processes of the leather auxiliary agent are facilitated, the reduction of effective components of the leather auxiliary agent caused by crystallization is reduced, the content of the effective components is ensured, the loss is reduced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a novel leather assistant and a preparation method thereof.
Background
In the modern leather-making industry, different assistants are only used in each stage, and the use amount of the assistants is not large, but the assistants are different from the special properties of other chemical materials, so that the quality and the performance of leather products can be provided, the production process can be simplified, the production period can be shortened, the use amount and the energy consumption of other materials can be reduced, and even the use of some assistants can reduce or eliminate the emission of pollutants, so that the use of the leather-making assistants has greater emergency benefits or social benefits.
The leather assistant is mainly used in the technical processes of filling, quick soaking, softening assisting, fiber separating, degreasing, softening, tanning, neutralizing, dyeing, greasing, coating and the like, and has the functions of wetting, diffusing, emulsifying, tanning assisting, color fixing, level dyeing, dye preventing, mildew preventing, water proofing, oil proofing, stain proofing, static resistance, hand feeling improvement and the like, and some of the leather assistant also has a plurality of functions. According to the sequence and name of the tanning process flow and the functions of the tanning auxiliary agent, the leather auxiliary agent is mainly divided into the following classes: general purpose type auxiliaries (surfactants), preservatives, mildewcides, soaking (dehairing) auxiliaries, liming auxiliaries, deliming auxiliaries, softening auxiliaries, pickling auxiliaries, tanning auxiliaries, fatliquoring auxiliaries, dyeing auxiliaries, finishing auxiliaries and the like, and the effect of the surfactants in the leather processing process is mainly explained below.
In the process of preparation, transportation and storage of the conventional large-amount used general-purpose auxiliary agent, an environment of high temperature and direct sunlight exists, the leather auxiliary agent in the environment often generates crystallization, the concentration of effective components of the leather auxiliary agent is reduced, the quality of the leather auxiliary agent is reduced, and meanwhile, the step of removing the crystallization is needed during final use, so that the use is inconvenient.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned problems occurring in the conventional leather chemicals.
Therefore, one of the objects of the present invention is to overcome the crystallization problem of the conventional general leather assistant, and to provide a novel leather assistant and a method for preparing the same.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: the formula of the novel leather assistant comprises, by weight, 33-37% of main materials, 0.5-1.5% of anionic surfactant, 0.5-1.5% of nonionic surfactant and 61-65% of water, wherein the main materials comprise propylene oxide, ethylene oxide and glycerol.
As a preferable scheme of the formula of the novel leather assistant of the invention, wherein: according to the weight of the raw materials, the method comprises the following steps: 35% of main material, 1% of auxiliary material, 2% of auxiliary material and 63% of water, wherein the main material comprises propylene oxide, ethylene oxide and glycerol.
As a preferable scheme of the formula of the novel leather assistant of the invention, wherein: the main materials are counted according to the weight of the raw materials and comprise: 82-86% of propylene oxide, 11-15% of ethylene oxide and 2-4% of glycerol.
As a preferable scheme of the formula of the novel leather assistant of the invention, wherein: the main material comprises the following components: 84% of propylene oxide, 13% of ethylene oxide and 3% of glycerol.
As a preferable scheme of the formula of the novel leather assistant of the invention, wherein: the anionic surfactant is NNO and the nonionic surfactant is JFC.
The invention also aims to provide a preparation method of the leather assistant.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: a preparation method of a novel leather assistant comprises the following steps:
preparation of main materials: mixing propylene oxide, ethylene oxide and glycerol to obtain a main material;
adding an anionic surfactant and water: adding water and NNO, and stirring;
adding main materials: adding main materials into a mixed system of water and NNO which are uniformly stirred;
heating and stirring: heating the mixed system of the main material and the NNO until the raw materials are melted.
Adding a nonionic surfactant and water: and adding water and JFC into the mixed system after the raw materials are dissolved, and uniformly stirring.
As a preferable scheme of the preparation method of the novel leather assistant of the invention, wherein: the preparation process of the main materials comprises the following steps: mixing propylene oxide, ethylene oxide and glycerol, stirring at 105 deg.C and 1500rpm for 8 hr, mixing, and reacting to obtain main material.
As a preferable scheme of the preparation method of the novel leather assistant of the invention, wherein: in the step of adding the anionic surfactant and water, the weight of the added water accounts for 25.2 percent of the total weight of the system and 40 percent of the total weight of the water; in the step, the auxiliary material 2 and water are added, wherein the weight of the added water accounts for 37.8 percent of the total weight of the system and 60 percent of the total weight of the water.
As a preferable scheme of the preparation method of the novel leather assistant of the invention, wherein: in the heating and stirring step, the temperature of the mixing system is heated to 70-80 ℃, and the rotating speed is 1900-2100 rpm.
As a preferable scheme of the preparation method of the novel leather assistant of the invention, wherein: in the heating and stirring step, the temperature of the mixed system is heated to 75 ℃, and the rotating speed is 2000 rpm.
The invention eliminates the crystallization condition of the leather assistant in the production, transportation and storage processes by adjusting the content of each part in the leather assistant and improving the preparation process, breaks the technical bias that the leather assistant generates crystallization under the conditions of high temperature and insolation, facilitates the production, transportation and storage processes of the leather assistant, reduces the effective components of the leather assistant generated by crystallization, ensures the content of the effective components, reduces the loss and reduces the cost.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1a shows a leather assistant that generates crystallization, and FIG. 1b shows a novel leather assistant that does not generate crystallization.
Example 1
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 2
0.5544 tons of propylene oxide, 0.0858 tons of ethylene oxide and 0.0198 tons of glycerol are mixed and heated to 105 ℃, the stirring speed is 1500rpm to stir raw materials, the high temperature and the stirring condition last 8 hours to react to obtain main materials, 0.512 tons of water and 0.03 tons of NNO are added, the stirring is started at the stirring speed of 2000rpm, the main materials are added again, the solution is in a turbid state, then the reaction system is heated to 75 ℃, 0.03 tons of JFC and 0.768 tons of water are added, and the stirring is stopped after the reaction system is in a transparent state, so that 2 tons of novel leather assistant is obtained.
Example 3
0.6216 tons of propylene oxide, 0.0962 tons of ethylene oxide and 0.02222 tons of glycerol are mixed and heated to 105 ℃, the stirring speed is 1500rpm to stir the raw materials, the high temperature and the stirring condition last for 8 hours to obtain a main material, 0.496 tons of water and 0.01 tons of NNO are added while stirring is started, the stirring speed is 2000rpm, the main material is added again, the solution is in a turbid state, then the reaction system is heated to 75 ℃, JFC0.01 tons and water 0.744 tons are added again, and the stirring is stopped after the reaction system is in a transparent state, so that 2 tons of novel leather assistant is obtained.
Example 4
0.6048 tons of propylene oxide, 0.0936 tons of ethylene oxide and 0.0216 tons of glycerol are mixed and heated to 105 ℃, the raw materials are stirred at the stirring speed of 1500rpm, the high-temperature and stirring conditions are continued for 8 hours to obtain a main material, 0.488 tons of water and 0.03 tons of NNO are added while stirring is started, the stirring speed is 2000rpm, the main material is added again, the solution is in a turbid state, then the reaction system is heated to 75 ℃, 0.03 tons of JFC and 0.732 tons of water are added again, and the stirring is stopped after the reaction system is in a transparent state, so that 2 tons of novel leather assistant is obtained.
Example 5
0.5712 tons of propylene oxide, 0.0884 tons of ethylene oxide and 0.0204 tons of glycerin are mixed and heated to 105 ℃, the stirring speed is 1500rpm to stir raw materials, the high temperature and the stirring condition last for 8 hours to obtain main materials, 0.52 tons of water and 0.01 tons of NNO are added, the stirring is started at the stirring speed of 2000rpm, the main materials are added again, the solution is in a turbid state, then the reaction system is heated to 75 ℃, 0.01 tons of JFC and 0.78 tons of water are added again, and the stirring is stopped after the reaction system is in a transparent state, so that 2 tons of novel leather assistant is obtained.
Example 6
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.03 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.01 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 7
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.01 ton of NNO, starting stirring at the stirring speed of 2000rpm, adding the main material again, heating the solution to 75 ℃ for the reaction system, adding 0.03 ton of JFC and 0.756 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 8
Mixing 0.574 ton of propylene oxide, 0.105 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring raw materials at a stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, starting stirring at a stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating the reaction system to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather assistant.
Example 9
Mixing 0.581 ton of propylene oxide, 0.098 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring the raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating the reaction system to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather assistant.
Example 10
Mixing 0.595 tons of propylene oxide, 0.098 tons of ethylene oxide and 0.021 tons of glycerol, heating to 105 ℃, stirring the raw materials at the stirring speed of 1500rpm, reacting at high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 tons of water and 0.02 tons of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 tons of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather assistant.
Example 11
Mixing 0.602 ton of propylene oxide, 0.077 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, starting stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of novel leather assistant.
Example 12
0.5915 tons of propylene oxide, 0.0945 tons of ethylene oxide and 0.014 tons of glycerol are mixed and heated to 105 ℃, the raw materials are stirred at the stirring speed of 1500rpm, the high temperature and stirring condition lasts for 8 hours to react to obtain the main material, 0.504 tons of water and 0.02 tons of NNO are added, the stirring is started at the stirring speed of 2000rpm, the main material is added again, the solution is in a turbid state, then the reaction system is heated to 75 ℃, 0.02 ton of JFC and 0.756 ton of water are added again, and the stirring is stopped after the reaction system is in a transparent state, so that 2 tons of novel leather assistant is obtained.
Example 13
0.5845 tons of propylene oxide, 0.0875 tons of ethylene oxide and 0.028 tons of glycerin are mixed and heated to 105 ℃, the raw materials are stirred at the stirring speed of 1500rpm, the high temperature and the stirring condition last for 8 hours to react to obtain main materials, 0.504 tons of water and 0.02 tons of NNO are added, the stirring is started at the stirring speed of 2000rpm, then the main materials are added, the solution is in a turbid state, then the reaction system is heated to 75 ℃, 0.02 ton of JFC and 0.756 ton of water are added, the stirring is stopped after the reaction system is in a transparent state, and 2 tons of novel leather assistant is obtained.
Example 14
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under the stirring condition to obtain a main material, adding 0.441 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again, heating the solution to 75 ℃ for the reaction system, adding 0.02 ton of JFC and 0.819 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 15
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.567 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again, heating the solution to 75 ℃, adding 0.02 ton of JFC and 0.693 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of novel leather additive.
Example 16
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 70 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 17
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 80 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 18
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of sodium fatty alcohol sulfate, starting stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of novel leather additive.
Example 19
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of anionic polyacrylamide, stirring at the stirring speed of 2000rpm, adding the main material again, heating the solution to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 20
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring the raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating the reaction system to 75 ℃, adding 0.02 ton of sorbitan ester and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather assistant.
Example 21
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring the raw materials at the stirring speed of 1500rpm, reacting at high temperature for 8 hours under the stirring condition to obtain a main material, stirring while adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material, heating the solution to 75 ℃ to obtain a reaction system, adding 0.02 ton of alkylphenol ethoxylate and 0.756 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 22
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 1900rpm, adding the main material again, heating the solution to 75 ℃ after the solution is turbid, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is transparent to obtain 2 tons of the novel leather additive.
Example 23
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 24
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 100 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2000rpm, adding the main material again until the solution is in a turbid state, heating the reaction system to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of novel leather additive.
Example 25
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 110 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again until the solution is in a turbid state, heating the reaction system to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of novel leather additive.
Example 26
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring the raw materials at the stirring speed of 1450rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again until the solution is in a turbid state, heating to 75 ℃ for a reaction system, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 27
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1550rpm, reacting at a high temperature for 8 hours under stirring conditions to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again, heating the solution to 75 ℃ after the solution is turbid, adding 0.02 ton of JFC and 0.756 ton of water again, and stopping stirring after the reaction system is transparent to obtain 2 tons of the novel leather additive.
Example 28
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 7.5 hours to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again, heating the solution to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Example 29
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerol, heating to 105 ℃, stirring raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8.5 hours to obtain a main material, adding 0.504 ton of water and 0.02 ton of NNO, stirring at the stirring speed of 2100rpm, adding the main material again, heating the solution to 75 ℃, adding 0.02 ton of JFC and 0.756 ton of water, and stopping stirring after the reaction system is in a transparent state to obtain 2 tons of the novel leather additive.
Comparative example 1
Mixing 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 105 ℃, stirring the raw materials at the stirring speed of 1500rpm, reacting at a high temperature for 8 hours to obtain a main material, mixing the main material with 0.02 ton of NNO, 0.02 ton of JFC and 1.26 ton of water, stirring at the stirring speed of 2000rpm, heating to 75 ℃, and stopping stirring after the reaction system is uniformly mixed to obtain 2 tons of the novel leather additive.
Comparative example 2
Mixing 0.504 ton of water, 0.02 ton of NNO, 0.588 ton of propylene oxide, 0.091 ton of ethylene oxide and 0.021 ton of glycerin, heating to 75 ℃, simultaneously starting stirring, wherein the stirring speed is 2000rpm, adding 0.02 ton of JFC and 0.756 ton of water after uniformly mixing, and stopping stirring after uniformly stirring to obtain 2 tons of the novel leather additive.
Example 22
The novel leather assistant prepared in examples 1-21 and the novel leather assistant prepared in comparative examples 1 and 2 were put in a 2t iron bucket, stored at 75 ℃ for 24 hours, simulated in a high-temperature insolation environment, and after the high-temperature storage, crystals in the novel leather assistant were removed and the weight of the crystals was measured.
TABLE 1 weight of crystals of examples 1 to 21 and comparative examples 1 and 2
| Examples and comparative examples | Crystal weight (kg) |
| Example 1 | 0 |
| Example 2 | 64 |
| Example 3 | 64 |
| Example 4 | 50 |
| Example 5 | 50 |
| Example 6 | 36 |
| Example 7 | 36 |
| Example 8 | 30 |
| Example 9 | 26 |
| Example 10 | 26 |
| Example 11 | 24 |
| Example 12 | 18 |
| Example 13 | 20 |
| Example 14 | 38 |
| Example 15 | 34 |
| Example 16 | 16 |
| Example 17 | 14 |
| Example 18 | 74 |
| Example 19 | 64 |
| Example 20 | 88 |
| Example 21 | 82 |
| Example 22 | 22 |
| Example 23 | 23 |
| Example 24 | 19 |
| Example 25 | 21 |
| Example 26 | 9 |
| Example 27 | 10 |
| Example 28 | 32 |
| Example 29 | 33 |
| Comparative example 1 | 100 |
| Comparative example 2 | 94 |
As can be seen from Table 1, comparing the results of example 1 with those of examples 2 to 5, the amount of crystals was not 0 when the compounding ratio of the main material and water and the two surfactants was changed;
comparing example 1 with examples 6 and 7, when the mixture ratio between the main material, water and surfactant was not changed, the amount of crystals was not 0 when the relative ratio of the two surfactants was changed;
comparing example 1 with examples 8 to 11, when the mixture ratio of the main material, water and surfactant is not changed, and the ratio of propylene oxide to ethylene oxide is changed, the amount of crystals is not 0;
comparing example 1 with examples 12 to 13, when the ratio of glycerin is increased or decreased and the amount of propylene oxide or ethylene oxide is correspondingly decreased or increased while the main material, water and surfactant are unchanged, the amount of crystals is not 0;
comparing example 1 with examples 14 and 15, when the amount ratio of water added twice was changed, the amount of crystals was not 0;
comparing example 1 with examples 16 and 17, when the temperature of heating in the temperature-raising stirring step is not 75 ℃ from 70 ℃, the amount of crystals is first decreased to 0 and then increased;
comparing example 1 with examples 18 and 19, when the added anionic surfactant is changed, the amount of crystallization is not 0;
comparing example 1 with examples 20 and 21, when the added nonionic surfactant is changed, the amount of crystallization is not 0;
comparing example 1 with examples 22 and 23, the stirring speed during the temperature raising stirring was changed so that the amount of crystals was not 0;
comparing example 1 with examples 24 and 25, the temperature of the high temperature during the preparation of the main material was changed, and when the temperature was not 105 degrees centigrade, the amount of the generated crystals was not 0;
comparing example 1 with examples 26 and 27, the rotation speed during the preparation of the main material was changed so that the amount of crystals generated was not 0 when the rotation speed was not 1500 rpm;
comparing example 1 with examples 28 and 29, when the duration of high temperature and stirring during the preparation of the main material was changed to 8 hours, the amount of crystals generated was not 0;
comparing example 1 with comparative examples 1 and 2, the charging mode of the materials was changed from stepwise charging to one-time charging or charging the materials in portions, the charging order of the materials was changed, and the amount of crystals was not 0.
The prepared crystallization-free leather auxiliary agent is improved in steps, so that stirring is more sufficient, and the main materials are mixed to generate the main materials: polyether, the main materials are mixed more uniformly, the water and the surfactant which are added step by step are mixed more uniformly, the proportion of the main materials, the water and the two surfactants is optimized, the proportion of each component in the main materials is optimized, the generation of the beneficial effect of no crystallization is ensured, and meanwhile, the types of the selected anionic surfactant and the selected nonionic surfactant have a promoting effect on the generation of the beneficial effect of no crystallization.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The novel leather assistant is characterized by comprising the following components: according to the weight of the raw materials, the detergent comprises 33-37% of main materials, 0.5-1.5% of anionic surfactant, 0.5-1.5% of nonionic surfactant and 61-65% of water, wherein the main materials comprise propylene oxide, ethylene oxide and glycerol.
2. The novel leather assistant according to claim 1, wherein: according to the weight of the raw materials, the method comprises the following steps: 35% of main material, 1% of auxiliary material, 2% of auxiliary material and 63% of water, wherein the main material comprises propylene oxide, ethylene oxide and glycerol.
3. The novel leather assistant according to claim 1 or 2, wherein the main material comprises, by weight: 82-86% of propylene oxide, 11-15% of ethylene oxide and 2-4% of glycerol.
4. The novel leather assistant according to claims 1-3, wherein the main material comprises the following components in parts by weight: 84% of propylene oxide, 13% of ethylene oxide and 3% of glycerol.
5. A novel leather aid according to claim 1 or 2 wherein the anionic surfactant is NNO and the nonionic surfactant is JFC.
6. The preparation method of the novel leather assistant is characterized by comprising the following steps:
preparation of main materials: mixing propylene oxide, ethylene oxide and glycerol, heating and reacting to obtain a main material;
adding an anionic surfactant and water: adding water and NNO, and stirring;
adding main materials: adding main materials into a mixed system of water and NNO which are uniformly stirred;
heating and stirring: heating the mixed system of the added main materials and the NNO, and stirring until the raw materials are dissolved.
Adding a nonionic surfactant and water: and adding water and JFC into the mixed system after the raw materials are dissolved, and uniformly stirring.
7. The method for preparing the novel leather assistant according to claim 1 or 6, wherein in the preparation process of the main material: mixing propylene oxide, ethylene oxide and glycerol, stirring at 105 deg.C and 1500rpm for 8 hr, mixing, and reacting to obtain main material.
8. The method for preparing the novel leather assistant according to any one of claims 1, 2 and 6, wherein in the step of adding the anionic surfactant and water, the weight of the added water accounts for 25.2 percent of the total weight of the system and 40 percent of the total weight of the water; in the step, the auxiliary material 2 and water are added, wherein the weight of the added water accounts for 37.8 percent of the total weight of the system and 60 percent of the total weight of the water.
9. The preparation method of the novel leather assistant according to claim 1 or 6, wherein the temperature of the heating and stirring step is controlled to 70-80 ℃ at a speed of 1900-2100 rpm.
10. The method for preparing the novel leather assistant according to any one of claims 1, 6 and 9, wherein the temperature of the mixed system is heated to 75 ℃ in the temperature-raising stirring step, and the rotating speed is 2000 rpm.
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