CN115449572A - Mercerizing fatliquor additive and preparation method and application thereof - Google Patents
Mercerizing fatliquor additive and preparation method and application thereof Download PDFInfo
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- CN115449572A CN115449572A CN202211008131.5A CN202211008131A CN115449572A CN 115449572 A CN115449572 A CN 115449572A CN 202211008131 A CN202211008131 A CN 202211008131A CN 115449572 A CN115449572 A CN 115449572A
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- fatliquor
- mercerizing
- emulsifier
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- 239000000654 additive Substances 0.000 title claims abstract description 28
- 230000000996 additive effect Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 150000002148 esters Chemical class 0.000 claims abstract description 33
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 26
- 239000000796 flavoring agent Substances 0.000 claims abstract description 22
- 239000002199 base oil Substances 0.000 claims abstract description 21
- 239000010985 leather Substances 0.000 claims abstract description 19
- 235000013355 food flavoring agent Nutrition 0.000 claims abstract description 18
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 17
- 239000003899 bactericide agent Substances 0.000 claims abstract description 17
- 239000002480 mineral oil Substances 0.000 claims abstract description 17
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000007957 coemulsifier Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 35
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 24
- 239000002253 acid Substances 0.000 claims description 16
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical group CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 12
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical group C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims 2
- 150000002888 oleic acid derivatives Chemical class 0.000 claims 2
- 238000004043 dyeing Methods 0.000 abstract description 6
- 239000002932 luster Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 150000002889 oleic acids Chemical class 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000835 fiber Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 235000019634 flavors Nutrition 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005517 mercerization Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 210000001161 mammalian embryo Anatomy 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- 239000010775 animal oil Substances 0.000 description 2
- 229920001436 collagen Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a mercerizing fatliquor additive, a preparation method and application thereof, wherein the mercerizing fatliquor additive is prepared from the following raw materials in parts by weight: 75-120 parts of synthetic ester, 200-250 parts of base oil, 50-100 parts of mineral oil, 30-50 parts of emulsifier SP-6030, 1530-50 parts of emulsifier O-1530, 4-6 parts of co-emulsifier, 0.4-0.6 part of flavoring agent and 0.7-1.2 parts of bactericide. The mercerizing fat liquor additive is used after fat liquor is added on the surface of leather, and is matched with a fat liquor, so that the dyeing depth can be increased, the color tone and the brightness can be increased, the dyeing uniformity can not be damaged, silk-like hand feeling, elegant luster and bidirectional fluff effect of suede leather and buffed leather can be endowed. The mercerizing fatliquor additive disclosed by the invention is simple in preparation method, low in production cost and capable of being produced in a large scale, and the prepared mercerizing fatliquor additive is good in stability and can be stored for a long time.
Description
Technical Field
The invention belongs to the technical field of leather chemical industry, and particularly relates to a mercerizing fatliquor additive and a preparation method and application thereof.
Background
The fatting agent is a chemical material with the largest dosage in leather chemicals, and the fatting agent for leather fatting mainly comprises four types: (1) natural fat-liquoring agent (natural animal and vegetable oil), (2) chemical processed product of natural fat, 3) synthetic fat-liquoring agent using petrochemical product as raw material, and (4) composite multifunctional fat-liquoring agent. In the current foreign fatting agent variety, the synthetic fatting agent accounts for about 40 percent, the natural fat fatting agent accounts for about 20 percent, and the multifunctional fatting agent accounts for about 40 percent; the domestic fat-liquoring agent product mainly comprises natural animal and vegetable oils accounting for about 80 percent, and the synthetic fat-liquoring agent and the modified fat-liquoring agent have few varieties and large differences, which are mainly related to the raw material structure of China.
For most suede leathers, the mercerized feeling can obviously improve the grade of the leather and increase the added value. The pile has a strong and soft gloss like silk, and a smooth feeling like silk. The mercerization performance of the mercerization fatliquor product in the current market can be improved, but the aims of strong mercerization and color vividness increase cannot be achieved.
The present invention has been made in view of the above circumstances.
Disclosure of Invention
The mercerized fatliquor assistant can increase dyeing depth, increase color tone and brightness and simultaneously cannot damage dyeing uniformity after the leather surface is subjected to fatliquoring treatment.
The invention provides a mercerized fatliquor additive, which is prepared from the following raw materials in parts by weight: 75-120 parts of synthetic ester, 200-250 parts of base oil, 50-100 parts of mineral oil, 30-50 parts of emulsifier SP-6030, 1530-50 parts of emulsifier O-1530, 4-6 parts of co-emulsifier, 0.4-0.6 part of flavoring agent and 0.7-1.2 parts of bactericide;
the synthetic ester is prepared by the following method: hydrogenated oleic acid, polyethylene glycol 200 and p-toluenesulfonic acid are mixed, reacted at the temperature of 115-120 ℃ under the vacuum condition, and cooled to 50-55 ℃ to obtain oily synthetic ester.
Furthermore, the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 1.9-2.0, and the p-toluenesulfonic acid accounts for 6-8 per mill of the mass of the synthetic ester.
Further, the acid value was measured during the reaction, and when the acid value was less than 5mgKOH/g, the reaction was stopped.
Further, the base oil is one or more of base oil 150SN, base oil 250SN, or base oil 350 SN.
Further, the mineral oil is 26# mineral oil, the co-emulsifier is isoamyl alcohol, and the bactericide is a BIT-20 bactericide.
In the invention, each raw material is a commercially available raw material, the type and source of the hydrogenated oleic acid are not particularly limited, and hydrogenated oleic acid well known to those skilled in the art can be adopted and can be commercially available. In the present invention, the hydrogenated oleic acid may be hydrogenated oleic acid provided by Nantong Yuhao chemical technology, inc. In the invention, the hydrogenated oleic acid has the function of endowing the leather blank with better oil wettability after surface greasing with silk-like hand feeling under the condition of not reducing the light resistance of the leather blank.
The mercerizing fatliquor additive provided by the invention comprises a flavoring agent. The type and source of the flavoring agent are not particularly limited in the invention, and the flavoring agent which is well known to those skilled in the art can be used and can be purchased in the market. In the present invention, the flavor is preferably a complex flavor of a natural flavor and a synthetic flavor. A flavoring agent of type YJ1070-2 available from Shanghai elegant perfumery may be used. In the invention, the flavoring agent is used for covering peculiar smell generated by grease, so that the fatliquored leather has proper smell.
The hydrogenated oleic acid is obtained by partially hydrogenating oleic acid, and the iodine value of the hydrogenated oleic acid is 90-100gI/100g.
In suede leather, after mercerized fatting agent is used for fatting treatment, the mercerized fatting agent auxiliary agent is added for surface fatting, and the structure of the mercerized fatting agent auxiliary agent contains ether bonds and longer carbon chains, so that pile fibers can be wrapped, and the pile fibers are endowed with strong and soft gloss like silk. The surface of the pile head is smooth, and the reflected light is parallel light, so that the pile head shows strong luster and strong mercerization sense.
Silky feel is a fundamental requirement for upgrading and adding value to most suede leathers. The concrete expression is as follows: the pile should have a silky, strong and soft luster, and silky, smooth feel. The luster of the pile of the finished leather is mainly determined by the reflection of the pile to light and the surface state of pile fibers. When light rays strike the surface of the pile collagen fibers, reflection and refraction are generated on the interface of the fibers and air simultaneously, one part of the light is reflected, and the other part of the light is refracted to reach the other interface in the collagen fibers and then is reflected and refracted. If the surface of the pile is smooth and the reflected light is parallel light, the pile shows strong luster; if the pile surface is rough and uneven, the reflected light is diffused in various directions at different angles, and the gloss of the pile is dark. The method can be distinguished from the following two aspects, namely, from the feeling, the requirements of fine and uniform pile, uniform and deep color and strong luster are met; secondly, the leather body is soft, the pile is smooth and has the same smooth feeling as silk in terms of hand feeling.
The invention also provides a preparation method of the mercerized fatliquor additive, which comprises the following steps:
(1) Weighing the raw materials according to parts by weight for later use;
(2) Preparing synthetic ester according to the method, adding the standby base oil, mineral oil, emulsifier SP-60, emulsifier O-15 and co-emulsifier into the synthetic ester, uniformly stirring, and reacting;
(3) And cooling, adding a flavoring agent and a bactericide, and keeping the temperature for 0.8-1.2h to obtain the mercerizing fatliquoring agent auxiliary agent.
Further, the reaction temperature in the step (2) is 50-55 ℃, and the reaction time is 1.5-2h.
Further, in the step (3), the temperature is reduced to 38-42 ℃.
The third purpose of the invention is to provide an application of the mercerized fatliquor additive in a leather fatliquoring process.
Compared with the prior art, the invention has the following beneficial effects:
(1) The mercerizing fatting agent auxiliary agent is used after the surface of leather is fatted, and is matched with a fatting agent for use, so that the dyeing depth can be increased, the color tone and the brightness can be increased, the dyeing uniformity can not be damaged, and silk-like hand feeling, elegant gloss and the two-way fluff effect of suede leather and frosted leather are endowed;
(2) The mercerizing fatting agent auxiliary agent contains ether bonds and longer carbon chains, can wrap pile fibers, endows the pile fibers with strong and soft gloss like silk, has smooth pile surfaces, shows strong gloss when reflected light is parallel light, and has strong mercerizing sense;
(3) The mercerizing fatting agent additive has the advantages of simple preparation method, low production cost and large-scale production, and the prepared mercerizing fatting agent additive has good stability and can be stored for a long time.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The mercerizing fatliquor additive provided by the embodiment comprises the following raw materials: 75kg of synthetic ester, 150SN 250kg of base oil, 50kg of 26# mineral oil, 6kg of emulsifying agent SP-6050kg, 1530kg of emulsifying agent O-1530kg of isoamyl alcohol, 0.4kg of flavoring agent and 1.2kg of BIT-20 bactericide.
Wherein the synthetic ester is prepared by the following method: purging the reaction kettle with nitrogen, removing air in the reaction kettle, adding hydrogenated oleic acid, polyethylene glycol 200 and a catalyst p-toluenesulfonic acid into the reaction kettle, uniformly mixing, wherein the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 1.9, the p-toluenesulfonic acid accounts for 6 per thousand of the mass of the synthetic ester, vacuumizing, heating to 115 ℃ for reaction, measuring the acid value in the reaction process, stopping the reaction when the acid value is less than 5mgKOH/g, otherwise, continuing the reaction until the acid value is less than 5mgKOH/g, and cooling to 50 ℃ to obtain the oily synthetic ester.
The preparation method of the mercerizing fatliquor additive provided by the embodiment specifically comprises the following steps:
(1) Weighing the raw materials according to the weight for later use;
(2) Adding the standby base oil 150SN, the standby mineral oil No. 26, the emulsifier SP-60, the emulsifier O-15 and the isoamylol into the synthetic ester, uniformly stirring, and reacting for 1.5 hours at the temperature of 50 ℃;
(3) And cooling to 38 ℃, adding a flavoring agent and a BIT-20 bactericide, and keeping the temperature for 0.8h to obtain the mercerizing fat-liquoring agent additive.
Example 2
The mercerizing fatliquor additive provided by the embodiment comprises the following raw materials: 97.5kg of synthetic ester, 250SN 225kg of base oil, 75kg of No. 26 mineral oil, SP-6040kg of emulsifier, O-1540kg of emulsifier, 5kg of isoamyl alcohol, 0.5kg of flavoring agent and 0.95kg of BIT-20 bactericide.
Wherein the synthetic ester is prepared by the following method: purging the reaction kettle with nitrogen, removing air in the reaction kettle, adding hydrogenated oleic acid, polyethylene glycol 200 and a catalyst p-toluenesulfonic acid into the reaction kettle, uniformly mixing, wherein the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 1.95, the p-toluenesulfonic acid accounts for 7 per thousand of the mass of the synthetic ester, vacuumizing, heating to 117 ℃ for reaction, measuring the acid value in the reaction process, stopping the reaction when the acid value is less than 5mgKOH/g, otherwise, continuing the reaction until the acid value is less than 5mgKOH/g, and cooling to 52 ℃ to obtain the oily synthetic ester.
The preparation method of the mercerizing fatliquor additive provided by the embodiment specifically comprises the following steps:
(1) Weighing the raw materials according to the weight for later use;
(2) Adding the standby base oil 250SN, the standby mineral oil No. 26, the emulsifying agent SP-60, the emulsifying agent O-15 and the isoamylol into the synthetic ester, uniformly stirring, and reacting for 1.75h at the temperature of 52 ℃;
(3) And cooling to 40 ℃, adding a flavoring agent and a BIT-20 bactericide, and keeping the temperature for 1h to obtain the mercerizing fatliquor additive.
Example 3
The mercerizing fatliquor additive provided by the embodiment comprises the following raw materials: 120kg of synthetic ester, 250kg of base oil 350SN, 100kg of No. 26 mineral oil, SP-6030kg of emulsifier, O-1550kg of emulsifier, 4kg of isoamyl alcohol, 0.6kg of flavoring agent and 0.7kg of BIT-20 bactericide.
Wherein the synthetic ester is prepared by the following method: purging the reaction kettle with nitrogen, removing air in the reaction kettle, adding hydrogenated oleic acid, polyethylene glycol 200 and a catalyst p-toluenesulfonic acid into the reaction kettle, uniformly mixing, wherein the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 2.0, the p-toluenesulfonic acid accounts for 8 per thousand of the mass of the synthetic ester, vacuumizing, heating to 120 ℃ for reaction, measuring the acid value in the reaction process, stopping the reaction when the acid value is less than 5mgKOH/g, otherwise, continuing the reaction until the acid value is less than 5mgKOH/g, and cooling to 55 ℃ to obtain the oily synthetic ester.
The preparation method of the mercerizing fatliquor additive provided by the embodiment specifically comprises the following steps:
(1) Weighing the raw materials according to the weight for later use;
(2) Adding the standby base oil 350SN, the standby mineral oil No. 26, the emulsifier SP-60, the emulsifier O-15 and the isoamylol into the synthetic ester, uniformly stirring, and reacting for 2 hours at the temperature of 55 ℃;
(3) And cooling to 42 ℃, adding a flavoring agent and a BIT-20 bactericide, and keeping the temperature for 1.2 hours to obtain the mercerizing fat-liquoring agent additive.
Example 4
The mercerizing fatliquor additive provided by the embodiment comprises the following raw materials: 100kg of synthetic ester, 150SN 230kg of base oil, 45kg of No. 26 mineral oil, SP-6045kg of emulsifier, O-1535kg of emulsifier, 5.5kg of isoamyl alcohol, 0.45kg of flavoring agent and 1.1kg of BIT-20 bactericide.
Wherein the synthetic ester is prepared by the following method: purging the reaction kettle with nitrogen, removing air in the reaction kettle, adding hydrogenated oleic acid, polyethylene glycol 200 and a catalyst p-toluenesulfonic acid into the reaction kettle, uniformly mixing, wherein the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 1.9, the p-toluenesulfonic acid accounts for 6 per thousand of the mass of the synthetic ester, vacuumizing, heating to 118 ℃ for reaction, measuring the acid value in the reaction process, stopping the reaction when the acid value is less than 5mgKOH/g, otherwise, continuing the reaction until the acid value is less than 5mgKOH/g, and cooling to 54 ℃ to obtain the oily synthetic ester.
The preparation method of the mercerizing fatliquor additive provided by the embodiment specifically comprises the following steps:
(1) Weighing the raw materials according to the weight for later use;
(2) Adding the standby base oil 150SN, the 26# mineral oil, the emulsifier SP-60, the emulsifier O-15 and the isoamylol into the synthetic ester, uniformly stirring, and reacting for 1.6 hours at the temperature of 51 ℃;
(3) And cooling to 40 ℃, adding a flavoring agent and a BIT-20 bactericide, and keeping the temperature for 1h to obtain the mercerizing fatliquor additive.
Test example 1
The mercerized fat liquor assistant prepared in examples 1 to 4 and a commercially available fat liquor assistant (referred to as comparative example 1) were applied according to a cowhide two-layer composite surface fat liquor process shown in table 1, the silky feel and the surface smoothness of the skin embryo were evaluated, the color of the skin embryo was observed with eyes, and whether the color saturation and vividness of the skin embryo could be increased or not was examined, and the results are shown in table 2.
TABLE 1
TABLE 2
As can be seen from the table 2, the auxiliary effect of the fat-liquoring agent prepared in the embodiments 1 to 4 of the invention is superior to that of the same products sold in the market, and the fat-liquoring agent has the advantages of simple preparation method, environmental protection and low price.
Test example 2
The mercerized fatliquor assistant prepared in examples 1 to 4 and a commercial fatliquor assistant (referred to as comparative example 1) were filled in glass bottles of the same specification in equal doses, and the appearance of the fatliquor was observed on day 0, 3 months, 6 months, 9 months, and 12 months under 40 degrees, and the results are shown in table 3.
TABLE 3
As can be seen from Table 3, the mercerizing fatliquor additive prepared by the method has more stable stability and better effect due to the similar products in the market.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The mercerizing fatliquor additive is characterized by comprising the following raw materials in parts by weight: 75-120 parts of synthetic ester, 200-250 parts of base oil, 50-100 parts of mineral oil, 30-50 parts of emulsifier SP-6030, 1530-50 parts of emulsifier O-1530, 4-6 parts of co-emulsifier, 0.4-0.6 part of flavoring agent and 0.7-1.2 parts of bactericide;
the synthetic ester is prepared by the following method: hydrogenated oleic acid, polyethylene glycol 200 and p-toluenesulfonic acid are mixed, reacted at the temperature of 115-120 ℃ under the vacuum condition, and cooled to 50-55 ℃ after the reaction is finished to obtain oily synthetic ester.
2. The mercerized fat-liquoring agent assistant according to claim 1, wherein the molar ratio of the hydrogenated oleic acid to the polyethylene glycol 200 is 1.9-2.0, and the p-toluenesulfonic acid accounts for 6-8 per mill of the mass of the synthetic ester.
3. The mercerized fatliquor assistant according to claim 1, wherein the acid value is measured during the reaction, and the reaction is stopped when the acid value is less than 5 mgKOH/g.
4. The mercerized fat-liquoring agent assistant according to claim 1, wherein the base oil is one or more of base oil 150SN, base oil 250SN and base oil 350 SN.
5. The mercerized fat-liquoring agent auxiliary agent according to claim 1, wherein the mineral oil is 26# mineral oil, the coemulsifier is isoamyl alcohol, and the bactericide is BIT-20 bactericide.
6. A process for the preparation of a mercerized fatliquor adjuvant according to any of claims 1-5, which comprises the following steps:
(1) Weighing the raw materials in parts by weight respectively for later use;
(2) Preparing synthetic ester according to the method of claim 1, adding the spare base oil, mineral oil, emulsifier SP-60, emulsifier O-15 and co-emulsifier into the synthetic ester, stirring uniformly, and reacting;
(3) And cooling, adding a flavoring agent and a bactericide, and keeping the temperature for 0.8-1.2h to obtain the mercerizing fatliquoring agent auxiliary agent.
7. The preparation method of the mercerized fatliquor assistant according to claim 6, wherein the reaction temperature in the step (2) is 50-55 ℃, and the reaction time is 1.5-2h.
8. The method for preparing the mercerizing fatliquor auxiliary agent according to claim 6, wherein the temperature in the step (3) is reduced to 38-42 ℃.
9. Use of a mercerized fatliquor adjuvant according to any one of claims 1-5 in a leather fatliquoring process.
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| CN114182049A (en) * | 2021-10-28 | 2022-03-15 | 上海金狮化工有限公司 | Mercerizing fatting agent and preparation method and application thereof |
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