阅读说明：本技术 一种温和型皮革脱脂剂及其制备方法 (Mild leather degreasing agent and preparation method thereof ) 是由 王楠 于 2020-04-28 设计创作，主要内容包括：本发明公开了一种温和型皮革脱脂剂及其制备方法,该温和型皮革脱脂剂配发体系中含有烷基糖苷配伍性能好,能与各种离子型、非离子型表面活性剂复配产生增效作用,烷基糖苷具有安全性、温和性和抗菌性的优势,本发明的的配方体系中含有的N-羟乙基椰油烷基酰胺是一种温和性的非离子表面活性剂,将其和椰子油脂肪酸二乙醇酰胺配合使用在不降低脱脂剂脱脂作用的同时,还减弱了脱脂剂的碱性从而降低了脱脂剂对皮革的损伤作用。异构C13醇聚氧乙烯醚的加入使得本发明的皮革脱脂剂具有极强的渗透力,可渗透到内部,从而获得更满意的柔软手感。珠光片的加入不仅使得本发明的皮革脱脂剂在常温下产生珠光光泽还能增加产品的粘度、抗静电。(The invention discloses a mild leather degreasing agent and a preparation method thereof, wherein a dispensing system of the mild leather degreasing agent contains alkyl glycoside which has good compatibility and can be compounded with various ionic and nonionic surfactants to generate a synergistic effect, and the alkyl glycoside has the advantages of safety, mildness and antibacterial property. The addition of the isomeric C13 alcohol polyoxyethylene ether ensures that the leather degreasing agent has extremely strong permeability and can permeate into the interior, thereby obtaining more satisfactory soft hand feeling. The addition of the pearly-lustre sheet not only enables the leather degreasing agent to generate pearly-lustre luster at normal temperature, but also can increase the viscosity and the antistatic property of the product.)

1. A mild leather degreasing agent is characterized in that: the leather degreasing agent comprises 5-10 parts by weight of alkyl glycoside, 5-10 parts by weight of coconut oil fatty acid diethanolamide, 2-6 parts by weight of pearly-lustre sheet, 5-10 parts by weight of N-hydroxyethyl coconut oil alkylamide, 5-10 parts by weight of isomeric C13 alcohol polyoxyethylene ether, 5-10 parts by weight of glycerol, 0.1-0.3 part by weight of citric acid, 0.3-0.5 part by weight of thickening agent, 0.01-0.1 part by weight of chelating agent and 30-60 parts by weight of water.

2. A mild leather degreaser according to claim 1, characterised in that: the alkyl glycoside is C8-16 alkyl glycoside.

3. A mild leather degreaser according to claim 1, characterised in that: the coconut oil fatty acid diethanolamide comprises the following components in a weight ratio of fatty acid to diethanolamide of 1: (2-6).

4. A mild leather degreaser according to claim 1, characterised in that: the pearly-lustre sheet comprises ethylene glycol distearate and ethylene glycol distearate, wherein the weight ratio of the ethylene glycol distearate to the ethylene glycol distearate is (1-3): 1.

5. a mild leather degreaser according to claim 1, characterised in that: the thickening agent is one of sodium chloride or potassium chloride.

6. A mild leather degreaser according to claim 1, characterised in that: the chelating agent is one of disodium ethylene diamine tetraacetate or tetrasodium ethylene diamine tetraacetate.

7. A mild leather degreaser according to any of claims 1-6, wherein: the preparation method of the leather degreasing agent comprises the following steps:

the method comprises the following steps: weighing a chelating agent, putting the chelating agent into a beaker filled with water, heating and stirring the chelating agent to be fully dissolved;

step two: weighing alkyl glycoside, coconut oil fatty acid diethanolamide, N-hydroxyethyl cocoalkylamide, isomeric C13 alcohol polyoxyethylene ether and glycerol, sequentially adding into the beaker in the step one, heating while stirring for heating and dissolving, and keeping the temperature;

step three: weighing the pearlescent flakes, adding the pearlescent flakes into the beaker in the second step, fully dissolving, cooling to 40-50 ℃, adding citric acid to adjust the pH to 7.2-7.5, and finally adding a thickening agent to adjust the viscosity to 50-60 Pa.s.

8. The mild leather degreaser of claim 7, wherein: in the first step, the heating temperature is 50-60 ℃, the stirring speed is 500-600rmp, and the time is 10-20 min.

9. The mild leather degreaser of claim 7, wherein: in the second step, the heating temperature is 70-80 ℃, the stirring time and the rotating speed are 300-400rmp, and the heat preservation time is 20-40 min.

Technical Field

The invention relates to the field of leather protection, in particular to a mild leather degreasing agent and a preparation method thereof.

Background

In the leather-making industry, a certain amount of fat exists in the raw material skin, if the leather-making process is not degreased, the penetration of leather-making process materials into the skin can be hindered, and fatty acid generated by grease hydrolysis can react with metal ions to form water-insoluble metal soap salt, which is not beneficial to dyeing treatment, so that the degreasing process generally runs through the wet operation stage of the whole leather-making process. The currently widely used method in industry is an emulsification degreasing method, the active ingredients of which are mainly surfactants, the cationic surfactants have low emulsification capacity and can be combined with collagen under the condition of high pH to lose the effect of emulsified oil, so the method is not suitable for degreasing agents, domestic degreasing agents usually use anionic and nonionic surfactants as main ingredients, and the used surfactants have good emulsification oil capacity and permeability and can permeate into skins of raw materials to deeply remove fat.

Disclosure of Invention

In order to solve the problems, the invention provides a mild leather degreasing agent and a preparation method thereof, the leather prepared by the method can reduce the damage of the degreasing agent to the leather under the condition of effective degreasing, the prepared leather is soft and is suitable for industrial large-scale production, and the technical method comprises the following steps:

the invention aims to provide a mild leather degreasing agent, which is technically characterized in that: the leather degreasing agent comprises 5-10 parts by weight of alkyl glycoside, 5-10 parts by weight of coconut oil fatty acid diethanolamide, 2-6 parts by weight of pearly-lustre sheet, 5-10 parts by weight of N-hydroxyethyl coconut oil alkylamide, 5-10 parts by weight of isomeric C13 alcohol polyoxyethylene ether, 5-10 parts by weight of glycerol, 0.1-0.3 part by weight of citric acid, 0.3-0.5 part by weight of thickening agent, 0.01-0.1 part by weight of chelating agent and 30-60 parts by weight of water.

In some embodiments of the invention, the alkyl glycoside is an alkyl glycoside having 8 to 16 carbon atoms.

In some embodiments of the invention, the coconut oil fatty acid diethanolamide comprises a coconut oil fatty acid diethanolamide wherein the weight ratio of fatty acid to diethanolamide is 1: (2-6).

In some embodiments of the present invention, the pearlescent sheet comprises ethylene glycol distearate and ethylene glycol distearate, and the weight ratio of the ethylene glycol distearate to the ethylene glycol distearate is (1-3): 1.

in some embodiments of the invention, the thickener is one of sodium chloride or potassium chloride.

In some embodiments of the present invention, the chelating agent is one of disodium ethylenediaminetetraacetate or tetrasodium ethylenediaminetetraacetate.

According to the formula, the preparation method of the mild leather degreasing agent comprises the following steps:

the method comprises the following steps: weighing a chelating agent, putting the chelating agent into a beaker filled with water, heating and stirring the chelating agent to be fully dissolved;

step two: weighing alkyl glycoside, coconut oil fatty acid diethanolamide, N-hydroxyethyl cocoalkylamide, isomeric C13 alcohol polyoxyethylene ether and glycerol, sequentially adding into the beaker in the step one, heating while stirring for heating and dissolving, and keeping the temperature;

step three: weighing the pearlescent flakes, adding the pearlescent flakes into the beaker in the second step, fully dissolving, cooling to 40-50 ℃, adding citric acid to adjust the pH to 7.2-7.5, and finally adding a thickening agent to adjust the viscosity to 50-60 Pa.s.

In some embodiments of the present invention, the heating temperature in the first step is 50-60 ℃, the stirring speed is 500-600rmp, and the time is 10-20 min.

In some embodiments of the invention, the heating temperature in the second step is 70-80 ℃, the rotation speed of the stirring time is 300-400rmp, and the heat preservation time is 20-40 min.

Compared with the prior art, the invention has the beneficial effects that:

the mild leather degreasing agent has the advantages that the compatibility of alkyl glycoside contained in the dispensing system is good, the alkyl glycoside can be compounded with various ionic and nonionic surfactants to generate a synergistic effect, the alkyl glycoside has the advantages of safety, mildness and antibacterial property, N-hydroxyethyl coco oil alkylamide contained in the dispensing system is a mild nonionic surfactant, and the N-hydroxyethyl coco oil alkylamide is matched with coconut oil fatty acid diethanolamide for use, so that the degreasing effect of the degreasing agent is not reduced, and the alkalinity of the degreasing agent is weakened, so that the damage effect of the degreasing agent on leather is reduced. The addition of the isomeric C13 alcohol polyoxyethylene ether ensures that the leather degreasing agent has extremely strong permeability and can permeate into the interior, thereby obtaining more satisfactory soft hand feeling. The addition of the pearly-lustre sheet not only enables the leather degreasing agent to generate pearly-lustre luster at normal temperature, but also can increase the viscosity and the antistatic property of the product. The stability of the leather degreasing agent is ensured by adding other materials.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.