Degreaser and preparation method and application thereof

Abstract

The invention relates to the technical field of animal fur treatment and in particular relates to a degreaser and a preparation method and an application thereof. The degreaser is prepared from the following components in parts by weight: 20-40 parts of higher aliphatic alcohol, 30-100 parts of an organic solvent, 8-30 parts of fuming sulphuric acid, 5-15 parts of sodium hydroxide and / or potassiumhydroxide, 40-80 parts of a nonionic surfactant and 60-120 parts of water. The degreaser is prepared by the following step: by taking the environment-friendly organic solvent as a medium, compoundingan anionic surfactant formed through synthesis of higher aliphatic alcohol and fuming sulphuric acid with other nonionic surfactants and compounding the organic solvent with the surfactant and waterto obtain a microemulsion degreaser. The organic solvent in the degreaser exists stably. When the oleophilic organic solvent exists in a surfactant aqueous solution in a microemulsion state, the organic solvent and the surfactant are cooperated to enable the fat removal effect to reach a great extent, so that grease in fur can be removed effectively.

Description

technical field

[0001] The invention relates to the technical field of animal fur treatment, in particular to a degreasing agent and its preparation method and application. Background technique

[0002] In fur processing, degreasing is an extremely critical process for fur with high oil content. Only by removing the natural oil contained in the bare leather to a certain extent, can the collagen fibers be loosened, creating favorable conditions for the smooth progress of the subsequent tanning and other processes, so that the finished leather can reach an ideal state, otherwise due to the natural oil contained in the leather plate Water repellency will make the subsequent tanning, fatliquoring, dyeing, finishing and other processes difficult to proceed smoothly, resulting in stiff handle of the finished leather, strong greasy surface, and easy peeling off of the coating. Therefore, for sheepskin and pigskin with higher oil content, better degreasing materials must be selecte...

Examples

Embodiment 1

[0046] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0047] (1) add water 30kg in reactor A, add sodium hydroxide 8kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0048] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 10kg, fatty alcohol polyoxyethylene ether (AEO7) 30kg, coconut oil fatty acid diethanolamide 16kg and white spirit (D60) 30kg in reactor B, mix and stir for 20min Finally, add 30 kg of stearyl alcohol and stir to dissolve it; under the condition of slow stirring, add 15 kg of oleum dropwise, control the temperature below 35°C, and continue stirring for 45 minutes to obtain the material a ;

[0049] (3) Add 60 kg of ice to the reactor A, add 30 kg of white spirit (D60) to it under agitation, then slowly drop the material a obtained in step (2) into the reactor A, and control the temperature≤45 ℃, after the dropwise addition, stir the reaction for 30 minutes, let it...

Embodiment 2

[0051] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0052] (1) add water 25kg in reactor A, add sodium hydroxide 7kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0053] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 30kg, fatty alcohol polyoxyethylene ether (AEO7) 25kg and white spirit (D60) 30kg in reactor B, after mixing and stirring for 20min, add stearyl alcohol 28kg, Stir to make it dissolve; under the condition of slow stirring, add 12kg of oleum dropwise, control the temperature below 35°C, after the addition of oleum is completed, continue to stir for 45min to obtain material a;

[0054] (3) Add 60 kg of ice to the reactor A, add 30 kg of white spirit (D60) to it under agitation, then slowly drop the material a obtained in step (2) into the reactor A, and control the temperature≤45 ℃, after the dropwise addition, stir the reaction for 30 minutes, let it stand, and disc...

Embodiment 3

[0056] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0057] (1) add water 35kg in reactor A, add sodium hydroxide 9kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0058] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 33kg, fatty alcohol polyoxyethylene ether (AEO7) 18kg, coconut oil fatty acid diethanolamide 14kg and white spirit (D60) 35kg in reactor B, mix and stir for 20min Finally, add 32 kg of stearyl alcohol and stir to dissolve it; under the condition of slow stirring, add 18 kg of oleum dropwise, and control the temperature below 35°C. After the addition of oleum is completed, continue stirring for 45 minutes to obtain material a ;

[0059] (3) Add ice 60kg in reactor A, add white spirit (D60) 35kg therein under agitation condition, then slowly add the material a obtained in step (2) in reactor A, control temperature≤45 ℃, after the dropwise addition, stir the reaction...

technical field

[0001] The invention relates to the technical field of animal fur treatment, in particular to a degreasing agent and its preparation method and application. Background technique

[0002] In fur processing, degreasing is an extremely critical process for fur with high oil content. Only by removing the natural oil contained in the bare leather to a certain extent, can the collagen fibers be loosened, creating favorable conditions for the smooth progress of the subsequent tanning and other processes, so that the finished leather can reach an ideal state, otherwise due to the natural oil contained in the leather plate Water repellency will make the subsequent tanning, fatliquoring, dyeing, finishing and other processes difficult to proceed smoothly, resulting in stiff handle of the finished leather, strong greasy surface, and easy peeling off of the coating. Therefore, for sheepskin and pigskin with higher oil content, better degreasing materials must be selecte...

Examples

Embodiment 1

[0046] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0047] (1) add water 30kg in reactor A, add sodium hydroxide 8kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0048] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 10kg, fatty alcohol polyoxyethylene ether (AEO7) 30kg, coconut oil fatty acid diethanolamide 16kg and white spirit (D60) 30kg in reactor B, mix and stir for 20min Finally, add 30 kg of stearyl alcohol and stir to dissolve it; under the condition of slow stirring, add 15 kg of oleum dropwise, control the temperature below 35°C, and continue stirring for 45 minutes to obtain the material a ;

[0049] (3) Add 60 kg of ice to the reactor A, add 30 kg of white spirit (D60) to it under agitation, then slowly drop the material a obtained in step (2) into the reactor A, and control the temperature≤45 ℃, after the dropwise addition, stir the reaction for 30 minutes, let it...

Embodiment 2

[0051] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0052] (1) add water 25kg in reactor A, add sodium hydroxide 7kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0053] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 30kg, fatty alcohol polyoxyethylene ether (AEO7) 25kg and white spirit (D60) 30kg in reactor B, after mixing and stirring for 20min, add stearyl alcohol 28kg, Stir to make it dissolve; under the condition of slow stirring, add 12kg of oleum dropwise, control the temperature below 35°C, after the addition of oleum is completed, continue to stir for 45min to obtain material a;

[0054] (3) Add 60 kg of ice to the reactor A, add 30 kg of white spirit (D60) to it under agitation, then slowly drop the material a obtained in step (2) into the reactor A, and control the temperature≤45 ℃, after the dropwise addition, stir the reaction for 30 minutes, let it stand, and disc...

Embodiment 3

[0056] The preparation method of the degreasing agent described in the present embodiment, the steps are as follows:

[0057] (1) add water 35kg in reactor A, add sodium hydroxide 9kg, stir until dissolving, obtain the aqueous solution of sodium hydroxide;

[0058] (2) Add fatty alcohol polyoxyethylene ether (AEO9) 33kg, fatty alcohol polyoxyethylene ether (AEO7) 18kg, coconut oil fatty acid diethanolamide 14kg and white spirit (D60) 35kg in reactor B, mix and stir for 20min Finally, add 32 kg of stearyl alcohol and stir to dissolve it; under the condition of slow stirring, add 18 kg of oleum dropwise, and control the temperature below 35°C. After the addition of oleum is completed, continue stirring for 45 minutes to obtain material a ;

[0059] (3) Add ice 60kg in reactor A, add white spirit (D60) 35kg therein under agitation condition, then slowly add the material a obtained in step (2) in reactor A, control temperature≤45 ℃, after the dropwise addition, stir the reaction...

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