CN106811556A - A kind of New-type adjuvant for blue leather wetting - Google Patents

Abstract

The invention provides a kind of New-type adjuvant for blue leather wetting, prevent the New-type adjuvant in the fried face of leather, and this New-type adjuvant usage.Contain organic acid compound, AEO surfactant, alkyl benzene sulfonate surfactant and calcium ions and magnesium ions chelate in this auxiliary agent.This auxiliary agent is used for the blue leather wetting operation of leather industry, blue skin is eased back the folding that disappears, and can chelate calcium and magnesium salts with reference to corium face and body lotion, makes leather hand feeling submissive happy, assists to prevent leather from frying face.Especially put rewetting of changing long to wet blue and disappear folding effect substantially.

Description

A kind of New-type adjuvant for blue leather wetting

Technical field

The present invention relates to a kind of auxiliary agent field of tanning production, it is more particularly related to a kind of auxiliary agent for blue leather wetting, and The usage of this auxiliary agent.

Background technology

Leather industry is used as traditional and modern industry, and the production, life with people are closely bound up.In order to meet the requirement in market, process hides Worker is devoted to improving always the quality of leather and fur products.In leather making process, the quality of leather is except quality, the leather used with raw material skin The quality of material, the factor such as superior of technique have outside the Pass, and the also grasp with each operation in technique has a very large relationship with control.

The rewetting of wet blue leather as dyeing and finishing part an important procedure, its quality to final leather products has important influence.Wet blue leather is returned It is wet whether abundant, absorption of the leather to chemical materials in body lotion is related to a certain extent, so as to affect the quality of leather.At present, in order to Reduce pollution to environment, beyond domestic many process hides producers or import wet blue be raw materials for production.These wet blue leathers by water squeezing, it is long when Between place or exposure stands in atmosphere, if storage is improper and occurring as soon as large quantity of moisture in wet blue leather and being lost in, collagenous fibres and chromium and collagenous fibres it Between combination increase, so as to cause wet blue leather to be hardened.If such wet blue leather cannot get preferable backwater, fried face fracture etc. just would tend to occur Phenomenon, badly influences the quality of finished leather.Meanwhile, the wet blue of tannery oneself production also likely to be present similar situation.Rewetting is whole Although very little in process hides process, it is easy to be ignored by tanners, its as one of basic operation in process hides, to leather The influence of quality can not look down upon.The main purpose of rewetting is that the wet blue leather after making the wet blue leather after water squeezing, shaving or placing for a long time is fully absorbed Moisture, makes water-filling between leather fiber, leather fiber evacuate, can mutually be slided between fiber and fiber, so, is conducive to operation afterwards In material used be wrapped in leather fiber surface moisture swap；Rewetting process can remove in leather base and surface neutral salt, shavings etc.； In addition, can adjust the condition such as pH value of different skin bases before retanning etc. by this operation, make the bar of different batches or the skin base of different sources production Part reaches unanimously, beneficial to the uniformity that gained leather in the operations such as follow-up dyeing retanning and stuffing is overall, prevents dyeing defect, aberration etc.；Together When, rewetting also play supplement degreasing effect, slough leather fiber on and fiber between the grease not removed completely or because machining is sticked in The oily substances such as the machine oil on leather, make leather fiber more conducively hydrophilic, beneficial to the abundant rewetting of wet blue leather.In a word, rewetting be for follow-up retanning, The operations such as dyeing are laid the groundwork, and the quality of wet blue leather rewetting effect affects absorption of the leather to chemical materials such as retanning agent, dyestuffs, so as to affect The quality and class of finished leather.Therefore rewetting could also say that more crucial operation in leather making process.

At present, domestic manufacturer mostly is rare simple, effective, the practical method and auxiliary agent for solving the stiff dead elephant of discounting of blue skin, only makes This problem is processed with some surfactants.But has there is more serious bonding between can not really solving fiber in this, i.e., can not really play back The effect of the wet folding that disappears.

The content of the invention

It is of the invention this to solve the above-mentioned problems in the prior art it is an object of the invention to provide a kind of auxiliary agent for blue leather wetting Rewetting additive performance is good, blue skin is eased back the folding that disappears, and can remove calcium and magnesium salts with reference to corium face, makes leather hand feeling submissive happy, Assistance prevents leather from frying face.

Auxiliary agent for blue leather wetting of the invention is composed of the following components by weight percentage：

(a) organic acid compound 52%~60%

(b) AEO surfactant 13%~20%

(c) alkyl benzene sulfonate surfactant 5%~15%

(d) calcium ions and magnesium ions chelate 10%~20%

Organic acid compound can provide low ph value, high degree of mechanical can be avoided to act on the damage to surface, and from assisting the absorption of chromium, it is to avoid The loss of chromium influences resultant leather quality amplification quantity high concentration chrome wastewater side by side during backwater, pollutes environment.

Surfactant can guarantee that good permeability, and dry blue skin can be made effectively to absorb moisture, fully unfold between fiber, and can take off Except the grease not removed completely or because machining sticks in the oily substances such as the machine oil on leather, make leather fiber more conducively hydrophilic, beneficial to blue leather wetting mistake Journey.

Calcium ions and magnesium ions chelate can chelate unnet calcium ions and magnesium ions in material body lotion and skin sample, and not only demineralized water is more beneficial for blue leather wetting water suction, Also ensure that leather softness grain is careful.

Specific embodiment

With reference to the composition and application method contained by this auxiliary agent, by embodiment, the present invention is further described.

Embodiment 1

A kind of auxiliary agent for blue leather wetting, its composition constitutes and is：Adipic acid 52%, paregal O -1513%, DBSA Sodium 15%, sodium tripolyphosphate 20% is sufficiently mixed after grinding.Rewetting operation is carried out to being allowed to dry hard indigo plant skin long by following technique, and Experimental Comparison is carried out with conventional rewetting auxiliary agent such as peregal, penetrating agent JFC, degreasing agent etc..

Added material usage is based on the quality of pigskin shaving wet blue leather

Rinsing or rewetting 32~38 DEG C of 200% temperature of distillation

Formic acid (85%) 0.3%

40~the 60min of rewetting auxiliary agent 0.7%

Wash and check backwater situation

Rewetting auxiliary agent described in technique refer to peregal, penetrating agent JFC, degreasing agent and the present invention auxiliary agent carried out using same process respectively it is right Than.

Embodiment 2

A kind of auxiliary agent for blue leather wetting, its composition constitutes and is：Nitration mixture 55%, paregal O -2015%, neopelex 15%, sodium tripolyphosphate 15% is sufficiently mixed after grinding.Technique carries out Experimental Comparison as described in embodiment 1.

Claims (2)

1. a kind of New-type adjuvant for blue leather wetting, prevents the New-type adjuvant in the fried face of leather, it is characterized in that：Exist with solid, powdery, and by weight Amount percentage is made up of following four component：

(a) organic acid compound 52%~60%

(b) AEO surfactant 13%~20%

(c) alkyl benzene sulfonate surfactant 5%~15%

(d) calcium ions and magnesium ions chelate 10%~20%

Described organic acid compound is selected from one of following：Succinic acid, glutaric acid, adipic acid, suberic acid.

2. the New-type adjuvant of term blue leather wetting according to claim 1, it is characterised in that described AEO surfactant choosing From one of following：Paregal O -15, paregal O -20, paregal O S-20；Described alkyl benzene sulfonate surfactant is：Ten Dialkyl benzene sulfonic acids sodium；Described calcium ions and magnesium ions chelate is selected from one of following：Sodium tripolyphosphate, sodium orthophosphate, sodium pyrophosphate, six Sodium metaphosphate.