CN106811557A - A kind of New-type adjuvant for leather pickling procedure - Google Patents
A kind of New-type adjuvant for leather pickling procedure Download PDFInfo
- Publication number
- CN106811557A CN106811557A CN201510856103.2A CN201510856103A CN106811557A CN 106811557 A CN106811557 A CN 106811557A CN 201510856103 A CN201510856103 A CN 201510856103A CN 106811557 A CN106811557 A CN 106811557A
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- CN
- China
- Prior art keywords
- leather
- new
- type adjuvant
- pickling
- pickling procedure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- 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
- C14C3/02—Chemical tanning
Abstract
The invention provides a kind of New-type adjuvant for leather pickling procedure, 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 pickling procedure of leather industry, can effectively improve the absorption of chromium, reduces the use of chromium powder, while the effect of having raising leather yield of leather and tensile strength.The mechanism of height can be avoided in low ph value to the damage of surface, solidity, careful property and the flexibility of grain side of leather can be also improved.Skin sample effect especially unnet to preceding operation deliming is obvious.
Description
Technical field
The present invention relates to a kind of New-type adjuvant field of tanning production, it is more particularly related to a kind of for the new of leather pickling procedure
Type auxiliary agent, and this New-type adjuvant usage.
Background technology
Leather pickling pickling procedure is a more important operation, and leather is by operations such as liming delimings so that fiber is unfolded in rawhide,
There is provided the precondition of tanning, but preceding operation there may be that deliming is not net, the problem that fiber cannot fully unfold, if without pickling
Operation, it is understood that there may be the finished leather yield of leather of tanning diminishes, leather calcium ions and magnesium ions are high and the problems such as hardening, resultant leather quality class is all greatly reduced.
Below 3.2, now pH easily produces acid plumping to pickling pH less than the isoelectric point of pelt in process hides.In existing technique,
Generally suppress pickling process and the acid plumping that may cause in Chrome Tanning Process using the salt of 12%~14% (by raw hide restatement).This is again
The salt in tanning sewage and pollution of chromium are increased, the objective of current environmental protection cleaner leather-making production is not met, according to statistics, produced during pickling
Neutral salt, 30%~40% of neutral salt in tanning sewage can be accounted for.The salt pollution and pollution of chromium for reducing or eliminating pickling chrome tanning process are existing ranks
The important step that Duan Shixian leather cleanings metaplasia is produced.Little is being changed to existing process, is being soaked in the case of traditional wet blue leather performance is not influenceed
Sour chrome tanning process reduces or eliminates the pollution of salt and chromium by auxiliary agent, is always a direction of many process hides scientific worker researchs.
The content of the invention
It is an object of the invention to provide a kind of New-type adjuvant for leather pickling procedure, to solve the above-mentioned problems in the prior art, this hair
Bright this auxiliary pickling agent performance is good, is used during pickling, can improve the absorption of chromium, reduces the use of chromium powder, reduces pollution, and
Yield of leather and tensile strength etc. can be improved, the mechanism of height can be avoided to the damage of surface, improve into the solidity of grain, careful property
And flexibility.
New-type adjuvant for blue leather wetting of the invention is composed of the following components by weight percentage：
(a) organic acid compound 50%~70%
(b) AEO surfactant 0%~20%
(c) alkyl benzene sulfonate surfactant 5%~10%
(d) calcium ions and magnesium ions chelate 0%~20%
According to the characteristics of pickling process, various raw materials of reasonably arranging in pairs or groups effectively play the performance of various raw materials to the auxiliary agent of the present invention.Organic acid
Compound mainly selects binary organic carboxyl acid, and its effect is to provide low ph value, and high degree of mechanical can be avoided to act on the damage to surface, and in itself
Also have after the carboxyl for containing, is combined during pickling with the amino in collagenous fibres, and the moderate chain length of dicarboxylic acids is combined with collagenous fibres
The evacuation expansion for assisting fiber in leather of effect so that leather rate is improved.Crosslinking points of the chromium in leather are increased again simultaneously, pre-tanning effect is played.
There is stronger binding ability with the trivalent chromium in chrome tanning agent in subsequent Chrome Tanning Process, effectively chromium can be fixed in leather, improve the suction of chromium
Receive, be difficult to wash away.The use of chrome tanning agent thus can be reduced, and avoid chromium influences resultant leather quality amplification quantity side by side from the loss in leather
High concentration chrome wastewater, pollutes environment.Simultaneously as improve the absorption of chromium, tanning effect is enhanced, and tensile strength of finished leather etc. is increased.
The carboxyl of calcium ions and magnesium ions chelate and organic carboxyl acid has good chelation to calcium ions and magnesium ions, before can chelating in material body lotion and skin sample
The un-cleared calcium ions and magnesium ions of operation, make leather softness and grain are careful, and feel is submissive happy.
The collocation of nonionic and anion surfactant accelerates pickling speed using can guarantee that good permeability, assists various materials in body lotion
Absorption, help fully dispersed unfold between leather collagen fiber so that the yield of leather of finished leather has obtained certain raising.Pickled skin is caused simultaneously
The further left and right in subsequent Chrome Tanning Process, the pliability of blue skin obtained after tanning, the flat fineness of grain, graining definition and tensile strength are all
Increase.
Specific embodiment
With reference to the composition and application method contained by this New-type adjuvant, by embodiment, the present invention is further described.
Embodiment 1
A kind of New-type adjuvant for leather pickling procedure, its composition constitutes and is：Glutaric acid 60%, paregal O -1510%, dodecane
Base benzene sulfonic acid sodium salt 10%, segregation sodium phosphate 20% is sufficiently mixed after grinding.Pickling procedure is carried out to leaching tannage by following technique, and
Experimental Comparison is carried out with auxiliary pickling agent is not used.
Added material usage is based on the quality removed from office in pigskin leaching nitre
Leaching tannage is weighed：1.8mm ± 0.2mm (bilayer)
The vexed washing of the washing normal temperature of distilled water 300% one time 5 '
Soften 100% 35 DEG C of distilled water
The pH7.5-8.0 of 2 CO of Na, 3 0.5+0.6% 10 '
Macerating enzyme SO 2.0%
The Cl 0.5% of NH 4
Degreasing agent FB stops 30 ' for 0.5% turn 60 '
Turn 90 ' and stop 30 '
Turn 60 ' rear washings again
50 skins are chosen, skin upwards, left and right is cut off unanimously from rear buttocks by the inside forward, the split of area identical two, and respectively with R1,
L1；R2, L2......R50, L50 mark respectively, and the split of the left side half adds 1# rotary drums, the split of the right half to add 2# rotary drums, plus
Entering auxiliary pickling agent carries out contrast test, wherein, 1# rotary drums are not added with auxiliary pickling agent, and 2# rotary drums add auxiliary pickling agent
100% 20 DEG C of pickling distilled water
Salt 10% 15 '
The 1# rotary drums pH2.8 of 2 SO 4 (20: 1) of H 1.0% ±
(2# rotary drums add 2 SO of H to add 1.0% auxiliary pickling agent after 4 30 minutes) 2# rotary drums pH3.0 ±
Chromium powder 4.0% 30 '
Chromium powder 6.0% 120 '
Sodium formate 1.0% 30 '
Sodium bicarbonate 1.3% 4 × 15 '+60 '
1# rotary drums pH4.0 ±, 2# rotary drums pH3.9 ±
Temperature stops drum for 40 DEG C 120 ' in heating water 100%
After washing out drum, gained wet blue carries out area contrast with the left half skin of a skin with right half skin, and by feel, waste water total hardness
Further evaluated etc. index.
Result is as follows：
1st, it is average to increase chi 0.5% after adding auxiliary pickling agent by measuring area.
2nd, after adding auxiliary pickling agent, grain side of leather is cleaner, clear, careful.
3rd, more preferably, waste liquid is more clear for the absorptivity of chromium.
4th, further degreasing and calcium ions and magnesium ions from pickled skin, make leather more soft, and fineness is more preferable.After adding auxiliary pickling agent, its waste liquid
Middle hardness is 10.44mg/L, and does not add auxiliary pickling agent, and hardness is 6.62mg/L in waste liquid.
Claims (2)
1. a kind of New-type adjuvant for leather pickling procedure, it is characterised in that exist with solid, powdery, be made up of following four component：
(a) organic acid compound 50%~60%
(b) AEO surfactant 10%~20%
(c) alkyl benzene sulfonate surfactant 5%~10%
(d) calcium ions and magnesium ions chelate 20%
Described organic acid compound is selected from one of following：Glutaric acid, adipic acid, suberic acid.
2. the New-type adjuvant for leather pickling procedure according to claim 1, it is characterised in that described AEO surfactant composition, selected from one of following：Paregal O -15, paregal O -20；Described alkyl benzene sulfonate surfactant is：Neopelex；Described calcium ions and magnesium ions chelate, selected from one of following：Sodium tripolyphosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium orthophosphate, sodium pyrophosphate, calgon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856103.2A CN106811557A (en) | 2015-11-29 | 2015-11-29 | A kind of New-type adjuvant for leather pickling procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856103.2A CN106811557A (en) | 2015-11-29 | 2015-11-29 | A kind of New-type adjuvant for leather pickling procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106811557A true CN106811557A (en) | 2017-06-09 |
Family
ID=59156404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510856103.2A Pending CN106811557A (en) | 2015-11-29 | 2015-11-29 | A kind of New-type adjuvant for leather pickling procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106811557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232891A (en) * | 2022-07-28 | 2022-10-25 | 四川大学 | Leather-making ammonium-free deliming agent with grain surface protection function and deliming method |
-
2015
- 2015-11-29 CN CN201510856103.2A patent/CN106811557A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232891A (en) * | 2022-07-28 | 2022-10-25 | 四川大学 | Leather-making ammonium-free deliming agent with grain surface protection function and deliming method |
| CN115232891B (en) * | 2022-07-28 | 2023-07-18 | 四川大学 | Tanning ammonium-free de-ashing agent with grain surface protection function and de-ashing method |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170609 |
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| WD01 | Invention patent application deemed withdrawn after publication |