CN102399915B - Environment-friendly raw skin preservative and preparation method thereof - Google Patents
Environment-friendly raw skin preservative and preparation method thereof Download PDFInfo
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- CN102399915B CN102399915B CN 201110309523 CN201110309523A CN102399915B CN 102399915 B CN102399915 B CN 102399915B CN 201110309523 CN201110309523 CN 201110309523 CN 201110309523 A CN201110309523 A CN 201110309523A CN 102399915 B CN102399915 B CN 102399915B
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Abstract
The invention discloses an environment-friendly raw skin preservative and a preparation method thereof. The preservative comprises the following component raw materials in percentage by weight: 42-61% of sodium chloride, 16-27% of polyvinyl alcohol, 16-27% of polyethylene glycol, 0.5-5% of polypropylene glycol, 0.5-5% of polytetrahydrofuran ether glycol and 0.5-2% of polyacrylamide, and the sum of weight percentages is 100%, wherein the molecular weight of polyvinyl alcohol is 25000-35000, the molecular weight of polyethylene glycol is 1000-10000, the molecular weight of polypropylene glycol is 400-2000, and the molecular weight of polytetrahydrofuran ether glycol is 600-2000. The preservative provided by the invention has small usage amount, is safe and nontoxic and can be biologically degraded, the total dissolved solids (TDS) and chloride pollution in tanning waste water can be greatly lowered, and no negative effect is produced on following tanning process.
Description
Technical field
The invention belongs to the leather preservative technical field, be specifically related to a kind of Novel non-toxic environmental protection, biodegradable, few salt raw skin preservative with good preservative effect.
Background technology
In process hides, rawhide can just put into production after storage and transport after a while usually.Contain 60%～70% moisture and 25%～30% protein in raw hide, for bacterium provides good growth and breeding environment.As not taking anti-corrosion measure, raw hide will rot because of the effect of bacterium erosion and himself " autolytic enzyme " in the preservation process.In the soaking of hide or skin process, when temperature was higher, a large amount of bacterium Fast-propagations also corroded raw hide especially, and the lighter affects resultant leather quality, and the serious skin that will make rots, thereby causes huge financial loss.Therefore, anticorrosion is requisite operation in process hides.
The anticorrosion of raw material skin is generally to process to reduce intracutaneous moisture content, temperature, pH value by physics or chemical process, thereby causes a kind of environment that is not suitable for the bacterial growth breeding inside and outside rawhide, to reach the rot-resistant purpose.Anti-corrosion method commonly used has salted method, desiccating method, Cryopreservation of Viable and pickling method, and its medium salting method is easy and simple to handle owing to having, process stabilizing, with low cost and preservative effect outstanding feature are widely used in tanning industry.But the leather-making mud that contains neutral salt (as sodium-chlor) that produces and the improvement of waste water are the huge difficult problems that tanning industry is faced always, and the waste water of rough purification are used for irrigate crops in the past and can have a strong impact on the eubolism of crop normal growth, the animal of upsetting environment and microorganism and cause the Soil Secondary salinization.In the last few years; raising along with people's environmental consciousness; the appearance of more and more stricter National Environment Policy Act rule, and contain the leather-making mud of neutral salt and the emission problem of waste water receives much concern, develop a kind of salt-free/lack salt and cheap sanitas imperative.
More existing relevant leather preservative patents are open in recent years, disclose a kind of multifunctional anticorrosive agent as CN101157957A, and it is comprised of sodium-chlor, sodium carbonate, sulphite, Sodium Silicofluoride, refined naphthalene and Trichlorphon.Also reported some sanitass in document, mainly contained Sodium Pyrosulfite, silicate, boric acid, Benzalkonium Chloride 80(BKC80) etc., these Chemical Preservatives are the same with salt, have simultaneously dehydration and antibacterial two kinds of functions, and preservative effect is preferably arranged.But they have toxicity in various degree basically, do not meet the demand of public's environmental protection and safety.
Polyvinyl alcohol (PVA), polyoxyethylene glycol (PEG), polypropylene glycol (PPG), PTMG (PTMG) and polyacrylamide (PAM) are all nontoxic, biodegradable high molecular polymers, its end is all hydroxyl, has good wetting ability.The polymkeric substance that these wetting abilities are good and protein are done the used time and can be produced very high osmotic pressure, thereby make protein a large amount of dehydrations rapidly; In addition, can also form protective layer at protein surface, stop the surface adsorption invasion of bacterium and the degraded of enzyme, reach antibacterial effect.Zhang Guangzhao etc. based on this mechanism take polyoxyethylene glycol as main raw material has prepared a series of efficient marine antifoulants, this product can effectively prevent the absorption alow such as the microorganism, bacterium, marine alga in the ocean.And yet there are no patent and bibliographical information about polymkeric substance such as PVA in the research of protein corrosion-resistant field.
The invention provides a kind of environment-friendly type raw skin preservative and preparation method thereof.This sanitas is the biodegradable few salt raw skin preservative of a kind of safety non-toxic, have good preservative effect, and the preparation method is simple, and profit margin is large.This sanitas mainly can be used for rawhide anticorrosion in the anticorrosion and immersion of process hides workshop section, and market capacity is large, has good application prospect.
Summary of the invention
The invention provides raw skin preservative of a kind of environmental protection and preparation method thereof.It is raw material that this sanitas mainly adopts the biodegradable polymkeric substance of safety non-toxic, when reaching the preservative effect that needs, has not only avoided the toxicity of general Chemical Preservative, and can effectively reduce high TDS and chloride contamination in salted method.The present invention is achieved through the following technical solutions, and except specifying, related umber is parts by weight, and per-cent is weight percentage.
To achieve these goals, the present invention realizes by the following technical solutions: the preparation method of this sanitas is for taking respectively in proportion a certain amount of sodium-chlor, polyvinyl alcohol, polyoxyethylene glycol, polypropylene glycol, PTMG, polyacrylamide, then mix and be ground into powder, namely get the environment-friendly type raw skin preservative.Wherein, the weight percentage of each component consists of sodium-chlor 42～61%, polyvinyl alcohol 16～27%, polyoxyethylene glycol 16～27%, polypropylene glycol 0.5～5%, PTMG 0.5～5%, polyacrylamide 0.5～2%, and it is 100% that above-mentioned each percentage ratio forms the weight sum.
In preparation method described above, the molecular weight of polyvinyl alcohol is 25000～35000, and the molecular weight of polyoxyethylene glycol is 1000～10000, and the molecular weight of polypropylene glycol is 400～2000, and the molecular weight of PTMG is 600～2000.
Sanitas of the present invention can be used for the anticorrosion of the anticorrosion and immersion of process hides workshop section rawhide, and the consumption of sanitas be rawhide 8%～12% the time can reach preservative effect preferably.
Compared with the prior art, adopt the sanitas of the present invention's preparation to have the following advantages:
(1) adopt the biodegradable hydrophilic high molecular polymer of safety non-toxic, have and pollute less, cost is low, and the characteristics of favorable anti-corrosion effect are used it for raw hide anticorrosion, has expanded the leather-making technology new visual field;
(2) hydrophilic polymer/sodium-chlor is a kind of few salt sanitas, has not only avoided the toxicity of general Chemical Preservative, and can effectively reduce high TDS and chloride contamination in salted method, can effectively realize cleaning of the anticorrosion workshop section of rawhide in process hides;
(3) use of the few salt sanitas of hydrophilic polymer/sodium-chlor does not need to introduce new tanning equipment, can use under original leather-making technology and facility, can not affect the over-all properties of finished leather yet.
Specific implementation method
The below provides three embodiment of the present invention; be necessary to be pointed out that at this; embodiment only is used for the present invention is further detailed; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above.
In following examples, except specifying, related umber is parts by weight, and per-cent is weight percentage.
Embodiment one
At first weighing 5kg sodium-chlor, 1.5kg polyvinyl alcohol-25000,1.5kg PEG-4000,0.5kg polypropylene glycol-2000,0.5kg PTMG-2000,0.2kg polyacrylamide, then raw material is mixed and is ground into powder, namely get the environment-friendly type raw skin preservative.This sanitas is evenly spread upon on the flesh noodles of the bright sheepskin of 100kg, then hide flesh noodles and flesh noodles are close to and are folded, can have good preservative effect.
Embodiment two
At first weighing 5kg sodium-chlor, 1.5kg polyvinyl alcohol-35000,1.5kg PEG-4000,0.5kg polypropylene glycol-1000,0.5kg PTMG-1000,0.2kg polyacrylamide, then raw material is mixed and is ground into powder, namely get the environment-friendly type raw skin preservative.This sanitas is evenly spread upon on the flesh noodles of the bright sheepskin of 100kg, then hide flesh noodles and flesh noodles are close to and are folded, can have good preservative effect.
Embodiment three
At first weighing 5kg sodium-chlor, 3kg polyvinyl alcohol-25000,3kg PEG-4000,0.1kg polypropylene glycol-2000,0.1kg PTMG-2000,0.1kg polyacrylamide, then raw material is mixed and is ground into powder, namely get the environment-friendly type raw skin preservative.This sanitas is evenly spread upon on the flesh noodles of the bright sheepskin of 100kg, then hide flesh noodles and flesh noodles are close to and are folded, can have good preservative effect.
Claims (4)
1. environment-friendly type raw skin preservative, the weight percentage that it is characterized in that each component raw material consists of sodium-chlor 42～61%, polyvinyl alcohol 16～27%, polyoxyethylene glycol 16～27%, polypropylene glycol 0.5～5%, PTMG 0.5～5%, polyacrylamide 0.5～2%, and it is 100% that above-mentioned each percentage ratio forms the weight sum.
2. environment-friendly type raw skin preservative according to claim 1, it is characterized in that the preparation method is as follows: take respectively in proportion a certain amount of sodium-chlor, polyvinyl alcohol, polyoxyethylene glycol, polypropylene glycol, PTMG, polyacrylamide, then mix and be ground into powder, namely get the environment-friendly type raw skin preservative.
3. environment-friendly type raw skin preservative according to claim 1, the molecular weight that it is characterized in that described polyvinyl alcohol is 25000～35000, the molecular weight of polyoxyethylene glycol is 1000～10000, and the molecular weight of polypropylene glycol is 400～2000, and the molecular weight of PTMG is 600～2000.
4. environment-friendly type raw skin preservative according to claim 1 is characterized in that described environment-friendly type raw skin preservative can be used for the anticorrosion of raw hide in leather industry.
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| CN 201110309523 CN102399915B (en) | 2011-10-13 | 2011-10-13 | Environment-friendly raw skin preservative and preparation method thereof |
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| CN 201110309523 CN102399915B (en) | 2011-10-13 | 2011-10-13 | Environment-friendly raw skin preservative and preparation method thereof |
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| CN102399915B true CN102399915B (en) | 2013-06-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103555447A (en) * | 2013-10-30 | 2014-02-05 | 合肥市华美光电科技有限公司 | Water-based computer printed circuit board cleaning agent and preparation method thereof |
| CN103540424A (en) * | 2013-10-30 | 2014-01-29 | 合肥市华美光电科技有限公司 | Waterborne printed circuit board cleaning agent and preparation method thereof |
| CN103540462A (en) * | 2013-10-30 | 2014-01-29 | 合肥市华美光电科技有限公司 | Water-based acid printed circuit board cleaning agent and preparation method thereof |
| CN103555455A (en) * | 2013-10-30 | 2014-02-05 | 合肥市华美光电科技有限公司 | Weak-acidity printed circuit board cleaning agent and preparation method thereof |
| CN103525586A (en) * | 2013-10-30 | 2014-01-22 | 合肥市华美光电科技有限公司 | Printed circuit board cleaning agent and preparation method thereof |
| CN103525568A (en) * | 2013-10-30 | 2014-01-22 | 合肥市华美光电科技有限公司 | Comprehensive printed circuit board cleaning agent and preparation method thereof |
| CN103540426A (en) * | 2013-10-30 | 2014-01-29 | 合肥市华美光电科技有限公司 | Waterborne printed circuit board cleaning agent and preparation method thereof |
| CN103555442A (en) * | 2013-10-30 | 2014-02-05 | 合肥市华美光电科技有限公司 | Aqueous computer printed circuit board cleaning agent and preparation method thereof |
| US20150361514A1 (en) * | 2014-06-17 | 2015-12-17 | The United States Of America, As Represented By The Secretary Of Agriculture | Methods For Preserving Untanned Animal Hides |
| CN114532470A (en) * | 2022-03-07 | 2022-05-27 | 嵇友亚 | Environment-friendly preservative and preparation method thereof |
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| US4465802A (en) * | 1982-10-26 | 1984-08-14 | Union Carbide Corporation | Process for treating furred animal pelts and/or fur |
| CN101176446A (en) * | 2006-11-10 | 2008-05-14 | 宋小芳 | Novel mildew resistant tablet and preparation method thereof |
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|---|---|---|---|---|
| GB9120652D0 (en) * | 1991-09-27 | 1991-11-06 | Albright & Wilson | Use of phosphonium compounds in the preparation of leather |
| CN1168924A (en) * | 1997-06-21 | 1997-12-31 | 赵志刚 | Cream for dry cleaning and finishing surface of leather |
| WO2003021031A1 (en) * | 2001-09-01 | 2003-03-13 | Rhodia Consumer Specialties Limited | Phosphorus compounds |
| JP2010070737A (en) * | 2008-09-17 | 2010-04-02 | Genji Yamamoto | Transfer paper for dry transfer printing for natural leather and dry transfer printing method |
| CN101691619B (en) * | 2009-10-19 | 2012-12-19 | 浙江赞宇科技股份有限公司 | Method for preparing leather fatliquoring agent |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465802A (en) * | 1982-10-26 | 1984-08-14 | Union Carbide Corporation | Process for treating furred animal pelts and/or fur |
| CN101176446A (en) * | 2006-11-10 | 2008-05-14 | 宋小芳 | Novel mildew resistant tablet and preparation method thereof |
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