CN1323173C - Synthetic method for preparing retanning agent of modified starch for leather - Google Patents
Synthetic method for preparing retanning agent of modified starch for leather Download PDFInfo
- Publication number
- CN1323173C CN1323173C CNB2005100419980A CN200510041998A CN1323173C CN 1323173 C CN1323173 C CN 1323173C CN B2005100419980 A CNB2005100419980 A CN B2005100419980A CN 200510041998 A CN200510041998 A CN 200510041998A CN 1323173 C CN1323173 C CN 1323173C
- Authority
- CN
- China
- Prior art keywords
- parts
- mass fraction
- massfraction
- degraded starch
- reactor
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Graft Or Block Polymers (AREA)
Abstract
The present invention relates to a synthetic preparation method of a modified starch retanning agent for leather, which comprises the steps that starch is oxidized and degraded; then the starch and vinyl monomers make a graft copolymerization reaction. The retanning agent is mainly used for the retanning after chrome tanning in the leather processing, and the retanned finished leather has the advantages of plumpy and soft hand feeling, fine grain surface, uniform staining, obvious thickening and no decoloring phenomenon. When the retanning agent is used before chrome tanning, the absorption rate of a chrome tanning agent can be obviously enhanced in the process of chrome tanning, and the dosage of chrome tanning agent and the content of chrome in chrome tanning waste liquid can be reduced. The modified starch retanning agent is a leather chemical product having the action of ecological environmental protection and has positive significance on pollution reduction in the leather industry.
Description
Technical field
The present invention relates to a kind of synthesis preparation method of ecological environment-friendly type leather composite tanning agent, particularly a kind of synthesis preparation method of retanning agent of modified starch for leather.
Background technology
China is genuine leather big country, it also is leather industry center, the world, the output and the export volume of the leather processing of China, leather shoes, leather goods all rank first in the world, and the leather outlet occupies first of the light industry foreign exchange earning for years, and leatherware outlet in 2003 has reached 21,000,000,000 dollars.But the subject matter that perplexs the leather industry development at present is the serious pollution problem that it produces, and major cause is exactly to have used a large amount of harmful leather chemicalses in the course of processing of leather.Therefore, the synthetic ecological environment-friendly type leather chemicals that can be used for leather processing is the focus of studying both at home and abroad.Principal item as leather composite tanning agent has at present: chromium retanning agent, resin retaning agent (acrylic resin retanning agent, urethane retanning agent, Zelan 338 retanning agent), aldehydes retanning agent etc., these retanning agents have produced pollution in various degree to environment in production and use.Starch is a kind of biodegradable, environment amenable natural reproducible resource, starch also is a kind of chemical materials with ecotope effect, be widely used in various fields such as papermaking, weaving, food, printing and dyeing, medicine, wastewater treatment, ore dressing, tackiness agent and oilfield exploitation and seen that dagger-axe advances the outstanding person, Wu Rui, execute Xinghai County. using tannin and starch is the linking agent modified polyurethane. polymer journal .2003, (6): 809-815.60%～65% of present starch yield can satisfy the demand of grain feed, all the other starch of 35%～40% provide the assurance on the raw material for development research starch based Industrial products, therefore starch has become the preferred feedstock Nakamura K of research and development environment-friendly material, NishimuraY, Hatakeyama T, Hatakeyama H.The intemationl workshop on environmentally compatible materials andrecycling technogy.Japan:Tsukuba, 239～245.In the sixties in 20th century, carried out the research of treated starch abroad as leather retanning agent, but preparation and the tanning performance of only having studied dialdehyde starch are seen A.H.Kom, M.L.Happich, J.Naghski.Studies on the reuse of deadeye starch tanning liquors in thepretanning of hides for sole leather.JALCA, 1963., 8:136～140.In early 1990s, China also carried out exploratory research to the tanning performance of dialdehyde starch tanning agent and saw Wei Shilin, and dialdehyde starch is made the research of wet-white leather. the journal .1994.12 of Xibei College of Light Industry (3) .48～53.Leather industry pollution problem has at present injured the survival and development of leather industry, and the leather industry exigence has the leather chemicals of ecological, environmental protective performance, and retanning agent of modified starch is exactly a kind of leather chemicals with ecological, environmental protective performance.Therefore, be raw material with aboundresources, environment amenable starch, developing leather composite tanning agent high added value, that have the ecotope effect has very important meaning for the Sustainable development of leather industry.
Summary of the invention
The object of the present invention is to provide a kind of can reduce the process hides produced pollution, environment amenable be the synthesis preparation method of the retanning agent of modified starch for leather of main raw material with natural resource starch.
For achieving the above object, the preparation method that the present invention adopts is: at first press mass fraction and add 650～850 parts distilled water and 70～90 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, the degradation agents that when temperature is raised to 50 ℃, in mixture, adds 2 parts by mass fraction, continue heat temperature raising, in the time of 80 ℃～85 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3～5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6～7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 70 ℃～75 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, the mixture that 30 parts of acrylamides and 30 parts of butyl acrylates are formed or by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip 40 parts of ammonium persulfate aqueous solutions that are dissolved in 35 parts of distilled water by 5 parts of ammonium persulphates simultaneously synchronously, the control dropping time is 0.5～1 hour, carrying out graft copolymerization 2～3 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.5～6.0 with massfraction at last.
The used W-Gum of the present invention is industrial first grade; Vinyl monomer is vinylformic acid, vinyl cyanide, acrylamide, butyl acrylate, methacrylic acid and methyl methacrylate, is industrial first grade, and content is greater than 99%; Virahol and ammonium persulphate are industrial goods, and content is greater than 99%, and degradation agents is that 30% hydrogen peroxide or available chlorine content are 10% chlorine bleach liquor.
The present invention is a basic raw material with starch and vinyl monomer, adopted method to prepare retanning agent of modified starch to carrying out graft copolymerization with vinyl monomer again behind the starch degradation, its preparation technology is simple, the finished product leather good hand feeling softness after using, the grain exquisiteness, uniform coloring, thicken significantly, do not have the phenomenon of losing colour.
Embodiment
Embodiment 1: at first press mass fraction and add 650 parts distilled water and 90 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 80 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 70 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.5 hour, carrying out graft copolymerization 3 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.5 with massfraction at last.
Embodiment 2: at first press mass fraction and add 850 parts distilled water and 70 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 85 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 75 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.8 hour, carrying out graft copolymerization 2 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.8 with massfraction at last.
Embodiment 3: at first press mass fraction and add 720 parts distilled water and 85 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 82 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 71 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 1.0 hours, carrying out graft copolymerization 2.8 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.6 with massfraction at last.
Embodiment 4: at first press mass fraction and add 800 parts distilled water and 75 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 84 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 4mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 73 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.6 hour, carrying out graft copolymerization 2.2 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.9 with massfraction at last.
Embodiment 5: at first press mass fraction and add 760 parts distilled water and 80 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 81 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 72 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.9 hour, carrying out graft copolymerization 2.5 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.7 with massfraction at last.
Embodiment 6: at first press mass fraction and add 830 parts distilled water and 77 parts W-Gum in reactor, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 83 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 4mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 74 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.7 hour, carrying out graft copolymerization 2.7 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 6.0 with massfraction at last.
The present invention prepares the ecological environment-friendly type leather composite tanning agent with vinyl monomer by graft copolymerization after with starch degradation.Main retanning agent as leather behind the chrome tanning, gained finished product leather good hand feeling softness after the retanning, grain exquisiteness, uniform coloring; Also can use before chrome tanning, can obviously improve the specific absorption of chrome tanning agent, specific absorption is brought up to more than 90% by about 80%.When vinyl monomer was selected vinylformic acid, vinyl cyanide, acrylamide, butyl acrylate for use, the finished product leather after the retanning thickened significantly, the good hand feeling softness, and do not have the phenomenon of losing colour; When vinyl monomer is selected vinylformic acid, methacrylic acid, vinyl cyanide, methyl methacrylate for use, the finished product leather good springiness after the retanning, the feel consolidation, mechanical property is good.Simultaneously, retanning agent of modified starch has the ecological, environmental protective effect, and environmental pollution is little, can be used for making the retanning agent of ecological leather.
Claims (8)
1, a kind of synthesis preparation method of retanning agent of modified starch for leather is characterized in that:
1) degraded of starch
At first in reactor, press mass fraction and add 650～850 parts distilled water and 70～90 parts W-Gum, stirring down, heat temperature raising obtains mixture, the degradation agents that when temperature is raised to 50 ℃, in mixture, adds 2 parts by mass fraction, continue heat temperature raising, in the time of 80 ℃～85 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3～5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6～7, obtains degraded starch solution;
2) degraded starch and vinyl monomer carry out graft copolymerization
In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 70 ℃～75 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, the mixture that 30 parts of acrylamides and 30 parts of butyl acrylates are formed or by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip 40 parts of ammonium persulfate aqueous solutions that are dissolved in 35 parts of distilled water by 5 parts of ammonium persulphates simultaneously synchronously, the control dropping time is 0.5～1 hour, carrying out graft copolymerization 2～3 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.5～6.0 with massfraction at last.
2, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1 is characterized in that: said degradation agents is that massfraction is that 30% hydrogen peroxide or available chlorine content are 10% chlorine bleach liquor.
3, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 650 parts distilled water and 90 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 80 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 70 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.5 hour, carrying out graft copolymerization 3 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.5 with massfraction at last.
4, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 850 parts distilled water and 70 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 85 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 75 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.8 hour, carrying out graft copolymerization 2 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.8 with massfraction at last.
5, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 720 parts distilled water and 85 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 82 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 5mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 71 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 1.0 hours, carrying out graft copolymerization 2.8 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.6 with massfraction at last.
6, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 800 parts distilled water and 75 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 84 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 4mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 73 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.6 hour, carrying out graft copolymerization 2.2 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.9 with massfraction at last.
7, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 760 parts distilled water and 80 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts massfraction by mass fraction when temperature is raised to 50 ℃ in mixture is 30% hydrogen peroxide, continue heat temperature raising, in the time of 81 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 3mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 7, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 72 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 40 parts of vinyl cyanide, 30 parts of acrylamides and 30 parts of mixtures that butyl acrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.9 hour, carrying out graft copolymerization 2.5 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 5.7 with massfraction at last.
8, the synthesis preparation method of retanning agent of modified starch for leather according to claim 1, it is characterized in that: at first in reactor, press mass fraction and add 830 parts distilled water and 77 parts W-Gum, stirring down, heat temperature raising obtains mixture, adding 2 parts available chlorine content by mass fraction when temperature is raised to 50 ℃ in mixture is 10% chlorine bleach liquor, continue heat temperature raising, in the time of 83 ℃, carry out insulation reaction, DeR finished when the viscosity of reactant dropped to 4mPas in system, the pH value that with massfraction is 30% sodium hydroxide solution regulation system is 6, obtains degraded starch solution; In reactor, keep the temperature of above-mentioned degraded starch solution in the time of 74 ℃, press mass fraction and in degraded starch solution, drip 200 parts by 10 parts of Virahols, 90 parts of vinylformic acid, 30 parts of methacrylic acids, 30 parts of vinyl cyanide and 40 parts of mixtures that methyl methacrylate is formed, drip simultaneously synchronously 40 parts and be dissolved in the ammonium persulfate aqueous solution that 35 parts of distilled water obtain by 5 parts of ammonium persulphates, the control dropping time is 0.7 hour, carrying out graft copolymerization 2.7 hours behind reinforced the finishing, is that the pH value of 30% sodium hydroxide solution regulation system is 6.0 with massfraction at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100419980A CN1323173C (en) | 2005-04-26 | 2005-04-26 | Synthetic method for preparing retanning agent of modified starch for leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100419980A CN1323173C (en) | 2005-04-26 | 2005-04-26 | Synthetic method for preparing retanning agent of modified starch for leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1687462A CN1687462A (en) | 2005-10-26 |
| CN1323173C true CN1323173C (en) | 2007-06-27 |
Family
ID=35305504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100419980A Expired - Fee Related CN1323173C (en) | 2005-04-26 | 2005-04-26 | Synthetic method for preparing retanning agent of modified starch for leather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1323173C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369947C (en) * | 2006-04-20 | 2008-02-20 | 陕西科技大学 | Emulsion grafting copolymerization process of preparing retanning and fat liquoring agent for leather |
| CN101538351B (en) * | 2009-04-10 | 2010-12-29 | 陕西科技大学 | Method for preparing thickening and water holding agent for polycarboxylate type concrete water reducing agent |
| CN101575652B (en) * | 2009-05-08 | 2013-01-09 | 枣庄超越玉米淀粉有限公司 | Starch tanning agent and method for producing same |
| CN101735392B (en) * | 2009-11-10 | 2011-07-20 | 天津工业大学 | Corn grafting starch and preparation method thereof |
| CN102020719B (en) * | 2010-11-11 | 2012-05-09 | 陕西科技大学 | Method for preparing modified starch tanning agent |
| CN102534056B (en) * | 2010-12-14 | 2015-03-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN103242562B (en) * | 2013-04-28 | 2015-03-18 | 四川大学 | Degradable starch-degradable chromium-containing leather pulp composite as well as preparation method and application thereof |
| CN107201413B (en) * | 2017-06-28 | 2019-12-06 | 东莞市明亨智能家居有限公司 | chrome-free tanning agent and preparation method thereof |
| CN108179235B (en) * | 2017-12-29 | 2020-09-29 | 温州大学 | Tanning agent prepared from modified rice dialdehyde starch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563427A (en) * | 2004-03-25 | 2005-01-12 | 陕西科技大学 | Method for synthesizing retanning agent modified by starch in use for leather |
-
2005
- 2005-04-26 CN CNB2005100419980A patent/CN1323173C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563427A (en) * | 2004-03-25 | 2005-01-12 | 陕西科技大学 | Method for synthesizing retanning agent modified by starch in use for leather |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1687462A (en) | 2005-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1323173C (en) | Synthetic method for preparing retanning agent of modified starch for leather | |
| EP2824125B1 (en) | Polysaccharide and/or polypeptide based graft polymers as synthetic tannins | |
| CN101597871B (en) | Paper pulping bleaching and waste water purification integration technology | |
| CN105755185B (en) | Titanium tannage agent/stannic oxide/graphene nano composite tanning agent and preparation method thereof | |
| CN104232810B (en) | Graphene oxide and water-soluble vinyl monomer multipolymer leather retanning agent and preparation method thereof | |
| CN111961768B (en) | Preparation method of amphoteric polyacrylic acid retanning agent | |
| CN102492079B (en) | Method for preparing nano composite high-absorptivity chrome tanning auxiliary agent by combining polycarboxylic acid copolymer with montmorillonite | |
| CN105350084A (en) | Surface modification method for calcium sulfate whiskers | |
| CN102010917A (en) | Ammonia nitrogen-free leather-making deliming agent and preparation method thereof | |
| CN1563427A (en) | Method for synthesizing retanning agent modified by starch in use for leather | |
| Ding et al. | A novel synergistic covalence and complexation bridging strategy based on multi-functional biomass-derived aldehydes and Al (III) for engineering high-quality eco-leather | |
| CN100369947C (en) | Emulsion grafting copolymerization process of preparing retanning and fat liquoring agent for leather | |
| CN106395915B (en) | A kind of synthetic method of poly-ferric sulfate chloride | |
| CN101575652B (en) | Starch tanning agent and method for producing same | |
| CN101871024B (en) | Method for preparing aldehyde-containing polyurethane-acrylate resin tanning agent | |
| CN103880221B (en) | A kind of leather is wet ornamenting composite waste treatment for reuse technique in producing | |
| US20240263201A1 (en) | Biological method for obtaining monomers comprising an ethylenic unsaturation by bioconversion of a bio-sourced compound comprising at least one nitrile function | |
| CN104232809A (en) | Magnetic collagen modified anionic retanning agent and preparation method thereof | |
| CN105948318A (en) | Recycling treatment method for positive ion dye wastewater | |
| CN111363864A (en) | Nonmetal cation tanning agent and preparation method thereof | |
| CN105753204A (en) | Method for treating textile biologically-dysoxidizable wastewater | |
| CN107881266B (en) | In-situ method for preparing layered double-metal hydroxide/polymer nano composite leather retanning agent with deepening effect and method thereof | |
| CN113862405A (en) | Napa type high-grade plane sofa leather and production process thereof | |
| CN102604004A (en) | Method for preparing flexible and full dyeing assisting type amphoteric leather retanning agent | |
| CN104789717A (en) | Process for processing cattle hide upper leather by adopting nano-composite leather wet finishing auxiliary |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |