CN100398609C - Method of preparing aldehyde remover by utilizing leather heels - Google Patents
Method of preparing aldehyde remover by utilizing leather heels Download PDFInfo
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- CN100398609C CN100398609C CNB200610042696XA CN200610042696A CN100398609C CN 100398609 C CN100398609 C CN 100398609C CN B200610042696X A CNB200610042696X A CN B200610042696XA CN 200610042696 A CN200610042696 A CN 200610042696A CN 100398609 C CN100398609 C CN 100398609C
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Abstract
The present invention relates to a method for preparing aldehyde removers by utilizing leather leftovers, which belongs to the technical field of preparation technology of aldehyde removers. The present invention aims to overcome the problems of high volatility and unsuitability for industrial use in a large quantity of the prior art. In order to overcome the problems of the prior art, the present invention adopts a preparation method for aldehyde removers by utilizing leather leftovers, which comprises the following steps: (1) extracting collagen by hydrolysis; (2) preparing a hydrolysis collagen solution by further hydrolyzing the extracted collagen by pancreatin and measuring the aldehyde removing quantity of the hydrolysis collagen solution to determine the degree of hydrolysis; when the content of methanal reaches below 0.25 mg/L, the hydrolysis is stopped; (3) carrying out amination modification by using ethylenediamine and carbodiimide for amination modification to prepare an amination hydrolysis collagen solution; (4) adding 2% to 5% (measured by the quality of the amination hydrolysis collagen solution) of nonionic surface active agent and amphoteric surface active agent for physical modification to obtain products.
Description
Technical field:
The present invention relates to a kind of fabricating technology field of de-aldehyde agent, particularly a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent.
Background technology:
Formaldehyde is a kind of ubiquitous indoor air pollutants, and mainly building, interior decoration material therefor cause, as raw materials such as clamping plate, coreboard, medium density fibre board (MDF), tackiness agent, pigment.Along with growth in the living standard, interior decoration heat is in the ascendant, has also entered people's inhabitation and working space as the formaldehyde of " stealthy killer ".The existence of formaldehyde is also arranged in makeup, tobacco and yarn fabric in addition.The formaldehyde resin class laking agent that uses in the fabric clothing decomposes and produces free formaldehyde, may cause allergicly after the contact, even brings out cancer.Healthy for the mankind, Many researchers all is devoted to the research work of methanal trapping agent, and up to the present Chang Yong methanal trapping agent mainly is ammonia or aminoderivative class material, and has multiple patent to occur.Show that according to related data the material that has been used to methanal trapping agent at present has: urea, trimeric cyanamide, polyvinyl alcohol, thiocarbamide mixture and natural plant extracts etc., U.S. Patent number are 6541560 reports are made printed matter with hydrazine formaldehyde elimination agent.But finding that in use comprehensive result of use is undesirable, is example explanation with the United States Patent (USP), and the related product of this patent aldehyde effect that disappears is better, but volatility is big, healthy influential to the workman, is unsuitable for industrial a large amount of use.
Summary of the invention:
The object of the present invention is to provide a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent, to overcome the problem that the volatility that prior art exists is big, be unsuitable for industrial a large amount of uses.
For overcoming the problem that prior art exists, the preparation method that the present invention adopts is: a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent, comprise the steps, (1) collagen is extracted in hydrolysis: (2) preparation hydrolytic collagen liquid: the collagen that extracts is done further hydrolysis with pancreatin, by the mensuration of hydrolytic collagen liquid aldehydes removal amount is determined hydrolysis degree,, formaldehyde content stops hydrolysis when following when reaching 0.25mg/L; (3) amination modified: as to carry out the amination modified amination hydrolytic collagen liquid that makes with quadrol and carbodiimide; (4) adding the nonionogenic tenside of 2%～5% (in amination hydrolytic collagen liquid quality) or amphoterics carries out physically modified and obtains product.
In above-mentioned (2) preparation hydrolytic collagen liquid: with the former mass concentration that is mixed with of resulting one or more epoxy glues of step (1) is 10%～30% collagen solution, transfer pH to 7.0～7.5 with the 20% diethanolamine aqueous solution, add 1.0%～3.0% pancreatin (based on collagen butt quality meter) again, be warming up to 40～50 ℃, be warming up to 90～100 ℃ behind reaction 4～10h and make enzymatic inactivation, last with 20% the diethanolamine aqueous solution pH of hydrolyzed solution is transferred to 7.5～8.0 again, leave standstill, with four layers of filtered through gauze, concentrate mass concentration 8%～28% hydrolytic collagen liquid.
In the above-mentioned steps (3), in hydrolytic collagen liquid, add 20%～40% quadrol and 0.5～1% carbodiimide (in the weight of hydrolytic collagen liquid) respectively,, make amination hydrolytic collagen liquid at 20～30 ℃ of reaction 2～5h down.
Above-mentioned nonionogenic tenside can be alkyl polyoxyethylene ether, polyol moiety fatty acid ester etc., and described amphoterics can be trimethyl-glycine, dodecyl tertiary ammonium salt and aliphatic group imidazolidine derivatives etc.
In the above-mentioned steps (4), add the fatty alcohol polyethenoxy ether class tensio-active agent amination hydrolytic collagen liquid is carried out physically modified.Add this tensio-active agent and can improve the transparency and the wettability of amination hydrolytic collagen liquid, can promote it when being used for the furniture aldehydes removal in the lip-deep wetting and infiltration of furniture.
In the above-mentioned steps (1), ox-hide rawhide scrap stock adopt acidic hydrolysis to extract.
In the above-mentioned steps (1), the wet blue leather shaving of ox-hide leather bits adopt alkaline hydrolysis to extract.
In the above-mentioned steps (1), enzymatic hydrolysis is adopted on ox-hide graywall limit.
In the above-mentioned steps (1), pigskin wet blue leather shaving leather bits adopt alkali-enzyme in conjunction with hydrolysis.
The present invention compared with prior art, its advantage applies exists:
1, the aldehyde that disappears is effective: collagen protein is typical polyamphoteric electrolyte, have aminoterminal, carboxyl terminal and side chain acidic-group and basic group, can generate polypeptide through hydrolytic action, produce a large amount of hydrophilic radicals and active group (carboxyl, amino, hydroxyl etc.), so the mechanism of the protein de-aldehyde agent that the present invention proposes first is exactly the effect of utilizing amino on the collagenic hydrolysate and formaldehyde to react and catch formaldehyde to reach.
2, raw material sources are abundant, cost is low: China is a process hides big country, it is reported, the annual leather scrap stock that produced are just up to more than 140 ten thousand tons, collagen protein aboundresources in the leather scrap stock, if these leather scrap stock that contain 80% collagen protein are fully utilized, not only can alleviate the problem of environmental pollution that causes after the leather scrap stock are discarded, can reduce the production cost of de-aldehyde agent simultaneously greatly.
3, HUMAN HEALTH there is not harm, compliance with environmental protection requirements: collagen protein itself is exactly a kind of nutritive substance of needed by human, have skin care, Bearberry Extract, therefore utilize the protein de-aldehyde agent of the inventive method preparation not only can not work the mischief, but also help the health of human body human body health.
4, application prospect is good, be fit to suitability for industrialized production: the protein de-aldehyde agent is a kind of novel environmental protection de-aldehyde agent, and preparation method proposed by the invention is simple, only need the general construction equipment that routinizes to produce, volatility is little in the aldehyde process that disappears simultaneously, even volatile matter itself is also harmless to human body, therefore have the safety conditions of suitability for industrialized production, this method has a good application prospect.
Embodiment:
Below in conjunction with specific embodiment the present invention is described in detail.
Embodiment 1:
(1) collagen is extracted in hydrolysis: go-no-go leather-solid waste, the hydrolysis process different according to the cortex different choice.Following mask body provides four kinds of hydrolysis processs.
1. acidic hydrolysis.With tap water ox-hide rawhide scrap stock are cleaned up earlier, the calcium hydroxide aqueous solution with 20% soaks 10h, is cut into small pieces then, the water of 5 times of tare weight meters and 5% aqueous hydrochloric acid (concentration is 30%) in addition, pH is 4.0 in control, is warming up to 105 ℃, finishes reaction behind the 10h.Separate and to remove remaining skin slag, its filtrate evaporation concentration promptly gets mass concentration and is 30% collagen.
2. alkaline hydrolysis.The concentration that the wet blue leather shaving of ox-hide leather bits remove from offices the water of considering 5 times of weight meters to be worth doing and 10% is 20% calcium hydroxide aqueous solution, keep pH 9～9.5,50 ℃ of temperature, reaction times 3h, reaction finishes the back suction filtration, it is about 8.0 that filtrate is neutralized to pH with 20% aqueous hydrochloric acid, separates then, concentrates, and promptly getting mass concentration is 30% collagen.
3. enzymatic hydrolysis.About 1～4mm is cut on ox-hide graywall limit
3Fritter, washing back adds the water of 5 times of ox-hide graywall limit weight meters, transfers to the optimum pH about 7.5 of pancreatin, 45 ℃ of control reaction temperature, the pancreatin (in the leather leftover quality) of adding 1.0%, time 8h with 20% aqueous sodium hydroxide solution.In enzymolysis process, the aqueous sodium hydroxide solution balance hydrolysis pH with 20% when treating that pH no longer changes, is warming up to 90～100 ℃ and makes enzymatic inactivation about 7.5, separates then, promptly to get mass concentration be 30% collagen to filtering and concentrating.
4. alkali-enzyme is in conjunction with hydrolysis pigskin wet blue leather shaving leather bits.At first adopt the magnesium oxide hydrolysis: will add the water of 5 times of its weight meters in the pigskin wet blue leather shaving leather bits, 0.2% sodium lauryl sulphate tensio-active agent, 6% magnesium oxide is warming up to 70 ℃, isothermal reaction 8h, filter filter residue, the filtrate sealing and standing.Then filter residue being carried out enzyme handles: based on doing leather bits restatement, 2 times water and above-mentioned filter residue are mixed, add 0.2%AEO-3 (fatty alcohol-polyoxyethylene ether tensio-active agent) again, 5% magnesium oxide and 0.02% pancreatin, react 6h down in 50 ℃, being warming up to 95～100 ℃ then, to make enzymatic inactivation, filtering and concentrating obtain mass concentration be 30% collagen.
(2) preparation hydrolytic collagen liquid: resulting one or more of step (1) are mixed collagen do further hydrolysis, the main pancreatin hydrolysis that adopts of this step makes it expose more amino and carboxyl.The preparation mass concentration is 20% collagen solution, transfer pH to 7.0～7.5 with the 20% diethanolamine aqueous solution, add 1.0% pancreatin (based on collagen butt quality meter) again, be warming up to 45 ℃, adopt methanal fast-inspecting reagent unit to carry out rapid detection behind the reaction 8h, formaldehyde content after the aldehydes removal reaches 0.25mg/L and stops hydrolysis when following, be warming up to 95～100 ℃ and make enzymatic inactivation, last with 20% the diethanolamine aqueous solution pH of hydrolyzed solution is transferred to 7.5～8.0 again, leave standstill, with four layers of filtered through gauze, concentrate mass concentration 25% hydrolytic collagen liquid.
(3) amination modified: the quadrol of adding 40% and 1% carbodiimide in hydrolytic collagen liquid, (in the quality of hydrolytic collagen liquid) reacts 4h down at 26 ℃, makes amination hydrolytic collagen liquid.
(4) physically modified obtains product: add the AEO-3 of 2% (in amination hydrolytic collagen liquid quality) in amination hydrolytic collagen liquid, promptly get environment-friendly type protein de-aldehyde agent.
Embodiment 2:
(1) collagen is extracted in hydrolysis: go-no-go leather-solid waste, the hydrolysis process different according to the cortex different choice.
1. acidic hydrolysis.With tap water ox-hide rawhide scrap stock are cleaned up earlier, calcium hydroxide aqueous solution with 10% soaks 6h, be cut into small pieces then, (concentration is 30% for the water of 10 times of tare weight meters and 5% aqueous hydrochloric acid in addition, concentration of hydrochloric acid generally is lower than 35%), pH is 4.0 in control, is warming up to 110 ℃, finishes reaction behind the 8h.Separate and to remove remaining skin slag, it is 60% collagen that its filtrate evaporation concentration gets mass concentration.
2. alkaline hydrolysis.The wet blue leather shaving of ox-hide leather bits remove from offices the water of considering 10 times of weight meters to be worth doing and 5% concentration is 20% calcium hydroxide aqueous solution, keep pH 9～9.5,40～60 ℃ of temperature, reaction times 4h, reaction finishes the back suction filtration, it is about 8.0 that filtrate is neutralized to pH with 20% aqueous hydrochloric acid, separates concentrating to such an extent that mass concentration is 60% collagen then.
(2) preparation hydrolytic collagen liquid: the resulting two kinds of mixing collagens of step (1) are done further hydrolysis, and the main pancreatin hydrolysis that adopts of this step makes it expose more amino and carboxyl.The preparation mass concentration is 30% collagen solution, transfer pH to 7.0～7.5 with the 20% diethanolamine aqueous solution, add 2.0% pancreatin (based on collagen butt quality meter) again, be warming up to 40～50 ℃, adopt methanal fast-inspecting reagent unit to carry out rapid detection behind the reaction 10h, formaldehyde content after the aldehydes removal reaches 0.25mg/L and stops hydrolysis when following, be warming up to 90～100 ℃ and make enzymatic inactivation, last with 20% the diethanolamine aqueous solution pH of hydrolyzed solution is transferred to 7.5～8.0 again, leave standstill, with four layers of filtered through gauze, concentrate mass concentration 15% hydrolytic collagen liquid.
(3) amination modified: the quadrol of adding 25% and 0.7% carbodiimide in hydrolytic collagen liquid, (in the quality of hydrolytic collagen liquid) reacts 4h down at 20 ℃, makes amination hydrolytic collagen liquid.Amino content nearly doubles after amination is modified.
(4) physically modified obtains product: the dodecyl tertiary ammonium salt tensio-active agent that adds 5% (with amination hydrolytic collagen liquid restatement) in amination hydrolytic collagen liquid promptly gets environment-friendly type protein de-aldehyde agent.
Embodiment 3:
(1) collagen is extracted in hydrolysis: go-no-go leather-solid waste, the hydrolysis process different according to the cortex different choice.
1. enzymatic hydrolysis.About 1～6mm is cut on ox-hide graywall limit
3Fritter, washing back adds the water of 8 times of ox-hide graywall limit weight meters, transfers to the optimum pH about 7.0 of pancreatin, 30～45 ℃ of control reaction temperature, the pancreatin (in the leather leftover quality) of adding 0.1%, about 10h of time with 20% aqueous sodium hydroxide solution.In enzymolysis process, the aqueous sodium hydroxide solution balance hydrolysis pH with 20%, is warming up to 90～100 ℃ and makes enzymatic inactivation when treating that pH no longer changes 7.0～7.5, separates then, promptly to get mass concentration be 30% collagen to filtering and concentrating.
2. alkali-enzyme is in conjunction with hydrolysis pigskin wet blue leather shaving leather bits.At first adopt the magnesium oxide hydrolysis: will add the water of 10 times of its weight meters in the pigskin wet blue leather shaving leather bits, 0.3% sodium laurylsulfonate tensio-active agent, 4% magnesium oxide is warming up to about 50 ℃, isothermal reaction 10h, filter filter residue, the filtrate sealing and standing.Then filter residue being carried out enzyme handles: based on doing leather bits restatement, 2 times water and above-mentioned filter residue are mixed, add 0.3% tween-80 tensio-active agent again, 2% magnesium oxide and 0.05% pancreatin, react 5h down in 40～55 ℃, being warming up to 90～100 ℃ then, to make enzymatic inactivation, filtering and concentrating obtain mass concentration be 30% collagen.
(2) preparation hydrolytic collagen liquid: the resulting two kinds of mixing collagens of step (1) are done further hydrolysis, and the main pancreatin hydrolysis that adopts of this step makes it expose more amino and carboxyl.The preparation mass concentration is 10% collagen solution, transfer pH to 7.0～7.5 with the 20% diethanolamine aqueous solution, add 3.0% pancreatin (based on collagen butt quality meter) again, be warming up to 40～50 ℃, adopt methanal fast-inspecting reagent unit to carry out rapid detection behind the reaction 4h, formaldehyde content after the aldehydes removal reaches 0.25mg/L and stops hydrolysis when following, be warming up to 90～100 ℃ and make enzymatic inactivation, last with 20% the diethanolamine aqueous solution pH of hydrolyzed solution is transferred to 7.5～8.0 again, leave standstill, with four layers of filtered through gauze, concentrate mass concentration 10% hydrolytic collagen liquid.
(3) amination modified: the quadrol of adding 20% and 0.5% carbodiimide in hydrolytic collagen liquid, (in the quality of hydrolytic collagen liquid) reacts 2h down at 30 ℃, makes amination hydrolytic collagen liquid.Amino content nearly doubles after amination is modified.
(4) physically modified obtains product: the fatty alcohol-polyoxyethylene ether that adds 3% (with amination hydrolytic collagen liquid restatement) in amination hydrolytic collagen liquid promptly gets environment-friendly type protein de-aldehyde agent.
Claims (9)
1. method of utilizing leather-solid waste to prepare de-aldehyde agent, comprise the steps, (1) collagen is extracted in hydrolysis: (2) preparation hydrolytic collagen liquid: the collagen that extracts is done further hydrolysis with pancreatin, by the mensuration of hydrolytic collagen liquid aldehydes removal amount is determined hydrolysis degree,, formaldehyde content stops hydrolysis when following when reaching 0.25mg/L; (3) amination modified: as to carry out the amination modified amination hydrolytic collagen liquid that makes with quadrol and carbodiimide; (4) in amination hydrolytic collagen liquid quality, the nonionogenic tenside of adding 2%～5% or amphoterics carry out physically modified and obtain product.
2. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 1, it is characterized in that: in described step (2) the preparation hydrolytic collagen liquid: with the former mass concentration that is mixed with of resulting one or more epoxy glues of step (1) is 10%～30% collagen solution, transfer pH to 7.0～7.5 with the 20% diethanolamine aqueous solution, add pancreatin again based on collagen butt quality meter 1.0%～3.0%, be warming up to 40～50 ℃, be warming up to 90～100 ℃ behind reaction 4～10h and make enzymatic inactivation, last with 20% the diethanolamine aqueous solution pH of hydrolyzed solution is transferred to 7.5～8.0 again, leave standstill, with four layers of filtered through gauze, concentrate mass concentration 8%～28% hydrolytic collagen liquid.
3. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 1 or 2, it is characterized in that: in the described step (3), weight in hydrolytic collagen liquid, in hydrolytic collagen liquid, add 20%～40% quadrol and 0.5～1% carbodiimide respectively, react 2～5h down at 20～30 ℃, make amination hydrolytic collagen liquid.
4. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 3, it is characterized in that: described nonionogenic tenside is alkyl polyoxyethylene ether or polyol moiety fatty acid ester, and described amphoterics is trimethyl-glycine, dodecyl tertiary ammonium salt or aliphatic group imidazolidine derivatives.
5. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 3 is characterized in that: in the described step (4), add the fatty alcohol polyethenoxy ether class tensio-active agent amination hydrolytic collagen liquid is carried out physically modified.
6. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 5 is characterized in that: in the described step (1), ox-hide rawhide scrap stock adopt acidic hydrolysis to extract.
7. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 5 is characterized in that: in the described step (1), the wet blue leather shaving of ox-hide leather bits adopt alkaline hydrolysis to extract.
8. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 5 is characterized in that: in the described step (1), enzymatic hydrolysis is adopted on ox-hide graywall limit.
9. a kind of method of utilizing leather-solid waste to prepare de-aldehyde agent as claimed in claim 5 is characterized in that: in the described step (1), pigskin wet blue leather shaving leather bits adopt alkali-enzyme in conjunction with hydrolysis.
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| CNB200610042696XA CN100398609C (en) | 2006-04-18 | 2006-04-18 | Method of preparing aldehyde remover by utilizing leather heels |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101096588B (en) * | 2007-06-26 | 2011-03-30 | 陕西科技大学 | Ocean oil spilling gelling agent prepared by leather leftover bits and pieces and preparation method thereof |
| CN110370416A (en) * | 2019-07-07 | 2019-10-25 | 宁波工程学院 | A kind of formaldehydeless bamboo shaving plate preparation method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957781A (en) * | 1960-08-26 | 1964-05-13 | Isacher Bernhard Adler | Removing finishes from leather |
| CN1048548A (en) * | 1990-06-15 | 1991-01-16 | 叶志远 | Industrial gelatin produced from blue vitriol leather leftover material |
| JP2000217944A (en) * | 1999-01-27 | 2000-08-08 | Asahi Chem Ind Co Ltd | Constituent material for removing foraldehyde |
| CN1298954A (en) * | 2000-11-20 | 2001-06-13 | 四川大学 | Process for extracting collagenic polypeptide from chrome leather dregs to prepare coating agent and retanning agent |
| CN1386576A (en) * | 2002-04-08 | 2002-12-25 | 中国科学院山西煤炭化学研究所 | Process for preparing material to remove aldehyde odour |
| CN1427045A (en) * | 2001-12-21 | 2003-07-02 | 吴际平 | Product used for eliminating aldehyde like harmful substance |
| CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
| CN1481427A (en) * | 2000-12-22 | 2004-03-10 | �����ᡤ�ֶ����幫˾֮�����ṫ˾ | Process for gelatines extraction and chromium salts recovery from tanned hides and skins shavings |
| CN1672737A (en) * | 2004-03-26 | 2005-09-28 | 上海中油生物技术有限公司 | Air freshener and its making process |
| CN1686596A (en) * | 2005-02-25 | 2005-10-26 | 苏州市丛岭胶粘剂有限公司 | Formaldehyde removing agent |
-
2006
- 2006-04-18 CN CNB200610042696XA patent/CN100398609C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957781A (en) * | 1960-08-26 | 1964-05-13 | Isacher Bernhard Adler | Removing finishes from leather |
| CN1048548A (en) * | 1990-06-15 | 1991-01-16 | 叶志远 | Industrial gelatin produced from blue vitriol leather leftover material |
| JP2000217944A (en) * | 1999-01-27 | 2000-08-08 | Asahi Chem Ind Co Ltd | Constituent material for removing foraldehyde |
| CN1298954A (en) * | 2000-11-20 | 2001-06-13 | 四川大学 | Process for extracting collagenic polypeptide from chrome leather dregs to prepare coating agent and retanning agent |
| CN1481427A (en) * | 2000-12-22 | 2004-03-10 | �����ᡤ�ֶ����幫˾֮�����ṫ˾ | Process for gelatines extraction and chromium salts recovery from tanned hides and skins shavings |
| CN1427045A (en) * | 2001-12-21 | 2003-07-02 | 吴际平 | Product used for eliminating aldehyde like harmful substance |
| CN1386576A (en) * | 2002-04-08 | 2002-12-25 | 中国科学院山西煤炭化学研究所 | Process for preparing material to remove aldehyde odour |
| CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
| CN1672737A (en) * | 2004-03-26 | 2005-09-28 | 上海中油生物技术有限公司 | Air freshener and its making process |
| CN1686596A (en) * | 2005-02-25 | 2005-10-26 | 苏州市丛岭胶粘剂有限公司 | Formaldehyde removing agent |
Non-Patent Citations (6)
| Title |
|---|
| 以白乳胶为基质甲醛吸附剂的研制与应用. 艾小红等.广州化工，第33卷第3期. 2005 |
| 以白乳胶为基质甲醛吸附剂的研制与应用. 艾小红等.广州化工，第33卷第3期. 2005 * |
| 以硝基清漆为基质甲醛吸收剂的研究. 艾小红.广州化工，第33卷第2期. 2005 |
| 以硝基清漆为基质甲醛吸收剂的研究. 艾小红.广州化工，第33卷第2期. 2005 * |
| 新型甲醛吸收剂的制备与应用研究. 艾小红等.广州大学学报（自然科学版），第4卷第4期. 2005 |
| 新型甲醛吸收剂的制备与应用研究. 艾小红等.广州大学学报（自然科学版），第4卷第4期. 2005 * |
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Assignee: Ningbo Runhe Chemical Industry Co., Ltd. Assignor: Shaanxi University of Science and Technology Contract fulfillment period: 2008.9.8 to 2016.9.8 contract change Contract record no.: 2008330000444 Denomination of invention: Method of preparing aldehyde remover by utilizing leather heels Granted publication date: 20080702 License type: Exclusive license Record date: 2008.9.14 |
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