CN102258938B - Soda lime as medical carbon dioxide absorbent and preparation method thereof - Google Patents
Soda lime as medical carbon dioxide absorbent and preparation method thereof Download PDFInfo
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- CN102258938B CN102258938B CN201010189091.XA CN201010189091A CN102258938B CN 102258938 B CN102258938 B CN 102258938B CN 201010189091 A CN201010189091 A CN 201010189091A CN 102258938 B CN102258938 B CN 102258938B
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- soda lime
- carbon dioxide
- water
- naoh
- koh
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses soda lime as a medical carbon dioxide absorbent and a preparation method thereof. The soda lime comprises the following components in percentage by weight: 75-85% of Ca(OH), 0.5-5% of NaOH, 0-3% of KOH, 0.1-1% of humectant, 0.5-5% of disintegrating agent, 0.005-1% of pH indication coloring agent and 10-20% of water. The soda lime prepared by the invention has better friability, is uneasy to generate fine power and dry, and the CO2 absorption rate meets the requirement of national drug standards.
Description
Technical field
The present invention relates to a kind of soda lime as medical carbon dioxide absorbent, be mainly used in absorbing in hospital anaesthesia system the field that the carbon dioxide of characteristics of contaminated respiratory droplets and traditional sodium lime use, as chemical analysis, colliery, diving, space flight etc.
Background technology
As far back as 1777, Sweden scientist Scheele found that limewash can absorb the CO of animal breath generation
2, and during the World War I, scientists has invented the soda lime product of sustainable use, and in World War II, become the important component in soldier's breathing mask in army.Current soda lime is as CO
2absorbent is existing to be widely used, and is mainly used in anesthesia, respiratory care, high-pressure chamber, submarine etc.Soda lime is of fine quality, efficient, easy to use and obtain the long-term favor of people due to it.
Carbon-dioxide absorbent is an indispensable part in closed circuit anesthesia (or low discharge inhalational anesthetic), and soda lime is a kind of absorbent wherein relatively commonly used, and has been embodied in American Pharmacopeia.Domestic existing Duo Jia soda lime manufacturer, as the dry chemical reagent work of final roasting, Medical High Molecular Product Co., Ltd., Shandong Weigao Group, Shanghai the May 4th chemical reagent Co., Ltd and Xinning, Taishan City pharmaceutical Co. Ltd etc. are received in Beijing Dare Li Nashihuichang, Shanghai.
The friability of soda lime is the important indicator weighing its quality.When soda lime product particle internal bond is poor, comparatively soft, easily in transit because collision produces a large amount of dust, even if sieve process before using, be also difficult to avoid in use producing fine powder.And this is breakneck in closed circuit anesthesia (or low discharge inhalational anesthetic), fine particle is easily sucked by patient and causes asthma, expiratory dyspnea etc.And increase soda lime hardness, then can cause CO
2gas is difficult to penetrate granule interior, makes product absorb CO
2ability obviously reduces.
Current home products ubiquity very easily produces the shortcoming of fine powder, even if price is cheap, market is still not as expensive imported product.Therefore, the focus of the soda lime Shi Ge producer research and development always of high quality and low cost is prepared.
In addition, in soda lime, conventional NaOH, KOH improve the absorbability of carbon-dioxide absorbent, are that its reaction equation is as follows because NaOH, KOH can the carrying out of catalytic reaction:
(1)CO
2+H
2O→HCO
3 --(aq)；
(2)HCO
3 --(aq)(aq)+NaOH(KOH)→NaHCO
3(KHCO
3)+H
2O；
(3)NaHCO
3(KHCO
3)+Ca(OH)
2→CaCO
3+H
2O+NaOH(KOH)。
But because NaOH, KOH are highly basic, likely can react with anesthetic sevoflurane etc. the harmful alkene or the CO that generate one and be called " compd A ".Therefore, the carbon-dioxide absorbent that preparation NaOH and KOH content is low is also one of focus of this type of research external.
Patents
Patent EP20010960921 is with Ca (OH)
2for raw material, with CaCl
2and MgCl
2for NMF, take silicate as plasticizer, with carboxymethyl cellulose base polymer for adhesive, prepared novel soda lime.
In patent EP0939671A1 and Chinese patent CN1244817A, inventor is with Ca (OH)
2for raw material, with calcium chloride hexahydrate or magnesium chloride hexahydrate for raw material, be plasticizer with calcium sulfate hemihydrate, and be leavening agent with aluminium powder, prepared novel soda lime.
The above patent all not containing NaOH, KOH, can reduce narcotic degraded to a certain extent, but it absorbs CO
2ability also can decline.
Document: Hideyuki Higuchi, Yushi Adachi et al.The Carbon Dioxide Absorption Capacityof
is Half That of Soda Lime.Anesthesia and analgesia.2001,93 (1): 221-225. reports, Higuchi etc. find that the carbon dioxide absorption ability of the product not containing NaOH, KOH is completely only the half of traditional soda lime.Patent WO2008085306A1, in order to improve the absorbability of soda lime, employs LiOH or its precursor, and not containing NaOH, KOH in prescription.Its absorbability of result is suitable with commercially available prod.But LiOH price is higher, greatly add the cost of product, and corrosivity is large, can only use special device.In addition, LiOH thermal discharge when absorbing carbon dioxide is excessive, badly may cause fire if processed.
In Chinese patent CN1541723A, inventor is that soda lime prepared by raw material, although the CO of this method sample with calcium oxide
2absorptivity can reach more than 33%, but its raw material is lime stone, also needs through calcination process, and gained calcium oxide content is lower, and impurity is more, and in prescription, NaOH adds too much (7 ~ 8%), and anesthetic likely can be made to degrade.Therefore, this formulation and technology gained sample is difficult to meet clinical demand.
Summary of the invention
The technical issues that need to address of the present invention are open a kind of soda lime as medical carbon dioxide absorbents and preparation method thereof, to overcome existing defect, meet the needs of Clinical practice.
Soda lime as medical carbon dioxide absorbent of the present invention, comprises the component of following percentage by weight:
Ca(OH)
270～85％
NaOH 0.5～5％
KOH 0～3％
NMF 0.1 ~ 1%
Disintegrant 0.1 ~ 5%
PH indicates coloring agent 0.005 ~ 1%
Water 10 ~ 20%;
The percentage sum of said components is 100.
Preferably, described soda lime comprises the component of following percentage by weight:
Ca(OH)
275～85％
NaOH 1～4％
KOH 0.5～2％
NMF 0.1 ~ 1%
Disintegrant 0.5 ~ 3%
PH indicates coloring agent 0.01 ~ 1%
Water 10 ~ 17%;
The percentage sum of said components is 100.
Preferred further, described soda lime comprises the component of following percentage by weight:
Ca(OH)
278～83％
NaOH 1～3％
KOH 0.5～2％
NMF 0.1 ~ 1%
Disintegrant 0.5 ~ 1.5%
PH indicates coloring agent 0.01 ~ 1%
Water 10 ~ 14%;
The percentage sum of said components is 100.
Described NMF is CaCl
2, MgCl
2, more than one in glycerine or PEG, preferred CaCl
2;
Described disintegrant is sodium carboxymethyl starch, one in PVPP, low-substituted hydroxypropyl cellulose (replace molal quantity be 0.1 ~ 0.39%) or microcrystalline cellulose, preferred sodium carboxymethyl starch.
Described pH instruction coloring agent is the one in titan yellow, crystal violet or ethyl violet;
The preparation method of the soda lime of soda lime as medical carbon dioxide absorbent of the present invention, comprises the following steps:
By Ca (OH)
2, NaOH, KOH, NMF and pH indicate coloring agent to add water mixing, the weight that adds of water is Ca (OH)
2, NaOH, KOH, NMF, pH indicate 60 ~ 70% of the gross weight of coloring agent and disintegrant, add disintegrant and water again, water add that weight is Ca (OH) 2, NaOH, KOH, NMF, pH indicate 3 ~ 10% of the gross weight of coloring agent and disintegrant, make softwood, extrude, it is 2.5 ~ 3mm and the cylinder being highly 3 ~ 10mm that preparation becomes diameter, 90 ~ 110 DEG C of drying 3 ~ 4h, then water is sprayed on the dry products of acquisition, is product.
The present invention adopts Ca (OH)
2as main component, because Ca (OH)
2can with sour gas CO
2reaction, and there is certain hardness, not easily moisture absorption, do not produce a large amount of heats during preparation, production process is easy to control, not only with low cost, and makes whole technique simple and safe controlled.
Containing a small amount of NaOH, KOH in the prescription of design of the present invention.Although likely may there are some degradeds to anesthetic in NaOH, KOH, the CO of the product do not contained completely
2absorptivity is on the low side;
Another feature of the present invention, for adopting medicinal disintegrating agent, if sodium carboxymethyl starch, PVPP, low-substituted hydroxypropyl cellulose, microcrystalline cellulose etc. are as disintegrant, makes product become slightly loose.Found that after adding appropriate disintegrant, the product carbon dioxide absorption rate obtained obviously increases, and friability and outward appearance are not subject to obvious impact.And preparation technology is simple and in other documents or patent, have no interpolation specific examples of such components.
Another feature of the present invention is exactly not plasticizer-containing.The present invention controls the hardness of product by the regulation and control of extrusion device, and the friability of product can reach requirement, and not easily produces fine powder.
The present invention adds moisture by spray-on process.Added moisture is calculated by weightening finish method.This method with regulated and controled sample water by drying time and temperature and divide and compare, more easy to operate and control.
Soda lime friability obtained by the present invention is better, not easily produces fine powder, not easily dry, CO
2absorptivity meets national drug standards requirement.
Detailed description of the invention
In embodiment, moisture adopts plum Teller-Tuo benefit moisture teller to record.
Embodiment 1
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 35.71
KOH 21.43
CaCl
22.86
Sodium carboxymethyl starch 21.43
Ethyl violet 5.71
According to above-mentioned formula, by Ca (OH) 2, NaOH, KOH, NMF CaCl2 and pH indicates coloring agent ethyl violet to add the mixing of 300g water, add disintegrating agent carboxymethyl base sodium starch and water again, the weight that adds of water is Ca (OH) 2, NaOH, KOH, NMF CaCl2, pH indicates 3% of coloring agent ethyl violet and sodium carboxymethyl starch gross weight, make softwood, extrude, it is 3mm and the cylinder highly for 10mm that preparation becomes diameter, 110 DEG C of dry 3h, obtain harder drying sample, sieve after removing fine powder, then water is sprayed on the dry products of acquisition, to product, the weight content of water is 17.8%, be product.
Embodiment 2
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 20.00
KOH 13.33
CaCl
26.67
Sodium carboxymethyl starch 33.33
Titan yellow 6.67
According to above-mentioned formula, by Ca (OH)
2, NaOH, KOH, CaCl
2the mixing of 290g water is added with titan yellow, add disintegrant CMS-Na and water again, water add that weight is Ca (OH) 2, NaOH, KOH, NMF CaCl2, pH indicate 3% of the gross weight of coloring agent ethyl violet and CMS-Na, make softwood, extrude, it is 2.5mm and the cylinder highly for 3mm that preparation becomes diameter, 90 DEG C of dry 4h, obtain harder drying sample, sieve after removing fine powder, then be sprayed on the dry products of acquisition by water, the fountain height of water is: to product, the weight content of water is 13.0%, is product.
Embodiment 3
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 25.64
KOH 6.41
CaCl
23.85
PVPP 25.64
Titan yellow 0.025
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 11.80%, is product.
Embodiment 4
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 12.50
KOH 3.13
MgCl
221.25
Sodium carboxymethyl starch 9.38
Crystal violet 2.50
Preparation method is with embodiment 2, and the fountain height of water is: to product, the weight content of water is 15.4%, is product.
Embodiment 5
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 11.76
KOH 2.94
CaCl
21.18
Low-substituted hydroxypropyl fiber
Element 11.76
Titan yellow 1.76
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 10.00%, is product.
Embodiment 6
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 6.02
KOH 0.00
Glycerine 4.82
Sodium carboxymethyl starch 0.60
Titan yellow 0.06
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 15.09%, is product.
Embodiment 7
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 14.88
KOH 8.93
CaCl
20.60
Sodium carboxymethyl starch 2.98
Titan yellow 0.36
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 11.34%, is product.
Embodiment 8
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 9.15
KOH 9.15
CaCl
24.27
Sodium carboxymethyl starch 6.10
Titan yellow 4.88
Preparation method is with embodiment 2, and the fountain height of water is: to product, the weight content of water is 12.5%, is product.
Embodiment 9
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 18.40
KOH 12.88
CaCl
23.07
Sodium carboxymethyl starch 11.04
Titan yellow 1.84
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 10.8%, is product.
Embodiment 10
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 20.00
KOH 10.71
Macrogol 4000 2.86
Sodium carboxymethyl starch 32.14
Titan yellow 5.71
Preparation method is with embodiment 1, and the fountain height of water is: to product, the weight content of water is 20.0%, is product
Embodiment 11
Pellet hardness test is carried out to soda lime of the present invention as follows:
Operating process:
Get this product and be about 20g, put in the aluminium casket of 19 × 10.5 × 5cm, add the steel ball 20 that diameter is 7.9mm, with each second, the speed of twice and washer move back and forth, displacement is 26cm (comprising case length 19cm), and traveling time is 3 minutes, takes out steel ball, with the sieved sieve of medicine that aperture is 0.45mm, 80% can not need be greater than by part.
Measurement result:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| 97.3％ | 98.2％ | 96.4％ | 97.6％ | 98.3％ | 96.4％ | 98.1％ | 97.7％ | 97.5％ | 98.5％ |
Embodiment 12
The experiment of carbon dioxide absorption rate is carried out to soda lime of the present invention as follows:
Operating process:
Get the dry U-shaped glass tube one that internal diameter is about 15cm, high 15cm, lower end, with after cotton loose fill, in one end of pipe, adds dry calcium chloride and is about 5g, accurately weighed weight; This product 9.5 ~ 10.5g is added in another pipe, more accurately weighed weight, the mouth of pipe respectively fills in single hole stopper, each insertion glass tube one in consent.By the glass tube be equipped with on the arm of this product and contain calcium chloride another-U-shaped glass tube is connected, and with the speed of 75ml per minute, carbon dioxide passed into this product through calcium chloride, after 20 minutes, let cool to room temperature, weighed weight, the weight increased need be greater than 19%.
Measurement result:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| 24.5％ | 24.8％ | 25.4％ | 25.6％ | 25.9％ | 25.7％ | 23.1％ | 24.1％ | 25.3％ | 21.3％ |
Comparative example 1
Formula:
Weight
Component (g)
Ca(OH)
2500.00
NaOH 20.00
KOH 5.00
CaCl
23.13
Titan yellow 6.67
According to above-mentioned formula, by Ca (OH)
2, NaOH, KOH, NMF CaCl
2coloring agent titan yellow is indicated to add the mixing of 300g water with pH, make softwood, extrude, it is 3mm and the cylinder highly for 10mm that preparation becomes diameter, and 110 DEG C of dry 3h, obtain harder drying sample, sieve after removing fine powder, then be sprayed on the dry products of acquisition by water, to product, the weight content of water is 15.79%, is product.
Measure product hardness by embodiment 11, its hardness of result is 98.9%.
Measure product carbon dioxide absorption rate by embodiment 12, result is 9.01%.
Claims (5)
1. soda lime as medical carbon dioxide absorbent, is characterized in that, comprises the component of following percentage by weight:
2. soda lime as medical carbon dioxide absorbent according to claim 1, is characterized in that, described NMF is CaCl
2, MgCl
2, more than one in glycerine or PEG.
3. soda lime as medical carbon dioxide absorbent according to claim 1, is characterized in that, described disintegrant is sodium carboxymethyl starch, PVPP, replacement molal quantity be 0.1 ~ 0.39% low-substituted hydroxypropyl cellulose or microcrystalline cellulose in one.
4. soda lime as medical carbon dioxide absorbent according to claim 1, is characterized in that, described pH instruction coloring agent is the one in titan yellow, crystal violet or ethyl violet.
5. prepare the soda lime as medical carbon dioxide absorbent method described in any one of Claims 1 to 4, comprise the following steps:
By Ca (OH)
2, NaOH, KOH, NMF and pH indicate coloring agent to add water mixing, the weight that adds of water is Ca (OH)
2, NaOH, KOH, NMF, pH indicate 60 ~ 70% of coloring agent and disintegrant gross weight, then add disintegrant and water, make softwood, extrude, 90 ~ 110 DEG C of drying 3 ~ 4h, are then sprayed on the dry products of acquisition by water, are product.
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|---|---|---|---|
| CN201010189091.XA CN102258938B (en) | 2010-05-31 | 2010-05-31 | Soda lime as medical carbon dioxide absorbent and preparation method thereof |
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|---|---|---|---|
| CN201010189091.XA CN102258938B (en) | 2010-05-31 | 2010-05-31 | Soda lime as medical carbon dioxide absorbent and preparation method thereof |
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|---|---|
| CN102258938A CN102258938A (en) | 2011-11-30 |
| CN102258938B true CN102258938B (en) | 2015-02-04 |
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ID=45005887
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|---|---|---|---|
| CN201010189091.XA Expired - Fee Related CN102258938B (en) | 2010-05-31 | 2010-05-31 | Soda lime as medical carbon dioxide absorbent and preparation method thereof |
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|---|---|
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489147B (en) * | 2011-12-14 | 2013-12-04 | 浙江大学 | Organic-inorganic composite sol and preparation method and application thereof |
| CN104399359A (en) * | 2014-11-10 | 2015-03-11 | 苏州维泰生物技术有限公司 | Medical carbon dioxide absorbent and preparation method thereof |
| CN104801172A (en) * | 2015-03-29 | 2015-07-29 | 安徽养和医疗器械设备有限公司 | Carbon dioxide adsorbent and preparation method thereof |
| CN108212073A (en) * | 2017-12-04 | 2018-06-29 | 但建明 | A kind of anti-crushing type carbon dioxide absorber and preparation method thereof |
| CN109499348A (en) * | 2018-12-26 | 2019-03-22 | 江苏立峰生物科技有限公司 | A kind of preparation method of carbon dioxide absorbent for medical use calcium lime |
| CN110614020A (en) * | 2019-07-05 | 2019-12-27 | 湖南佰裕科技股份有限公司 | Novel high-strength calcium hydroxide type carbon dioxide absorbent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0960921A2 (en) * | 1998-05-26 | 1999-12-01 | Degussa-Hüls Aktiengesellschaft | Oligomeric organopolysiloxan cocondensate, his preparation and use for coating surfaces |
| CN1244817A (en) * | 1996-11-25 | 2000-02-16 | 阿姆斯特朗医疗有限公司 | Carbon dioxide absorbent in anaesthesiology |
| CN1541723A (en) * | 2003-11-07 | 2004-11-03 | 孙久民 | Carbon dioxide absorbent for medical use |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9621620D0 (en) * | 1996-10-17 | 1996-12-11 | Intersurgical Ltd | Process for the manufacture of chemical absorbents,and novel chemical absorbent formulations |
-
2010
- 2010-05-31 CN CN201010189091.XA patent/CN102258938B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244817A (en) * | 1996-11-25 | 2000-02-16 | 阿姆斯特朗医疗有限公司 | Carbon dioxide absorbent in anaesthesiology |
| EP0960921A2 (en) * | 1998-05-26 | 1999-12-01 | Degussa-Hüls Aktiengesellschaft | Oligomeric organopolysiloxan cocondensate, his preparation and use for coating surfaces |
| CN1541723A (en) * | 2003-11-07 | 2004-11-03 | 孙久民 | Carbon dioxide absorbent for medical use |
Non-Patent Citations (2)
| Title |
|---|
| Performance of four carbon dioxide absorbents in experimental and clinical settings;M. Yamakage et al.;《Journal of the Association of anaesthetists of Great Britain and Ireland》;20091231;第287页右栏第6行至第288页右栏第23行 * |
| 几种常用填充剂与崩解剂在中药分散片应用中的性能比较;陈燕军等;《中国中药杂志》;20020831;第27卷(第8期);第580-583页 * |
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