CN1583176A - Wax composition for sealing medicine pills - Google Patents
Wax composition for sealing medicine pills Download PDFInfo
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- CN1583176A CN1583176A CNA200410042842XA CN200410042842A CN1583176A CN 1583176 A CN1583176 A CN 1583176A CN A200410042842X A CNA200410042842X A CN A200410042842XA CN 200410042842 A CN200410042842 A CN 200410042842A CN 1583176 A CN1583176 A CN 1583176A
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Abstract
A wax composition for sealing the medicinal pill contains paraffin wax, oxidized petroleum wax, and the auxiliary chosen from polyvinyl wax, atoleine, microcrystalline wax, polyethylene, polystyrene, EVA, methyl cellulose, oil, surfactant, etc.
Description
Technical field
The present invention relates to a kind of Wax composition; Or rather, the present invention relates to not contain Cera Flava and be the pill sealing Wax composition that primary raw material is made with paraffin and petroleum oxidate wax.
Background technology
In the Chinese medicine industry of China, the pill sealing is used paraffin and Cera Flava composite by a certain percentage with wax always.But because there are shortcomings such as price height, purity is low, fusing point is low in Cera Flava, cause the pill that makes to seal with wax deliquescing at normal temperatures easily, be clamminess, and anti-breaking property is poor, seal difficulty, therefore those skilled in the art attempt replacing Cera Flava with other raw materials, have the sealing wax of good processing and serviceability with preparation.
CN 1037313A discloses a patent of not getting rid of mellisic " composition of Chinese medicine pill pack case ", and machine-processed wax is made up of paraffin, Cera Flava, Colophonium, EVA, EAA resin, PE resin, low molecular polyethylene, vaseline and Oleum Ricini in this invention; Because this patent do not get rid of the Cera Flava component, therefore mingle and the not high and pill sealing that causes of purity can not well solve with the cracking problem of wax for Cera Flava; Hang the wax prescription by hand in this invention and be made up of paraffin, Colophonium, EVA, EEA resin, PE resin, low molecular polyethylene, Oleum Ricini, though do not re-use Cera Flava, its anti-performance of breaking is undesirable.
The present inventor once disclosed a kind of mellisic anti-cracking pill sealing Wax composition that do not contain in the open CN1410488A of Chinese patent, said composition mainly is made up of paraffin and Tissuemat E, additives such as annex solution paraffin body, microwax and OPE.The intensity of this invention product, toughness, low temperature resistant and resistance to elevated temperatures have all surpassed the performance of the sealing wax that the present pharmaceutical factory of traditional Chinese medicine uses, but there is following shortcoming in said composition: fusing point is higher, and temperature is higher when causing being stained with wax pill, is unfavorable for that the workman operates; Requirement to the time of sealing is tighter, and the time is grown then wax pill hardening slightly, causes and seals not tight phenomenon.
Summary of the invention
For problems such as the fusing point height that solves prior art Chinese medicine pill wax, the time of sealing are short, the invention provides a kind of novel pill sealing and use Wax composition, its main component comprises:
Paraffin: 40～70 ℃ of fusing points; Consumption 10～90 weight %, preferred 10～80 weight %, described paraffin is food-grade paraffin wax, comprises fully refined wax and semi-refined wax, can be domestic production, also can be imported product;
Petroleum oxidate wax: consumption 10～90 weight %, preferred 10～70 weight %, described petroleum oxidate wax is the oxidized paraffin wax of various models and the oxidized microcrystalline wax of various models, can be domestic production, also can be imported product.
Pill sealing of the present invention can also further contain following additives with Wax composition: Tissuemat E, liquid paraffin, microwax, polyolefin and modifier (polypropylene wax thereof, the acid modified polypropylene waxes, OPE, polyethylene, polypropylene, polybutene, polyisobutylene, polystyrene, polyvinyl acetate, ethylene-acrylic acid copolymer, vinyl-acrylate copolymer, ethene-vinyl acetate-methacrylate terpolymer), methylcellulose, ethyl cellulose, carboxymethyl cellulose, silicone oil, animal and plant fat or the oils and fats crossed through processed such as hydrogenations are (as oil with hydrogenated soybean, the hydrogenated castor wet goods).
Used Tissuemat E molecular weight can be domestic production between 1000～30000, also can be imported product.
Described liquid paraffin, microwax, polyethylene, EVA, methylcellulose, ethyl cellulose, oil with hydrogenated soybean, hydrogenated castor wet goods are the product of the domestic and international various trade mark, model.The addition of these additives is 0.1～70%, and preferred addition is 0.1～40%.
Pill sealing of the present invention also further contains on a small quantity or does not contain anion surfactant with Wax composition, as high fatty alcohol, higher fatty acids and its esters, sulfonic acid and its esters, sulfuric ester and its esters, phosphate ester and its esters etc.The addition of described anion surfactant is 0.1～30%, and preferred addition is 0.1～20%.
Also can further contain on a small quantity in Wax composition or do not contain non-ionic surface active agent in pill of the present invention sealing, comprise polyethylene glycol type and polyhydric alcohol type.
Described polyethylene glycol type surfactant comprises fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene carboxylate, polyoxyethylene alkyl amine, polyxyethylated alkylolamides of all size and various models etc.
Described EPE polyol EPE comprises fatty acid glyceride and pentaerythritol fatty ester, Span, sorbitan fatty acid ester, sucrose fatty acid ester and the alkylolamides etc. of all size and various models.
The amount of described non-ionic surface active agent is 0.1～20%, preferred 0.1～10%.
Pill sealing of the present invention is with containing on a small quantity or not contain bentonite, kieselguhr, Kaolin, calcium carbonate and silicon dioxide etc. in the Wax composition.
Described bentonite, kieselguhr, Kaolin, calcium carbonate and silicon dioxide etc. are the various brands of domestic and international production and the product of various models, and addition is 0.1～20%, and preferred 0.1～15%.
Anti-cracking pill sealing of the present invention can method routinely prepare with Wax composition: various components are positioned in the mixing stirred vessel of conventional band external source heating, intensification is heated to 100～160 ℃, after material is melted fully, stirred 10～50 minutes, after this discharging is cooled to 100 ℃ or to make wax stone standby.
Anti-cracking pill sealing of the present invention has good operation and serviceability with Wax composition, and the pliability of compositions, hardness and fusing point can be adjusted as required.The present composition has extraordinary pliability, takes out after 24 hours in cooling under room temperature and the low temperature, does not fall slag from 1 meter eminence when terrazzo floor freely falls immediately, and the crackle rate is very low, and anti-breaking property is good.The sealing of the pill of prior art is very high to sealing time requirement with Wax composition, to seal immediately after being stained with wax pill, otherwise the time one grow, wax promptly solidifies, cause seal not tight; And use wax sample of the present invention to be stained with wax pill, the time of sealing can extend to 1.5 minutes～about 2.0 minutes, and is stained with the wax temperature and obviously reduces, the wax temperature of being stained with originally is 120-130 ℃, the present composition be stained with the wax temperature between 80 ℃～100 ℃, easy operating; The heat stability of wax liquid is also better.
The present invention who prepares by the ratio of adjusting various components seals and uses Wax composition, can be used for multiple different practical use.Described Wax composition not only is suitable for as pill sealing wax, also can go up with the preparation waterproof article with oilcloth, raincoat, paper etc. because of its pliability is applicable to coating flexible layer material such as umbrella, also available its impact resistance and be used for the occasion that requirement has mechanical strength, as as mould, sculpture spare, ornament, artistic products etc., also can because of its have high fusing point be used in the article such as disposable water cup, the food container etc. that need the certain temperature of tolerance go up, and on electric fittings as electric insulation wax.This makes product of the present invention have broad application prospect.
The specific embodiment
Further specify the present invention below by specific embodiment, but but this and do not mean that practical range of the present invention only limits to this.Those of ordinary skills also can make many changes or improvement after having understood content of the present invention, but these changes or improvement all do not exceed the essential scope of the present invention that appended claim limits.
If there is not special explanation, following percentage composition is weight percentage.
The pill sealing wax compositions of the present invention that adopted different formulation, concrete prescription sees Table the embodiment 1-6 in 1, and to the fusing point of prepared compositions, anti-ly break performance and stability characterizes, concrete fusing point and the anti-number of times of breaking see Table data in 1.For the pill Wax composition with prior art carries out performance comparison, give fusing point and the anti-data of breaking number of times of wax sample---workshop wax sample and patent (CN 1410488A) wax sample---the wax sample A of institute that uses at present in certain plant produced workshop in the table 1.
The fusing point of pill Wax composition characterizes and uses Oven Method.The wax pill that to be stained with behind the wax respectively takes out 3, puts into baking oven, at 35 ℃, 40 ℃, 45 ℃, 50 ℃, 55 ℃, 60 ℃, 65 ℃ heating 4h down, observes the fusing situation of wax pill under said temperature respectively, and the record fusion temperature, averages.
The anti-performance of breaking that characterizes pill wax is to adopt being stained with wax pill behind the wax in uniform temperature, as room temperature (13 ℃), or after placing 12h in the freezer compartment of refrigerator under the low temperature (18 ℃), taking out wax pill freely rolls down on 1m eminence platform immediately, fall slick terrazzo floor, observe the cracking situation of wax pill.The record wax pill amounts to when crackle occurring and is fallen the number of times that hits, and gets 5 results' meansigma methods.
To wax pill of the present invention 100 ℃ heat 30h, 40h, 50h, 60h respectively after, the wax sample that takes out each time period compares, and finds that the color of wax pill does not have significant change, and without any abnormal smells from the patient, illustrates that the character of this wax sample is more stable.
Table 1 pill seals with Wax composition prescription (%) and performance measurement result thereof
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative Examples (workshop wax sample) | Comparative Examples (the wax sample A of institute) | |
| Paraffin | ????19 | ??81 | ??78 | ??5 | ??8 | ??28 | ????50 | ????35 |
| Oxidized paraffin wax | ????40 | ??12 | ??9 | ??90 | ??5 | ??12 | ||
| Oxidized microcrystalline wax | ????30 | ??7 | ??7 | ??77 | ??5 | |||
| Tissuemat E | ????11 | ??5 | ??2 | ??2 | ????5 | ????1 | ||
| Liquid paraffin | ??2 | |||||||
| Microwax | ??6 | ??1 | ??18 | ????15 | ????24 | |||
| Polyethylene | ??1 | ??9 | ????10 | ????5 | ||||
| ??EVA | ??5 | ??14 | ????20 | ????35 | ||||
| Methylcellulose | ??1 | ??5 | ||||||
| Ethyl cellulose | ||||||||
| Sodium lauryl sulphate | ??2 | |||||||
| Macrogol 2000 0 | ??1 | |||||||
| Calcium carbonate | ??2 | |||||||
| Amount to g | ????100 | ??100 | ??100 | ??100 | ??100 | ??100 | ????100 | ????100 |
| Wax pill deliquescing (touching with one's hand) temperature, ℃ | ????56 | ??44 | ??49 | ??51 | ??52 | ??55 | ????35 | ????55 |
| Be stained with the wax temperature, ℃ | ????90 | ??90 | ??90 | ??90 | ??90 | ??90 | ????122/65* | ????130 |
| Room temperature (13 ℃) is broken on average to fall when crackle appears in test and is hit number of times | 8 (not stratified) | 3 (not stratified) | 4 (not stratified) | 3 (not stratified) | 8 (not stratified) | 9 (not stratified) | 2 (layerings) | 9 (not stratified) |
| Low temperature (18 ℃) is broken on average to fall when crackle appears in test and is hit number of times | 1 (not stratified) | 1 (not stratified) | 1 (not stratified) | 1 (not stratified) | 2 (not stratified) | 2 (not stratified) | 1 (layering) | 2 (not stratified) |
* represent that 122 ℃ are stained with 1～2 time, be stained with 2～3 times for 65 ℃
Wax pill deliquescing temperature data from table 1 is as can be seen: workshop wax sample just might be clamminess about 35 ℃, the breakseal effect; And the deliquescing temperature of wax sample A of institute and wax sample of the present invention is apparently higher than workshop wax sample, so room temperature can not be clamminess when using down, can satisfy normal instructions for use.
In sealing operation, being stained with the wax temperature also is a very important operation index.That uses is stained with the wax temperature and must guarantees that the pill sealing melts fully with wax.By data in the table as can be known, the wax temperature of being stained with of wax sample of the present invention is 90 ℃, and wax sample promptly of the present invention just can melt down fully at 90 ℃; And the wax sample A of institute be stained with the wax temperature up to 130 ℃, be not easy to carry out sealing operation.The wax of being stained with of the workshop wax sample that generally uses is operated more loaded down with trivial details now, need under 122 ℃, be stained with 1～2 time, under 65 ℃, be stained with 2～3 times, Cao Zuo reason is that the cementability of workshop wax sample and pill is bad like this, therefore need under higher temperature, to be stained with wax earlier, form the thin layer of a wax on the pill surface, under lower temperature, be stained with wax then, wax is bonded on this thin layer.In addition, the time of sealing that allows when using the wax sample A of institute to carry out sealing operation has only about 30 seconds, and the time of sealing of using wax sample of the present invention can extend to 1.5 minutes～about 2.0 minutes, so just there is time enough to carry out sealing operation, help improving bond effect, thereby seal pill better.
And the embodiment of the invention 1,5 and 6 the wax sample anti-performance of breaking at room temperature are higher than workshop wax sample significantly, and be suitable substantially with the wax sample A of institute, shows the tenacity excellent of wax sample of the present invention; And the cohesive of this product is good, and wax pill is difficult for falling slag through falling to hit in use, even also not stratified after breaking.Thereby product of the present invention has good serviceability.
In addition, the glossiness of wax sample of the present invention is good, and without any abnormal smells from the patient, heat stability is also better in being stained with the wax process.
By as can be seen above, the combination property of wax sample of the present invention is the most remarkable, be embodied in to have higher deliquescing temperature and the lower wax temperature of being stained with, and anti-preferably breaking property.Pill sealing therefore of the present invention not only has good serviceability with wax, uses not deliquescing under the room temperature, is not clamminess, and does not fall slag, not stratified after dropping, and the crackle rate is low; And have outstanding operating characteristics, can under lower temperature, be stained with the wax operation, and the time of sealing is long.
List of references
1.US5242091 air curing cartridge sealant: paraffin, microwax, high viscosity polyisobutylene, high viscosity polybutene
2.J05148465 heat-resistant polyolefin PUR: noncrystalline propylene-ethylene random copolymer, its number-average molecular weight are 500-20000 and ethylene, and wax is Tissuemat E, polypropylene wax, sour modified polypropylene waxes, paraffin, microwax.
3.J05125823 ceramic tile caulking joint PUR: natural Brazil wax, paraffin, microwax, Tissuemat E, polypropylene wax, ammonification wax
Use mildew resistant sealant 4.J05025460 decorate: thermoplastic resin: A. polymer (the crystalline acrylic resin of a. or/and through sour modification, b. block copolymer, c. ethylene-(methyl) acrylate copolymer).B. carboxylic chemical compound: rosin ester.C. native paraffin (as paraffin, microwax, Tissuemat E, polypropylene wax, synthetic wax is as amino wax, ester type waxes, polyester wax for Brazil wax, pertroleum wax)
5.US5063271 be used for the hot melt wax compositions of paper etc.: paraffin wax fully refined, the heavy middle distillate wax of recrystallization, microwax, EVA copolymer, polypropylene
6.US4772650 sealant compositions: the content of wax, polystyrene, Colophonium and ethylene copolymer.(a) wax is fusing point 44-72 ℃ paraffin, and fusing point is lower than 85 ℃ microwax; (b) polystyrene, poly alpha methylstyrene, vinyltoluene/α-Jia Jibenyixigongjuwu; (c) Colophonium or derivatives thereof; (d) ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer or vinyl-acrylate copolymer
7.US4684554 container internal layer sealing: consist of the cardboard wax coating, polystyrene resin and ethylene copolymer.Wax is paraffin, microwax; The polystyrene or derivatives thereof, the Colophonium or derivatives thereof.Ethylene copolymer is an ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer or ethene-vinyl acetate-methacrylate terpolymer.
8.US3284279 the succedaneum of wax: crystalline polyethylene, unformed Atactic Polypropylene, the pertroleum wax of paraffin distillate.Poly number-average molecular weight is 2,000～40,000, and polyacrylic number-average molecular weight is 2,000～100,000, and paraffin melting point is 120-200F.Be used to roll or apply the high-density fiber thin slice, parchment paper, glassine, or regenerated cellulose.
9.CA-776181 be used for the plastics composite of milk product container and similar article: pertroleum wax contains paraffin and microwax, solid polyethylene, isotactic polypropylene, solid polyterpene resin.
10.DE1250255 be used for the Wax composition of coating or conceived paperboard: paraffin melting point is at 120～180F, and the microwax fusing point is at 160～180F, and polyolefin molecular weight is 1,500～25,000, and molecular weight 800～2,000 petrolatum or styrene polymer or copolymer
11. Chinese patent (application number 88102331) Chinese medicine pill packing wax shell is formed, a kind ofly form by paraffin, Cera Flava, ceresine, vaseline, low molecular polyethylene, be used to pack the wax shell of Chinese medicine pill, it is characterized in that: adopting the manual wax method of hanging when carrying out the honeyed pill packing, the wax shell is by 60～80% paraffin, and 1～10%EVA resin (or EEA resin), 0～6% polyvinyl resin, 15～20% Colophonium, 3～5% Oleum Ricini and 0～5% low molecular polyethylene are formed.
12. Chinese patent (application number 91104019) technology wax and its production and application, a kind of craft candle composition is characterized in that said composition comprises (in parts by weight) component title, weight content; Paraffin, 2000～3000 parts; Tissuemat E, 1～5 part; The plastics end, 0.1～10 part; Stearic acid, 0.5～25 part; Pigment, consumption is decided as required.
13. Chinese patent (application number 91111953) rubber protecting agent, a kind of rubber protecting agent is characterized in that, it is by the hydrogenation microcrystalline wax, industrial paraffin, and low density polyethylene (LDPE), purification ceresine and antioxidant are formed.
14. Chinese patent (application number 92108156) dampproof agent for paper products, a kind of dampproof agent for paper products is characterized in that: with low molecular polyethylene and paraffin is primary raw material, and sodium hydroxide, stearic acid, Colophonium, water are mixed the body of heating and stirring into.
15. Chinese patent (application number 95110282) is produced the process of series high melting point paraffin, the present invention relates to a kind of process of producing series high melting point paraffin, is that the method by upgrading realizes.The present invention is to be raw material with 54 ℃, 56 ℃, 58 ℃ hydrogenation food-grade paraffin wax, with the polyethylene from high pressure process is host, with polypropylene, ethylene and vinyl acetate co-polymer is that adjuvant is made compound additive, after heating up, stirring, under temperature constant state through the static mixer mix homogeneously, be cooled to below 100 ℃, can produce 66～109 ℃ series high melting point paraffin product.
Claims (10)
1, a kind ofly do not contain the sealing of mellisic pill and use Wax composition, it is characterized in that said composition contains the paraffin of 10～90 weight % and the petroleum oxidate wax of 10～90 weight %.
2, use Wax composition according to the described pill sealing of claim 1, it is characterized in that the addition of described paraffin and petroleum oxidate wax is respectively 10～80 weight % and 10～70 weight %.
3, according to claim 1 or 2 described pill sealing Wax compositions, it is characterized in that, said composition further contains the additive that is selected from following one or more materials: Tissuemat E, liquid paraffin, microwax, polyethylene, EVA, methylcellulose, ethyl cellulose, oil with hydrogenated soybean, castor oil hydrogenated, total consumption is 0.1～70 weight %, and the molecular weight of Tissuemat E is between 1000～30000.
4, use Wax composition according to the described pill sealing of claim 3, it is characterized in that the consumption of described additive is 0.1～40 weight %.
5, according to the described pill sealing of one of claim 1～4 Wax composition, it is characterized in that, said composition further contains the additive that is selected from following one or more anion surfactants: high fatty alcohol, higher fatty acids and its esters, sulfonic acid and its esters, sulfuric ester and its esters, phosphate ester and its esters, total consumption is 0.1～30 weight %.
6, use Wax composition according to the described pill sealing of claim 5, it is characterized in that the consumption of described additive is 0.1～20 weight %.
7, according to the described pill sealing of one of claim 1～6 Wax composition, it is characterized in that, said composition further contains the non-ionic surface active agent that comprises polyethylene glycol type and polyhydric alcohol type, the polyethylene glycol type surfactant is selected from and comprises fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene carboxylate, the group of polyoxyethylene alkyl amine and polyxyethylated alkylolamides, EPE polyol EPE is selected from and comprises fatty acid glyceride, pentaerythritol fatty ester, Span, sorbitan fatty acid ester, the group of sugar esters and alkylolamides, total consumption is 0.1～20 weight %.
8, use Wax composition according to the described pill sealing of claim 7, it is characterized in that the consumption of additive is 0.1～10 weight %.
9, according to the described pill sealing of one of claim 1～8 Wax composition, it is characterized in that, said composition further contains the additive that is selected from following one or more materials: bentonite, kieselguhr, Kaolin, calcium carbonate and silicon dioxide, total consumption is 0.1～20 weight %.
10, use Wax composition according to the described pill sealing of claim 9, it is characterized in that the consumption of described additive is 0.1～15 weight %.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410042842XA CN100427146C (en) | 2004-05-26 | 2004-05-26 | Wax composition for sealing medicine pills |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410042842XA CN100427146C (en) | 2004-05-26 | 2004-05-26 | Wax composition for sealing medicine pills |
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| Publication Number | Publication Date |
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| CN1583176A true CN1583176A (en) | 2005-02-23 |
| CN100427146C CN100427146C (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200410042842XA Expired - Fee Related CN100427146C (en) | 2004-05-26 | 2004-05-26 | Wax composition for sealing medicine pills |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598965A (en) * | 2012-04-01 | 2012-07-25 | 常熟南师大发展研究院有限公司 | Honeycomb storage tank |
| CN102863802A (en) * | 2012-10-24 | 2013-01-09 | 佛山冯了性药业有限公司 | Inner packaging material for Chinese tradition medicine, and preparation of inner packaging material |
| CN103877589A (en) * | 2014-03-26 | 2014-06-25 | 佛山冯了性药业有限公司 | Traditional Chinese medicine pill protecting agent as well as preparation method and use thereof |
| CN105542490A (en) * | 2016-02-23 | 2016-05-04 | 柳州欧维姆机械股份有限公司 | Anticorrosion sealing wax for bridge cables and anchor heads and preparation method thereof |
| CN105860856A (en) * | 2016-04-29 | 2016-08-17 | 四川力久知识产权服务有限公司 | Leather polishing wax emulsion and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152924C (en) * | 2001-09-30 | 2004-06-09 | 北京石油化工学院材料与化工学院 | Wax composition containing no beeswax for sealing anticracking medicinal pill |
-
2004
- 2004-05-26 CN CNB200410042842XA patent/CN100427146C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598965A (en) * | 2012-04-01 | 2012-07-25 | 常熟南师大发展研究院有限公司 | Honeycomb storage tank |
| CN102863802A (en) * | 2012-10-24 | 2013-01-09 | 佛山冯了性药业有限公司 | Inner packaging material for Chinese tradition medicine, and preparation of inner packaging material |
| CN103877589A (en) * | 2014-03-26 | 2014-06-25 | 佛山冯了性药业有限公司 | Traditional Chinese medicine pill protecting agent as well as preparation method and use thereof |
| CN105542490A (en) * | 2016-02-23 | 2016-05-04 | 柳州欧维姆机械股份有限公司 | Anticorrosion sealing wax for bridge cables and anchor heads and preparation method thereof |
| CN105542490B (en) * | 2016-02-23 | 2018-07-03 | 柳州欧维姆机械股份有限公司 | A kind of bridge cable, anchor head resistance erosion sealing wax and preparation method thereof |
| CN105860856A (en) * | 2016-04-29 | 2016-08-17 | 四川力久知识产权服务有限公司 | Leather polishing wax emulsion and preparation method thereof |
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|---|---|
| CN100427146C (en) | 2008-10-22 |
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Granted publication date: 20081022 Termination date: 20110526 |