CN101209145B - Method for dyeing pearl - Google Patents
Method for dyeing pearl Download PDFInfo
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- CN101209145B CN101209145B CN2006101555474A CN200610155547A CN101209145B CN 101209145 B CN101209145 B CN 101209145B CN 2006101555474 A CN2006101555474 A CN 2006101555474A CN 200610155547 A CN200610155547 A CN 200610155547A CN 101209145 B CN101209145 B CN 101209145B
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- pearl
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- colouring method
- dyeing
- coloring agent
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- 238000004043 dyeing Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 96
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 44
- 239000000975 dye Substances 0.000 claims description 23
- 239000003086 colorant Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 18
- 239000003822 epoxy resin Substances 0.000 claims description 17
- 229920000647 polyepoxide Polymers 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000004040 coloring Methods 0.000 claims description 15
- 230000000740 bleeding effect Effects 0.000 claims description 14
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 12
- 239000004094 surface-active agent Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 11
- 241001044369 Amphion Species 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 239000012459 cleaning agent Substances 0.000 claims description 7
- 239000012895 dilution Substances 0.000 claims description 7
- 238000010790 dilution Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003599 detergent Substances 0.000 claims description 5
- 150000002576 ketones Chemical class 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000768 polyamine Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010186 staining Methods 0.000 abstract description 4
- 239000002932 luster Substances 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004925 denaturation Methods 0.000 description 2
- 230000036425 denaturation Effects 0.000 description 2
- 239000010437 gem Substances 0.000 description 2
- 229910001751 gemstone Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 102000035118 modified proteins Human genes 0.000 description 1
- 108091005573 modified proteins Proteins 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention relates to a dyeing method of a peal, which includes the preparation of a staining agent, the pretreatment of a peal and the dyeing the peal. Firstly, pretreatment is carried out to the staining agent and the peal to lead the bonding force between the staining agent and the peal to be greatly improved and simultaneously the peal is not damaged, thus ensuring that the peal is not easy to fade in a short time and improving the luster of the peal thereby promoting the level of the peal. Furthermore, the dyeing fluid of the peal can be repeatedly used for once or twice, thus decreasing cost and reducing pollution.
Description
(1) technical field
The present invention relates to the colouring method of a kind of pearl.
(2) background technology
The people of other countries are different to the hobby of pearl color, generally like the pearl of white with pink tone as the American, and the Indian likes flavous pearl, and the Turk likes blue or green pearl etc.At present, the pearl more than 90% all needs to carry out processing after gathering, to improve economic worth.Pearl all increases significantly at aspects such as iris, brightness, richness after the painted processing of suitable processing, gives that pearly-lustre sparkles, sparkling and crystal-clear brilliant sense, occupies an important position in pearl is handled so pearl is painted.But because pearl itself is exactly a kind of more enervated jewel, the application of a lot of process technologies all is restricted, and the value of pearl also is difficult to have lifting to a great extent again.At present, in the back processing of pearl is handled,, generally all pass through organic or inorganic two aspects and carry out painted pearl in order to make color evenly or satisfy client's requirement.Main method has: dyeing, protein denaturation are changed colour, radio isotope changes colour,
60Co irradiation change colour etc. carry out painted.The application of changing colour of protein denaturation is not very wide, and the protein content in the pearl itself is just lower, and is combined between the nacre more, is difficult to change the pearl color by modified protein.The width of cloth is present emerging process technology method according to modification, but owing to relate to cost than higher, has again by the threat of x radiation x simultaneously, application neither be very wide.It is main mainly still using dyeing at present.
Usually dyeing has two big class methods, one class is inorganic decoration method: as utilize the strong oxidizing property of liquor potassic permanganate, with it as dyestuff, pearl is dyed golden yellow to brown, but condition is difficult to control, careless slightlyly will destroy the pearl surface, the practical operation quite difficulty of getting up, and paler colour, dark color is partially secretly unglazed again; In addition, most of inorganic dyestuffs and pearl surface adhesion are not strong, very easily cause on the pearl surface to come off, and are difficult in the application as jewel level pearl surface; Second class is directly to use organic dye dyeing, and method is simple, and it is full bright-coloured to reach color and luster simultaneously, the effect of even dyeing; But the dyeing pearl of this type is faded easily, and dyefastness is very poor, fades easily at short notice.
(3) summary of the invention
The purpose of this invention is to provide a kind of method that pearl is dyeed, can effectively change the pearl color, improve pearly luster, improve the pearl class.
The technical solution used in the present invention is as follows:
The colouring method of a kind of pearl comprises the preparation of coloring agent, the preliminary treatment of pearl and the dyeing of pearl:
(1) preparation of coloring agent: the acetone soln of the epoxy resin of 60～80g/L of 1 parts by volume is added drop-wise in organic ketone solution of premetallized dye of 200～400g/L of 15～25 parts by volume, fully mixed, the regulator solution pH value is 8～9,30～50 ℃ of ultrasonic 20～40min, again with after 100 times of organic alcohol dilutions described coloring agent;
(2) preliminary treatment of pearl: the pearl of cleaning was soaked 3～5 days with surfactant, and dry, described surfactant is the methyl alcohol complex liquid of OP-10 and lauryl sodium sulfate, the methyl alcohol of per 100 parts by volume contains the OP-10 of 5 parts by volume, lauryl sodium sulfate concentration is 130～150g/L methyl alcohol, is preferably 140g/L methyl alcohol;
(3) dyeing of pearl: will impregnated in the coloring agent through pretreated pearl, and add bleeding agent, polyethylene glycol, levelling agent simultaneously, behind the mixing, 40～60 ℃ of sealings are incubated 4～6 days, dry the pearl that promptly gets high light pool, the back of dyeing after the cleaning.
Further, in the described step (3), the ratio that impregnated in 0.3～1 parts by volume coloring agent according to 1 mass parts pearl is mixed.
In the step (1), described premetallized dye is a neutral premetallized dyes, preferred oiliness premetallized dye ORANGE O-62 orange (other color also can).The optional acetone of described organic ketone, butanone, preferred acetone; The optional methyl alcohol of described organic alcohol, ethanol, particular methanol.
Also preferably in the acetone soln of epoxy resin, add curing agent in the step (1) simultaneously, the preferred polyethylene polyamine of described curing agent, the amount of adding is that 10～20% of epoxy resin quality is advisable, preferred 14%.
The optimum mixture ratio example of organic ketone solution of the acetone soln of epoxy resin and premetallized dye is 1: 20.
Further, in the preliminary treatment of step (2) pearl, described pearl is soaked in the solution of 40 ℃ of lower surface activating agents, dries after cleaning with cleaning agent earlier, and described cleaning agent is the alkalescent cleaning agent, can select greasy dirt detergent such as GR-922, family expenses cleaning agent OR28-V6.
Further, in the staining procedure of pearl (3), described bleeding agent optimization protein bleeding agent such as LD1201, described levelling agent are the both sexes levelling agent, as amphion nylon wool levelling agent KISIL.Washed with methanol is preferably used in described cleaning.
Concrete, the colouring method of aforesaid pearl carries out according to following steps:
(1) premetallized dye is dissolved in acetone, 30～50 ℃ of following stirring and dissolving, obtain the solution that premetallized dye concentration is 200～400g/L; Epoxy resin is dissolved in acetone, and adds the curing agent polyethylene polyamine, the quality of adding is 14% of an epoxy resin quality, and obtaining epoxy resin quality volumetric concentration is the solution of 70g/L; The acetone soln of the epoxy resin of 1 volume being added drop-wise in the acetone soln of premetallized dye of 20 volumes, fully mixing, is 8～9,40 ℃ of ultrasonic 30min of following 80Hz with sodium hydroxide solution regulator solution pH value, after 100 times of methyl alcohol dilutions, and must coloring agent;
(2) pearl is cleaned with greasy dirt detergent GR-922 after, dry, again under 40 ℃ in the surfactant of OP-10 and lauryl sodium sulfate fully submergence soaked 3 days and dried;
(3) pearl that step (2) is handled well mixes according to the ratio that the 100g pearl adds the coloring agent of 40ml with coloring agent, add bleeding agent LD1201 (the green allusion quotation chemical industry in Hangzhou Co., Ltd), polyethylene glycol, amphion nylon wool levelling agent KISIL, fully behind the mixing, 40 ℃ seal water bath heat preservation 5 days, use washed with methanol then, promptly get the pearl in the high light pool after dyeing after drying.
Reusable 1～2 time of described coloring agent.
The present invention compared with prior art, its beneficial effect is embodied in:
At first dyestuff and pearl are carried out preliminary treatment, made the adhesion of dyestuff and pearl obtain improving significantly, do not damaged pearl again, made pearl be not easy at short notice to fade, improved the gloss of pearl again simultaneously, promoted the class of pearl.Dyeing pearl liquid can reuse one to twice in addition, has reduced cost, has reduced pollution.
(4) specific embodiment:
Below with specific embodiment technical scheme of the present invention is described, but protection scope of the present invention is not limited thereto:
Embodiment 1
(1) preparation of coloring agent: be equipped with in the reaction bulb of agitator at 250ml, add the orange 30g of premetallized dye ORANGE O-62 (the good graceful development in science and technology in Changsha Co., Ltd), add acetone 100ml, fully after the dissolving, 40 ℃ of constant temperature are standby, the acetone soln 5ml of measuring concentration behind the 10min and be the epoxy resin of 70g/L slowly drips in the above-mentioned reaction bulb, and constantly stirs; After dripping off, the NaOH solution with 1% is regulated PH to 8～9, and the usefulness ultrasonic wave is at 80HZ, 40 ℃ of following ultrasonic 30min at last, and mixed liquor promptly obtains dyeing liquor with 100 times of methyl alcohol dilutions, and is stand-by.
(2) preliminary treatment of pearl: the low light level pearl of selecting a collection of bleaching, after the GR-922 cleaning, fully dry, soaked 3 days with surfactant again, taking-up is dried, described surfactant is the methyl alcohol complex liquid of OP-10 and lauryl sodium sulfate, and OP-10 concentration is 0.05ml/ml methyl alcohol, and lauryl sodium sulfate concentration is 140g/L methyl alcohol.
(3) dyeing of pearl: the pearl 250g that preliminary treatment is good puts in the wide-mouth bottle of 250ml, add above standby dyeing liquor 100ml, add bleeding agent LD1201, polyethylene glycol, each 1ml of amphion nylon wool levelling agent KISIL simultaneously, after fully shaking up, sealing is placed in 40 ℃ the thermostat water bath and handled 5 days, washed with methanol, obtains the damp golden yellow pearl of high light after drying.
Embodiment 2:
(1) preparation of coloring agent: be equipped with in the reaction bulb of agitator at 250ml, add the red 40g of premetallized dye RED R-122 (the good graceful development in science and technology in Changsha Co., Ltd), add acetone 100ml, fully after the dissolving, 40 ℃ of constant temperature are standby, the acetone soln 5ml of measuring concentration behind the 10min and be the epoxy resin of 70g/L slowly drips in the above-mentioned reaction bulb, and constantly stirs; After dripping off, the NaOH solution with 1% is regulated PH to 8～9, and the usefulness ultrasonic wave is at 80HZ, 40 ℃ of following ultrasonic 30min at last, and mixed liquor promptly obtains dyeing liquor with 100 times of methyl alcohol dilutions, and is stand-by.
(2) preliminary treatment of pearl: the low light level pearl of selecting a collection of bleaching, after the detergent cleaning, fully dry, soaked 3 days with surfactant again, taking-up is dried, described surfactant is the methyl alcohol complex liquid of OP-10 and lauryl sodium sulfate, and OP-10 concentration is 0.05ml/ml methyl alcohol, and lauryl sodium sulfate concentration is 140g/L methyl alcohol.
(3) dyeing of pearl: the pearl 300g after will handling puts in the wide-mouth bottle of 250ml, add above standby pretreatment fluid 100ml, add bleeding agent LD1201, polyethylene glycol, each 1ml of amphion nylon wool levelling agent KISIL simultaneously, after fully shaking up, sealing is placed in 40 ℃ the thermostat water bath and handled 5 days, washed with methanol, obtains the damp red pearl of high light after drying.
Embodiment 3:
(1) preparation of coloring agent: be equipped with in the reaction bulb of agitator at 250ml, add the blue 20g of premetallized dye BLUE BL-03 (the good graceful development in science and technology in Changsha Co., Ltd), add acetone 100ml, fully after the dissolving, 40 ℃ of constant temperature are standby, the acetone soln 5ml of measuring concentration behind the 10min and be the epoxy resin of 70g/L slowly drips in the above-mentioned reaction bulb, and constantly stirs; After dripping off, the NaOH solution with 1% is regulated PH to 8～9, and the usefulness ultrasonic wave is at 80HZ, 40 ℃ of following ultrasonic 30min at last, and mixed liquor promptly obtains dyeing liquor with 100 times of methyl alcohol dilutions, and is stand-by.
(2) preliminary treatment of pearl: the low light level pearl of selecting a collection of bleaching, after the detergent cleaning, fully dry, soaked 3 days with surfactant again, taking-up is dried, described surfactant is the methyl alcohol complex liquid of OP-10 and lauryl sodium sulfate, and OP-10 concentration is 0.05ml/ml methyl alcohol, and lauryl sodium sulfate concentration is 140g/L methyl alcohol.
(3) dyeing of pearl: the pearl 200g that preliminary treatment is good puts in the wide-mouth bottle of 250ml, add above standby dyeing liquor 100ml, add bleeding agent LD1201, polyethylene glycol, each 1ml of amphion nylon wool levelling agent KISIL simultaneously, after fully shaking up, sealing is placed in 40 ℃ the thermostat water bath and handled 5 days, washed with methanol, obtains the damp blue pearl of high light after drying.
Embodiment 4:
Get the dye liquor 100ml that obtains behind the dyeing pearl among the embodiment 1, pretreated pearl 200g learns from else's experience, put into the wide-mouth bottle of 250ml, add polyethylene glycol, amphion nylon wool levelling agent KISIL, each 1ml of bleeding agent LD1201 simultaneously, add the acetone soln that 1ml concentration is the epoxy resin of 70g/L again, after fully shaking up, 40 ℃ of lower seals are placed and were handled 5 days, take out, washed with methanol, obtain the damp golden yellow pearl of high light after drying.
Embodiment 5
The pearl that the pearl and the inorganic method of the golden yellow pearl of embodiment 1 preparation and general organic method dyeing dyeed compares, and its performance comparison is as follows:
| Colouring method | Dye uniformity | Glossiness | Dyefastness | Dye-uptake |
| Inorganic dyeing | Inhomogeneous, very easily long spot | Good | Good | Bad |
| Organic dyeing | Evenly | Generally | Bad fugitive color | Good |
| The inventive method | Evenly | Very good | Good | Good |
Claims (9)
1. the colouring method of a pearl is characterized in that described colouring method comprises the preparation of coloring agent, the preliminary treatment of pearl and the dyeing of pearl:
(1) preparation of coloring agent: the quality volumetric concentration that the acetone soln of the epoxy resin of 60～80g/L of 1 parts by volume is added drop-wise to 15～25 parts by volume is in organic ketone solution of premetallized dye of 200～400g/L, fully mixed, the regulator solution pH value is 8～9,30～50 ℃ of ultrasonic 20～40min, again with after 100 times of organic alcohol dilutions described coloring agent; Described premetallized dye is a neutral premetallized dyes;
(2) preliminary treatment of pearl: the pearl of cleaning was soaked 3～5 days with surfactant, and dry, described surfactant is the methyl alcohol complex liquid of OP-10 and lauryl sodium sulfate, the methyl alcohol of per 100 parts by volume contains the OP-10 of 5 parts by volume, and lauryl sodium sulfate concentration is 130～150g/L methyl alcohol;
(3) dyeing of pearl: will impregnated in the coloring agent through pretreated pearl, and add bleeding agent, polyethylene glycol, levelling agent simultaneously, behind the mixing, 40～60 ℃ of sealings are incubated 4～6 days, dry the pearl that promptly gets high light pool, the back of dyeing after the cleaning; Described bleeding agent is the albumen bleeding agent.
2. the colouring method of pearl as claimed in claim 1 is characterized in that 1 mass parts pearl impregnated in 0.3～1 parts by volume coloring agent.
3. the colouring method of pearl as claimed in claim 1 is characterized in that described pearl earlier with the cleaning agent cleaning, and described cleaning agent is the alkalescent cleaning agent.
4. the colouring method of pearl as claimed in claim 1 is characterized in that described bleeding agent is albumen bleeding agent LD1201.
5. the colouring method of pearl as claimed in claim 1 is characterized in that described levelling agent is amphion nylon wool levelling agent KISIL.
6. the colouring method of pearl as claimed in claim 1 is characterized in that cleaning in the described step (3) is for using washed with methanol.
7. the colouring method of pearl as claimed in claim 1 is characterized in that the described organic ketone of described step (1) is acetone or butanone, and organic alcohol is methyl alcohol or ethanol.
8. as the colouring method of the described pearl of one of claim 1～7, it is characterized in that:
In step (1): with premetallized dye be dissolved in acetone, 30～50 ℃ of following stirring and dissolving, obtain the solution that premetallized dye concentration is 200～400g/L; Epoxy resin is dissolved in acetone, and adds the curing agent polyethylene polyamine, the quality of adding is 14% of an epoxy resin quality, and obtaining epoxy resin quality volumetric concentration is the solution of 70g/L; The acetone soln of the epoxy resin of 1 volume being added drop-wise in the acetone soln of premetallized dye of 20 volumes, fully mixing, is 8～9,40 ℃ of ultrasonic 30min of following 80Hz with sodium hydroxide solution regulator solution pH value, after 100 times of the methyl alcohol dilutions, and must coloring agent;
In step (2): after pearl cleaned with greasy dirt detergent GR-922, dry, again under 40 ℃ in the surfactant of OP-10 and lauryl sodium sulfate submergence soaked 3 days and dried;
In step (3): the pearl that step (2) is handled well mixes according to the ratio that the 100g pearl adds the coloring agent of 40ml with coloring agent, add bleeding agent LD1201, polyethylene glycol, amphion nylon wool levelling agent KISIL, fully behind the mixing, 40 ℃ seal water bath heat preservation 5 days, use washed with methanol then, promptly get the pearl in the high light pool after dyeing after drying.
9. the colouring method of pearl as claimed in claim 1 is characterized in that described coloring agent repeated use 1～2 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101555474A CN101209145B (en) | 2006-12-28 | 2006-12-28 | Method for dyeing pearl |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101555474A CN101209145B (en) | 2006-12-28 | 2006-12-28 | Method for dyeing pearl |
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| CN101209145A CN101209145A (en) | 2008-07-02 |
| CN101209145B true CN101209145B (en) | 2011-11-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100574667C (en) * | 2008-11-25 | 2009-12-30 | 中国科学院南海海洋研究所 | The method for dyeing pearl that a kind of nano-sized carbon combines with reactive dye |
| CN101940396B (en) * | 2010-09-19 | 2012-03-28 | 绍兴文理学院 | Pearl eosin dyeing method |
| CN102258239A (en) * | 2011-04-29 | 2011-11-30 | 广东海洋大学 | Method for processing colorized pearls |
| CN103284419B (en) * | 2012-02-24 | 2015-08-12 | 广州市祺福珍珠加工有限公司 | A kind of method optimizing seawater pearl color |
| FR3004622B1 (en) * | 2013-04-23 | 2015-10-02 | Robert Wan Luxury Ltd | METHOD FOR FINISHING PEARLS |
| CN103919339B (en) * | 2014-05-04 | 2016-03-30 | 广东海洋大学 | A kind of method for dyeing pearl |
| CN107260762B (en) * | 2017-05-13 | 2020-08-07 | 蚌埠永济堂医药有限公司 | Processing method of abalone shell decoction pieces |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2134145A1 (en) * | 1997-06-26 | 1999-09-16 | Esteban Clementina Martin | Process for the treatment of pearls |
| CN1663365A (en) * | 2005-03-15 | 2005-09-07 | 中国海洋大学 | Dyeing liquor for marine cultured pearl and preparing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2134145A1 (en) * | 1997-06-26 | 1999-09-16 | Esteban Clementina Martin | Process for the treatment of pearls |
| CN1663365A (en) * | 2005-03-15 | 2005-09-07 | 中国海洋大学 | Dyeing liquor for marine cultured pearl and preparing method thereof |
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