CN1211364C - New type salt compound of indole stryrene and application in high density recording media - Google Patents
New type salt compound of indole stryrene and application in high density recording media Download PDFInfo
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- CN1211364C CN1211364C CN 02122033 CN02122033A CN1211364C CN 1211364 C CN1211364 C CN 1211364C CN 02122033 CN02122033 CN 02122033 CN 02122033 A CN02122033 A CN 02122033A CN 1211364 C CN1211364 C CN 1211364C
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Abstract
The present invention relates to a novel indole styrene salt compound and an application thereof in a high-density recordable optical disc. The present invention utilizes a novel indole styrene salt compound dye to form a recording layer of the high-density recordable optical disc. Due to the fact that the novel indole styrene salt compound is easy to synthesize and purify, compared with a compound generally applied to the high-density recordable optical disc, the cost of the salt compound is lower, and the efficiency of reducing the cost can be reached. The novel indole styrene salt compound is characterized by greatly absorbing waves of which the length is between 500 nanometers to 700 nanometers, and the novel indole styrene salt compound has high sensitivity and high chemical stability for light and heat. Consequently, the recording layer of the high-density recordable optical disc, formed by the novel indole styrene salt compound, can be matched with laser light of which the wave length is shorter, used by the high-density recordable optical disc, and the recording layer has the advantage of stable quality.
Description
Technical field
The invention relates to a kind of new type salt compound of indole stryrene (indolestyrylcompounds) and in the application of high-density recording medium.
Background technology
Along with the arriving of information and multimedia era, comprise that 3C (Computer, Communication, the Consumer Electronics) product of computer, communication, consumer electronics constantly increases for the storage density of Storage Media and the demand of capacity.Because the circulation of bulk information needs higher, the more miniaturization of storage density, and the lower Storage Media of cost of manufacture.General magnetic Storage Media has not been inconsistent required, and the target that highdensity media for storing optical information is researched and developed just.With regard to media for storing optical information, there are some principles that improve its recording density and method to be suggested at present, wherein outbalance and in that in the recent period successfully to develop including of its process technique several.One shortens the wavelength that reads laser light source, for example changes laser light source into the blue light laser by the ruddiness laser, also can be set about by the numerical aperture that improves camera lens.Its two, the mode of utilization improvement digital signal coding or with the video disc recording mode of so-called super resolution near field optic structure.Above method all can effectively improve storage density.
In addition, media for storing optical information goal in research on the other hand is the employed organic dye of optical recording layer for a change then, the dyestuff that exploitation has better optical property.In recent years, to have a low price, burn writing speed fast, easy to carry and become new lover in the recording medium with the compatible advantages of higher of Personal Computer (PC) owing to only writing only disposable optical disk (CD-R).Meanwhile, its employed recording layer organic dye also becomes the emphasis of falling over each other to develop, and its development simultaneously also trends towards saturated state.Therefore, develop the employed dyestuff of dispensable mould DVD-R disc plate (Digital Versatile Disc) of only writing that cooperates more highdensity information storage medium such as memory capacity can reach 4.7GB and promptly become the emphasis of present research.Because high density storage medium such as the employed laser wavelength of DVD-R disc plate are that 650nm is different with the employed laser wavelength of CD-R disc plate 780nm, so that dyestuff can't be shared, be imperative so the employed recording layer organic dye of high density storage medium is developed in redesign.
Summary of the invention
The object of the present invention is to provide a kind of new type salt compound of indole stryrene (indolestyryl compounds), the characteristic of this salt compound of indole stryrene (indolestyrylcompounds) is for (visible region of λ=500nm-700nm) has very big absorption between wavelength 500 nanometer to 700 nanometers, and have high sensitive and for the splendid chemical stability of light and heat, and organic solvent is had good solubility.
Another object of the present invention is to provide a kind of high density information Storage Media of using this salt compound of indole stryrene dyestuff, the present invention utilizes this salt compound of indole stryrene dyestuff to form the recording layer of high density information Storage Media.
For reaching above-mentioned purpose, the invention provides a kind of new type salt compound of indole stryrene (indolestyryl compounds), have chemical formula (I) structure, be expressed as follows in the icon mode:
In chemical formula structure (I), R
1, R
2, R
3, R
4, R
5And Y
-Representative connects the group of chemical formula structure different positions respectively.R wherein
1For containing 1 to 8 carbon (C
1-C
8) alkyl, phenyl ring ester group (CH
2C
6H
4CO
2R
6), straight chain alkyl sulfonic acid ester group (CH
2)
nSO
3R
7Or straight chain carbalkoxy (CH
2)
nCO
2R
7Y
-Can be four cyano-to quino bismethane (TCNQ
-, teteacyano-p-quinodimethane), tetracyanoethylene (TCNE
-, tetracyanoethylene), cross chlorate anions (ClO
4 -), hexafluoro antimonate (SbF
6 -), hexafluorophosphate (PF
6 -), a tetrafluoro borate (BF
4) and halide-ions one of them.
And R
2And R
3Be identical or different group, can be respectively hydrogen atom, contain 1 to 8 carbon (C
1-C
8) alkyl, contain 1 to 8 carbon (C
1-C
8) alkoxyl group and contain 1 to 8 carbon (C
1-C
8) carbalkoxy (CO
2R
8) one of them; And, R
2And R
3The formation nitrogen heterocyclic ring also can link to each other.
R
4And R
5Be identical or different group, can be respectively hydrogen atom, contain 1 to 8 carbon (C
1-C
8) alkyl, trifluoromethyl, alkoxyl group, carboxyl, nitro, amide group (CONR
9R
10), sulfonic group, sulfonate group (SO
3R
11), contain the carbalkoxy of 1 to 8 carbon and halogen atom group group one of them;
In addition, Y
-Selection need cooperate R
1, R
1For containing 1 to 8 carbon (C
1-C
8) alkyl the time, Y
-Need to select TCNQ
-(teteacyano-p-quinodimethane) and TCNE
-(tetracyanoetylene) one of them; In addition, work as R
1Select phenyl ring ester group (CH
2C
6H
4CO
2R
6), straight chain alkyl sulfonic acid ester group (CH
2)
nSO
3R
7And straight chain carbalkoxy (CH
2)
nCO
2R
7One of them the time, Y
-Be chosen as four cyano-to quino bismethane (TCNQ
-, teteacyano-p-quinodimethane), tetracyanoethylene (TCNE
-, tetracyanoethylene), cross chlorate anions (ClO
4 -), hexafluoro antimonate (SbF
6 -), hexafluorophosphate (PF
6 -), a tetrafluoro borate (BF
4) and halide-ions one of them.
R in new type salt compound of indole stryrene (indolestyryl compounds) chemical formula
1Be straight chain carbalkoxy (CH
2)
nCO
2R
7The time, R
7Be alkyl or the fluoroalkyl (C that contains 1 to 8 carbon
2F
4, CF
3).
R when the chemical formula of new type salt compound of indole stryrene
4And R
5Be C
1-C
8Carbalkoxy (CO
2R
8) time, R
8Can be the alkyl or the fluoroalkyl (C that contain 1 to 8 carbon
2F
4, CF
3); R
4And R
5If amide group (CONR
9R
10) time, R
9And R
10Can be identical or different groups, wherein R
9And R
10Can be hydrogen atom or contain the alkyl of 1 to 6 carbon; As R
4And R
5Be sulfonate group (SO
3R
11) time, R
11Can be hydrogen atom or contain the alkyl of 1 to 6 carbon.The selection of above-mentioned group can be applicable to respectively in the chemical formula (I).
In addition, in the process of preparation new type salt compound of indole stryrene of the present invention, need to carry out the coupled reaction of compound (II) and compound (III), synthesis of indole vinylbenzene salt compound (indolestyryl compounds) under the environment of organic solvent.
The preparation method of the present invention's new type salt compound of indole stryrene, for:
Compound (II) and compound (III) are carried out coupled reaction can obtain being with halide-ions (X under the environment of organic solvent
-) salt compound of indole stryrene (IV):
At last, shown in following reaction formula, get the band halide-ions salt compound of indole stryrene (IV) and lithium, sodium and one of them salt compounds of potassium (LiY, NaY, KY) in organic solvent, carry out down ion exchange reaction get final product the novel cpd of chemical formula (I).
New type salt compound of indole stryrene of the present invention can directly apply to the general DVD disc plate and the recording layer of other high density information Storage Media.
High-density recordable CD provided by the invention includes: first substrate, this substrate are the transparency carriers with groove; Recording layer, this recording layer is formed at first substrate surface by the new type salt compound of indole stryrene dyestuff; And be disposed at reflecting layer on the recording layer; Second substrate is for having the transparency carrier of groove; Again with the laminating layer applying reflecting layer and second substrate.
Above-mentioned first substrate and second substrate are respectively a transparency carrier with ditch rail (land) and groove (groove), and its gauge (track pitch) is 0.3 micron to 0.8 micron (μ m), and ditch depth (Groove depth) is 70 nanometer to 200 nanometers (nm); Substrate material can be polyester, polycarbonate-based (Polycarbonat, PC), polyalkenes etc. (PMMA, MCOC).
Its recording layer generation type can adopt modes such as rotary coating, vacuum evaporation, spray cloth, roll extrusion coating or impregnation, is the best in the rotary coating mode wherein, and the recording layer thickness of formation is the best with 70 nanometer to 250 nanometers (nm).
The organic solvent of coating usefulness can be and contains 1 to 6 carbon (C
1-6) alcohols (alcohol), contain 1 to 6 carbon (C
1-6) ketone (ketone), contain 1 to 6 carbon (C
1-6) ethers (ether), halogen compounds naphthenic and acid amides (amide) one of them.Wherein, alcohols can be methyl alcohol (methanol), ethanol (ethanol), Virahol (isopropanol), diacetone alcohol (diacetonalchol; DAA), 2,2,3,3-C3-Fluoroalcohol (2,2,3,3-tetrafluoropropanol), ethapon (trichloroethanol), ethylene chlorhydrin (2-chloroethanol), octafluoro defend alcohol (octafluoropentanol) or hexafluoro butanols (hexafluorobutanol); Ketone can be acetone (acetone), mibk (methyl isobutyl ketone; MIBK), methyl ethyl ketone (methyl ethylketone, MEK) or 3-hydroxy-3-methyl-2-butanone (3-hydroxy-3-methyl-2-butanone); Halogen compounds can be chloroform (chloroform), methylene dichloride (dichloromethane) or 1-chlorobutane (1-chlorobutane); Acid amides can be dimethyl formamide (dimethylformamide, DMF) or N,N-DIMETHYLACETAMIDE (dimethylacetamide, DMA); Naphthenic be methylcyclohexane (Methylcyclohexane, MCH).
In addition, the reflecting layer material of sputter on recording layer can be metal or its alloy materials such as gold and silver, aluminium, silicon, copper, silver-colored titanium alloy, silver-colored chromium, silver-bearing copper; The mode of first substrate and second substrate of fitting can be utilized method of spin coating, wire mark, hot melt adhesive method, double sticky tape applying method etc.
New type salt compound of indole stryrene disclosed by the invention has the characteristics of synthetic easy and easy purifying.In addition, to compare price comparatively cheap for the present invention and the compound that generally can be applicable to DVD disc plate dyestuff.The R1 side group that new type salt compound of indole stryrene had can promote the lightsensitivity of its structure and the splendid chemical stability for light and heat.And new type salt compound of indole stryrene has more the rotary coating process that splendid solubleness is beneficial to disc plate for organic solvent.Therefore, new type salt compound of indole stryrene is used in the high-density recordable CD, form the recording layer of high-density recordable CD with the new type salt compound of indole stryrene dyestuff, to compare price comparatively cheap with the compound that generally is applied to high density information Storage Media dyestuff, can reach the effect that reduces cost.And the laser light that can cooperate the employed shorter wavelength of high-density recordable mating plate has the advantage of stay in grade.
Description of drawings
Fig. 1 is chemical formula (I) synoptic diagram of new type salt compound of indole stryrene;
Fig. 2 is the Application Example synoptic diagram of the high-density recordable CD of use new type salt compound of indole stryrene dyestuff;
Fig. 3 is the spectrogram of the high-density recordable CD reflectivity of Application Example 3 of the present invention to wavelength.
Below in conjunction with specific embodiment and accompanying drawing thereof the present invention is described in further detail.
Embodiment
Embodiment 1 is the novel cpd of synthetic chemistry formula (I), please refer to Fig. 1.
With 5 its R of gram initiator (II)
1For-CH
2C
6H
4CO
2CH
3Reach 2.4 and digest wherein R of compound (III)
2, R
3Be identical-C
2H
5, be dissolved in the 120ml ethanol, and be heated to alcoholic acid reflux temperature reaction 11 hours; After question response was intact, oven dry can get green solid crystallization (A) after filtration, and its chemical formula is (IV), R wherein
4And R
5Be hydrogen atom=H, X
-Be iodide ion, reaction yield 83%.Behind Physical Property Analysis, the absorbing wavelength that records compound (A) is 566 nanometer (UV
Max=566nm).One of them carries out ion exchange reaction under in organic solvent with compound (A) and different lithium, sodium and potassium ion compound again, can form multiple novel cpd with chemical formula (I).Below enumerate ion exchange reaction institute synthetic novel cpd that compound (A) and different compounds carry out make flow process with and character:
(1) gets solid crystal 2.84 gram and sodium hexafluoroantimonate (NaSbF of compound (A)
6) 1.5 grams are dissolved in the ethanol of 50 milliliters (ml), and reflux to be carrying out ion exchange, question response is intact after filtering drying can get compound (B, Formula I, the R of deep green solid crystal
4, R
5=H, Y
-=SbF
6 -), its reaction yield 89% as calculated, behind Physical Property Analysis, the absorbing wavelength that records compound (B) is 566 nanometer (UV
Max=566nm), uptake factor (ε)=1.09 * 10
5
(2) solid crystal 2.84 gram of getting compound (A) is dissolved in the ethanol of 50 milliliters (ml) with LiTCNQ 1.6 grams, and adds thermogenesis and reflux to carry out ion exchange, and question response is intact after filtering drying can get golden yellow green solid crystalline compound (C, Formula I, R
4, R
5=H, Y
-=TCNQ
-), its reaction yield 86% as calculated, behind Physical Property Analysis, the absorbing wavelength that records compound (C) is 566 nanometer (UV
Max=566nm), ε=1.26 * 10
5
Embodiment 2
Be similarly synthetic novel cpd, wherein side group R with chemical formula (I)
1For-(CH
2)
4CO
2CH
3
9 grams had the compound of chemical formula (II) and compound that 4.3 grams have chemical formula (III) as initiator, R wherein
1For-(CH
2)
4CO
2CH
3, R
2, R
3For be connected to nitrogen heterocyclic ring it
Be dissolved in 100 milliliters of ethanol, and be heated to alcoholic acid reflux temperature reaction 11 hours; After question response was intact, oven dry can get green solid crystalline compound (G, Formula I V, R after filtration
4, R
5=H, X=I
-), its reaction yield 86%.Behind Physical Property Analysis.The absorbing wavelength that records compound (G) is 557 nanometer (UV
Max=557nm).One of them carries out ion exchange reaction under in organic solvent with the ionic compound of compound (G) and different lithium, sodium and potassium again, can form multiple novel cpd with chemical formula (I).The preparation flow of below enumerating the ion exchange reaction institute synthetic novel cpd that compound (G) and different compounds carry out with and character:
Get solid crystal 2.5 grams and sodium hexafluoroantimonate (NaSbF of compound (G)
6) 1.4 grams are dissolved in the ethanol of 50 milliliters (ml), and reflux to be carrying out ion exchange, question response is intact after filtering drying can get compound (H, Formula I, the R of deep green solid crystal
4, R
5=H, Y
-=SbF
6 -), its reaction yield 93% as calculated, behind Physical Property Analysis, the absorbing wavelength that records compound (H) is 557 nanometer (UV
Max=557nm).
Wherein, the embodiment of the invention 1 and embodiment 2 formed compounds (A) be salt compound of indole stryrene (G) with iodide ion.And then in organic solvent, carry out ion exchange with various lithiums, sodium and sylvite compounds.Intact after the filtering drying of question response get final product new type salt compound of indole stryrene of the present invention (B), (C), (D), (E), (F) and (H).The chemical formula and the maximum absorption wavelength of each novel cpd are represented with forms mode, as shown in Table 1:
Table one is the chemical formula and the maximum absorption wavelength of salt compound of indole stryrene
By the new type salt compound of indole stryrene of embodiment of the invention gained, pass through the step of suitable dilution and processing again, promptly can be applicable to high density compact disc sheet dyestuff.And can obtain the required character of high density compact disc sheet dyestuff by the new type salt compound of indole stryrene that mixes more than one.
Further again, new type salt compound of indole stryrene is used in the record layer of high-density recordable CD.With reference to Fig. 2, it is the Application Example synoptic diagram of the high-density recordable CD of use new type salt compound of indole stryrene dyestuff, and include: one first substrate 10 is transparency carrier; One recording layer 20, recording layer 20 is formed on first substrate, 10 surfaces by the new type salt compound of indole stryrene dyestuff; And being disposed at reflecting layer 30 on the recording layer 20, reflecting layer 30 is coated with resin protective layer 40; Second substrate 60 is transparency carrier; And a laminating layer, laminating layer 50 be used to the fit resin protective layer 40 and second substrate 60.
Wherein, have a new type salt compound of indole stryrene of chemical formula (I) structure as the aforementioned, can cooperate different ionic groups to be made up for used in the present invention.
Embodiment 3
Use the new type salt compound of indole stryrene dyestuff can learn by Application Example 3 of the present invention in the material selection and the method for making thereof of high-density recordable CD.Below be the making step of the embodiment of the invention 3, its step includes:
At first, get new type salt compound of indole stryrene 1.8g and be dissolved in 2,2,3, the 3-C3-Fluoroalcohol (2,2,3,3-tetrafluoropropanol) in, and be mixed with the solution of 100g; With this soln using coating method, coat on first substrate 10 again; Dry processing procedure then, at the recording layer 20 of substrate surface formation one deck new type salt compound of indole stryrene, thickness is 70-250nm; The jet-plating metallization material to be forming reflecting layer 30 on recording layer 20, and then coating last layer resin protective layer 40; One second substrate is provided at last, and thickness is 0.6mm, and utilizes a laminating layer to combine with resin protective layer 40 second substrate, promptly finishes a high-density recordable CD, and thickness is 120mm.
This high-density recordable CD reflectivity is to the spectrogram of wavelength, as shown in Figure 3, wavelength be 635 nanometers (nm) to 650 nanometers (nm), its reflectivity is all greater than 45%.
Embodiment 4
The evaluation test machine that further with the embodiment of the invention 3 usefulness models is PULSTEC DDU-1000 is write record and read test.
It is as follows that it writes the record condition: normal linear velocity (Constant Linear Velocity; CLV) be that 3.5 (meter per second) m/s, wavelength are 658 nanometers (nm), numerical value radius (Numerical Aperture; NA) be 0.6, write the record power be 7-14 milliwatt (mW).
Reading conditions is as follows: normal linear velocity (CLV) is that 3.5 (meter per second) m/s, wavelength are that 658 nanometers (nm), numerical value radius (NA) are 0.6, readout power is 0.5-1.5 milliwatt (mW).Table two is the embodiment of the invention and writes the CNR value of recording under the power in difference.
Table two:
| Write record power (mW) | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 3T CNR(dB) | 39.0. | 44.5 | 50.2 | 55.5 | 57.2 | 58.9 | 59.2 | 59.2 |
Can find out that by table two its CNR value all can be greater than 50dB when writing record power when 9mW is above.Represent that the produced high density compact disc sheet of practical application example of the present invention has the good chemical stability of susceptibility height, light and heat.
Though preferred embodiment of the present invention as mentioned above; right its is not in order to limit the present invention; anyly be familiar with correlation technique person; in not breaking away from flesh and blood scope of the present invention; may do to change and implement the present invention slightly to technical solution of the present invention, therefore scope of patent protection of the present invention must be looked this specification sheets appending claims and is as the criterion.
Claims (21)
1. salt compound of indole stryrene, it has following chemical structural formula:
This chemical structural formula consists of:
R
1Be selected from CH
2C
6H
4CO
2R
6
R
2And R
3Be respectively identical or different group, be selected from hydrogen atom, C
1-8Alkyl, C
1-8Alkoxyl group, C
1-C
8Alkyl-COOR
8And R
2And R
3Link to each other to form group group that nitrogen heterocyclic ring forms one of them;
R
4And R
5Be selected from hydrogen atom, C
1-8Alkyl, trifluoromethyl, carboxyl, nitro, sulfonic group ,-SO
3R
11,-CONR
9R
10, C
1-C
8Alkyl-COOR
8The group group of forming with halogen atom one of them;
Y-is selected from TCNQ
-, TCNE
-, ClO
4 -, SbF
6 -, PF
6 -, BF
4With halide-ions one of them;
R
6Be selected from C
1-8Alkyl and C
2F
4, CF
3The group group of being formed one of them;
R
8Be selected from C
1-C
8Alkyl and C
2F
4, CF
3The group group of being formed one of them;
Wherein:
Work as R
4And R
5For-CONR
9R
10The time, R
9With R
10Be hydrogen atom and C
1-6The group group that alkyl is formed one of them;
Work as R
4And R
5For-SO
3R
11The time, R
11Be hydrogen atom and C
1-6The group group that alkyl is formed one of them.
2. high-density recordable CD, it includes:
One first substrate is transparency carrier;
One recording layer, this recording layer are to be formed at first substrate surface by the described salt compound of indole stryrene of claim 1;
One reflecting layer is disposed on this recording layer;
One second substrate is transparency carrier; And
One laminating layer is in order to this reflecting layer and this second substrate of fitting.
3. high-density recordable CD as claimed in claim 2, wherein R
6Be selected from C
1-8Alkyl and C
2F
4, CF
3The group group of being formed one of them.
4. high-density recordable CD as claimed in claim 2 is wherein worked as R
4And R
5Be C
1-8-CO
2R
8The time, R
8Be selected from C
1-C
8Alkyl and C
2F
4, CF
3The group group of being formed one of them.
5. high-density recordable CD as claimed in claim 2 is wherein worked as R
4And R
5For-CONR
8R
10The time, R
9With R
10Be hydrogen atom and C
1-6The group group that alkyl is formed one of them.
6. high-density recordable CD as claimed in claim 2 is wherein worked as R
4And R
5For-SO
3R
11The time, R
11Be hydrogen atom and C
1-6The group group that alkyl is formed one of them.
7. high-density recordable CD as claimed in claim 2, this first substrate and this second substrate are one to have the transparency carrier of ditch rail and groove, and its gauge is 0.3 micron to 0.8 micron, and ditch depth is 70 nanometer to 200 nanometers.
8. high-density recordable CD as claimed in claim 2, wherein the material of this first substrate and this second substrate be polyester, polycarbonate-based and polyalkenes one of them.
9. high-density recordable CD as claimed in claim 2, wherein this recording layer generation type is that this salt compound of indole stryrene is seen through wherein one of method of rotary coating, vacuum evaporation, spray cloth, roll extrusion coating and impregnation.
10. high-density recordable CD as claimed in claim 2, wherein the thickness of this recording layer is 70 nanometer to 250 nanometers.
11. high-density recordable CD as claimed in claim 2, wherein the generation type of this recording layer is salt compound of indole stryrene to be dissolved in an organic solvent coat this first substrate surface with rotating coating again.
12. high-density recordable CD as claimed in claim 11, wherein this organic solvent is for containing C
1-6Alcohol, C
1-6Ketone, C
1-6Ether, halogen compounds, naphthenic and acid amides one of them.
13. high-density recordable CD as claimed in claim 12, wherein said C
1-6Alcohol is methyl alcohol, ethanol, Virahol, diacetone alcohol, 2,2,3,3-C3-Fluoroalcohol, ethapon, ethylene chlorhydrin, octafluoro defend alcohol, hexafluoro butanols one of them.
14. high-density recordable CD as claimed in claim 12, wherein C
1-6Ketone be acetone, mibk, methyl ethyl ketone and 3-hydroxy-3-methyl-2-butanone one of them.
15. high-density recordable CD as claimed in claim 12, wherein said halogen compounds be chloroform, methylene dichloride, and 1-chlorobutane one of them.
16. as high-density recordable CD as claimed in claim 12, wherein said naphthenic is a methylcyclohexane.
17. high-density recordable CD as claimed in claim 12, wherein said acid amides be dimethyl formamide, and N,N-DIMETHYLACETAMIDE one of them.
18. high-density recordable CD as claimed in claim 2, wherein this reflecting layer be gold and silver, aluminium, silicon, copper, silver-colored titanium alloy, silver-colored Chrome metal powder, yellow gold and arbitrary combination thereof alloy one of them.
19. high-density recordable CD as claimed in claim 2, wherein the laminating type of this laminating layer be method of spin coating, wire mark, hot melt adhesive method, double sticky tape applying method one of them.
20. high-density recordable CD as claimed in claim 2, wherein the thickness in this reflecting layer is 50 nanometer to 200 nanometers.
21. high-density recordable CD as claimed in claim 2 wherein more comprises overlapping plurality of records layer and a plurality of reflecting layer to form a multi-layered high-density recordable CD.
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|---|---|---|---|
| CN 02122033 CN1211364C (en) | 2002-05-28 | 2002-05-28 | New type salt compound of indole stryrene and application in high density recording media |
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|---|---|---|---|
| CN 02122033 CN1211364C (en) | 2002-05-28 | 2002-05-28 | New type salt compound of indole stryrene and application in high density recording media |
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| CN103113282A (en) * | 2013-01-22 | 2013-05-22 | 天津理工大学 | Preparation method for electrondrawing group containing semi-cyanine temperature-sensitive molecular optical probe |
-
2002
- 2002-05-28 CN CN 02122033 patent/CN1211364C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410241C (en) * | 2003-11-13 | 2008-08-13 | 财团法人工业技术研究院 | Indolyl styrene salt compound, high density recording medium including said compound and its preparing method |
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