CN1259660C - Optical disk substrate - Google Patents
Optical disk substrate Download PDFInfo
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- CN1259660C CN1259660C CNB028111095A CN02811109A CN1259660C CN 1259660 C CN1259660 C CN 1259660C CN B028111095 A CNB028111095 A CN B028111095A CN 02811109 A CN02811109 A CN 02811109A CN 1259660 C CN1259660 C CN 1259660C
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- base board
- optic disc
- disc base
- rubber
- methyl
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2536—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polystyrene [PS]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L35/06—Copolymers with vinyl aromatic monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
Abstract
An optical disk substrate which comprises at least one styrenic resin (X) selected from the group consisting of (A) a specific styrene-acrylonitrile copolymer resin, (B) a specific styrene-(meth)acrylate ester copolymer and (C) a specific rubber-modified styrenic resin composition. The optical disk substrate is excellent in strength, formability, releasability and transferability, and also can be produced at a reduced cost with ease.
Description
Technical field
The good optic disc base board of flexural deformation after the present invention relates to release property and being shaped.
Background technology
Along with the development of informationized society, the carrier on the market also from before tape, disk developed into the higher CD of integrated level.
Want widespread use just must reduce price, realized the raising of cheapization and the throughput rate of material for this reason.
Here said CD is that LD (videodisc), VCD (CD-Video), music CD, CD-ROM, CD-R, DVD-ROM, DVD-RAM, DVD-R etc. are read by variation by laser and have or not dimpled grain the digitized signal of sound, image etc. to be stored in the storage medium of the information of plastic base face.
The mode that the generation type of dimpled grain has the mechanical system that adopts pressing mold and utilize the effect of light to make the organic pigment that preexists in card to react, but to there is no particular limitation.
In the past, the aromatic ethylene that with the polystyrene resin is representative was that resin is because its easy formability is applied to various fields.In person in electronics, because it requires height, having taked to add plastifier and having improved aromatic ethylene is the measures such as molecular weight of resin.For example, the Jap.P. spy opens the specific mineral oil of interpolation described in clear 59-140207 number, is improved to some extent though confirmed flowability, and is still insufficient, the problem that has formability, but also can produce the problem that the physical strength that causes formed products and thermotolerance reduce.Announced a kind of composition of styrene resin at Japanese patent laid-open 3-33142 number, it can keep improve flowability, but release property and replicability being insufficient under physical strength and the stable on heating situation.
This technology also has problems, and promptly need higher manufacturing technology and higher cost owing to obtain this styrene resin composite, so cost can increase greatly.Studied in addition polystyrene as the technology of optic disc base board with material, but there is following problems, in forming process, because impact strength diminishes, formed products easy fracture during molding, and because poor heat resistance, therefore will obtain unbending formed products must prolong cool time, thereby make forming period elongated, cause throughput rate low, and replicability is poor.
The announcement of invention
The present inventor has carried out various researchs in order to address the above problem, and the result has obtained new discovery, and promptly the optic disc base board that is made of specific phenylethylene resin series (X) can improve intensity, thermotolerance and replicability, and has finally finished the present invention thus.
That is, the present invention has following formation,
(1) optic disc base board is made of phenylethylene resin series (X), and the feature of this substrate is that this phenylethylene resin series (X) is for being selected from following (A), (B) and at least a kind of phenylethylene resin series (C):
(A) styrene-acrylonitrile resin,
(B) styrene-(methyl) acrylate based copolymer, its styrenic monomers, (methyl) acrylic ester monomer reach can forming with the vinyl monomer copolymerization of these monomer copolymerizations of adding as required,
(C) rubber-modified styrene resin composition, its major component is styrene-(methyl) acrylate based copolymer and graft copolymer, styrene-(methyl) acrylate based copolymer is a styrenic monomers, (methyl) acrylic ester monomer reaches can forming with the vinyl monomer copolymerization of these monomer copolymerizations of adding as required, graft copolymer is in the presence of the diene rubber-like elastic body, by styrenic monomers, (methyl) acrylic ester monomer reaches can forming with the vinyl monomer copolymerization of these monomer copolymerizations of adding as required, and the weight-average molecular weight (Mw) of the component that dissolves in THF (tetrahydrofuran) in the said composition is 50,000～100,000, rubber mass is 2～20%, and rubber size is 0.1～0.5 μ m.
(2) further limit (1) described optic disc base board, the feature of this substrate is, phenylethylene resin series (A) satisfies MFR (the melt flow rate) 〉=1.0g/10 branch under 200 ℃, 5kg load, and the VSP under 5kg load (Vicat softening point) 〉=105 ℃ condition.
(3) further limit (1) described optic disc base board, the feature of this substrate is, phenylethylene resin series (B) satisfies the MFR 〉=1.0g/10 branch under 200 ℃, 5kg load, and the condition of the VSP under 5kg load 〉=95 ℃.
(4) further limit (1) described optic disc base board, the feature of this substrate is, phenylethylene resin series (C) satisfies the MFR 〉=2.0g/10 branch under 200 ℃, 5kg load, and the condition of the VSP under 5kg load 〉=90 ℃.
(5) further limit (1) or (4) described optic disc base board, the feature of this substrate is that the refractive index of the styrene in the phenylethylene resin series (C)-(methyl) acrylate based copolymer and graft copolymer is approximate.
(6) further limit (1), (4) or (5) described optic disc base board, the feature of this substrate is, phenylethylene resin series (C) but in the vinyl monomer of copolymerization be vinyl cyanide.
(7) further limit each described optic disc base board in (1)～(6), the feature of this substrate is, at the lubricant that is selected from mixing 10～200ppm in (A), (B) and at least a kind of phenylethylene resin series (X) (C) of 100 mass parts and form.
(8) further limit (7) described optic disc base board, the feature of this substrate is that lubricant is to be selected from more than at least a kind of fatty acid, fatty acid metal salts and fatty acid amide.
(9) further limit each described optic disc base board in (1)～(8), the feature of this substrate is that optic disc base board is used for VCD or CD-ROM.
The best mode that carries out an invention
Below, describe the present invention in detail.
Phenylethylene resin series (A)
The used styrenic monomers of styrene-acrylonitrile resin comprises aromatic vinyl monomer and substituents thereof such as styrene, α-Jia Jibenyixi, t-butyl styrene, chlorostyrene, o-methyl styrene, a methyl styrene, p-methylstyrene, and wherein the styrene effect is good especially.
The acrylic monomer comprises vinyl cyanide monomers such as vinyl cyanide, methacrylonitrile, α-Lv Daibingxijing, and wherein the vinyl cyanide effect is good especially.
In the styrene-acrylonitrile resin, can use as required can with the vinyl monomer of above-mentioned monomer copolymerization, this vinyl monomer comprises (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) cyclohexyl acrylate, (methyl) decyl acrylate, (methyl) acrylic acid stearyl, (methyl) hydroxy-ethyl acrylate, (methyl) acrylic acid methoxyl ethyl ester, (methyl) glycidyl acrylate etc., they promptly can use separately, also can and use.In the present invention, (methyl) methyl acrylate is represented methyl acrylate or methyl methacrylate.
There is no particular limitation to the manufacture method of styrene-acrylonitrile resin, for example can adopt polymerizations such as emulsion polymerization method, suspension polymerization, mass polymerization, solution polymerization process.
The characteristic of the phenylethylene resin series (A) that the present invention is used preferably satisfies the MFR 〉=1.0g/10 branch under 200 ℃, 5kg load, and the condition of the VSP under 5kg load 〉=105 ℃.
Phenylethylene resin series (B)
Styrenic monomers in styrene-(methyl) acrylate based copolymer comprises styrene, α-Jia Jibenyixi, p-methylstyrene, o-methyl styrene, a methyl styrene, ethyl styrene, to t-butyl styrene etc., be preferably styrene.These styrenic monomers promptly can be used separately, also can more than 2 kinds and use.
(methyl) acrylic ester monomer comprises methacrylates such as (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) 2-EHA, acrylate such as methyl acrylate, ethyl acrylate, n-butyl acrylate, the own ester of acrylic acid 2-methyl, 2-EHA, decyl acrylate, be preferably (methyl) methyl acrylate or n-butyl acrylate, what effect was good especially is (methyl) methyl acrylate.These (methyl) acrylic ester monomers both may be used alone, two or more kinds can also be used.
Also have, that uses as required can comprise acrylic acid, methacrylic acid, vinyl cyanide, methacrylonitrile, N-phenylmaleimide, N-cyclohexyl maleimide etc. with the vinyl monomer of these monomer copolymerizations.
There is no particular limitation to the manufacture method of styrene-(methyl) acrylate based copolymer, for example can adopt polymerizations such as emulsion polymerization method, suspension polymerization, mass polymerization, solution polymerization process.
The characteristic of the phenylethylene resin series (B) that the present invention is used preferably satisfies the MFR 〉=1.0g/10 branch under 200 ℃, 5kg load, and the condition of the VSP under 5kg load 〉=95 ℃.
Phenylethylene resin series (C)
The styrene of one of major component of rubber-modified styrene resin composition-(methyl) acrylate based copolymer is that styrenic monomers, (methyl) acrylic ester monomer reach the multipolymer that can form with the vinyl monomer copolymerization of these monomer copolymerizations that adds as required.
The graft copolymer of one of major component of rubber-modified styrene resin composition of the present invention is in the presence of the diene rubber-like elastic body, reaches the graft copolymer that can form with the vinyl monomer copolymerization of these monomer copolymerizations that adds as required by styrenic monomers, (methyl) acrylic ester monomer.
The used styrenic monomers of the present invention comprises styrene, α-Jia Jibenyixi, p-methylstyrene, o-methyl styrene, a methyl styrene, ethyl styrene, to t-butyl styrene etc., be preferably styrene.These styrenic monomers promptly can be used separately, also can more than 2 kinds and use.
Used (methyl) acrylic ester monomer of the present invention comprises methacrylates such as (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) 2-ethylhexyl acrylate, acrylate such as methyl acrylate, ethyl acrylate, n-butyl acrylate, the own ester of acrylic acid 2-methyl, 2-EHA, decyl acrylate, effect is preferably (methyl) methyl acrylate or n-butyl acrylate, and what effect was good especially is (methyl) methyl acrylate.These (methyl) acrylic ester monomers both may be used alone, two or more kinds can also be used.
Also have, that uses as required can comprise acrylic acid, methacrylic acid, vinyl cyanide, methacrylonitrile, N-phenylmaleimide, N-cyclohexyl maleimide etc. with the vinyl monomer of these monomer copolymerizations.
The used diene rubber-like elastic body of the present invention comprises polybutadiene, styrene-butadiene block copolymer and styrene butadiene random copolymer etc.
Also have, the refractive index of the styrene in the rubber-modified styrene resin composition of the present invention-(methyl) acrylate based copolymer and graft copolymer is approaching, its difference better is below 0.05, and good especially is below 0.002, helps obtaining good transparency like this.
Have again, there is no particular limitation to the ratio of each monomer of constituting styrene-(methyl) acrylate based copolymer, reasonable is styrenic monomers unit 20～70 quality %, (methyl) acrylic ester monomeric unit 30～80 quality %, use as required can with vinyl monomer unit 0～10 quality % of these monomer copolymerizations.Monomer is than in above-mentioned scope, and closely then better with the differential of the refractive index of graft copolymer.
Also have, there is no particular limitation to the amount of each monomer of the dience rubber shape elastic body that constitutes graft copolymer and styrene-(methyl) acrylate based copolymer, but it would be desirable, graft copolymer is formed by styrene-(methyl) acrylate based copolymer 20～70 mass parts and 30～80 mass parts grafting of dience rubber shape elastic body, above-mentioned styrene-(methyl) acrylate based copolymer is by styrenic monomers unit 20～70 quality %, (methyl) acrylic ester monomeric unit 30～80 quality reach can constituting with vinyl monomer unit 0～10 quality % of these monomer copolymerizations of using as required, monomer is than in above-mentioned scope, and it is closely then better to carry out the differential of refractive index of styrene-(methyl) the acrylate based copolymer of grafting and rubber-like elastic body.
The manufacturing of rubber-modified styrene resin composition of the present invention can be adopted technique known such as mass polymerization, solution polymerization process, suspension polymerization and body-suspension polymerization, emulsion polymerization method.Can also adopt intermittence type polymerization method or continous way polymerization.
Effect is reasonable to be, the resin that contains graft copolymer adopts the emulsion polymerization manufactured, styrene-(methyl) acrylic ester resin adopts any polymerization in mass polymerization, solution polymerization process, suspension polymerization and the body-suspension polymerization to make, this resin and this styrene-(methyl) acrylic ester resin melting mixing that contains graft copolymer is made rubber-modified styrene resin composition, and the resistance to impact of the resin combination that obtains like this and transparency are good especially.
The component of the said THF of dissolving in of the present invention (tetrahydrofuran) also comprises the every other composition that dissolves in THF except that styrene-(methyl) acrylate based copolymer that comprises as principal ingredient.The component that is insoluble to THF is removed the graft copolymerization beyond the region of objective existence that comprises as principal ingredient, also comprises the every other composition that is insoluble to THF.
The weight-average molecular weight (Mw) of the component that dissolves in THF (tetrahydrofuran) in the used rubber-modified styrene resin composition of the present invention is preferably 50,000～100,000.If less than 50,000, then impact strength is poor, if surpass 100,000, then forming period is long.Here said weight-average molecular weight is to adopt gel permeation chromatography (GPC) method to measure component that dissolves in THF in the rubber-modified styrene resin composition and the weight-average molecular weight that obtains through polystyrene conversion.
Also has the rubber mass of rubber-modified styrene resin composition preferably 2～20%.If less than 2% then impact strength is poor, if surpass 20% then forming period is long, replicability is variation also.And the rubber size of this rubber-modified styrene resin composition is preferably 0.1～0.5 μ m.If less than 0.1 μ m then impact strength is poor, then replicability is poor to surpass 0.5 μ m.
The characteristic of phenylethylene resin series used in the present invention (C) preferably satisfies the MFR 〉=2.0g/10 branch under 200 ℃, 5kg load, and the condition of the VSP under 5kg load 〉=90 ℃.
Under the prerequisite of the performance of not damaging rubber-modified styrene resin composition of the present invention, can in rubber-modified styrene resin composition of the present invention, mix known weather resisting agent, lubricant, plastifier, colorant, anti-live agent, mineral wet goods adjuvant.
There is no particular limitation to the method for the mixed melting of rubber-modified styrene resin composition of the present invention extruding, can adopt known method.For example, in advance various raw materials are mixed with barrel mixer and stirrer etc., send into the method for making particle behind single shaft extruder or the two-axis extruder melting mixing.
The thermoplastic resin composition of the present invention who obtains like this can adopt methods such as injection moulding, compression molding or extrusion molding to be processed into various formed bodies, for practicality.
Best hybrid lubricant in the used phenylethylene resin series of the present invention (X).The combined amount of lubricant is preferably 10～200ppm corresponding to the phenylethylene resin series (X) of 100 mass parts.If less than 10ppm, the easy fracture during demoulding then, if surpass 200ppm, then transparency reduces, poor effect.Here, phenylethylene resin series (X) is for being selected from phenylethylene resin series (A), phenylethylene resin series (B) or phenylethylene resin series (C) a kind.
The kind of the lubricant that the present invention is used has fatty acid, fatty acid metal salts and fatty acid amide etc.Fatty acid has stearic acid, behenic acid, erucic acid etc.Fatty acid amide has the hard esteramides of ethylenebis etc.Fatty acid metal salts has zinc stearate (St-Zn), dolomol (St-Mg), calcium stearate (St-Zn) etc., and what effect was good especially is zinc stearate.
Below, by embodiment particular content of the present invention is further described, but the present invention is not limited to following embodiment.Also have, used in an embodiment [part] and [%] are that benchmark is represented with the quality.
Evaluation method
1) MFR. is according to JIS K-6874, measures under 200 ℃, the condition of 5kg load.
2) VSP:, under the condition of 5kg load, measure according to JIS K-7206.
3) rigidity: in forming process, can the not rupture bending strength of yardstick of required rigidity of formed products is (with reference to ASTM D790) more than the 100MPa during as the demoulding.
4) formability: forming period below 6 seconds is being the productivity excellent material.
5) release property: make the frequency injection of formed products before cracking because of molding is bad, injection more than 100 times is the release property excellent material.
6) replicability: the depth of groove when adopting groove 160nm to be shaped with mould is the replicability excellent material more than 100nm.
7) intensity of dropping hammer: steel hammer (JIS M7608) used when drop-weight test adopts the security cap test is measured.
The embodiment of phenylethylene resin series (A)
Embodiment 1
In the reactor of stirring machine is housed, add 250 parts in 70 parts of styrene, 30 parts of vinyl cyanide, 2.5 parts in calcium phosphate, 0.5 part of uncle's dodecyl mercaptans, 0.2 part of benzoyl peroxide and water, be warming up to 100 ℃ and begin to carry out polymerization.Polymerization begins after 7 hours temperature to be risen to 120 ℃, keeps finishing in 3 hours polymerization.Aggregate rate has reached 97%.Reactant liquor with the hydrochloric acid neutralization obtains after dehydrating, obtains white bead-like copolymer.1. it be decided to be copolymer A S.
In this multipolymer, add the St-Zn 50ppm that is blended in as lubricant, with the single shaft extruder of screw diameter 40mm after forming particle under the condition of 220 ℃ of barrel temperatures, screw rod revolution 100rpm, with injection machine (name machine a society system MDM-I) injection moulding under the condition of 250 ℃ of forming temperatures, 60 ℃ of metal pattern temperature, obtained the optic disc base board of diameter 180mm, center pit 15mm, thick 1.2mm thus.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 2
In the reactor of stirring machine is housed, add 250 parts in 70 parts of styrene, 30 parts of vinyl cyanide, 2.5 parts in calcium phosphate, 0.2 part of uncle's dodecyl mercaptans, 0.2 part of benzoyl peroxide and water, be warming up to 100 ℃ and begin to carry out polymerization.Polymerization begins after 7 hours temperature to be risen to 120 ℃, keeps finishing in 3 hours polymerization.Aggregate rate has reached 97%.Reactant liquor with the hydrochloric acid neutralization obtains after dehydrating, has obtained white bead-like copolymer.2. it be decided to be copolymer A S.
In this multipolymer, add the St-Zn 50ppm that mixes as lubricant, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 3
In the reactor of stirring machine is housed, add 250 parts in 80 parts of styrene, 20 parts of vinyl cyanide, 2.5 parts in calcium phosphate, 0.5 part of uncle's dodecyl mercaptans, 0.2 part of benzoyl peroxide and water, be warming up to 100 ℃ and begin to carry out polymerization.Polymerization begins after 7 hours temperature to be risen to 120 ℃, keeps finishing in 3 hours polymerization.Aggregate rate has reached 97%.Reactant liquor with the hydrochloric acid neutralization obtains after dehydrating, has obtained white bead-like copolymer.3. it be decided to be copolymer A S.
In this multipolymer, add the St-Zn 50ppm that mixes as lubricant, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 4
1. do not add lubricant at copolymer A S that embodiment 1 obtains in, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 5
1. add the St-Zn250ppm that mixes as lubricant at copolymer A S that embodiment 1 obtains in, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 6
1. add the EBP50ppm that mixes as lubricant at copolymer A S that embodiment 1 obtains in, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 7
1. add the St-Mg50ppm that mixes as lubricant at copolymer A S that embodiment 1 obtains in, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 8
1. add the St-Ca50ppm that mixes as lubricant at copolymer A S that embodiment 1 obtains in, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Embodiment 9
Add in 1. at copolymer A S that embodiment 1 obtains and to mix stearic acid 150ppm, identical with embodiment 1, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Comparative example 1
In the reactor of stirring machine is housed, add 250 parts in 100 parts of styrene, 2.5 parts in calcium phosphate, 0.5 part of uncle's dodecyl mercaptans, 0.2 part of benzoyl peroxide and water, be warming up to 100 ℃ and begin to carry out polymerization.Polymerization begins after 7 hours temperature to be risen to 120 ℃, keeps finishing in 3 hours polymerization.Aggregate rate has reached 97%.Reactant liquor with the hydrochloric acid neutralization obtains after dehydrating, has obtained white bead-like copolymer.1. it be decided to be copolymer p S.
In this multipolymer, add St-Zn 50ppm, obtained optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 1.
Table 1
| Experiment No | Resin | MFR (g/10 branch) | VSP (℃) | Lubricant | Evaluating characteristics | Remarks | |||
| Rigidity (MPa) | Formability (second) | Release property (frequency injection) | Replicability (depth of groove nm) | ||||||
| 1 2 3 4 5 6 7 8 9 | AS① AS② AS③ AS① AS① AS① AS① AS① AS① | 2.1 0.5 2.1 2.1 2.1 2.1 2.1 2.1 2.1 | 108 108 103 108 108 108 108 108 108 | St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm does not have St-Zn 250ppm EBP 50ppm St-Mg 50ppm St-Ca 50ppm stearic acid 150ppm | 125 123 110 125 125 125 125 125 125 | 5.0 5.5 5.0 5.0 5.0 5.0 5.0 5.0 5.0 | 200 200 200 150 400 200 200 200 300 | 150 150 150 150 150 150 150 150 150 | Embodiment 1 embodiment 2 embodiment 3 embodiment 4 embodiment 5 embodiment 6 embodiment 7 embodiment 8 embodiment 9 |
| 10 | PS① | 2.2 | 98 | St-Zn 50ppm | 95 | 7.2 | 85 | 90 | Comparative example 1 |
Annotate: replicability be evaluated as depth of groove 〉=100nm: zero, depth of groove＜100nm: *
As shown in Table 1, the optic disc base board of experiment No.1～9 has characteristics such as good rigidity, formability, release property and replicability, but the characteristic of the optic disc base board of experiment No.10 is poor.
The embodiment of phenylethylene resin series (B)
Embodiment 10
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 40kg, methyl methacrylate 60kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 200g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 100 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained bead-like copolymer.1. it be decided to be multipolymer MS.
In this multipolymer, add to mix St-Zn 50ppm, under the condition of 220 ℃ of barrel temperatures, screw rod revolution 100rpm, form particle with the single shaft extruder of screw diameter 40mm as lubricant.Then, with injection machine (name machine a society system MDM-I) injection moulding under the condition of 240 ℃ of forming temperatures, 60 ℃ of metal pattern temperature, obtained the optic disc base board of diameter 180mm, center pit 15mm, thick 1.2mm thus.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 11
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 40kg, methyl methacrylate 60kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 100g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 100 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained bead-like copolymer.2. it be decided to be multipolymer MS.
In this multipolymer, add the St-Zn 50ppm that mixes as lubricant, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 12
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 60kg, methyl methacrylate 40kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 200g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 100 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained bead-like copolymer.3. it be decided to be multipolymer MS.
In this multipolymer, add the St-Zn 50ppm that mixes as lubricant, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 13
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 25kg, methyl methacrylate 70kg and vinyl cyanide 5kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 200g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 100 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained bead-like copolymer.4. it be decided to be multipolymer MS.
In this multipolymer, add the St-Zn 50ppm that mixes as lubricant, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 14
1. do not add lubricant at multipolymer MS that embodiment 10 obtains in, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 15
Add in 1. at multipolymer MS that embodiment 10 obtains and to mix as lubricant St-Zn250ppm, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 16
Add in 1. at multipolymer MS that embodiment 10 obtains and to mix as lubricant St-Mg50ppm, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 17
Add in 1. at multipolymer MS that embodiment 10 obtains and to mix as lubricant St-Ca50ppm, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 18
Add in 1. at multipolymer MS that embodiment 10 obtains and to mix as lubricant EBP50ppm, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Embodiment 19
1. add the stearic acid 150ppm that mixes as lubricant at multipolymer MS that embodiment 10 obtains in, identical with embodiment 10, carry out injection moulding with particle, obtained optic disc base board.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 2.
Table 2
| Experiment No | Resin | MFR (g/10 branch) | VSP (℃) | Lubricant | Evaluating characteristics | Remarks | |||
| Rigidity (MPa) | Formability (second) | Release property (frequency injection) | Replicability (depth of groove nm) | ||||||
| 11 12 13 14 15 16 17 18 19 20 | MS① MS② MS③ MS④ MS① MS① MS① MS① MS① MS① | 2.1 0.6 2.2 2.3 2.1 2.3 2.1 2.2 2.1 2.2 | 102 102 99 103 102 102 102 102 102 102 | St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm does not have St-Zn 250ppm St-Mg 50ppm St-Ca 50ppm EBP 50ppm stearic acid 150ppm | 112 115 110 115 112 113 112 113 112 112 | 5.1 5.6 5.8 5.1 5.1 5.1 5.2 5.1 5.1 5.1 | 200 200 200 200 150 400 200 200 200 200 | 150 150 150 150 150 150 150 150 150 150 | Embodiment 10 embodiment 11 embodiment 12 embodiment 13 embodiment 14 embodiment 15 embodiment 16 embodiment 17 embodiment 18 embodiment 19 |
| 10 | PS① | 2.2 | 98 | St-Zn 50ppm | 95 | 7.2 | 85 | 90 | Comparative example 1 |
Annotate: replicability be evaluated as depth of groove 〉=100nm: zero, depth of groove＜100nm: *
As shown in Table 2, the optic disc base board of experiment No.11～20 has characteristics such as good rigidity, formability, release property and replicability, but the characteristic of the optic disc base board of experiment No.10 is poor.
The embodiment of phenylethylene resin series (C)
(1) manufacturing of styrene-(methyl) acrylic ester resin
Reference example 1: styrene-(methyl) acrylic ester resin (A-1)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 24kg, methyl methacrylate 76kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 800g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-1).
Reference example 2: styrene-(methyl) acrylic ester resin (A-2)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 24kg, methyl methacrylate 76kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 600g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-2).
Reference example 3: styrene-(methyl) acrylic ester resin (A-3)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 24kg, methyl methacrylate 76kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 700g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-3).
Reference example 4: styrene-(methyl) acrylic ester resin (A-4)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, but styrene 24 g, methyl methacrylate 76kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 950g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-4).
Reference example 5: styrene-(methyl) acrylic ester resin (A-5)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 24kg, methyl methacrylate 76kg, add t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 450g again, mixed liquor is disperseed as polymerization initiator.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-5).
Reference example 6: styrene-(methyl) acrylic ester resin (A-6)
In the autoclave of 250 liters of capacity, add pure water 100kg, neopelex 0.5g, calcium phosphate 250g, styrene 23kg, methyl methacrylate 73kg, vinyl cyanide 4kg adds t-butyl peroxy-isobutylate 100g and uncle's dodecyl mercaptans 700g as polymerization initiator again, and mixed liquor is disperseed.This mixed liquor of 90 ℃ of heated polymerizables of temperature 8 hours, this mixed liquor of 130 ℃ of heated polymerizables of temperature 2.5 hours.After reaction finished, washing, dehydration and dry had obtained pearl styrene-(methyl) acrylic ester resin (A-6).
(2) manufacturing of rubber-like elastic body latex
Reference example 7: rubber-like elastic body latex (G-1)
In the autoclave of 200 liters of volumes, add pure water 60kg, potassium oleate 400g, roseolic acid potassium 1200g, sodium carbonate 1.2kg, potassium persulfate 400g, under agitation uniform dissolution.Then, add butadiene 80kg, uncle's dodecyl mercaptans 400g 60 ℃ of polyase 13s 0 hour, is warming up to 70 ℃ while stirring then, places and finishes polymerization in 20 hours, has obtained the rubber-like elastic body latex (G-1) of mean grain size 0.3 μ m.
Reference example 8: rubber-like elastic body latex (G-2)
In the autoclave of 200 liters of volumes, add pure water 115kg, potassium oleate 500g, sodium pyrophosphate 75g, ferrous sulphate 1.5g, sodium ethylene diamine tetracetate 2.2g and carving are from powder 22g, under agitation uniform dissolution.Then, add butadiene 50kg, uncle's dodecyl mercaptans 148g, divinylbenzene 30g and di-isopropylbenzene hydroperoxide 96g reacted 16 hours at 50 ℃ while stirring, finished polymerization, had obtained rubber-like latex.In the rubber-like polymer latex that obtains, add sodium sulfosuccinate 45g, after treating fully to stablize, add 0.2% aqueous hydrochloric acid solution and 2% sodium hydroxide aqueous solution from different material injection nozzles, the pH value of latex is remained on 8～9, make the latex agglutination hypertrophy, obtained the rubber-like elastic body latex (G-2) of mean grain size 0.4 μ m.
Reference example 9: rubber-like elastic body latex (G-3)
Change the condition of the aggegation hypertrophy of reference example 8, except that mean grain size was 0.6 μ m, other operations were all identical with manufacturing rubber-like elastic body latex (G-2), made rubber-like elastic body latex (G-3).
Reference example 10: rubber-like elastic body latex (G-4)
In the autoclave of 200 liters of volumes, add pure water 85kg, potassium oleate 1200g, potassium hydroxide 200g and potassium persulfate 50g, under agitation uniform dissolution.Then, add butadiene 50kg and uncle's dodecyl mercaptans 100g, reacted 16 hours at 50 ℃ while stirring, finish polymerization, obtained the rubber-like elastic body latex (G-4) of mean grain size 0.08 μ m.
Contain the manufacturing of the resin of graft copolymer
Reference example 11: the resin (B-1) that contains graft copolymer
With rubber elastomer latex (G-1) 30kg of solid constituent conversion weighing reference example 7, in the autoclave with its 200 liters of volume of packing into, add pure water 80kg again, flow down at nitrogen while stirring and be warming up to 50 ℃.Then, add ferrous sulphate 1.25g therein, sodium ethylene diamine tetracetate 2.5g and be dissolved with the pure water 2kg of rongalite 100g, add the potpourri of forming by styrene 7.2Kg, methyl methacrylate 22.8Kg and uncle's dodecyl mercaptans 60g continuously with time of 6 hours respectively, and di-isopropylbenzene hydroperoxide 120g is scattered among the pure water 8kg that contains potassium oleate 450g and the solution of formation.After interpolation finishes, be warming up to 70 ℃, add di-isopropylbenzene hydroperoxide 30g again, place and finished polymerization in 2 hours.
In the emulsion that obtains, add antioxidant, be warming up to 60 ℃ after with pure water solid constituent being diluted to 15%, limit adding dilute sulfuric acid is stirred on the limit fast and magnesium sulphate is saltoutd, then, being warming up to 90 ℃ solidifies it, then dehydration, washing and dry obtain pulverous resin (B-1) that contains graft copolymer.
Reference example 12: the resin (B-2) that contains graft copolymer
Except that the rubber-like elastic body latex in the reference example 11 being changed into the rubber-like elastic body latex (G-2) of reference example 8, other operations are identical with the resin (B-1) that manufacturing contains graft copolymer, made pulverous resin (B-2) that contains graft copolymer.
Reference example 13: the resin (B-3) that contains graft copolymer
Except that the rubber-like elastic body latex in the reference example 11 being changed into the rubber-like elastic body latex (G-3) of reference example 9, other operations are identical with the resin (B-1) that manufacturing contains graft copolymer, made pulverous resin (B-3) that contains graft copolymer.
Reference example 14: the resin (B-4) that contains graft copolymer
Except that the rubber-like elastic body latex in the reference example 11 being changed into the rubber-like elastic body latex (G-4) of reference example 10, other operations are identical with the resin (B-1) that manufacturing contains graft copolymer, made pulverous resin (B-4) that contains graft copolymer.
Embodiment 20
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 1 is made-(methyl) acrylic ester resin (A-1) have obtained resin combination.It is decided to be rubber modified resin composition (1).
In this rubber modified resin composition, add St-Zn 50ppm, under the condition of 250 ℃ of forming temperatures, carry out injection moulding, obtain optic disc base board by injection moulding with the system injection machine MDM-I of name machine society as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 21
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 1 is made-(methyl) acrylic ester resin (A-2) have obtained resin combination.It is decided to be rubber modified resin composition (2).
In this rubber modified resin composition (2), add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 22
8 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 92 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (3).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 23
36 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 64 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (4).
In this rubber modified resin composition (4), add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 24
20 parts of the resins that contains graft copolymer (B-2) that hybrid reference example 12 is made in 80 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (5).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 25
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (6).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 26
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 6 is made-(methyl) acrylic ester resin (A-6) have obtained resin combination.It is decided to be rubber modified resin composition (7).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 27
In the rubber modified resin composition (6) that embodiment 25 obtains, add hard ester acid 250ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 28
In the rubber modified resin composition (6) that embodiment 25 obtains, add EBP 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 29
In the rubber modified resin composition (6) that embodiment 25 obtains, add hard ester acid 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 3.
Embodiment 30
In the rubber modified resin composition (6) that embodiment 25 obtains, add St-Mg 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out the characteristic valency of exposing sb.'s past misdeeds, it the results are shown in Table 4.
Embodiment 31
In the rubber modified resin composition (6) that embodiment 25 obtains, add St-Ca 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Embodiment 32
In the rubber modified resin composition (6) that embodiment 25 obtains, do not add lubricant, obtain optic disc base board by injection moulding.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 2
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 4 is made-(methyl) acrylic ester resin (A-4) have obtained resin combination.It is decided to be rubber modified resin composition (8).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 3
20 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 80 parts of styrene that reference example 5 is made-(methyl) acrylic ester resin (A-5) have obtained resin combination.It is decided to be rubber modified resin composition (9).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 4
2 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 98 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (10).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 5
44 parts of the resins that contains graft copolymer (B-1) that hybrid reference example 11 is made in 56 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (11).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 6
20 parts of the resins that contains graft copolymer (B-3) that hybrid reference example 13 is made in 80 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (12).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Comparative example 7
20 parts of the resins that contains graft copolymer (B-4) that hybrid reference example 14 is made in 80 parts of styrene that reference example 3 is made-(methyl) acrylic ester resin (A-3) have obtained resin combination.It is decided to be rubber modified resin composition (13).
In this rubber modified resin composition, add St-Zn 50ppm, obtain optic disc base board by injection moulding as lubricant.Then, the optic disc base board that obtains is carried out evaluating characteristics, it the results are shown in Table 4.
Table 3
| Experiment No | Resin | MFR (g/10 branch) | VSP (℃) | Lubricant | Evaluating characteristics | Remarks | ||||||
| Molecular weight (MW) | Rubber mass (%) | Rubber size (μ m) | The intensity of dropping hammer (gfcm) | Formability (second) | Release property (frequency injection) | Replicability (depth of groove nm) | ||||||
| 21 22 23 24 25 26 27 28 29 30 | Resin (1) resin (2) resin (3) resin (4) resin (5) resin (6) resin (7) resin (6) resin (6) resin (6) | 60,000 988888888 ten thousand | 10 10 4 18 10 10 10 10 10 10 | 0.3 0.3 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 | 5 3 8 2.5 4 4 4 4.2 4 4 | 90 90 95 80 90 90 90 89 90 90 | St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm stearic acid 250ppm EBP 50ppm stearic acid 50ppm | 2800 3200 2500 5000 3500 3000 3000 3000 3000 3000 | 4 4.8 3.5 6 4.5 4.5 4.5 4.5 4.5 4.5 | 200 200 200 200 200 200 200 400 200 200 | 150 150 150 150 150 150 150 150 150 150 | Embodiment 20 embodiment 21 embodiment 22 embodiment 23 embodiment 24 embodiment 25 embodiment 26 embodiment 27 embodiment 28 embodiment 29 |
Annotate: replicability be evaluated as depth of groove 〉=100nm: zero, depth of groove＜100nm: *
Table 4
| Experiment No | Resin | MFR (g/10 branch) | VSP (℃) | Lubricant | Evaluating characteristics | Remarks | ||||||
| Molecular weight (MW) | Rubber mass (%) | Rubber size (μ m) | The intensity of dropping hammer (gfcm) | Formability (second) | Release property (frequency injection) | Replicability (depth of groove nm) | ||||||
| 31 32 33 | Resin (6) resin (6) resin (6) | 80,000 88 ten thousand | 10 10 10 | 0.3 0.3 0.3 | 4 4 3.8 | 90 90 91 | St-Mg 50ppm St-Ca 50ppm does not have | 3000 3000 3000 | 4.5 4.5 4.5 | 200 200 150 | 150 150 150 | Embodiment 30 embodiment 31 embodiment 32 |
| 34 35 36 37 38 39 40 | Resin, (8) resin, (9) resin, (10) resin, (11) resin, (12) resin, (13) PS, (1) | 40,000 12 ten thousand 8888 ten thousand 22 ten thousand | 10 10 1 22 10 10 - | 0.3 0.3 0.3 0.3 0.08 0.6 - | 10 0.8 10 0.8 5 3 2.2 | 90 90 99 73 90 90 98 | St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm St-Zn 50ppm | 900 4000 800 5500 900 3800 500 | 3 10 3 10 4 4.8 7.2 | 180 220 150 200 200 200 85 | 150 150 150 100 150 90 90 | Comparative example 2 comparative examples 3 comparative examples 4 comparative examples 5 comparative examples 6 comparative examples 7 comparative examples 1 |
Annotate: replicability be evaluated as depth of groove 〉=100nm: zero, depth of groove＜100nm: *
By table 3, table 4 as can be known, the optic disc base board of experiment No.21～33 has characteristics such as good intensity, formability, release property and replicability.The characteristic of the optic disc base board of experiment No.34～40 is not good.
The possibility of utilizing on the industry
The intensity of optic disc base board of the present invention, formability, release property and replicability are good, and can obtain with lower manufacturing cost, at the industrial utmost point using value are arranged.
Claims (7)
1. optic disc base board is made of rubber-modified styrene resin composition (C),
The major component of described rubber-modified styrene resin composition (C) is cinnamic acrylic ester system or methacrylate ester multipolymer and graft copolymer,
Described cinnamic acrylic ester system or methacrylate ester multipolymer styrenic monomers, acrylic ester or methacrylate ester monomer reach can forming with the vinyl monomer copolymerization of these monomer copolymerizations of adding as required,
Described graft copolymer is in the presence of the diene rubber-like elastic body, reaches can forming with the vinyl monomer copolymerization of these monomer copolymerizations of adding as required by styrenic monomers, acrylic ester or methacrylate ester monomer,
The weight-average molecular weight of the component that dissolves in tetrahydrofuran in the said composition is 60,000～90,000, and rubber mass is 4～18%, and rubber size is 0.3～0.4 μ m.
2. optic disc base board as claimed in claim 1, its feature also be, phenylethylene resin series (C) satisfies the melt flow rate 〉=2.0g/10 branch under 200 ℃, 5kg load, and the condition of the Vicat softening point under 5kg load 〉=90 ℃.
3. optic disc base board as claimed in claim 1 or 2, its feature are that also the cinnamic acrylic ester system in the phenylethylene resin series (C) or the refractive index of methacrylate ester multipolymer and graft copolymer are approximate.
4. optic disc base board as claimed in claim 1, its feature also be, phenylethylene resin series (C) but in the vinyl monomer of copolymerization be vinyl cyanide.
5. optic disc base board as claimed in claim 1, its feature also are, mix the lubricant of 10～200ppm in the rubber-modified styrene resin composition (C) of 100 mass parts.
6. optic disc base board as claimed in claim 5, its feature are that also lubricant is to be selected from more than at least a kind of fatty acid, fatty acid metal salts and fatty acid amide.
7. optic disc base board as claimed in claim 1, its feature are that also optic disc base board is used for VCD or CD-ROM.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP167859/2001 | 2001-06-04 | ||
| JP2001167859 | 2001-06-04 | ||
| JP2001247151 | 2001-08-16 | ||
| JP247151/2001 | 2001-08-16 |
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| CN1259660C true CN1259660C (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB028111095A Expired - Fee Related CN1259660C (en) | 2001-06-04 | 2002-05-31 | Optical disk substrate |
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| JP (1) | JP4162591B2 (en) |
| KR (1) | KR20040020913A (en) |
| CN (1) | CN1259660C (en) |
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| KR100854388B1 (en) * | 2006-12-29 | 2008-08-26 | 제일모직주식회사 | Compact Disc Using Methylmethacrylate-Acrylonitrile-Butadiene-Styrene Copolymer Resin |
| KR20110115583A (en) * | 2009-01-16 | 2011-10-21 | 덴키 가가쿠 고교 가부시기가이샤 | Rubber-modified thermoplastic resin composition, injection molded article comprising the same, and washing machine lid using the same |
| CN116113662A (en) * | 2020-09-25 | 2023-05-12 | 电化株式会社 | Resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5888843A (en) * | 1981-11-19 | 1983-05-27 | Asahi Chem Ind Co Ltd | Optical high density information recording medium resin and optical high density information recording medium |
| JPS61163950A (en) * | 1985-01-16 | 1986-07-24 | Dainippon Ink & Chem Inc | Thermoplastic resin composition |
| JPS61246210A (en) * | 1985-04-25 | 1986-11-01 | Toray Ind Inc | Optical disk base |
| JPS63162707A (en) * | 1986-12-26 | 1988-07-06 | Mitsubishi Rayon Co Ltd | Optical material |
| JPH0826105B2 (en) * | 1989-11-22 | 1996-03-13 | 株式会社日本触媒 | Optical material having low specific gravity and excellent impact resistance, optical molded article using the optical material, and methods for producing the same |
| JPH05117330A (en) * | 1991-10-28 | 1993-05-14 | Sanyo Chem Ind Ltd | Styrene-acrylic resin and its production |
| JPH05179089A (en) * | 1991-12-26 | 1993-07-20 | Dainippon Ink & Chem Inc | Aromatic vinylic resin composition and production of its blow molded product |
| JP3672945B2 (en) * | 1994-05-23 | 2005-07-20 | 奇美実業股▲分▼有限公司 | Styrenic resin composition |
| JP3730694B2 (en) * | 1995-11-24 | 2006-01-05 | 旭化成ケミカルズ株式会社 | Dripping flame retardant styrene resin composition |
| JP4416190B2 (en) * | 1996-06-28 | 2010-02-17 | Ｄｉｃ株式会社 | Rubber-modified copolymer resin composition and process for producing the same |
-
2002
- 2002-05-31 WO PCT/JP2002/005344 patent/WO2002099799A1/en active Application Filing
- 2002-05-31 JP JP2003502828A patent/JP4162591B2/en not_active Expired - Fee Related
- 2002-05-31 CN CNB028111095A patent/CN1259660C/en not_active Expired - Fee Related
- 2002-05-31 KR KR10-2003-7015792A patent/KR20040020913A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040020913A (en) | 2004-03-09 |
| CN1513177A (en) | 2004-07-14 |
| JP4162591B2 (en) | 2008-10-08 |
| WO2002099799A1 (en) | 2002-12-12 |
| JPWO2002099799A1 (en) | 2004-09-24 |
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