JPH11277451A - Polishing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the polishing force while easily forming fine recessed and projecting parts by including the ultraviolet rays hardening resin at a specified weight percentage or more of the total quantity of the binder in the binder, and radiating the ultraviolet rays. SOLUTION: A polishing layer formed by distributing the polishing agent fine powder such as aluminum in the binder is provided on a flexible support formed of a polyester film. The binder of this polishing layer includes the ultraviolet rays hardening resin at 50 wt.% or more of the total of the binder, and the ultraviolet rays hardening resin is hardened by irradiation with the ultraviolet rays. Irradiation of the polishing layer formed on the support with the ultraviolet rays is performed over the whole surface, or performed with a pattern. As a pattern, a two-dimensional pattern or three-dimensional pattern of stripe, checkers, pyramid shape, conical shape is performed. At the time of partially hardening the polishing layer with the irradiation with the ultraviolet rays, a part, which is not hardened, is eliminated by melting, and fine recessed and projecting pattern of various shape is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing layer comprising an abrasive dispersed in a binder, provided on a flexible support, and comprising an end face of an optical connector ferrule, a hard disk substrate, a silicon wafer, a magnetic disk, and a magnetic tape. And a magnetic head (for audio, video, computer, and data recording), and a polishing body used for polishing of an MR magnetic head.

[0002]

2. Description of the Related Art Conventionally, the surface of a polishing layer in a general polishing body has been smooth, and the end face of an optical connector ferrule or the like as an object to be polished has been polished using the above polishing body and polishing slurry. However, a sufficient result is not necessarily obtained in terms of the amount of polishing at the end face, etc.

[0003] In addition, there is a type in which a polishing layer surface of a polishing body such as a polishing tape is shaped to form fine irregularities, and abrasion powder generated during polishing is collected in the concave portion. Free control of the shape was not easy.

[0004] As an example, Japanese Patent Application Laid-Open No. Hei 3-202281 discloses that after forming a polishing layer on a flexible support, the surface of the polishing layer is etched by irradiating the surface of the polishing layer with an ultraviolet ray such as an ultraviolet laser. Is disclosed.

[0005]

By the way, in a grindstone as a polishing tool, when polishing is performed, abrasive grains fall off, a new abrasive grain surface is exposed, clogging is eliminated, and polishing power is maintained. In a polishing body in which fine abrasive particles such as a polishing tape and a polishing sheet are dispersed and fixed with a resin binder, when clogging occurs, there is a problem that a polishing force is reduced and the polishing body cannot be used.

Accordingly, the present invention has been made in view of the above points, and is intended to provide a polishing body such as a polishing tape or a polishing sheet having a polishing support comprising a fine powder of an abrasive and a binder provided on a flexible support. An object of the present invention is to provide a polishing body capable of maintaining a polishing force.

[0007]

A polishing body according to the present invention which has solved the above-mentioned problems comprises a polishing layer comprising fine abrasive powder and a binder provided on a flexible support, wherein the binder is made of an ultraviolet curable resin. Containing 50% by weight or more of the total amount of the binder,
It is characterized by being irradiated with ultraviolet rays.

It is preferable that the surface of the polishing layer containing the binder made of the ultraviolet curing resin is irradiated with a pattern having a pattern by ultraviolet rays. At this time, it is preferable that the surface of the polishing layer other than the portion cured by the ultraviolet rays is removed so that, for example, a pyramid-shaped three-dimensional pattern is raised.

In the polishing body of the present invention, for example, when used in a wet state, the surface layer of the polishing layer is self-dissolved by an acid or an alkali solution, and a new polishing surface is supplied to maintain the polishing power. is there.

[0010]

According to the present invention as described above, since the binder of the polishing layer contains the ultraviolet curable resin in an amount of 50% by weight or more of the total amount of the binder, the surface properties are renewed in accordance with the polishing and the clogging is prevented. By the elimination, a favorable polishing force can be maintained.

Further, by partially curing by irradiation with ultraviolet rays, fine irregularities can be easily formed, the polishing power can be further improved, and the degree of freedom of the irregularities can be increased.
Production is also easy.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the polishing body of the present invention will be shown, and the present invention will be described in more detail.

The polishing body of the present invention comprises a flexible support made of a polyester film or the like and a polishing layer in which fine abrasive powder such as alumina is dispersed in a binder. The cured resin contains at least 50% by weight of the total amount of the binder, and is cured by ultraviolet irradiation.

[0014] Irradiation of ultraviolet rays to the polishing layer formed on the support is performed on the entire surface or in a patterned pattern. The pattern is formed in a planar or three-dimensional pattern such as a stepped pattern, a checkered pattern, a pyramid shape, a cone shape, or the like. When the polishing layer is partially cured by the irradiation of ultraviolet rays as described above, the uncured portions are removed by dissolution or the like, and fine irregular patterns having the above-described various shapes are formed.

The thickness of the support is 5 to 200 μm.
m, center line surface roughness Ra of the polishing layer surface is 0.002 to 10
It is preferably set to μm.

The ultraviolet (UV) curable prepolymer used as a binder for the polishing layer in the present invention has one to several acryloyl groups as functional groups, and undergoes a radical polymerization reaction with a photopolymerizable monomer or the like by ultraviolet rays to be crosslinked and polymerized. Things. The prepolymer includes polyester acrylate, polyurethane acrylate, epoxy acrylate, polyether acrylate, oligoacrylate, alkyd acrylate, polyol acrylate, and the like, depending on the molecular structure of the skeleton. The prepolymer having a molecular weight of about 1,000 to 7000 is used.

As the photopolymerizable monomer, a monofunctional acrylate or a polyfunctional acrylate is used. Representative monomers include diethylene glycol diacrylate, neopentyl glycol diacrylate, 1,6-hexanediol acrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, and the like.

Examples of the photopolymerization initiator include benzoin ethers such as isobutyl benzoin ether, α-acyloxime esters, benzyl ketals such as 2,2-dimethoxy-2-phenylacetophenone, and acetophenone derivatives such as diethoxyacetophenone. Ketones such as benzophenone and ketone-amines are used.

As the energy irradiation device, a commercially available one can be used, but a photopolymer handbook (1989) can be used.
The contents described on pages 515 et seq. Can be referred to.

The abrasive used in the polishing layer of the present invention has a Mohs hardness of 6 to 9 and contains 60% or more of the total amount of powder.
Generally, a material with an abrasive or polishing action,
Alumina, γ-alumina, α, γ-alumina, fused alumina, silicon carbide, chromium oxide, cerium oxide, corundum, artificial diamond, diamond, α-iron oxide, garnet, emery (main components: corundum and magnetite), garnet , Silica, silicon nitride, boron nitride, molybdenum carbide, boron carbide, tungsten carbide, titanium carbide,
Tripoly, diatomaceous earth, dolomite, silica, zirconia, titanium oxide, red iron oxide, etc.
The above materials can be used in combinations of up to four types.
These abrasives have an average particle size of 0.3 to 10 μm. In the case of a polishing layer, these abrasives have a binder of 10 to 1 with respect to 100 parts by weight of the abrasive.
It is used in the range of 000 parts by weight.

Specific examples of the abrasive include AKP1, AKP15, AKP20, AKP30, and AK manufactured by Sumitomo Chemical Co., Ltd.
P50, AKP80, Hit50, Hit100 and the like. These are described in JP-B-52-28642.
No., JP-B-49-39402, JP-A-63-9882
8, U.S. Pat. No. 3,687,725, U.S. Pat.
No. 07, U.S. Pat. No. 3,041,196, U.S. Pat.
066, U.S. Pat. No. 3,630,910, U.S. Pat.
No. 3412, US Pat. No. 4,117,190, British Patent 11
No. 45349 and West German Patent No. 853211.

As the binder used in the polishing layer of the present invention, the above-mentioned ultraviolet curable resin is used in an amount of 50% of the total amount of the binder.
% Or more, and in addition, conventionally known thermoplastic resins, thermosetting resins, reactive resins, electron beam-curable resins, visible light-curable resins, and mixtures thereof are used.

As the thermoplastic resin, the softening temperature is 200
C. or lower, having an average molecular weight of 10,000 to 300,000 and a degree of polymerization of about 50 to 2,000, more preferably 20 to 2,000.
It is about 0 to 800. For example, vinyl chloride vinyl acetate copolymer, vinyl chloride copolymer, vinyl chloride vinyl acetate vinyl alcohol copolymer, vinyl chloride vinyl alcohol copolymer, vinyl chloride vinylidene copolymer, vinyl acrylonitrile copolymer, acrylic acid Ester acrylonitrile copolymer, acrylate vinylidene chloride copolymer, acrylate styrene copolymer, methacrylate acrylonitrile copolymer,
Methacrylic acid ester vinylidene chloride copolymer, methacrylic acid ester styrene copolymer, urethane elastomer, nylon-silicone resin, nitrocellulose-polyamide resin, polyfucca vinyl, vinylidene chloride acrylonitrile copolymer, butadiene acrylonitrile copolymer, polyamide Resins, polyvinyl butyral, cellulose derivatives (cellulose acetate butyrate, cellulose diacetate, cellulose triacetate, cellulose propionate, nitrocellulose, ethyl cellulose, methyl cellulose, propyl cellulose, methyl ethyl cellulose, carboxymethyl cellulose,
Acetylcellulose), various synthetic rubber-based thermoplastic resins such as styrene-butadiene copolymer, polyester resin, polycarbonate resin, chlorovinyl ether acrylate copolymer, amino resin, polyamide resin, and mixtures thereof. .

Examples of these resins are described in JP-B-37-68.
No. 77, JP-B-39-12528, JP-B-39-19
No. 282, No. 40-5349, No. 40-20
No. 907, JP-B-41-9463, JP-B-41-14
No. 059, JP-B-41-16985, JP-B-42-6
No. 428, JP-B-42-11621, JP-B-43-4
No. 623, JP-B-43-15206, JP-B-44-2
No. 889, No. 44-17947, No. 44-1
No. 8232, No. 45-14020, No. 45-
14500, JP-B-47-18573, JP-B-47
-22063, JP-B-47-2264, JP-B-4
7-22068, JP-B-47-22069, JP-B-47-22070, JP-B-47-27886, JP-A-57-133521, JP-A-58-137133, JP-A-58-166533, and JP-A-58-166533. 58-222433,
JP-A-59-58642 and the like, U.S. Pat.
And U.S. Pat. No. 4,752,530.

The thermosetting resin or the reactive resin has a molecular weight of 200,000 or less in the state of a coating liquid, and becomes infinite by a reaction such as condensation and addition by heating and humidifying after coating and drying. Is preferred. Among these resins, those which do not soften or melt before the resin is thermally decomposed are preferable. Specifically, for example, a phenol resin, a phenoxy resin, an epoxy resin, a polyurethane resin, a polyester resin, a polyurethane polycarbonate resin, a urea resin, a melamine resin, an alkyd resin, a silicone resin, an acrylic reaction resin (an electron beam curing resin), and an epoxy-polyamide Resin, nitrocellulose melamine resin, mixture of high molecular weight polyester resin and isocyanate prepolymer, mixture of methacrylate copolymer and diisocyanate prepolymer, mixture of polyester polyol and polyisocyanate, urea formaldehyde resin, low molecular weight glycol / high molecular weight A diol / triphenylmethane triisocyanate mixture, a polyamine resin, a polyimine resin, and mixtures thereof.

Examples of these resins are described in JP-B-39-810.
No. 3, JP-B-40-9779, JP-B-41-7192
No., JP-B-41-8016, JP-B-41-14275
No., JP-B-42-18179, JP-B-43-1208
No. 1, Japanese Patent Publication No. 44-28023, Japanese Patent Publication No. 45-145
No. 01, JP-B-45-24902, JP-B-46-13
103, JP-B-47-2265, JP-B-47-2
No. 2066, JP-B-47-22067, JP-B-47-
22072, JP-B-47-22073, JP-B-47
-28045, JP-B-47-28048, JP-B-4
It is described in publications such as 7-28922.

These thermoplastic resins, thermosetting resins, and reactive resins have carboxylic acid (COOM), sulfinic acid, sulfenic acid, sulfonic acid (SO ₃ M), phosphoric acid (PO (OM) (OM)), phosphonic acid, sulfuric acid (OSO ₃ M), and acidic groups such as ester groups thereof (M is H, an alkali metal, an alkaline earth metal,
Hydrocarbon groups), amino acids; aminosulfonic acids, sulfuric acid or phosphoric acid esters of amino alcohols, amphoteric groups such as alkyl betaine, amino groups, imino groups, imide groups,
An amide group, etc., a hydroxyl group, an alkoxyl group, a thiol group, an alkylthio group, a halogen group (F, Cl, Br,
I) a silyl group, a siloxane group, an epoxy group, an isocyanato group, a cyano group, a nitrile group, an oxo group, an acryl group, and a phosphine group. ^-6 eq ~ 1 × 10 ^-2
It is preferable to include eq.

As the polyisocyanate used in the polishing layer of the present invention, tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, naphthylene-1,5-diisocyanate, o-toluidine diisocyanate, isophorone diisocyanate Isocyanates such as triphenylmethane triisocyanate and isophorone diisocyanate, products of the isocyanates and polyalcohols, polyisocyanates of 2 to 10-mers produced by condensation of isocyanates, and products of polyisocyanates and polyurethanes Those whose terminal functional groups are isocyanates can be used. The average molecular weight of these polyisocyanates is 100
Those of 20,000 are preferred.

Commercially available trade names of these polyisocyanates include Coronate L, Coronate HL, Coronate 2030, Coronate 2031, Millionate MR, Millionate MTL (all manufactured by Nippon Polyurethane Co., Ltd.), Takenate D-102, and Takenate D-110.
N, Takenate D-200, Takenate D-202, Takenate 300S, Takenate 500 (manufactured by Takeda Pharmaceutical Co., Ltd.), Sumidur T-80, Sumidur 44S, Sumidur PF, Sumidur L, Sumidur N, Desmodur L , Death module IL, death module N, death module HL, death module T65, death module 15, death module R, death module R
F, death module SL, death module Z4273
(Manufactured by Sumitomo Bayer Co., Ltd.), and these can be used alone or in combination of two or more by utilizing the difference in curing reactivity.

For the purpose of accelerating the curing reaction, a hydroxyl group (butanediol, hexanediol, having a molecular weight of 100
A compound having an amino group (such as monomethylamine, dimethylamine, or trimethylamine), a metal oxide catalyst, or a catalyst such as iron acetylacetonate can also be used in combination. It is desirable that these compounds having a hydroxyl group or an amino group are polyfunctional. These polyisocyanates have a total amount of binder resin and polyisocyanate of 10 in the polishing layer and the back layer.
It is preferably used in an amount of 2 to 70 parts by weight per 0 parts by weight, more preferably 5 to 50 parts by weight. Examples of these are disclosed in JP-A-60-131622 and JP-A-61-741.
No. 38 and the like.

In addition, compounds having various functions are added to the polishing layer as additives. For example, a dispersant, a lubricant, an antistatic agent, an antioxidant, a fungicide, a coloring agent, a solvent, and the like are added.

The powdery lubricant used in the polishing layer of the present invention includes graphite, molybdenum disulfide, boron nitride, graphite fluoride, calcium carbonate, barium sulfate, silicon oxide, titanium oxide, zinc oxide, tin oxide, and the like. Inorganic fine powder such as tungsten disulfide, acrylic styrene resin fine powder, benzoguanamine resin fine powder, melamine resin fine powder,
There are resin fine powders such as polyolefin resin fine powder, polyester resin fine powder, polyamide resin fine powder, polyimide resin fine powder, and polyhooker ethylene resin fine powder.

As the organic compound-based lubricant, silicone oil (dialkyl polysiloxane, dialkoxy polysiloxane, phenyl polysiloxane, fluoroalkyl polysiloxane (KF96, KF69 manufactured by Shin-Etsu Chemical Co., Ltd.)
)), Fatty acid-modified silicone oil, fluoroalcohol, polyolefin (polyethylene wax, polypropylene, etc.), polyglycol (ethylene glycol, polyethylene oxide wax, etc.), tetrafluoroethylene oxide wax, polytetrafluoroglycol, perfluoroalkyl ether, perfluoro Fatty acids, perfluoro fatty acid esters, perfluoroalkyl sulfates, perfluoroalkyl sulfonates, perfluoroalkylbenzene sulfonates, perfluoroalkyl phosphates, and other compounds containing fluorine or silicon, alkyl sulfates, alkyl sulfonates , Alkyl phosphonic acid triester,
Organic acids and organic acid ester compounds such as alkyl phosphonic acid monoesters, alkyl phosphonic acid diesters, alkyl phosphates, succinates, etc., triazaindolizine, tetraazaindene, benzotriazole, benzotriazine, benzodiazole, EDTA, etc. nitrogen·
Heterocyclic compound containing sulfur, having 10 to 40 carbon atoms
Consisting of a monobasic fatty acid of formula (I) and any one or more of monohydric or dihydric alcohols having 2 to 40 carbon atoms, trihydric alcohol, tetrahydric alcohol, and hexahydric alcohol Esters, fatty acid esters of monohydric to hexavalent alcohols having a total of 11 to 70 carbon atoms in total with monobasic fatty acids having 10 or more carbon atoms and carbon atoms of the fatty acids, 8 to 40 carbon atoms And fatty acid amides, fatty acid alkyl amides and aliphatic alcohols.

Specific examples of these compounds include butyl caprylate, octyl caprylate, ethyl laurate, butyl laurate, octyl laurate, ethyl myristate, butyl myristate, octyl myristate, 2-ethylhexyl myristate, Ethyl palmitate, butyl palmitate, octyl palmitate, 2 ethylhexyl palmitate, ethyl stearate, butyl stearate, isobutyl stearate, octyl stearate, 2 ethyl hexyl stearate, amyl stearate, isoamyl stearate, 2 stearic acid
Ethylpentyl, 2-hexyldecyl stearate, isotridecyl stearate, stearic acid amide, alkyl stearate, butoxyethyl stearate,
Anhydrosorbitan monostearate, anhydrosorbitan distearate, anhydrosorbitan tristearate, anhydrosorbitan tetrastearate, oleyl oleate, oleyl alcohol, lauryl alcohol, montan wax, carnauba wax, etc. used alone or in combination it can.

The lubricant used in the present invention includes:
Lubricating oil additives can be used alone or in combination. Antioxidants known as rust inhibitors (metal chelates such as alkylphenol, benzotriazine, tetraazaindene, sulfamide, guanidine, nucleic acid, pyridine, amine, hydroquinone, EDTA, etc.) Agents), rust inhibitors (naphthenic acid, alkenyl succinic acid, phosphoric acid, dilauryl phosphate, etc.), oil agents (rapeseed oil, lauryl alcohol, etc.), extreme pressure agents (dibenzyl sulfide, tricresyl phosphate, tributyl) Phosphite, etc.), detergents / dispersants, viscosity index improvers, pour point depressants, foaming agents and the like. These lubricants are added in the range of 0.01 to 30 parts by weight based on 100 parts by weight of the binder. These are described in JP-B-43-23889 and JP-B-48-24.
No. 041, JP-B-48-18482, JP-B-44-1
8221, JP-B-47-28043, JP-B-57-5
6132, JP-A-59-8136, JP-A-59-81
39, JP-A-61-85621, U.S. Pat.
No. 233, U.S. Pat.
No. 2235, U.S. Pat. No. 3,497,411, U.S. Pat.
No. 23086, U.S. Pat. No. 3,625,760, U.S. Pat.
No. 630772, US Pat. No. 3,634,253, US Pat. No. 3,642,539, US Pat. No. 3,687,725, US Pat. No. 4,350,311, US Pat. No. 4,497,864, US Pat. No. 4,552,794, IBM Technical Disclosure Britain (IBM Technical)
Disclosure Bulletin) Vol.
9, No7, p779 (December 1966), ELEKTRONIK 1961 No12,
p380, Handbook of Chemistry, Advanced Edition, p954-967, 19
It is described in 1980 Maruzen Issuance.

The abrasive dispersant and dispersing aid used in the present invention include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid, C2 of stearic acid, behenic acid, maleic acid, phthalic acid, etc.
40 pieces of fatty acids (R ₁ COOH, R ₁ is a carbon number 1 to 39
Alkyl groups, phenyl groups, aralkyl groups), alkali metals (Li, Na, K, NH ₄ ^+, etc.) or alkaline earth metals (Mg, Ca, Ba, etc.) of the above fatty acids, Cu, P
metal soap (copper oleate), fatty acid amide, lecithin (soybean oil lecithin) or the like composed of b. In addition, higher alcohols having 4 to 40 carbon atoms (butanol, octyl alcohol, myristyl alcohol, stearyl alcohol) and their sulfates, sulfonic acids,
Phenylsulfonic acid, alkylsulfonic acid, sulfonic acid ester, phosphoric acid monoester, phosphoric diester, phosphoric triester, alkylphosphonic acid, phenylphosphonic acid, amine compounds and the like can also be used. Further, polyethylene glycol, polyethylene oxide, sulfosuccinic acid, metal sulfosuccinate, sulfosuccinate, and the like can also be used. One or more of these dispersants are usually used, and one kind of the dispersant is added in an amount of 0.005 to 20 parts by weight based on 100 parts by weight of the binder. Regarding the method of using these dispersants, the dispersants may be previously adhered to the surface of the abrasive or non-abrasive fine powder, or may be added during dispersion.
Such a thing is, for example, JP-B-39-28369,
JP-B-44-17945, JP-B-44-18221
No., JP-B-48-7441, JP-B-48-15001
No., JP-B-48-15002, JP-B-48-1636
No. 3, JP-B-49-39402, U.S. Pat.
Nos. 93 and 3470021.

The fungicides used in the present invention include 2- (4
-Thiazolyl) -benzimidazole, N- (fluorodichloromethylthio) -phthalimide, 10.10'-
Oxybisphenoxalcin, 2,4,5.6 tetrachloroisophthalonitrile, P-tolyldiiodomethylsulfone, triiodoallyl alcohol, dihydroacetoacid, mercury phenyloleate, bis (tributyltin) oxide, saltylani There are rides. Such a substance is described in, for example, "Microbial Disaster and Prevention Technology", Engineering Book, 1972, "Chemistry and Industry", 32, 904 (1979).

As the antistatic agent used in the present invention, carbon black can be used.
Thermal for rubber, black for color, acetylene black and the like can be used. Its specific surface area is 5-500
m ² / g, DBP oil absorption 10-400 ml / 100
g, pH 2-10, water content 0.1-10%, tap density 0.1-1 g / cm ² . As a specific example of this carbon black, BLACKPEARLS 2000, 1300, 1 manufactured by Cabot Corporation
000,900,800,700, manufactured by Mitsubishi Chemical Corporation:
650B, 950B, 3250B, 850, 900, 9
60,980,1000,2300,2400,260
0 and the like. In addition, carbon black that has been subjected to surface treatment with a dispersant or the like or graphitized with a resin can also be used.

As the antistatic agent other than carbon black used in the present invention, graphite, modified graphite,
Conductive powders such as carbon black graft polymer, tin oxide-antimony oxide, tin oxide, titanium oxide-tin oxide-antimony oxide; natural surfactants such as saponin; alkylene oxide-based, glycerin-based, glycidol-based, polyhydric alcohol, Nonionic surfactants such as polyhydric alcohol esters and alkylphenol EO adducts; higher alkylamines, cyclic amines, hydantoin derivatives, amidoamines, esteramides, quaternary ammonium salts, pyridine and other heterocycles, phosphoniums and sulfoniums Anionic surfactants containing acidic groups such as carboxylic acid, sulfonic acid, phosphonic acid, phosphoric acid, sulfate ester group, phosphonate ester, phosphate ester group; amino acids; aminosulfonic acids, sulfuric acid of amino alcohol or Phosphoric esters, amphoteric surfactants such as alkyl betaine type and the like are used.

Some examples of the surfactant compounds which can be used as the antistatic agent are described in JP-A-60-28025, US Pat. Nos. 2,271,623, 2,224,472, and 22.
88226, 2676122, 2676924
Nos. 2,676,975, 2,691,566,27
27860, 2730498, 2742379
Nos. 2739891, 3068101, 31
No. 58484, No. 3201253, No. 32010191
Nos. 3,294,540, 3,415,649 and 34
No. 41413, No. 3444254, No. 3475174
No. 3,545,974, West German Patent Publication (OLS) 19
No. 42665, British Patent Nos. 1077317 and 1198
No. 450, Ryohei Oda et al., "Synthesis of Surfactants and Their Applications" (Maki Shoten, 1972 edition); W. "Surfes Active Age Entities" by Beili (Interscience Publication Corporation 1
985); P. Encyclopedia of Surfactive Agents, Vol. 2 (Chemical publishing company, 1964 edition) by Sisley; Surfactant Handbook, 6th printing (Sangyo Tosho Co., Ltd.,
December 20, 1966); Hideo Marumo, "Antistatic Agent"
Koshobo (1968) and the like.

These surfactants may be added alone or as a mixture. The amount of these surfactants used in the abrasive body is 0.01 to 10 parts by weight per 100 parts by weight of the abrasive. The amount used in the back layer is 10 binders.
It is 0.01 to 30 parts by weight per 0 parts by weight. These are used as antistatic agents, but are sometimes applied for other purposes such as improvement of dispersion, improvement of lubricity, coating aid, wetting agent, curing accelerator, and dispersion accelerator. .

As the organic solvent used in the dispersion, kneading and coating of the present invention, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone and tetrahydrofuran in any ratio; methanol, ethanol, propanol and butanol , Isobutyl alcohol, isopropyl alcohol, alcohols such as methylcyclohexanol; methyl acetate,
Ester systems such as ethyl acetate, butyl acetate, isobutyl acetate, isopropyl acetate, ethyl lactate and glycol monoethyl ether; ether systems such as diethyl ether, tetrahydrofuran, glycol dimethyl ether, glycol monoethyl ether and dioxane; benzene, toluene, xylene, Tar-based (aromatic hydrocarbons) such as cresol, chlorobenzene, and styrene; chlorinated hydrocarbons such as methylene chloride, ethylene chloride, carbon tetrachloride, chloroform, ethylene chlorohydrin, and dichlorobenzene; NN-dimethylformaldehyde , Hexane and the like can be used. These solvents are generally used in two or more kinds at an arbitrary ratio. Further, a trace amount of impurities (polymer of the solvent itself, moisture, raw material components, etc.) may be contained in an amount of 1% by weight or less. An aqueous solvent (water, alcohol, acetone, etc.) can be used instead of the organic solvent.

The method of dispersing and kneading the polishing layer composition is not particularly limited, and the order of addition of each component (resin, powder, lubricant, solvent, etc.), the addition position during dispersing and kneading, and the dispersion temperature (0
To 80 ° C.) can be appropriately set. For the preparation of the abrasive paint a usual kneading machine, for example, a two-roll mill, a three-roll mill, a ball mill, a pebble mill, a tron mill,
Sand grinder, Szegvari
Attritors, high-speed impellers, dispersers, high-speed stone mills, high-speed impact mills, dispersers, kneaders, high-speed mixers, ribbon blenders, co-kneaders, intensive mixers, tumblers, blenders, dispersers,
A homogenizer, a single screw extruder, a twin screw extruder, an ultrasonic disperser, and the like can be used. Usually, a plurality of these dispersing and kneading machines are provided for dispersing and kneading, and the treatment is continuously performed. For details of the technique relating to kneading and dispersion, see "Paint Flow and Pigment Dispersion" by TC Patton (TC Patton).
1964, published by John Wiley & Sons (John Wiley and Sons), Shinichi Tanaka, Industrial Materials 2
Vol. 5, 37 (1977) and the references cited in the book. Dispersion and kneading as auxiliary materials for dispersion and kneading
In order to promote kneading efficiently, the equivalent ball diameter is 10cmφ ~
Steel balls, steel beads, ceramic beads, glass beads, and organic polymer beads having a diameter of 0.05 mmφ can be used. These materials are not limited to spherical shapes. In addition, U.S. Pat.
It is also described in the specification such as 855156. Also in the present invention, the coating liquid for the polishing layer can be prepared by kneading and dispersing according to the method described in the above-mentioned book or the literature cited therein.

The polishing layer is formed by dissolving in an organic solvent any combination of the above-mentioned compositions and the like, and applying and drying a coating solution on a support. Alternatively, as another method, the polishing layer is simultaneously extruded together with the support in a heated and melted state (co-extrusion), or the support is extruded to form a film, and then the polishing layer is coated on the upper side thereof, and then the coating is applied to the support. The film may be oriented and stretched at 160 ° C., cooled, and wound. Stretching is performed either vertically or horizontally or both vertically and horizontally.

The support is flexible and may be made of a polyester such as polyethylene terephthalate or polyethylene naphthalate, a polyolefin such as polypropylene, a cellulose derivative such as cellulose triacetate or cellulose diacetate, or a polyvinyl chloride or the like. In addition to plastics such as vinyl resins, polycarbonate, polyimide, polyamide, and polysulfone, metals such as aluminum and copper, ceramics such as glass, and paper can also be used. Prior to coating, these supports may be subjected to corona discharge treatment, plasma treatment, undercoating treatment, heat treatment, dust removal treatment, metal deposition treatment, and alkali treatment. Regarding these supports, for example, German Patent 3,338,854
A, JP-A-59-116926, JP-A-61-129
No. 731; U.S. Pat. No. 4,388,368;
"Textile and Industry", vol. 31, p. 50-55, 1975. In addition, the Young's modulus (F5
Value) is 2 to 30K in both the width direction and the longitudinal direction according to the purpose.
g / mm ² (1 kg / m ² = 9.8 Pa) can be selected.

As a method of applying the above-mentioned coating solution for a polishing layer on a support, the viscosity of the coating solution is adjusted to 1 to 20,000 centistokes (25 ° C.), and an air doctor coater, a blade coater, an air knife coater, a squeeze Coater, impregnated coater, reverse roll coater, transfer roll coater, gravure coater, kiss coater, cast coater, spray coater, rod coater, forward rotation roll coater, curtain coater, extrusion coater, bar coater, lip coater, etc. can be used, other methods It is also possible to provide specific descriptions of these in “Coating Engineering” published by Asakura Shoten, pages 253 to 2
This is described in detail on page 77 (issued in 1963, 1963). The order of application of these coating liquids can be arbitrarily selected, and a corona discharge treatment or the like may be performed before the application of the desired liquid to improve the adhesion to the undercoat layer or the support. The multilayer structure of the polishing layer may be a simultaneous multilayer coating, a sequential multilayer coating, or the like. These are described, for example, in
-123532, JP-B-62-37451, JP-A-59-142741 and JP-A-59-1.
No. 65239, and the like.

By such a method, about 1 to about
The polishing liquid applied at about 200 μm is immediately subjected to a drying treatment at 20 to 130 ° C. in multiple stages as needed, and the polishing layer is dried to a thickness of 0.05 to 10 μm. Subsequently, ultraviolet irradiation is performed in a predetermined pattern to remove uncured portions as necessary. Then, the abrasive body of the present invention is manufactured by cutting into a desired shape. In these production methods, it is desirable that the steps of powder preliminary treatment / surface treatment, kneading / dispersion, coating / drying, smoothing treatment, heat treatment, EB treatment, surface polishing treatment, cutting, and winding are continuously performed.

When the polishing body is a polishing tape, the produced polishing tape is cut and wound around a desired plastic or metal reel. It is desirable to burnish and / or clean the abrasive tape or other abrasive body immediately before or before winding. Burnishes are designed to control the surface roughness and polishing power of the polished body.Specifically, the protrusions on the polished surface are cut with a hard material such as a sapphire blade, a razor blade, a carbide blade, a diamond blade, or a ceramic blade. Make it even or smooth. The Mohs hardness of these materials is preferably 8 or more, but is not particularly limited as long as protrusions can be removed. The shape of these materials does not need to be a blade in particular, and shapes such as a square shape, a round shape, and a wheel (these materials may be provided around a rotating cylindrical shape) can be used. The cleaning of the abrasive body is performed by wiping the surface layer of the abrasive body with a nonwoven fabric or the like in order to remove dirt and excess lubricant on the surface of the abrasive body. Such wiping materials include, for example, various types of Vilene manufactured by Japan Vilene Co., Ltd., Toraysee, Ecseine manufactured by Toray Industries, Kimwipe, various types of abrasives manufactured by Fuji Photo Film Co., Ltd. Tissue paper, such as nonwoven fabric made of rayon, nonwoven fabric made of acrylonitrile, and blended nonwoven fabric can be used. These are described, for example, in JP-B-46-39.
No. 309, JP-B-58-46768, JP-A-56-9
No. 0429, JP-B-58-46767, JP-A-63-463.
No. 259830, JP-A-1-201824 and the like.

The abrasives, binders and binders used in the present invention
Additives (lubricants, dispersants, antistatic agents, surface treatment agents, carbon black, abrasives, light-blocking agents, antioxidants, antifungal agents, etc.), solvents and supports (undercoat layer, back layer, under back) (It may have a coating layer) or the production method thereof can be referred to the production method described in JP-B-56-26890 or the like.

[0050]

EXAMPLES Examples and comparative examples of the present invention will be shown below.
Evaluate its properties. In the examples, "parts" indicates "parts by weight".

<Examples 1 to 3> The following composition A was uniformly kneaded and dispersed, the viscosity was adjusted, and a coating solution for a polishing layer mixed with a curing agent was coated on a 75 μm-thick polyethylene terephthalate support. It was applied to a thickness of 5 μm, dried, cured by irradiating ultraviolet rays, and then cut into a desired size to prepare a sample of a polished body.

As shown in Table 1 below, each of Examples 1 to 3 has a different pattern depending on the irradiation pattern of ultraviolet rays. In Example 1, a checkerboard pattern having a width of 0.1 mm was used. It has a pyramid pattern with a width of 1 mm. In Example 3, the polishing layer is formed by UV curing on the entire surface. In Examples 1 and 2, the surface layer of the polishing layer in the uncured portion was removed to provide an uneven shape.

A polishing test was performed using the polished body of the above example, and the relative wear of the steel balls was measured. The results are shown in Table 1 below. The relative abrasion amount was determined by measuring the abrasion amount of a steel ball of a 5 mmφ steel ball at a load of 300 mg and a 500 mm sweep test by a wear value of Comparative Example 1 described below.
00 is shown as a relative value for each wear amount.

<Comparative Example 1> Table 1 also shows the results of the same polishing test performed on the polished body of Comparative Example 1.
Comparative Example 1 is an example in which the binder of the polishing layer is a thermosetting resin, and the thickness of the polishing layer is 5 μm.

From the results shown in Table 1, the polished bodies according to Examples 1 to 3 of the present invention have a large relative abrasion amount, that is, a large polishing power, and particularly the polishing powers of Examples 1 and 2 in which the concavo-convex pattern is formed are particularly high. Has become.

[Coating solution composition for polishing layer: A] Abrasive (alumina: WA8000 manufactured by Fujimi Abrasives) 100 parts Binder (unsaturated polyester resin) 18 parts Binder (styrene) 6 parts Curing agent (isopropylbenzoin ether) 1 Parts Solvent (methyl ethyl ketone) 150 parts Anone 50 parts

[0057]

[Table 1]

<Examples 4 to 6> The following composition B was uniformly kneaded and dispersed, the viscosity was adjusted, and a coating solution for a polishing layer mixed with a curing agent was coated on a 75 μm-thick polyethylene terephthalate support. It was applied to a thickness of 30 μm, dried, cured by irradiating ultraviolet rays for 5 seconds, and then cut into a desired size to prepare a sample of a polished body.

As shown in Table 2 below, each of Examples 4 to 6 has a different pattern depending on the irradiation pattern of ultraviolet rays. In Example 4, a checkerboard pattern having a width of 0.2 mm was used. It has a pyramid pattern with a width of 2 mm. In Example 6, the polishing layer is formed by UV curing on the entire surface. In Examples 4 and 5, the uncured portion was removed to provide an uneven shape.

A polishing test was performed on the polished body of the above example under the same conditions as described above, and the relative wear of the steel balls was measured. The results are shown in Table 2 below. In addition, each wear amount is shown as a relative value with the measured value of Comparative Example 2 described later as 100.

<Comparative Example 2> Table 2 also shows the results of a similar polishing test performed on the polished body of Comparative Example 2.
Comparative Example 2 is an example in which the binder of the polishing layer is a thermosetting resin, and the thickness of the polishing layer is 30 μm.

From the results shown in Table 2, the polished bodies according to Examples 4 to 6 of the present invention have a large relative abrasion amount, that is, a large abrasive power, and particularly, the abrasive power obtained by forming the patterns of Examples 4 and 5 is high. Has become.

[Composition of Polishing Layer Coating Solution: B] Abrasive (Alumina: WA400 made by Fujimi Abrasives) 100 parts Binder (tripropylene glycol diacrylate) 15 parts Binder (pentaerythritol acrylate) 2 parts Curing agent (2 2-Diethoxyacetophenone) 1 part Solvent (methyl ethyl ketone) 150 parts

[0064]

[Table 2]

Claims (4)

[Claims] 1. A polishing body provided with a polishing layer comprising fine abrasive powder and a binder on a flexible support, wherein the binder comprises an ultraviolet-curable resin in an amount of 5% of the total amount of the binder.
A polishing body containing at least 0% by weight and irradiated with ultraviolet rays. 2. The polishing body according to claim 1, wherein the surface of the polishing layer containing a binder made of the ultraviolet curable resin is partially cured by irradiating a pattern having a pattern with ultraviolet rays. 3. The polishing body according to claim 2, wherein the pattern is raised by removing the surface of the polishing layer other than the portion cured by the ultraviolet rays. 4. The polishing body according to claim 3, wherein the pattern is a pyramid-shaped three-dimensional shape.