GB2057484A - A polishing body - Google Patents
A polishing body Download PDFInfo
- Publication number
- GB2057484A GB2057484A GB8025187A GB8025187A GB2057484A GB 2057484 A GB2057484 A GB 2057484A GB 8025187 A GB8025187 A GB 8025187A GB 8025187 A GB8025187 A GB 8025187A GB 2057484 A GB2057484 A GB 2057484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- polishing body
- aluminium oxide
- body according
- polishing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 82
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000011230 binding agent Substances 0.000 claims abstract description 21
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000011780 sodium chloride Substances 0.000 claims abstract description 10
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 10
- 239000000057 synthetic resin Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 8
- 229920001225 polyester resin Polymers 0.000 claims abstract description 7
- 239000004645 polyester resin Substances 0.000 claims abstract description 7
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229920006305 unsaturated polyester Polymers 0.000 claims description 7
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 239000004575 stone Substances 0.000 description 8
- 239000010438 granite Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 150000001868 cobalt Chemical class 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/12—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic water-setting, e.g. concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A polishing body comprises finely-divided aluminium oxide as polishing agent and a binding agent therefor, wherein it contains I. as aluminium oxide, a synthetic aluminium oxide of the composition 80 to 99.5% by weight aluminium oxide 0.02 to 0.05% by weight silicon dioxide and 0.03 to 0.1% by weight ferric oxide and II. as binding agent a) a hardened polyester resin which optionally contains 0.05 to 40% by weight of a synthetic resin thinner and/or 0.05 to 30% by weight sodium sulphate and/or sodium chloride or b) a magnesite binder the weight ratio of aluminum oxide to binding agent being from 3:7 to 9:3. o
Description
SPECIFICATION
Polishing body and process for the production thereof
The present invention is concerned with a polishing body comprising finely-divided aluminium oxide as polishing agent and a binding agent therefor, which polishing body is especially suitable for use in oscillating heads for dressing stone, and is also concerned with a process for producing such a polishing body.
As grinding and polishing agents, it is already known to use ioose grinding agents (grinding grains), soft-bonded grinding agents (grinding pastes), elastically-bonded grinding agents (grinding papers and grinding cloths) and rigidlybonded grinding agents (grinding bodies). The grinding or polishing bodies can be silicatebonded, magnesite-bonded, natural resin-bonded or synthetic resin-bonded and, as actual grinding or polishing agent, can also contain aluminium oxide and especially a-aluminium oxide or corundum.
However, hitherto, in the stone-working industry, especially for polishing pieces of hard stone, such as granite, polishing was carried out with polishing felts and a liquid polishing agent, the polishing agent thereby being applied manually with a brush or in some other manner to the workpiece.
Attempts have also already been made to use polishing bodies for dressing pieces of stone. It was thereby found that, to a certain extent, it is possible to dress relatively soft kinds of stone, such as marble, with such polishing bodies.
However, these polishing bodies proved to be unsuitable for dressing hard stone and especially granite.
Thus, it is an object of the present invention to provide a polishing body which can be used for dressing hard stone and especially granite and which thereby gives results which are at least just as good as if not better than those obtained with the previously used liquid or paste-like polishing agents.
We have now found that this object can be achieved by combining a synthetic aluminium oxide of definite composition with certain binding agents in a definite ratio.
Thus, according to the present invention, there is provided a polishing body comprising finelydivided aluminium oxide as polishing agent and a binding agent therefor, wherein it contains I. as aluminium oxide, a synthetic aluminium oxide of the composition
80 to 99.5% by weight aluminium oxide (a-Al203) 0.02 to 0.05% by weight silicon dioxide and
0.03 to 0.1% by weight ferric oxide and
II. as binding agent
a) a hardened polyester resin which optionally contains 0.05 to 40% by weight of a synthetic resin thinner and/or 0.05 to 30% by weight sodium sulphate and/or sodium chloride or
b) a magnesite binder the weight ratio of aluminium oxide to binding agent being from 3 :7 to 9 :3.
The finely-divided aluminium oxide contained in the polishing body according to the present invention can, in addition to silicon dioxide and ferric oxide, optionally also contain small amounts of other metal oxides. The aluminium oxide preferably has a grain or agglomerate size of less than 44 ym, less than 2% of the agglomerate particles having a grain size of more than 44 ym, has a soft and very fine grain or agglomerate state and includes primary crystals with a particle size of about 1 ym. It is preferable to use an aluminium oxide with a bulk density of 500 to 660 g/l.
The hardened polyester resin employed in the polishing body according to the present invention as binding agent is preferably formed by hardening a liquid, unsaturated polyester in the presence of styrene as synthetic resin thinner and in the presence of a conventional hardening catalyst, which is preferably a peroxide catalyst, and optionally in the presence of a conventional accelerator, such as a cobalt salt or a tertiary amine. It is preferable to form the hardened polyester resin by hardening an unsaturated polyester resin containing 30 to 35% by weight of styrene which, at 200 C, has a viscosity of 1 800 to 2100 cP. These unsaturated polyester resins are commercially available and known to the expert, as are the catalysts and accelerators used for the hardening thereof.
According to a preferred embodiment of the present invention, the polishing body can be formed from 30 to 90% by weight of the powdered, synthetic aluminium oxide, 5 to 80% by weight of liquid, unsaturated polyester, 0.05 to 40% by weight of synthetic resin thinner, which is preferably styrene, 0.01 to 5% by weight of a hardening catalyst, which is preferably a peroxide catalyst, 0.01 to 5% by weight of an accelerator, which is preferably a cobalt salt or a tertiary amine, and 0.05 to 30% by weight of sodium sulphate.
When the binding agent of the polishing body according to the present invention is a magnesite binder, then this can be made in the usual way from calcined, powdered magnesium oxide, a concentrated magnesium chloride solution and optionally sodium chloride (industrial salt).
In this case, the polishing body is preferably formed from 30 to 90% by weight of powdered, synthetic aluminium oxide, 30 to 32% by weight of a highly concentrated magnesium chloride solution (lye), 10 to 80% by weight of calcined magnesium oxide (magnesite powder) and 5 to 20% by weight sodium chloride (industrial salt).
According to the present invention, it is preferable to give the polishing body a particular shape which has proved to be especially advantageous for its intended use, namely, grinding hard stone. Thus, the polishing body is, according to an especially preferred embodiment of the present invention, formed as a parallelepiped block, the surface of which is to face the object to be polished being convexly domed in at least one direction and the surface of which is remote from the object to be polished being flat and carrying a dovetail projection for fixing the block on to a polishing body holder, said dovetail projection tapering in the direction of insertion thereof. The surface facing the object to be polished is preferably formed as a cylinder face convexly domed transversely to the direction of insertion of the dovetail projection.
The present invention will now be explained in more detail, with reference to the accompanying drawing, in which:
Fig. 1 is a perspective side view of a polishing body according to the present invention fixed on to a polishing body holder;
Fig. 2 is an end view of the polishing body according to Fig. 1 fixed on to the polishing body holder; and
Fig. 3 is a lower view of the polishing body according to Fig. 1 fixed on to a polishing body holder.
As is to be seen from Fig. 1, a polishing body 1 according to the present invention has a surface 2 facing the object to be polished which, in the longitudinal direction of the parallelepiped polishing body, is convexly domed and is preferably formed as a convexly domed cylinder surface. On the side remote from the object to be polished, the polishing body according to the present invention has a flat surface 3 which carries a dovetail projection 4 by means of which the polishing body can be fixed on to a polishing body holder 5. The dovetail projection 4 is thereby formed tapering in the insertion direction of the polishing body, as is to be seen especially from
Fig. 3.Normally, a polishing tool has several, preferably six, such polishing bodies 1 which are fixed by means of appropriately arranged polishing body holders 5, the dovetail projections thereby tapering outwardly from the middle axis of the tool in a radial direction so that, in use, the individual polishing bodies, due to the centrifugal forces when the tool is rotating, are firmly clamped in the polishing body holder 5.
The present invention also provides a process for the production of the polishing body according to the present invention, wherein synthetic, powdered aluminium oxide is mixed with the components of the binding agent and the mixture is introduced into a mould treated with a separating agent and allowed to harden therein. It is preferable to mix the powdered aluminium oxide with a liquid polyester, a liquid hardening catalyst therefor, a liquid accelerator and optionally a synthetic resin thinner, as well as optionally sodium sulphate, to pour the mass, brought to the desired viscosity, into a prepared mould, from which the polishing body formed can be taken out after 12 hours and, after a subsequent hardening time of about 4 weeks, to use it.
According to a preferred embodiment of the process according to the present invention, a solution of average viscosity of an unsaturated polyester in styrene, which contains 30 to 35% by weight styrene, is mixed with a hardening catalyst, an accelerator and optionally finely-divided sodium sulphate are added thereto and well mixed therewith, powered aluminium oxide and optionally also a synthetic resin thinner, such as styrene, are gradually added thereto until the mass has a pourable consistency, whereupon the mass is poured into a mould and allowed to harden for 10 to 12 hours at a temperature of more than 1 60C. The polishing body formed is then taken out of the mould and stored for 4 weeks for subsequent hardening.
According to a further embodiment of the process according to the present invention, a concentrated magnesium chloride solution is mixed with calcined, powdered magnesium oxide and powdered aluminium oxide powder, sodium chloride is added thereto, the mass, brought to the desired consistency, is poured into the mould and allowed to harden at a temperature of 18 to 250C.
The polishing body thus formed is taken out of the mould and stored before use for 4 weeks for the purpose of subsequent hardening.
For the production of the polishing body according to the present invention with a binding agent based on an unsaturated polyester, any desired usual accelerators can be used and, besides sodium chloride, use can also be made of sodium thiosulphate and organic dilution agents, for example, methanol, in order to bring the mass to the desired pourable consistency.
The polishing bodies according to the present invention are outstandingly useful for grinding and polishing hard stone and especially granite, the polishing qualities thereby obtained being just as good as if not better than those obtained with the previously used laborious polishing processes employing polishing felts and a liquid polishing agent. The polishing bodies according to the present invention are especially useful in fully automated polishing lines for dressing granite, which was not possible with the previously known polishing agents, polishing pastes and polishing bodies. Thus, the polishing bodies previously known for dressing marble were found to be unsuitable for dressing granite, whereas the polishing bodies according to the present invention enable surprisingly good results to be achieved.
Claims (14)
1. A polishing body comprising finely-divided aluminium oxide as polishing agent and a binding agent therefor, wherein it contains
I. as aluminium oxide, a synthetic aluminium oxide of the composition
80 to 99.5% by weight aluminium oxide
0.02 to 0.05% by weight silicon dioxide and
0.03 to 0.01% by weight ferric oxide and
II. as binding agent
a) a hardened polyester resin which optionally contains 0.05 to 40% by weight of a synthetic resin thinner and/or 0.05 to 30% by weight sodium sulphate and/or sodium chloride or
b) a magnesite binder the weight ratio of aluminium oxide to binding agent being from 3:7 to 9:3.
2. A polishing body according to claim 1, wherein the aluminium oxide has a grain or agglomerate size of less than 44 ym and an average primary crystal size of about 1 ,um.
3. A polishing body according to claim 1 or 2, wherein the hardened polyester resin has been formed by hardening a liquid, unsaturated polyester in the presence of styrene as synthetic resin thinner, of a conventional catalyst and optionally of a conventional accelerator.
4. A polishing body according to claim 3, wherein the hardened polyester resin has been formed by hardening an unsaturated polyester resin with a viscosity at 200C of 1800 to 2100 cP containing 30 to 35% by weight of styrene.
5. A polishing body according to any of the preceding claims, wherein it has been formed from 30 to 90% by weight of the aluminium oxide, 5 to 80% by weight of liquid, unsaturated polyester, 0.05 to 40% by weight of synthetic resin thinner, 0.01 to 5% by weight of a catalyst, 0.01 to 5% by weight of an accelerator and 0.05 to 30% by weight of sodium sulphate.
6. A polishing body according to claim 1 or 2, wherein the magnesite binder has been formed from magnesium oxide, a concentrated magnesium chloride solution and optionally sodium chloride.
7. A polishing body according to claim 6, wherein it has been formed from 30 to 90% by weight of aluminium oxide, 30 to 32% by weight of a concentrated magnesium chloride solution, 10 to 80% by weight of calcined magnesium oxide and 5 to 20% by weight sodium chloride.
8. A polishing body according to any of the preceding claims, wherein it is formed as a parallelepiped block, the surface of which is to face the object to be polished being convexly domed at least in one direction and the surface of which is remote from the object to be polished being flat and carrying a dovetail projection for fixing the block on to a polishing body holder, said dovetail projection tapering in the direction of insertion thereof.
9. A polishing body according to claim 8, wherein the surface which is to face the object to be polished is formed as a cylinder face convexly domed transversely to the direction of insertion of the dovetail projection.
10. A polishing body according to any of the preceding claims, substantially as hereinbefore described and exemplified and with reference to the accompanying drawings.
11. A process for the production of a polishing body according to any of claims 1 to 10, wherein the synthetic, powdered aluminium oxide is mixed with the components of the binding agent and the mixture is introduced into a mould treated with a separating agent and allowed to harden therein.
12. A process according to claim 1 wherein a solution of average viscosity of an unsaturated polyester in styrene, which contains 30 to 35% by weight of styrene, is mixed with a hardening catalyst, an accelerator and optionally finelydivided sodium sulphate are added thereto and mixed therewith, powdered aluminium oxide and synthetic resin thinner are gradually admixed until the mass has a mouldable consistency, whereafter the mass is poured into a mould and allowed to harden for 10 to 1 2 hours at a temperature of more than 1 6 C and the polishing body is then removed from the mould and, before use, allowed to harden further for about 4 weeks.
13. A process according to claim 1 wherein a concentrated magnesium chloride solution is mixed with calcined, powdered magnesium oxide and powdered aluminium oxide, sodium chloride is mixed in, the mass obtained is poured into a mould and allowed to harden at a temperature of from 18 to 250C and then the polishing body thus formed is taken from the mould and, before use, allowed to harden further for about 4 weeks.
14. A polishing body according to any of claimS 1 to 10, whenever produced by the process according to any of claims 11 to 14.
14. A process for the production of a polishing body according to any of claims 1 to 10, substantially as hereinbefore described and exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792931652 DE2931652A1 (en) | 1979-08-03 | 1979-08-03 | POLISHING BODY AND METHOD FOR THE PRODUCTION THEREOF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2057484A true GB2057484A (en) | 1981-04-01 |
| GB2057484B GB2057484B (en) | 1983-08-10 |
Family
ID=6077612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8025187A Expired GB2057484B (en) | 1979-08-03 | 1980-08-01 | Polishing body |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT370023B (en) |
| DE (1) | DE2931652A1 (en) |
| FR (1) | FR2462970A1 (en) |
| GB (1) | GB2057484B (en) |
| IT (1) | IT1130827B (en) |
| NL (1) | NL8004208A (en) |
| SE (1) | SE449619B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556735A1 (en) * | 1983-12-15 | 1985-06-21 | Nony Sa | New varnish composition with high abrasion resistance for surface coating |
| EP0381662A2 (en) * | 1989-01-30 | 1990-08-08 | MAGINDAG Steirische Magnesit-Industrie Aktiengesellschaft | Process for the manufacture of abrasive bodies |
| EP0480133A2 (en) * | 1990-10-09 | 1992-04-15 | Norton Company | Dry grinding wheel and its application |
| EP0555356A1 (en) * | 1990-10-31 | 1993-08-18 | HERMANN, Paul F. | Abrasive propellant for cleaning of surfaces and machinery |
| US5551960A (en) * | 1993-03-12 | 1996-09-03 | Minnesota Mining And Manufacturing Company | Article for polishing stone |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT389883B (en) * | 1986-08-21 | 1990-02-12 | Igel Schleifmittel | ABRASIVE COMPOSITION OR ABRASIVES AND METHOD FOR THE PRODUCTION THEREOF |
| DE69107492T2 (en) * | 1990-03-30 | 1995-10-19 | Wiand Ronald C | Marble, granite and stone processing methods and grinding pads therefor. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1068018A (en) * | 1965-02-22 | 1967-05-10 | Ici Ltd | Self-supporting plastic films containing an inert abrasive |
| CH481723A (en) * | 1965-09-02 | 1969-11-30 | Esterol Ag | Abrasive Articles and Method of Making Same |
| JPS5218956B2 (en) * | 1973-02-20 | 1977-05-25 | ||
| SU536952A1 (en) * | 1974-12-27 | 1976-11-30 | Московский химико-технологический институт им.Д.И.Менделеева | Abrasive tool mass |
-
1979
- 1979-08-03 DE DE19792931652 patent/DE2931652A1/en not_active Ceased
-
1980
- 1980-07-11 AT AT0363880A patent/AT370023B/en not_active IP Right Cessation
- 1980-07-22 NL NL8004208A patent/NL8004208A/en not_active Application Discontinuation
- 1980-07-30 SE SE8005472A patent/SE449619B/en not_active IP Right Cessation
- 1980-07-31 FR FR8016967A patent/FR2462970A1/en active Granted
- 1980-08-01 IT IT68243/80A patent/IT1130827B/en active
- 1980-08-01 GB GB8025187A patent/GB2057484B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556735A1 (en) * | 1983-12-15 | 1985-06-21 | Nony Sa | New varnish composition with high abrasion resistance for surface coating |
| EP0381662A2 (en) * | 1989-01-30 | 1990-08-08 | MAGINDAG Steirische Magnesit-Industrie Aktiengesellschaft | Process for the manufacture of abrasive bodies |
| EP0381662A3 (en) * | 1989-01-30 | 1990-09-26 | Magindag Steirische Magnesit-Industrie Aktiengesellschaft | Process for the manufacture of abrasive bodies |
| EP0480133A2 (en) * | 1990-10-09 | 1992-04-15 | Norton Company | Dry grinding wheel and its application |
| EP0480133A3 (en) * | 1990-10-09 | 1992-09-16 | Norton Company | Dry grinding wheel and its application |
| EP0555356A1 (en) * | 1990-10-31 | 1993-08-18 | HERMANN, Paul F. | Abrasive propellant for cleaning of surfaces and machinery |
| EP0555356A4 (en) * | 1990-10-31 | 1994-10-05 | Paul F Hermann | Abrasive propellant for cleaning of surfaces and machinery |
| US5551960A (en) * | 1993-03-12 | 1996-09-03 | Minnesota Mining And Manufacturing Company | Article for polishing stone |
Also Published As
| Publication number | Publication date |
|---|---|
| AT370023B (en) | 1983-02-25 |
| DE2931652A1 (en) | 1981-02-19 |
| FR2462970B1 (en) | 1985-03-22 |
| NL8004208A (en) | 1981-02-05 |
| SE8005472L (en) | 1981-02-04 |
| GB2057484B (en) | 1983-08-10 |
| ATA363880A (en) | 1982-07-15 |
| IT8068243A0 (en) | 1980-08-01 |
| IT1130827B (en) | 1986-06-18 |
| SE449619B (en) | 1987-05-11 |
| FR2462970A1 (en) | 1981-02-20 |
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