CH621562A5 - Process for preparing a copolymer and use thereof for producing mouldings, in particular contact lenses - Google Patents
Process for preparing a copolymer and use thereof for producing mouldings, in particular contact lenses Download PDFInfo
- Publication number
- CH621562A5 CH621562A5 CH1407173A CH1407173A CH621562A5 CH 621562 A5 CH621562 A5 CH 621562A5 CH 1407173 A CH1407173 A CH 1407173A CH 1407173 A CH1407173 A CH 1407173A CH 621562 A5 CH621562 A5 CH 621562A5
- Authority
- CH
- Switzerland
- Prior art keywords
- lenses
- copolymer
- hema
- monomer
- methacrylate
- Prior art date
Links
- 229920001577 copolymer Polymers 0.000 title claims description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000465 moulding Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- QRIMLDXJAPZHJE-UHFFFAOYSA-N 2,3-dihydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(O)CO QRIMLDXJAPZHJE-UHFFFAOYSA-N 0.000 claims description 28
- 239000000178 monomer Substances 0.000 claims description 27
- 239000000017 hydrogel Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 210000004087 cornea Anatomy 0.000 claims description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 230000004438 eyesight Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 230000004397 blinking Effects 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 230000001925 catabolic effect Effects 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- 230000004424 eye movement Effects 0.000 claims description 2
- 230000007794 irritation Effects 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 201000009310 astigmatism Diseases 0.000 claims 3
- 229920001477 hydrophilic polymer Polymers 0.000 claims 3
- 150000005690 diesters Chemical class 0.000 claims 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- 206010056476 Corneal irritation Diseases 0.000 claims 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims 1
- 238000009825 accumulation Methods 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- 229920006037 cross link polymer Polymers 0.000 claims 1
- 230000002045 lasting effect Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 230000004060 metabolic process Effects 0.000 claims 1
- 230000005043 peripheral vision Effects 0.000 claims 1
- 230000035790 physiological processes and functions Effects 0.000 claims 1
- 230000037303 wrinkles Effects 0.000 claims 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- 238000006116 polymerization reaction Methods 0.000 description 14
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 238000004132 cross linking Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 150000002148 esters Chemical class 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 7
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 125000005907 alkyl ester group Chemical group 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 5
- 125000004990 dihydroxyalkyl group Chemical group 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000000502 dialysis Methods 0.000 description 4
- -1 dihydro-xyalkyl acrylate Chemical compound 0.000 description 4
- 239000012259 ether extract Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 210000004400 mucous membrane Anatomy 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- JPFPDGRVRGETED-UHFFFAOYSA-N (2,2-dimethyl-1,3-dioxolan-4-yl)methyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1COC(C)(C)O1 JPFPDGRVRGETED-UHFFFAOYSA-N 0.000 description 1
- OWPUOLBODXJOKH-UHFFFAOYSA-N 2,3-dihydroxypropyl prop-2-enoate Chemical compound OCC(O)COC(=O)C=C OWPUOLBODXJOKH-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- RJMFTFBTROYXJR-UHFFFAOYSA-N C(C(O)CO)C=C(C(=O)O)C.C(C(=C)C)(=O)OCC(O)CO Chemical group C(C(O)CO)C=C(C(=O)O)C.C(C(=C)C)(=O)OCC(O)CO RJMFTFBTROYXJR-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000006286 aqueous extract Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000012431 aqueous reaction media Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000000022 bacteriostatic agent Substances 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G02B1/043—Contact lenses
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/401—Polymers based on the polymerisation of acrylic acid, e.g. polyacrylate
- B01D71/4011—Polymethylmethacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/282—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing two or more oxygen atoms
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Toxicology (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Eyeglasses (AREA)
- Materials For Medical Uses (AREA)
- Polymerisation Methods In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29401972A | 1972-10-02 | 1972-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH621562A5 true CH621562A5 (en) | 1981-02-13 |
Family
ID=23131552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1407173A CH621562A5 (en) | 1972-10-02 | 1973-10-02 | Process for preparing a copolymer and use thereof for producing mouldings, in particular contact lenses |
Country Status (19)
| Country | Link |
|---|---|
| JP (2) | JPS5750803B2 (enExample) |
| AR (1) | AR216881A1 (enExample) |
| AT (1) | AT339596B (enExample) |
| BE (1) | BE805215A (enExample) |
| BR (1) | BR7307579D0 (enExample) |
| CA (1) | CA1002235A (enExample) |
| CH (1) | CH621562A5 (enExample) |
| DD (2) | DD109880A5 (enExample) |
| DE (1) | DE2349528C2 (enExample) |
| DK (1) | DK150526C (enExample) |
| ES (1) | ES419240A1 (enExample) |
| FR (1) | FR2201307B1 (enExample) |
| GB (1) | GB1419437A (enExample) |
| IL (1) | IL43340A (enExample) |
| IT (1) | IT995537B (enExample) |
| NL (1) | NL177601C (enExample) |
| SE (1) | SE398647B (enExample) |
| SU (1) | SU609473A3 (enExample) |
| ZA (1) | ZA737138B (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2150147A (en) * | 1983-11-25 | 1985-06-26 | Donald James Highgate | Materials for use in forming casts |
| JPS6233110A (ja) * | 1985-08-02 | 1987-02-13 | Daikin Ind Ltd | 歯科用材料 |
-
1973
- 1973-09-06 ZA ZA00737138A patent/ZA737138B/xx unknown
- 1973-09-14 SE SE7312537A patent/SE398647B/xx unknown
- 1973-09-17 GB GB4358973A patent/GB1419437A/en not_active Expired
- 1973-09-21 CA CA181,626A patent/CA1002235A/en not_active Expired
- 1973-09-24 BE BE135956A patent/BE805215A/xx not_active IP Right Cessation
- 1973-09-24 FR FR7334185A patent/FR2201307B1/fr not_active Expired
- 1973-09-27 DD DD173724A patent/DD109880A5/xx unknown
- 1973-09-27 NL NLAANVRAGE7313318,A patent/NL177601C/xx not_active IP Right Cessation
- 1973-09-27 DD DD181173*A patent/DD113556A5/xx unknown
- 1973-09-28 IT IT29576/73A patent/IT995537B/it active
- 1973-09-28 BR BR7579/73A patent/BR7307579D0/pt unknown
- 1973-09-30 IL IL43340A patent/IL43340A/en unknown
- 1973-10-01 DK DK533873A patent/DK150526C/da not_active IP Right Cessation
- 1973-10-01 JP JP48109405A patent/JPS5750803B2/ja not_active Expired
- 1973-10-01 SU SU731964203A patent/SU609473A3/ru active
- 1973-10-02 ES ES419240A patent/ES419240A1/es not_active Expired
- 1973-10-02 DE DE2349528A patent/DE2349528C2/de not_active Expired
- 1973-10-02 AT AT842673A patent/AT339596B/de not_active IP Right Cessation
- 1973-10-02 CH CH1407173A patent/CH621562A5/de not_active IP Right Cessation
- 1973-10-02 AR AR250341A patent/AR216881A1/es active
-
1982
- 1982-06-01 JP JP57093947A patent/JPS589121A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SU609473A3 (ru) | 1978-05-30 |
| GB1419437A (en) | 1975-12-31 |
| BE805215A (fr) | 1974-03-25 |
| JPS589121A (ja) | 1983-01-19 |
| AU6070173A (en) | 1975-03-27 |
| IL43340A (en) | 1976-07-30 |
| FR2201307A1 (enExample) | 1974-04-26 |
| AT339596B (de) | 1977-10-25 |
| ZA737138B (en) | 1975-04-30 |
| CA1002235A (en) | 1976-12-21 |
| DD113556A5 (enExample) | 1975-06-12 |
| FR2201307B1 (enExample) | 1977-08-05 |
| ES419240A1 (es) | 1976-03-01 |
| JPS5750803B2 (enExample) | 1982-10-29 |
| BR7307579D0 (pt) | 1974-08-22 |
| IL43340A0 (en) | 1973-11-28 |
| DD109880A5 (enExample) | 1974-11-20 |
| JPS49116187A (enExample) | 1974-11-06 |
| NL177601C (nl) | 1985-10-16 |
| DK150526B (da) | 1987-03-16 |
| NL7313318A (enExample) | 1974-04-04 |
| IT995537B (it) | 1975-11-20 |
| JPS6232456B2 (enExample) | 1987-07-15 |
| ATA842673A (de) | 1977-02-15 |
| AR216881A1 (es) | 1980-02-15 |
| DE2349528C2 (de) | 1983-07-21 |
| NL177601B (nl) | 1985-05-17 |
| SE398647B (sv) | 1978-01-09 |
| DE2349528A1 (de) | 1974-04-18 |
| DK150526C (da) | 1987-09-28 |
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