FI58137C - I vaerme formbar akrylskiva och foerfarande foer dess framstaellning - Google Patents
I vaerme formbar akrylskiva och foerfarande foer dess framstaellning Download PDFInfo
- Publication number
- FI58137C FI58137C FI1757/73A FI175773A FI58137C FI 58137 C FI58137 C FI 58137C FI 1757/73 A FI1757/73 A FI 1757/73A FI 175773 A FI175773 A FI 175773A FI 58137 C FI58137 C FI 58137C
- Authority
- FI
- Finland
- Prior art keywords
- sheet
- elongation
- crosslinking agent
- polymer
- viscosity number
- Prior art date
Links
- 229920000642 polymer Polymers 0.000 claims description 59
- 239000003431 cross linking reagent Substances 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 41
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 25
- 238000006116 polymerization reaction Methods 0.000 claims description 22
- 239000000178 monomer Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 229920000058 polyacrylate Polymers 0.000 claims description 14
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 12
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003856 thermoforming Methods 0.000 claims description 10
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 229920006037 cross link polymer Polymers 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 239000006188 syrup Substances 0.000 description 58
- 235000020357 syrup Nutrition 0.000 description 54
- 238000002474 experimental method Methods 0.000 description 19
- -1 alkyl methacrylates Chemical class 0.000 description 11
- 238000005266 casting Methods 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 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 8
- 208000010392 Bone Fractures Diseases 0.000 description 5
- 206010017076 Fracture Diseases 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 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 description 5
- BEQKKZICTDFVMG-UHFFFAOYSA-N 1,2,3,4,6-pentaoxepane-5,7-dione Chemical compound O=C1OOOOC(=O)O1 BEQKKZICTDFVMG-UHFFFAOYSA-N 0.000 description 4
- 239000012986 chain transfer agent Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N divinylbenzene Substances C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 3
- 239000011953 free-radical catalyst Substances 0.000 description 3
- 239000002195 soluble material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- UWNADWZGEHDQAB-UHFFFAOYSA-N 2,5-dimethylhexane Chemical group CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 description 2
- 239000004641 Diallyl-phthalate Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- MOYAFQVGZZPNRA-UHFFFAOYSA-N Terpinolene Chemical compound CC(C)=C1CCC(C)=CC1 MOYAFQVGZZPNRA-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XHGIFBQQEGRTPB-UHFFFAOYSA-N tris(prop-2-enyl) phosphate Chemical compound C=CCOP(=O)(OCC=C)OCC=C XHGIFBQQEGRTPB-UHFFFAOYSA-N 0.000 description 2
- YKFLAYDHMOASIY-UHFFFAOYSA-N γ-terpinene Chemical compound CC(C)C1=CCC(C)=CC1 YKFLAYDHMOASIY-UHFFFAOYSA-N 0.000 description 2
- NOBYOEQUFMGXBP-UHFFFAOYSA-N (4-tert-butylcyclohexyl) (4-tert-butylcyclohexyl)oxycarbonyloxy carbonate Chemical compound C1CC(C(C)(C)C)CCC1OC(=O)OOC(=O)OC1CCC(C(C)(C)C)CC1 NOBYOEQUFMGXBP-UHFFFAOYSA-N 0.000 description 1
- LGJCFVYMIJLQJO-UHFFFAOYSA-N 1-dodecylperoxydodecane Chemical compound CCCCCCCCCCCCOOCCCCCCCCCCCC LGJCFVYMIJLQJO-UHFFFAOYSA-N 0.000 description 1
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 description 1
- PSYGHMBJXWRQFD-UHFFFAOYSA-N 2-(2-sulfanylacetyl)oxyethyl 2-sulfanylacetate Chemical compound SCC(=O)OCCOC(=O)CS PSYGHMBJXWRQFD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FFYWKOUKJFCBAM-UHFFFAOYSA-N ethenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC=C FFYWKOUKJFCBAM-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000012686 granular polymerization Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229940087305 limonene Drugs 0.000 description 1
- 235000001510 limonene Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QYZFTMMPKCOTAN-UHFFFAOYSA-N n-[2-(2-hydroxyethylamino)ethyl]-2-[[1-[2-(2-hydroxyethylamino)ethylamino]-2-methyl-1-oxopropan-2-yl]diazenyl]-2-methylpropanamide Chemical compound OCCNCCNC(=O)C(C)(C)N=NC(C)(C)C(=O)NCCNCCO QYZFTMMPKCOTAN-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08F220/12—Esters of monohydric alcohols or phenols
-
- 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
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Graft Or Block Polymers (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Materials For Medical Uses (AREA)
- Sheet Holders (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2586772 | 1972-06-02 | ||
| GB2586772A GB1425948A (en) | 1972-06-02 | 1972-06-02 | Thermoplastic acrylic sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI58137B FI58137B (fi) | 1980-08-29 |
| FI58137C true FI58137C (fi) | 1980-12-10 |
Family
ID=10234664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI1757/73A FI58137C (fi) | 1972-06-02 | 1973-05-30 | I vaerme formbar akrylskiva och foerfarande foer dess framstaellning |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS4951383A (cs) |
| AT (1) | AT326368B (cs) |
| AU (1) | AU469807B2 (cs) |
| BE (1) | BE800446A (cs) |
| CA (1) | CA1023494A (cs) |
| CH (1) | CH587877A5 (cs) |
| DE (2) | DE2366606C3 (cs) |
| ES (2) | ES415495A1 (cs) |
| FI (1) | FI58137C (cs) |
| FR (1) | FR2186345B1 (cs) |
| GB (1) | GB1425948A (cs) |
| IE (1) | IE37636B1 (cs) |
| IT (1) | IT988836B (cs) |
| LU (1) | LU67725A1 (cs) |
| NL (1) | NL172552C (cs) |
| NO (1) | NO144266C (cs) |
| SE (1) | SE397094B (cs) |
| ZA (1) | ZA733488B (cs) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4152506A (en) * | 1978-04-26 | 1979-05-01 | E. I. Du Pont De Nemours And Company | Preparation of thermoformable methyl methacrylate sheets |
| JPS60144312A (ja) * | 1983-12-29 | 1985-07-30 | Kyowa Gas Chem Ind Co Ltd | 改良されたアクリル樹脂板 |
| EP0734828B1 (en) * | 1995-03-27 | 1999-06-30 | Elf Atochem S.A. | Process for producing a thermoformable acrylic resin sheet, thermoformable acrylic resin sheet and shaped article having a granit-like appearance which has been obtained by thermoforming such a sheet |
| RU2228341C2 (ru) * | 2000-10-26 | 2004-05-10 | Аржаков Сергей Алексеевич | Способ получения органического стекла на основе метилметакрилата |
| DE10349544A1 (de) * | 2003-10-22 | 2005-05-25 | Röhm GmbH & Co. KG | Herstellung von farblosen, transparent oder gedeckt eingefärbten PLEXIGLAS-Blöcken aus restinitiatorfreiem Präpolymerisat durch thermische Polymerisation |
| CN112497778A (zh) * | 2020-12-07 | 2021-03-16 | 锦西化工研究院有限公司 | 制备特殊形状航空有机玻璃板材的方法 |
| WO2024223730A1 (en) | 2023-04-25 | 2024-10-31 | Tenachem | Edge seal for manufacturing two-pane or multi-pane insulating glass or solar modules comprising a photocured acrylic sealant composition as secondary sealant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA846267A (en) * | 1970-07-07 | D. Niederhauser Warren | Thermoformable acrylic sheet | |
| FR1021337A (fr) * | 1949-05-13 | 1953-02-17 | Imperila Chemical Ind Ltd | Procédé de polymérisation perfectionné |
| BE572359A (cs) * | 1957-11-05 | |||
| US3153022A (en) * | 1958-10-03 | 1964-10-13 | Du Pont | Monomer-polymer acrylic sirups |
| DE1595479A1 (de) * | 1966-02-11 | 1970-04-30 | Degussa | Verfahren zur Herstellung von gegossenen Platten aus Methacrylsaeuremethylester |
-
1972
- 1972-06-02 GB GB2586772A patent/GB1425948A/en not_active Expired
-
1973
- 1973-05-15 IE IE774/73A patent/IE37636B1/xx unknown
- 1973-05-23 AU AU56063/73A patent/AU469807B2/en not_active Expired
- 1973-05-23 ZA ZA00733488A patent/ZA733488B/xx unknown
- 1973-05-29 SE SE7307622A patent/SE397094B/xx unknown
- 1973-05-30 FI FI1757/73A patent/FI58137C/fi active
- 1973-05-30 IT IT7324871A patent/IT988836B/it active
- 1973-05-30 CH CH785173A patent/CH587877A5/xx not_active IP Right Cessation
- 1973-05-30 DE DE2366606A patent/DE2366606C3/de not_active Expired - Lifetime
- 1973-05-30 DE DE2327722A patent/DE2327722C3/de not_active Expired
- 1973-06-01 NL NLAANVRAGE7307660,A patent/NL172552C/xx active Search and Examination
- 1973-06-01 FR FR7319993A patent/FR2186345B1/fr not_active Expired
- 1973-06-01 LU LU67725A patent/LU67725A1/xx unknown
- 1973-06-01 CA CA172,974A patent/CA1023494A/en not_active Expired
- 1973-06-01 NO NO2295/73A patent/NO144266C/no unknown
- 1973-06-01 AT AT481473A patent/AT326368B/de not_active IP Right Cessation
- 1973-06-02 ES ES415495A patent/ES415495A1/es not_active Expired
- 1973-06-02 JP JP48062463A patent/JPS4951383A/ja active Pending
- 1973-06-02 ES ES0415492A patent/ES415492A1/es not_active Expired
- 1973-06-04 BE BE131874A patent/BE800446A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2186345A1 (cs) | 1974-01-11 |
| AU5606373A (en) | 1974-11-28 |
| ES415492A1 (es) | 1976-06-01 |
| CA1023494A (en) | 1977-12-27 |
| CH587877A5 (cs) | 1977-05-13 |
| NO144266C (no) | 1981-08-05 |
| DE2366606C3 (cs) | 1990-12-06 |
| BE800446A (fr) | 1973-12-04 |
| IE37636B1 (en) | 1977-09-14 |
| DE2327722A1 (de) | 1973-12-20 |
| ES415495A1 (es) | 1978-09-01 |
| SE397094B (sv) | 1977-10-17 |
| NL172552B (nl) | 1983-04-18 |
| JPS4951383A (cs) | 1974-05-18 |
| GB1425948A (en) | 1976-02-25 |
| LU67725A1 (cs) | 1974-07-05 |
| AT326368B (de) | 1975-12-10 |
| FR2186345B1 (cs) | 1977-12-30 |
| NL7307660A (cs) | 1973-12-04 |
| ATA481473A (de) | 1975-02-15 |
| AU469807B2 (en) | 1976-02-26 |
| DE2327722C3 (de) | 1986-04-17 |
| IT988836B (it) | 1975-04-30 |
| FI58137B (fi) | 1980-08-29 |
| ZA733488B (en) | 1975-01-29 |
| NO144266B (no) | 1981-04-21 |
| NL172552C (nl) | 1983-09-16 |
| IE37636L (en) | 1973-12-02 |
| DE2327722B2 (de) | 1980-05-29 |
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