BE645697A - - Google Patents
Info
- Publication number
- BE645697A BE645697A BE645697DA BE645697A BE 645697 A BE645697 A BE 645697A BE 645697D A BE645697D A BE 645697DA BE 645697 A BE645697 A BE 645697A
- Authority
- BE
- Belgium
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C08F20/00—Homopolymers and 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
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/22—Esters containing halogen
- C08F20/24—Esters containing halogen containing perhaloalkyl radicals
-
- 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
- C08F28/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08L33/16—Homopolymers or copolymers of esters containing halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L57/00—Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
- C09D133/16—Homopolymers or copolymers of esters containing halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10734661A | 1961-05-03 | 1961-05-03 | |
US10733061A | 1961-05-03 | 1961-05-03 | |
US107342A US3256231A (en) | 1961-05-03 | 1961-05-03 | Polymeric water and oil repellents |
US288894A US3378609A (en) | 1961-05-03 | 1963-06-19 | Oil- and water-repellent compositions |
BE672427A BE672427A (ko) | 1963-09-26 | 1965-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE645697A true BE645697A (ko) | 1964-07-16 |
Family
ID=27507641
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE634770D BE634770A (ko) | 1961-05-03 | ||
BE635437D BE635437A (ko) | 1961-05-03 | ||
BE645697D BE645697A (ko) | 1961-05-03 | 1964-03-25 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE634770D BE634770A (ko) | 1961-05-03 | ||
BE635437D BE635437A (ko) | 1961-05-03 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3378609A (ko) |
BE (3) | BE645697A (ko) |
CH (6) | CH404638A (ko) |
DE (2) | DE1280208B (ko) |
GB (4) | GB1010539A (ko) |
Families Citing this family (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1388082A (fr) * | 1963-12-27 | 1965-02-05 | Kuhlmann Ets | Procédé pour l'ignifugation et l'hydrofugation des textiles |
CH1121365D (ko) * | 1964-08-14 | |||
GB1123379A (en) * | 1964-12-30 | 1968-08-14 | Daikin Ind Ltd | Fluorocarbon esters and polymers thereof |
US3491169A (en) * | 1966-07-22 | 1970-01-20 | Du Pont | Oil and water repellent |
US3532659A (en) * | 1967-04-26 | 1970-10-06 | Pennsalt Chemicals Corp | Fluorinated organic compounds and polymers thereof |
US3546187A (en) * | 1969-03-10 | 1970-12-08 | Du Pont | Oil- and water-repellent polymeric compositions |
US3547856A (en) * | 1969-03-11 | 1970-12-15 | Du Pont | Fluorinated oil and water repellents |
US3668163A (en) * | 1969-08-05 | 1972-06-06 | Du Pont | Emulsions of water in halogenated solvents which contain fluorinated oil and water repellents |
US3644241A (en) * | 1970-03-11 | 1972-02-22 | Colgate Palmolive Co | Antisoiling aerosol starch prepared from ethoxylated starch and a fluoroacrylate or fluoroalpha substituted acrylate polymer |
DK152680C (da) * | 1970-09-30 | 1988-08-22 | Minnesota Mining & Mfg | Snavsbestandigt og pletafvisende taeppemateriale samt fremgangsmaade til fremstilling af taeppematerialet |
US3869465A (en) * | 1971-03-29 | 1975-03-04 | Hoechst Ag | Dispersions of polymer fluorine-containing acrylic acid derivatives |
US3775162A (en) * | 1971-08-16 | 1973-11-27 | Hooker Chemical Corp | Leather treatment |
US4032495A (en) * | 1972-03-10 | 1977-06-28 | Produits Chimiques Ugine Kuhlmann | Water-repellent and oil-repellent compositions based on fluorine compound |
FR2175332A5 (ko) * | 1972-03-10 | 1973-10-19 | Ugine Kuhlmann | |
US3955027A (en) * | 1972-04-10 | 1976-05-04 | The Dow Chemical Company | Process and composition for water- and oil-proofing textiles |
US3997500A (en) * | 1972-04-10 | 1976-12-14 | The Dow Chemical Company | Process and composition for water- and oil-proofing textiles |
US4043965A (en) * | 1972-05-01 | 1977-08-23 | Colgate-Palmolive Company | Copolymer of acrylic acid and 1,1-dihydroperfluorooctyl methacrylate useful for applying non-permanent soil release finish |
US4043964A (en) * | 1973-11-14 | 1977-08-23 | Minnesota Mining And Manufacturing Company | Carpet treating and treated carpet |
JPS50112597A (ko) * | 1974-02-08 | 1975-09-04 | ||
DE2609462C3 (de) * | 1976-03-08 | 1979-11-29 | Hoechst Ag, 6000 Frankfurt | Perfluoralkyläthylacrylat-Copolymere |
US4059688A (en) * | 1976-06-29 | 1977-11-22 | Clairol Incorporated | Hair fixing compositions containing fluoroterpolymers and method |
US4127711A (en) * | 1977-03-31 | 1978-11-28 | E. I. Du Pont De Nemours And Company | Fluorine-containing terpolymers |
US4147851A (en) * | 1978-06-13 | 1979-04-03 | E. I. Du Pont De Nemours And Company | Fluorine-containing oil- and water-repellant copolymers |
US4256459A (en) * | 1978-06-15 | 1981-03-17 | Milliken Research Corporation | Process for dyeing closely constructed non-tufted textile materials and products produced thereby |
US4231744A (en) * | 1978-06-15 | 1980-11-04 | Milliken Research Corporation | Process for dyeing closely constructed non-tufted textile materials and products produced thereby |
JPS5845275A (ja) * | 1981-09-10 | 1983-03-16 | Daikin Ind Ltd | アクリル系粘着剤 |
US4513059A (en) * | 1982-02-02 | 1985-04-23 | Permacel | Release coating composition |
US4474982A (en) * | 1982-10-13 | 1984-10-02 | Minnesota Mining And Manufacturing Company | 1-Halomethyl-2-alkoxyethyl acrylates and methacrylates |
US4529658A (en) * | 1982-10-13 | 1985-07-16 | Minnesota Mining And Manufacturing Company | Fluorochemical copolymers and ovenable paperboard and textile fibers treated therewith |
US4525423A (en) * | 1982-10-13 | 1985-06-25 | Minnesota Mining And Manufacturing Company | Fluorochemical copolymers and ovenable paperboard and textile fibers treated therewith |
US4564561A (en) * | 1985-03-27 | 1986-01-14 | E. I. Du Pont De Nemours And Company | Fluorine-containing polymer compositions and their preparation |
US4792444A (en) * | 1985-06-14 | 1988-12-20 | Kao Corporation | Cosmetic comprising fluoroalkyl (meth)acrylate copolymers |
FR2583414B1 (fr) * | 1985-06-18 | 1987-07-31 | Charbonnages Ste Chimique | Procede de fabrication de (meth)acrylates d'alkyles fluores. |
US4595518A (en) * | 1985-07-10 | 1986-06-17 | E. I. Du Pont De Nemours And Company | Coating fibrous substrates with fluoropolymer amphoteric polymer and surfactants |
EP0294648B1 (en) * | 1987-05-25 | 1993-01-07 | Daikin Industries, Limited | Novel copolymer and water- and oil-repellent comprising the same |
WO1992001108A1 (en) * | 1990-07-11 | 1992-01-23 | E.I. Du Pont De Nemours And Company | A method for improving the hydrolytic resistance of aramid fiber |
US5314959A (en) * | 1991-03-06 | 1994-05-24 | Minnesota Mining And Manufacturing Company | Graft copolymers containing fluoroaliphatic groups |
BR9205657A (pt) * | 1991-03-06 | 1994-05-03 | Minnesota Mining & Mfg | Copolimero de enxerto fluorquimico e processos para preparar o mesmo e para reduzir a energia superficial de um polimero |
US5162469A (en) * | 1991-08-05 | 1992-11-10 | Optical Research Inc. | Composition for rigid gas permeable contact lenses |
US5387640A (en) * | 1992-01-22 | 1995-02-07 | Bayer Aktiengesellschaft | Fluorine-containing copolymers and aqueous dispersions prepared therefrom |
FR2689134B1 (fr) * | 1992-03-27 | 1997-08-14 | Atochem Elf Sa | Copolymeres d'ethylene ou de derives de l'ethylene et de (methiacrylates fluores leur procede de fabrication et leur application aux semelles de ski. |
US5380455A (en) * | 1992-06-01 | 1995-01-10 | Kao Corporation | Detergent composition |
US5451440A (en) * | 1993-07-30 | 1995-09-19 | American Tape Co. | Release coating for silicone pressure sensitive adhesives |
US5623036A (en) * | 1994-09-12 | 1997-04-22 | Elf Atochem S. A. | Method for making a surface hydrophobic |
US5859126A (en) * | 1995-09-18 | 1999-01-12 | E. I. Du Pont De Nemours And Company | Coatings containing fluorinated esters |
US5637657A (en) * | 1995-09-18 | 1997-06-10 | E. I. Du Pont De Nemours And Company | Surface coating compositions containing fluoroalkyl esters of unsaturated fatty acids |
US5681902A (en) * | 1996-01-11 | 1997-10-28 | E. I. Du Pont De Nemours And Company | Process for the perfluoroalkylation of substances having terminal unsaturation |
US5847134A (en) * | 1996-01-11 | 1998-12-08 | E. I. Du Pont De Nemours And Company | Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
TW377370B (en) * | 1996-04-12 | 1999-12-21 | Du Pont | Waterborne fluoropolymer solutions for treating hard surfaces |
US5670573A (en) * | 1996-08-07 | 1997-09-23 | E. I. Du Pont De Nemours And Company | Coatings containing fluorinated esters |
FR2758570A1 (fr) * | 1997-01-23 | 1998-07-24 | Atochem Elf Sa | Procede pour le traitement hydrophobe et oleophobe des cuirs |
US5789513A (en) * | 1997-02-26 | 1998-08-04 | E. I. Du Pont De Nemours And Company | Polyfluorourethane additives for curable coating compositions |
US6120892A (en) * | 1997-11-20 | 2000-09-19 | E. I. Du Pont De Nemours And Company | Waterborne fluoropolymer solutions for treating hard surfaces |
US6326447B1 (en) | 1998-06-19 | 2001-12-04 | E. I. Du Pont De Nemours And Company | Polymeric compositions for soil release on fabrics |
US6271289B1 (en) | 1999-11-16 | 2001-08-07 | E. I. Du Pont De Nemours And Company | Stain resistant compositions |
EP1201815B1 (en) * | 2000-10-31 | 2006-04-26 | Asahi Glass Co., Ltd. | Water repellent composition |
CA2502421A1 (en) | 2002-10-15 | 2004-04-29 | Asahi Glass Company, Limited | Water-and-oil repellant composition |
JP2007523971A (ja) * | 2003-12-31 | 2007-08-23 | スリーエム イノベイティブ プロパティズ カンパニー | 撥水撥油性フルオロアクリレート |
US7291688B2 (en) * | 2004-12-28 | 2007-11-06 | 3M Innovative Properties Company | Fluoroacrylate-mercaptofunctional copolymers |
US20060142530A1 (en) * | 2004-12-28 | 2006-06-29 | Moore George G | Water- and oil-repellent fluorourethanes and fluoroureas |
US7411020B2 (en) * | 2004-12-28 | 2008-08-12 | 3M Innovative Properties Company | Water-based release coating containing fluorochemical |
US7345123B2 (en) * | 2004-12-28 | 2008-03-18 | 3M Innovative Properties Company | Fluoroacrylate-multifunctional acrylate copolymer compositions |
US7253241B2 (en) * | 2004-12-28 | 2007-08-07 | 3M Innovative Properties Company | Fluorochemical containing low adhesion backsize |
WO2006098487A1 (ja) | 2005-03-15 | 2006-09-21 | Tokuyama Corporation | 含フッ素アルキル(メタ)アクリレートの製造方法 |
US7652112B2 (en) | 2005-07-06 | 2010-01-26 | E.I. Du Pont De Nemours And Company | Polymeric extenders for surface effects |
US20070275174A1 (en) * | 2006-05-24 | 2007-11-29 | Hanson Eric L | Fishing fly and fly fishing line with fluorocarbon coating |
EP2660372A1 (de) | 2012-05-04 | 2013-11-06 | LANXESS Deutschland GmbH | Thermoplastfasern mit reduzierter Oberflächenspannung |
US20140165263A1 (en) | 2012-12-18 | 2014-06-19 | Ansell Limited | Fluid repellent elastomeric barrier |
US10136957B2 (en) | 2015-10-30 | 2018-11-27 | Ansell Limited | Leak resistant article |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB636535A (en) * | 1942-12-24 | 1950-05-03 | Goodrich Co B F | Improvements in or relating to synthetic resin latices and method of making same |
FR1000895A (fr) * | 1949-11-29 | 1952-02-18 | Perfectionnements aux procédés de traitement des tissus | |
US2642416A (en) * | 1950-05-26 | 1953-06-16 | Minnesota Mining & Mfg | Fluorinated acrylates and polymers |
US2803615A (en) * | 1956-01-23 | 1957-08-20 | Minnesota Mining & Mfg | Fluorocarbon acrylate and methacrylate esters and polymers |
US3102103A (en) * | 1957-08-09 | 1963-08-27 | Minnesota Mining & Mfg | Perfluoroalkyl acrylate polymers and process of producing a latex thereof |
US3282905A (en) * | 1961-05-03 | 1966-11-01 | Du Pont | Fluorine containing esters and polymers thereof |
DE1444114C3 (de) * | 1963-09-26 | 1975-09-18 | E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) | Latex zum Wasser- und ÖlabstoBendmachen von Fasermaterial |
-
0
- BE BE634770D patent/BE634770A/xx unknown
- BE BE635437D patent/BE635437A/xx unknown
-
1962
- 1962-04-25 GB GB15713/62A patent/GB1010539A/en not_active Expired
- 1962-04-25 GB GB15714/62A patent/GB988473A/en not_active Expired
- 1962-04-25 GB GB15715/62A patent/GB971732A/en not_active Expired
- 1962-05-02 CH CH527662A patent/CH404638A/de unknown
- 1962-05-02 CH CH1322562A patent/CH413580A/de unknown
- 1962-05-02 CH CH1141662A patent/CH439747A/de unknown
- 1962-05-02 CH CH527462A patent/CH504577A/de not_active IP Right Cessation
- 1962-05-02 CH CH1322662A patent/CH410403A/de unknown
- 1962-05-02 CH CH527562A patent/CH504578A/de not_active IP Right Cessation
- 1962-05-03 DE DEP29322A patent/DE1280208B/de active Pending
-
1963
- 1963-06-19 US US288894A patent/US3378609A/en not_active Expired - Lifetime
- 1963-09-11 GB GB35816/63A patent/GB1011612A/en not_active Expired
- 1963-10-08 DE DE19631444117 patent/DE1444117A1/de active Pending
-
1964
- 1964-03-25 BE BE645697D patent/BE645697A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE635437A (ko) | |
CH413580A (de) | 1966-05-15 |
GB1011612A (en) | 1965-12-01 |
CH410403A (de) | 1966-03-31 |
CH404638A (de) | 1966-07-15 |
CH527662A4 (ko) | 1966-07-15 |
BE634770A (ko) | |
CH504578A (de) | 1969-09-30 |
CH439747A (de) | 1967-07-15 |
CH504577A (de) | 1969-09-30 |
GB988473A (en) | 1965-04-07 |
DE1280208B (de) | 1968-10-17 |
GB971732A (en) | 1964-10-07 |
US3378609A (en) | 1968-04-16 |
CH527562A4 (ko) | 1969-09-30 |
DE1444117A1 (de) | 1969-03-06 |
GB1010539A (en) | 1965-11-17 |
CH527462A4 (ko) | 1969-09-30 |