ES456177A1 - Procedimiento para la obtencion de materiales espumados en poliisocianurato termoconformables. - Google Patents
Procedimiento para la obtencion de materiales espumados en poliisocianurato termoconformables.Info
- Publication number
- ES456177A1 ES456177A1 ES456177A ES456177A ES456177A1 ES 456177 A1 ES456177 A1 ES 456177A1 ES 456177 A ES456177 A ES 456177A ES 456177 A ES456177 A ES 456177A ES 456177 A1 ES456177 A1 ES 456177A1
- Authority
- ES
- Spain
- Prior art keywords
- thermoformable
- polyisocyanurate foams
- production
- polyethers
- reacting
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/80—Masked polyisocyanates
- C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
- C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
- C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
- C08G18/8012—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with diols
- C08G18/8019—Masked aromatic polyisocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2115/00—Oligomerisation
- C08G2115/02—Oligomerisation to isocyanurate groups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S521/902—Cellular polymer containing an isocyanurate structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31547—Of polyisocyanurate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Procedimiento para la obtención de materiales espumados de poliisocianurato termo-conformables por reacción de compuestos que llevan grupos hidroxilo con un exceso de poliisocianatos en presencia de catalizadores de trimerización de isocianato, agentes de propulsión y, en caso dado, ulteriores agentes auxiliares para la espumación, caracterizado porque como poliisocianato se emplea un polimetilenpolifenilpoliisocianato, que contiene como mínimo un 80% en peso de diisocianatodifenilmetano y porque como compuestos que llevan grupos hidroxilo se emplean: a) poliéteres, que llevan como mínimo un grupo hidroxilo, del índice OH 26 - 112, cuya proporción en óxido alquilénico se compone en como mínimo un 20% en peso, preferentemente un 30 a 50% en peso de restos de óxido etilénico y b) dialcoholes con un peso molecular de 62 hasta 200, empleándose el poliéter, que contiene como mínimo un grupo hidroxilo, en una cantidad de 0,015 hasta 0,04 equivalentes de OH y los dialcoholes en una cantidad de 0,2hasta 0,4 equivalentes de OH por equivalente de NCO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2607380A DE2607380C3 (de) | 1976-02-24 | 1976-02-24 | Verfahren zur Herstellung von warmformbaren Polyisocyanuratschaumstoffen |
Publications (1)
Publication Number | Publication Date |
---|---|
ES456177A1 true ES456177A1 (es) | 1978-01-16 |
Family
ID=5970687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES456177A Expired ES456177A1 (es) | 1976-02-24 | 1977-02-23 | Procedimiento para la obtencion de materiales espumados en poliisocianurato termoconformables. |
Country Status (10)
Country | Link |
---|---|
US (1) | US4129697A (es) |
JP (1) | JPS52103495A (es) |
BE (1) | BE851698A (es) |
BR (1) | BR7700994A (es) |
DE (1) | DE2607380C3 (es) |
ES (1) | ES456177A1 (es) |
GB (1) | GB1517673A (es) |
IT (1) | IT1083472B (es) |
NL (1) | NL7701943A (es) |
SE (1) | SE434161B (es) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169921A (en) * | 1973-01-11 | 1979-10-02 | The Celotex Corporation | Polyisocyanurate |
US4125505A (en) * | 1976-07-06 | 1978-11-14 | Union Carbide Corporation | Polymer/polyols from high ethylene oxide content polyols |
DE2722400C2 (de) * | 1977-05-17 | 1985-05-30 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von wärmebeständigen, blasenfreien Isocyanuratgruppen aufweisenden Kunststoffen |
US4212917A (en) * | 1978-06-01 | 1980-07-15 | The Celotex Corporation | Polyisocyanurate foam laminate |
US4311801A (en) * | 1978-06-01 | 1982-01-19 | The Celotex Corporation | Polyisocyanurate foam and process therefor |
JPS5552313A (en) * | 1978-10-09 | 1980-04-16 | Takeda Chem Ind Ltd | Manufacture of urethane-modified rigid isocyanurate foam |
JPS5565214A (en) * | 1978-11-10 | 1980-05-16 | Bridgestone Corp | Preparation of flame-resistant polyisocyanurate foam |
DE2856456A1 (de) * | 1978-12-28 | 1980-07-17 | Basf Ag | Verfahren zur herstellung von polyurethan-hartschaumstoffen |
DE2915474C2 (de) * | 1979-04-17 | 1986-05-15 | Hans-Georg Ring | Biegesteifer Verbundschichtstoff, Verfahren zu seiner Herstellung, sowie Verwendung als Fertighimmel für Automobile |
US4272618A (en) * | 1979-04-30 | 1981-06-09 | Texaco Development Corp. | Heat stable reaction injection molded elastomers |
US4299924A (en) * | 1979-08-10 | 1981-11-10 | Toyota Jidosha Kogyo Kabushiki Kaisha | Polyisocyanurate resin and process for making the same |
US4362678A (en) * | 1980-01-18 | 1982-12-07 | The Celotex Corporation | Method of making polyisocyanurate foam laminate |
DE3139395C2 (de) * | 1981-10-03 | 1984-09-13 | Bayer Ag, 5090 Leverkusen | Verfahren zum Verfestigen von geologischen Gesteins-, Erd- und Kohleformationen |
EP0095530B1 (en) * | 1982-06-01 | 1987-04-22 | The Dow Chemical Company | Polyurethane and urethane-modified isocyanurate foams and a method for their preparation |
US4425446A (en) | 1982-06-23 | 1984-01-10 | Sealed Air Corporation | Urea-modified isocyanurate foam, composition and method |
US4401769A (en) * | 1982-06-23 | 1983-08-30 | Sealed Air Corporation | Foam, composition and method useful for retrofit insulation |
US4430840A (en) * | 1982-06-23 | 1984-02-14 | Sealed Air Corporation | Foam, composition and method useful for retrofit insulation |
US4444913A (en) * | 1982-11-18 | 1984-04-24 | Thermocell Development, Ltd. | Modified polyisocyanurate foam and method of preparation |
DE3309127A1 (de) * | 1983-03-15 | 1984-09-20 | Basf Ag, 6700 Ludwigshafen | Zellige polyurethan-formkoerper, verfahren zu deren herstellung durch thermoplastische verformung von polyester-polyurethan-schaumstoffen sowie deren verwendung |
US4607064A (en) * | 1983-05-16 | 1986-08-19 | The Dow Chemical Company | Polyurethane and urethane-modified isocyanurate foams and a polyol composition useful in their preparation |
US4520042A (en) * | 1983-06-20 | 1985-05-28 | Thermocell Development, Ltd. | High-modulus, flexible urethane coating and method of preparation |
US4661529A (en) * | 1984-08-09 | 1987-04-28 | The Dow Chemical Company | Polyurethane and urethane-modified isocyanurate foams and a polyol composition useful in their preparation |
JPH0621147B2 (ja) * | 1985-09-27 | 1994-03-23 | 三井東圧化学株式会社 | 硬質ポリウレタンフオ−ムの製造法 |
US4623673A (en) * | 1985-10-24 | 1986-11-18 | The Dow Chemical Company | Urethane-modified polyisocyanurate rigid foam |
DE3610961A1 (de) * | 1986-04-02 | 1987-10-08 | Bayer Ag | Thermisch verformbare pur-hartschaumstoffe, ein verfahren zu ihrer herstellung und ihre verwendung zur herstellung von automobilinnenverkleidung |
DE3737524C2 (de) * | 1987-11-05 | 1994-12-22 | Bayer Ag | Verfahren zur Herstellung von Skikernen |
DE3942468A1 (de) * | 1989-12-22 | 1991-06-27 | Bayer Ag | Verfahren zur herstellung von formkoerpern oder folien aus vernetzten polyisocyanat-polyadditionsprodukten und die so erhaltenen formkoerper |
US5251849A (en) * | 1989-12-26 | 1993-10-12 | Florida International University For Board Of Regents | Strain reduced airplane skin |
DE4001249A1 (de) * | 1990-01-18 | 1991-07-25 | Bayer Ag | Verfahren zur herstellung von offenzelligen, kaltverformbaren polyurethan-hartschaumstoffen und deren verwendung zur herstellung von autohimmeln |
US5057544A (en) * | 1990-11-16 | 1991-10-15 | Basf Corporation | Integral skin rigid urethane foam |
CA2071030A1 (en) * | 1991-06-17 | 1992-12-18 | Kenneth P. Klapper | Thermoformable polyisocyanurate foam laminates for interior finishing applications |
US5260344A (en) * | 1992-03-13 | 1993-11-09 | Asahi Glass Company, Ltd. | Open cell rigid isocyanurate foams and method for producing the same and vacuum heat insulating layer by use of the same |
FR2737433B1 (fr) * | 1995-08-02 | 1997-10-31 | Maillet Orthopedie Sarl | Procede de fabrication par moulage d'un siege notamment d'un siege orthopedique et siege obtenu |
US6723761B1 (en) * | 1996-02-15 | 2004-04-20 | Bose Corporation | Microcellular foaming |
US6722611B1 (en) * | 1999-09-20 | 2004-04-20 | Kuang-Hsi Wu | Reinforced aircraft skin and method |
JP2002155125A (ja) * | 2000-11-20 | 2002-05-28 | Sumika Bayer Urethane Kk | ポリウレタン変性ポリイソシアヌレートフォームの製造方法 |
EP1358240A1 (en) | 2000-12-27 | 2003-11-05 | World Properties, Inc. | Polyurethane foams and method of manafacture thereof |
US6990754B2 (en) * | 2002-08-05 | 2006-01-31 | R. G. Barry Corporation | Slipper insole, slipper, and method for manufacturing a slipper |
US6931763B2 (en) * | 2002-08-05 | 2005-08-23 | R.G. Barry Corporation | Slipper insole, slipper, and method for manufacturing a slipper |
WO2004111101A1 (en) * | 2003-06-12 | 2004-12-23 | Huntsman International Llc | Process for preparing a polyisocyanurate polyurethane material |
US7238730B2 (en) * | 2003-06-26 | 2007-07-03 | Basf Corporation | Viscoelastic polyurethane foam |
US20040266900A1 (en) | 2003-06-26 | 2004-12-30 | Raymond Neff | Viscoelastic polyurethane foam |
US7208531B2 (en) * | 2003-06-26 | 2007-04-24 | Basf Corporation | Viscoelastic polyurethane foam |
US20070033835A1 (en) * | 2005-08-02 | 2007-02-15 | Bray Walter T Jr | Insole arrangement; footwear with insole arrangement; and, method of preparation |
JP5044560B2 (ja) * | 2005-10-13 | 2012-10-10 | ハンツマン・インターナショナル・エルエルシー | ポリイソシアヌレートポリウレタン材料の調製方法 |
EP1940899B1 (en) * | 2005-10-13 | 2009-08-05 | Huntsman International Llc | Process for preparing polyisocyanurate polyurethane material |
EP1989242B1 (en) * | 2006-02-21 | 2010-07-21 | Huntsman International Llc | Process for making a polyisocyanurate composite |
DE602007003377D1 (de) * | 2006-06-14 | 2009-12-31 | Huntsman Int Llc | Verbundplatte |
EP2015014A1 (de) * | 2007-07-11 | 2009-01-14 | Bayer MaterialScience AG | Verfahren zur Trocknung von Schäumen aus wässrigen PUR-Dispersionen |
JP5986838B2 (ja) * | 2011-07-28 | 2016-09-06 | 株式会社東洋クオリティワン | 吸音衝撃吸収材及びその製造方法 |
CN102875770B (zh) * | 2012-09-20 | 2014-03-26 | 吴江市天源塑胶有限公司 | 一种耐高温的改性聚异氰脲酸酯泡沫塑料的制备方法 |
CN109053993A (zh) * | 2018-08-08 | 2018-12-21 | 浙江清优材料科技有限公司 | 一种动力电池电芯用防护材料 |
DE102018217545A1 (de) * | 2018-10-12 | 2020-04-16 | BSH Hausgeräte GmbH | Verfahren und Haushaltsgerät |
WO2024133871A1 (en) | 2022-12-23 | 2024-06-27 | Recticel | Pir chemical recycling by alkaline cleavage |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745133A (en) * | 1968-02-05 | 1973-07-10 | Upjohn Co | Cellular isocyanurate containing polymers |
US3644232A (en) * | 1968-05-24 | 1972-02-22 | Mobay Chemical Corp | Flame-resistant, nonbursting polyisocyanurate foams |
US3676380A (en) * | 1969-05-19 | 1972-07-11 | Upjohn Co | Low friability polyisocyanurate foams |
FR2086977A5 (es) * | 1970-04-15 | 1971-12-31 | Naphtachimie Sa | |
US3857800A (en) * | 1970-06-19 | 1974-12-31 | Dunlop Holdings Ltd | Flexible polyurethane foams prepared from a mixture of polyether polyols |
BE792706A (nl) * | 1972-01-13 | 1973-06-14 | Shell Int Research | Compositie geschikt voor toepassing in stijve isocyanuraten en werkwijze ter bereiding van dergelijke stijve isocyanuraten |
JPS48101497A (es) * | 1972-04-04 | 1973-12-20 | ||
US3836424A (en) * | 1972-07-18 | 1974-09-17 | R Grieve | Polyisocyanurate foam articles |
US4009130A (en) * | 1975-06-11 | 1977-02-22 | Texaco Development Corporation | Preparation of isocyanurate foams using alkali metal tertiaryamino dithiocarbamate salt catalysts |
-
1976
- 1976-02-24 DE DE2607380A patent/DE2607380C3/de not_active Expired
-
1977
- 1977-02-04 US US05/765,490 patent/US4129697A/en not_active Expired - Lifetime
- 1977-02-17 BR BR7700994A patent/BR7700994A/pt unknown
- 1977-02-22 BE BE175147A patent/BE851698A/xx not_active IP Right Cessation
- 1977-02-22 GB GB7340/77A patent/GB1517673A/en not_active Expired
- 1977-02-22 IT IT48157/77A patent/IT1083472B/it active
- 1977-02-23 SE SE7702008A patent/SE434161B/xx not_active IP Right Cessation
- 1977-02-23 ES ES456177A patent/ES456177A1/es not_active Expired
- 1977-02-23 NL NL7701943A patent/NL7701943A/xx not_active Application Discontinuation
- 1977-02-24 JP JP1874877A patent/JPS52103495A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
SE434161B (sv) | 1984-07-09 |
JPS52103495A (en) | 1977-08-30 |
NL7701943A (nl) | 1977-08-26 |
BR7700994A (pt) | 1977-10-18 |
IT1083472B (it) | 1985-05-21 |
GB1517673A (en) | 1978-07-12 |
JPS546280B2 (es) | 1979-03-27 |
DE2607380B2 (de) | 1980-09-18 |
US4129697A (en) | 1978-12-12 |
DE2607380A1 (de) | 1977-08-25 |
BE851698A (fr) | 1977-08-22 |
DE2607380C3 (de) | 1981-07-23 |
SE7702008L (sv) | 1977-08-25 |
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