ES2001053A6 - Una composicion de resina epoxidica y un procedimiento para preparar con ella estratificados electricos. - Google Patents
Una composicion de resina epoxidica y un procedimiento para preparar con ella estratificados electricos.Info
- Publication number
- ES2001053A6 ES2001053A6 ES8600735A ES8600735A ES2001053A6 ES 2001053 A6 ES2001053 A6 ES 2001053A6 ES 8600735 A ES8600735 A ES 8600735A ES 8600735 A ES8600735 A ES 8600735A ES 2001053 A6 ES2001053 A6 ES 2001053A6
- Authority
- ES
- Spain
- Prior art keywords
- bisphenol
- epoxy resin
- resin compositions
- preparation
- acid
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- 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
- C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
- C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
- C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
- C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
- C08G14/08—Ureas; Thioureas
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0326—Organic insulating material consisting of one material containing O
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Epoxy Resins (AREA)
- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Catalysts (AREA)
- Measurement Of Force In General (AREA)
- Organic Insulating Materials (AREA)
- Insulating Bodies (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Materials For Medical Uses (AREA)
- Graft Or Block Polymers (AREA)
Abstract
SE DESCRIBE UNA COMPOSICION DE RESINA EPOXIDICA QUE TIENE EXCEPCIONAL ESTABILIDAD Y QUE COMPRENDE UNA RESINA EPOXIDICA TAL COMO EL DIGLICIDIL-ETER DE BISFENOL A, UN DISOLVENTE ORGANICO, UN ENDURECEDOR FENOLICO POLIVALENTE Y UN ACIDO QUE TIENE PKA A 25JC MENOR QUE 2,5 O UN ESTER O ANHIDRIDO DE DICHO ACIDO. LA COMPOSICION DE RESINA EPOXIDICA PUEDE CONTENER TAMBIEN UN BISFENOL O DERIVADO DE BISFENOL TAL COMO BISFENOL A. ADEMAS, SE PUEDE AÑADIR TAMBIEN A LA COMPOSICION, ANTES DE SU USO, UN ACELERADOR TAL COMO UN IMIDAZOL SUSTITUIDO CON ALQUILO. ESTA COMPOSICION ES UTIL EN UN PROCEDIMIENTO PARA LA PREPARACION DE ESTRATIFICADOS ELECTRICOS TALES COMO PANELES DE CIRCUITOS ELECTRICOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB858519290A GB8519290D0 (en) | 1985-07-31 | 1985-07-31 | Resin composition |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2001053A6 true ES2001053A6 (es) | 1988-04-16 |
Family
ID=10583118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8600735A Expired ES2001053A6 (es) | 1985-07-31 | 1986-07-30 | Una composicion de resina epoxidica y un procedimiento para preparar con ella estratificados electricos. |
Country Status (17)
Country | Link |
---|---|
US (2) | US4713137A (es) |
EP (1) | EP0211382B1 (es) |
JP (1) | JPH0772225B2 (es) |
KR (1) | KR900001944B1 (es) |
CN (1) | CN1017248B (es) |
AT (1) | ATE106435T1 (es) |
AU (1) | AU593826B2 (es) |
BR (1) | BR8603615A (es) |
CA (1) | CA1292824C (es) |
DE (1) | DE3689869T2 (es) |
DK (1) | DK364586A (es) |
ES (1) | ES2001053A6 (es) |
FI (1) | FI89807C (es) |
GB (1) | GB8519290D0 (es) |
IN (1) | IN167874B (es) |
MY (1) | MY102533A (es) |
NO (1) | NO171414C (es) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1257434A (en) * | 1985-08-26 | 1989-07-11 | Gary W. Bogan | Encapsulating compositions |
ATE72450T1 (de) * | 1986-12-15 | 1992-02-15 | Siemens Nixdorf Inf Syst | Verfahren zur herstellung von prepregs und deren verwendung. |
US4732962A (en) * | 1987-02-18 | 1988-03-22 | General Motors Corporation | High temperature epoxy tooling composition of bisphenol-A epoxy, trifunctional epoxy, anhydride curing agent and an imidazole catalyst |
US4868059A (en) * | 1987-11-16 | 1989-09-19 | The Dow Chemical Company | Curable composition containing a difunctional epoxy resin, a polyfunctional epoxy resin, a difunctional phenol and a polyfunctional phenol |
US5179139A (en) * | 1988-10-24 | 1993-01-12 | Mitsubishi Rayon Co., Ltd. | Dihydroxybiphenyl-advanced epoxy resin blends |
JP2829369B2 (ja) * | 1988-10-24 | 1998-11-25 | 三菱レイヨン株式会社 | エポキシ樹脂組成物 |
US5043184A (en) * | 1989-02-06 | 1991-08-27 | Somar Corporation | Method of forming electrically conducting layer |
DE58907952D1 (de) * | 1989-03-03 | 1994-07-28 | Siemens Ag | Epoxidharz-Formmassen. |
US5166289A (en) * | 1990-12-19 | 1992-11-24 | Exxon Chemical Patents Inc. | Thermoset coating composition having improved hardness |
DE4110219A1 (de) * | 1991-03-28 | 1992-10-01 | Huels Troisdorf | Verfahren zur herstellung von prepregs mit loesungsmittelfreiem epoxidharz |
EP0507271A3 (en) * | 1991-04-03 | 1993-04-21 | The Dow Chemical Company | Epoxy resin compositions for use in electrical laminates |
US5478607A (en) * | 1991-05-17 | 1995-12-26 | Hitachi Telecon Technologies Ltd. | Method for use of preflux, printed wiring board, and method for production thereof |
US5364925A (en) * | 1992-01-27 | 1994-11-15 | The Dow Chemical Company | Epoxy resin advanced with a dihydric phenol and further chain extended with an additional dihydric phenol for use in electrical laminates |
AU4953496A (en) * | 1995-03-14 | 1996-10-02 | Nissan Chemical Industries Ltd. | Heat-resistant epoxy resin composition |
US6207595B1 (en) * | 1998-03-02 | 2001-03-27 | International Business Machines Corporation | Laminate and method of manufacture thereof |
JPH11279376A (ja) * | 1998-03-27 | 1999-10-12 | Hitachi Chem Co Ltd | 印刷配線板用エポキシ樹脂組成物およびこれを用いた印刷配線板 |
EP1331234B1 (de) * | 2002-01-28 | 2004-09-22 | ABB Research Ltd. | Vergussmasse auf der Basis duroplastischer Epoxidharze |
US7094843B2 (en) * | 2002-08-19 | 2006-08-22 | 3M Innovative Properties Company | Epoxy compositions having improved shelf life and articles containing the same |
US6855738B2 (en) | 2003-06-06 | 2005-02-15 | Dow Global Technologies Inc. | Nanoporous laminates |
US7078816B2 (en) * | 2004-03-31 | 2006-07-18 | Endicott Interconnect Technologies, Inc. | Circuitized substrate |
US7270845B2 (en) * | 2004-03-31 | 2007-09-18 | Endicott Interconnect Technologies, Inc. | Dielectric composition for forming dielectric layer for use in circuitized substrates |
US7145221B2 (en) * | 2004-03-31 | 2006-12-05 | Endicott Interconnect Technologies, Inc. | Low moisture absorptive circuitized substrate, method of making same, electrical assembly utilizing same, and information handling system utilizing same |
EP1806376B1 (en) * | 2004-10-27 | 2009-05-13 | Nagase Chemtex Corporation | Heat-resistant composite material |
CN101679610B (zh) * | 2007-06-15 | 2012-11-21 | 陶氏环球技术公司 | 用于使用环氧树脂组合物制备复合材料的方法 |
US8455573B2 (en) * | 2010-12-20 | 2013-06-04 | E I Du Pont De Nemours And Company | Curable composition comprising imidazolium monocarboxylate salt |
US11325326B2 (en) | 2015-02-27 | 2022-05-10 | Huntsman International Llc | Process for manufacturing a fiber reinforced composite article, the composite article obtained and the use thereof |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3314912A (en) * | 1963-01-23 | 1967-04-18 | Hooker Chemical Corp | Epoxy resin compositions containing triorgano phosphate diluents |
CH506581A (de) * | 1968-01-25 | 1971-04-30 | Hoechst Ag | Verfahren zur Herstellung von Epoxidharzschaumstoffen |
DE1770400A1 (de) * | 1968-05-13 | 1972-04-06 | Hoechst Ag | Verfahren zur Herstellung von Epoxidharzschaumstoffen |
US3577370A (en) * | 1968-08-05 | 1971-05-04 | Armour Ind Chem Co | Modifier for phenolic resins |
US3842037A (en) * | 1972-06-08 | 1974-10-15 | Shell Oil Co | Process for preparing higher molecular weight polyepoxide products by condensing lower molecular weight polyepoxide with polyhydric phenols |
US4046733A (en) * | 1975-12-30 | 1977-09-06 | Westinghouse Electric Corporation | Sulfonic acid composition for forming thermoparticulating coating |
GB2038348A (en) * | 1978-12-12 | 1980-07-23 | Desai Polymer Dev | Phenolic materials |
US4331582A (en) * | 1980-01-14 | 1982-05-25 | Hitco | Epoxy latent catalyst |
US4366295A (en) * | 1981-06-01 | 1982-12-28 | The Dow Chemical Company | Stable precatalyzed epoxy resin compositions |
US4433014A (en) * | 1982-06-21 | 1984-02-21 | Desoto, Inc. | Pigmented, corrosion resistant, thermosetting coating compositions |
US4393181A (en) * | 1982-06-30 | 1983-07-12 | Shell Oil Company | Polyfunctional phenolic-melamine epoxy resin curing agents |
US4438254A (en) * | 1983-02-28 | 1984-03-20 | The Dow Chemical Company | Process for producing epoxy resins |
US4803732A (en) * | 1983-10-25 | 1989-02-07 | Dillon Harvey A | Hearing aid amplification method and apparatus |
CA1276358C (en) * | 1984-01-31 | 1990-11-13 | Dieter H. Klein | Epoxy resin for preparing electric laminates |
US4528359A (en) * | 1984-05-16 | 1985-07-09 | The Dow Chemical Company | Adducts of epoxy resins and amino-substituted aromatic sulfonic acid amides |
US4668718A (en) * | 1984-10-05 | 1987-05-26 | Ciba-Geigy Corporation | Self-extinguishing, track-resistant epoxy resin moulding composition and use thereof |
US4604317A (en) * | 1984-10-05 | 1986-08-05 | The Dow Chemical Company | Curable compositions containing a polyepoxide and a halogenated bisphenol |
-
1985
- 1985-07-31 GB GB858519290A patent/GB8519290D0/en active Pending
-
1986
- 1986-07-29 AT AT86110466T patent/ATE106435T1/de not_active IP Right Cessation
- 1986-07-29 DE DE3689869T patent/DE3689869T2/de not_active Expired - Fee Related
- 1986-07-29 EP EP86110466A patent/EP0211382B1/en not_active Expired - Lifetime
- 1986-07-30 IN IN610/MAS/86A patent/IN167874B/en unknown
- 1986-07-30 KR KR1019860006241A patent/KR900001944B1/ko not_active IP Right Cessation
- 1986-07-30 CA CA000514920A patent/CA1292824C/en not_active Expired - Fee Related
- 1986-07-30 BR BR8603615A patent/BR8603615A/pt unknown
- 1986-07-30 JP JP61177895A patent/JPH0772225B2/ja not_active Expired - Lifetime
- 1986-07-30 ES ES8600735A patent/ES2001053A6/es not_active Expired
- 1986-07-30 US US06/892,022 patent/US4713137A/en not_active Expired - Fee Related
- 1986-07-30 NO NO863074A patent/NO171414C/no unknown
- 1986-07-31 FI FI863136A patent/FI89807C/fi not_active IP Right Cessation
- 1986-07-31 CN CN86105670A patent/CN1017248B/zh not_active Expired
- 1986-07-31 DK DK364586A patent/DK364586A/da not_active Application Discontinuation
- 1986-07-31 AU AU60748/86A patent/AU593826B2/en not_active Ceased
-
1987
- 1987-09-03 MY MYPI87001533A patent/MY102533A/en unknown
-
1989
- 1989-08-24 US US07/398,337 patent/US4959400A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU593826B2 (en) | 1990-02-22 |
FI863136A (fi) | 1987-02-01 |
DK364586A (da) | 1987-02-01 |
EP0211382B1 (en) | 1994-06-01 |
EP0211382A3 (en) | 1988-08-24 |
AU6074886A (en) | 1987-02-05 |
CA1292824C (en) | 1991-12-03 |
NO171414C (no) | 1993-03-10 |
FI89807B (fi) | 1993-08-13 |
EP0211382A2 (en) | 1987-02-25 |
FI89807C (fi) | 1993-11-25 |
BR8603615A (pt) | 1987-03-10 |
IN167874B (es) | 1991-01-05 |
NO863074L (no) | 1987-02-02 |
GB8519290D0 (en) | 1985-09-04 |
NO171414B (no) | 1992-11-30 |
JPS6270415A (ja) | 1987-03-31 |
US4959400A (en) | 1990-09-25 |
JPH0772225B2 (ja) | 1995-08-02 |
DE3689869D1 (de) | 1994-07-07 |
DE3689869T2 (de) | 1994-11-17 |
DK364586D0 (da) | 1986-07-31 |
KR900001944B1 (ko) | 1990-03-26 |
ATE106435T1 (de) | 1994-06-15 |
FI863136A0 (fi) | 1986-07-31 |
CN86105670A (zh) | 1987-03-25 |
NO863074D0 (no) | 1986-07-30 |
US4713137A (en) | 1987-12-15 |
CN1017248B (zh) | 1992-07-01 |
MY102533A (en) | 1992-07-31 |
KR870001245A (ko) | 1987-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20000601 |