GB1465126A - Capacitor and dielectric impregnant composition - Google Patents
Capacitor and dielectric impregnant compositionInfo
- Publication number
- GB1465126A GB1465126A GB4753474A GB4753474A GB1465126A GB 1465126 A GB1465126 A GB 1465126A GB 4753474 A GB4753474 A GB 4753474A GB 4753474 A GB4753474 A GB 4753474A GB 1465126 A GB1465126 A GB 1465126A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- nov
- iii
- carbon atoms
- substituted
- 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
- 239000003990 capacitor Substances 0.000 title 1
- 125000000217 alkyl group Chemical group 0.000 abstract 4
- -1 alkyl naphthalene Chemical compound 0.000 abstract 4
- 125000004432 carbon atom Chemical group C* 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 125000001624 naphthyl group Chemical group 0.000 abstract 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 2
- ZSQCNVWYBBKUHS-UHFFFAOYSA-N (2,3-dimethylphenyl)-phenylmethanone Chemical compound CC1=CC=CC(C(=O)C=2C=CC=CC=2)=C1C ZSQCNVWYBBKUHS-UHFFFAOYSA-N 0.000 abstract 1
- HKTCLPBBJDIBGF-UHFFFAOYSA-N 1-phenyl-2-propan-2-ylbenzene Chemical group CC(C)C1=CC=CC=C1C1=CC=CC=C1 HKTCLPBBJDIBGF-UHFFFAOYSA-N 0.000 abstract 1
- YXALYBMHAYZKAP-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]heptan-4-ylmethyl 7-oxabicyclo[4.1.0]heptane-4-carboxylate Chemical compound C1CC2OC2CC1C(=O)OCC1CC2OC2CC1 YXALYBMHAYZKAP-UHFFFAOYSA-N 0.000 abstract 1
- 125000003342 alkenyl group Chemical group 0.000 abstract 1
- 125000004183 alkoxy alkyl group Chemical group 0.000 abstract 1
- 150000004996 alkyl benzenes Chemical class 0.000 abstract 1
- 235000010290 biphenyl Nutrition 0.000 abstract 1
- 239000004305 biphenyl Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 150000003997 cyclic ketones Chemical class 0.000 abstract 1
- 125000000753 cycloalkyl group Chemical group 0.000 abstract 1
- 150000001987 diarylethers Chemical class 0.000 abstract 1
- 150000002118 epoxides Chemical class 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract 1
- 125000005359 phenoxyalkyl group Chemical group 0.000 abstract 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 abstract 1
- 229920006389 polyphenyl polymer Polymers 0.000 abstract 1
- 125000004076 pyridyl group Chemical group 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 125000001544 thienyl group Chemical group 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
- H01G4/221—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/022—Well-defined aliphatic compounds saturated
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/024—Well-defined aliphatic compounds unsaturated
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/042—Epoxides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/08—Aldehydes; Ketones
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/16—Naphthenic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/284—Esters of aromatic monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/285—Esters of aromatic polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/286—Esters of polymerised unsaturated acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/34—Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/17—Electric or magnetic purposes for electric contacts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Organic Insulating Materials (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Lubricants (AREA)
Abstract
1465126 Dielectric composition MONSANTO CO 4 Nov 1974 [5 Nov 1973] 47534/74 Heading C5F [Also in Division H1] A liquid dielectric composition comprises (i) at least one ketone having a boiling point greater than 150 C. and having the structure wherein R 1 and R 2 have a combined carbon atom content of less than 20 and are individually alkyl, alkoxyalkyl, phenoxyalkyl, cycloalkyl, alkenyl, phenyl, thienyl, pyridyl, naphthyl, substituted phenyl or substituted naphthyl where each substituted aromatic radical contains no more than 18 carbon atoms; R 1 and R 2 can further be part of the same moiety in a cyclic ketone wherein R 1 and R 2 together provide 4 or more contiguous carbon atoms; R 3 and R 4 are each H or C 1 -C 8 alkyl; n is 0 or 1 and m is 0 or 1-6 provided that if n and m are both 1 then neither R 3 and R 4 can be H; and (ii) 0À001-8 wt. per cent of an epoxide stabilizer. The composition may also contain (iii) an ester of a carboxylic acid, or alkyl benzene, alkyl naphthalene, alkyl biphenyl, alkyl polyphenyl, an alkaryl ether, a diaryl alkane, diaryl ether or alkyl derivatives thereof. A preferred composition comprises (i) dimethyl benzophenone, (ii) 3,4 epoxycyclohexylmethyl- 3,4 - epoxycyclohexane carboxylate and (iii) isopropylbiphenyl.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41293973A | 1973-11-05 | 1973-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1465126A true GB1465126A (en) | 1977-02-23 |
Family
ID=23635088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4753474A Expired GB1465126A (en) | 1973-11-05 | 1974-11-04 | Capacitor and dielectric impregnant composition |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5074800A (en) |
| AR (1) | AR203864A1 (en) |
| AU (1) | AU7500374A (en) |
| BE (1) | BE821826A (en) |
| BR (1) | BR7409218A (en) |
| DE (1) | DE2452213A1 (en) |
| ES (1) | ES431597A1 (en) |
| FI (1) | FI321774A (en) |
| FR (1) | FR2250188B3 (en) |
| GB (1) | GB1465126A (en) |
| IN (1) | IN140267B (en) |
| IT (1) | IT1025400B (en) |
| NL (1) | NL7414281A (en) |
| SE (1) | SE391602B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065785A2 (en) * | 2007-11-21 | 2009-05-28 | Nematel Gmbh & Co. Kg | Lubricant |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054937A (en) * | 1976-04-28 | 1977-10-18 | Westinghouse Electric Corporation | Capacitor |
| US4420791A (en) * | 1981-12-28 | 1983-12-13 | Emhart Industries, Inc. | Dielectric fluid |
| US4538206A (en) * | 1984-05-31 | 1985-08-27 | Emhart Industries, Inc. | Dielectric fluid for a capacitor |
| DE3809934A1 (en) * | 1988-03-24 | 1989-10-05 | Bayer Ag | DIELECTRIC LIQUIDS |
-
1974
- 1974-10-31 IT IT29059/74A patent/IT1025400B/en active
- 1974-11-01 NL NL7414281A patent/NL7414281A/en unknown
- 1974-11-02 JP JP49126122A patent/JPS5074800A/ja active Pending
- 1974-11-02 ES ES431597A patent/ES431597A1/en not_active Expired
- 1974-11-04 FR FR7436613A patent/FR2250188B3/fr not_active Expired
- 1974-11-04 DE DE19742452213 patent/DE2452213A1/en active Pending
- 1974-11-04 SE SE7413808A patent/SE391602B/en unknown
- 1974-11-04 FI FI3217/74A patent/FI321774A/fi unknown
- 1974-11-04 AR AR256374A patent/AR203864A1/en active
- 1974-11-04 IN IN2417/CAL/74A patent/IN140267B/en unknown
- 1974-11-04 BR BR9218/74A patent/BR7409218A/en unknown
- 1974-11-04 AU AU75003/74A patent/AU7500374A/en not_active Expired
- 1974-11-04 BE BE150188A patent/BE821826A/en unknown
- 1974-11-04 GB GB4753474A patent/GB1465126A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065785A2 (en) * | 2007-11-21 | 2009-05-28 | Nematel Gmbh & Co. Kg | Lubricant |
| WO2009065785A3 (en) * | 2007-11-21 | 2009-11-12 | Nematel Gmbh & Co. Kg | Lubricant |
Also Published As
| Publication number | Publication date |
|---|---|
| ES431597A1 (en) | 1976-11-01 |
| AR203864A1 (en) | 1975-10-31 |
| BR7409218A (en) | 1976-05-11 |
| JPS5074800A (en) | 1975-06-19 |
| FR2250188A1 (en) | 1975-05-30 |
| IN140267B (en) | 1976-10-09 |
| FI321774A (en) | 1975-05-06 |
| FR2250188B3 (en) | 1977-08-05 |
| IT1025400B (en) | 1978-08-10 |
| DE2452213A1 (en) | 1975-05-07 |
| SE391602B (en) | 1977-02-21 |
| AU7500374A (en) | 1976-05-06 |
| NL7414281A (en) | 1975-05-07 |
| BE821826A (en) | 1975-05-05 |
| SE7413808L (en) | 1975-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1442100A (en) | Hydroxybenzylmalonic acid derivatives and their use as stabilisers for synthetic polymers | |
| ES460828A1 (en) | Product containing alumina trihydrate and a source of B{HD 2{B O{HD 3 {B and method | |
| GB1520141A (en) | Oil impregnated electric device | |
| GB1465126A (en) | Capacitor and dielectric impregnant composition | |
| FR2233684A1 (en) | Epoxide- stabilised aliphatic acid esters - used as dielectric impregnating liquids pref.in electrical condensers | |
| GB1437840A (en) | ||
| GB1217222A (en) | New esters, and their use as resin stabilizers | |
| SE7706794L (en) | IMPREGNANT COMPOSITION | |
| GB1421090A (en) | Capacitor and dielectric impregnant composition therefor | |
| ES8101528A1 (en) | Dielectric liquids, manufacturing process and uses. | |
| IE40739B1 (en) | Phenolic diester derivatives | |
| GB882815A (en) | Electrical capacitor | |
| GB1452649A (en) | Phenolic derivatives of polycyclic imides | |
| GB1441803A (en) | Electrical capacitors containing stabilized ester impregnant | |
| GB1383133A (en) | Fluids and capacitors impregnated therewith | |
| GB8714291D0 (en) | Insulating liquids & electric cables | |
| GB1325496A (en) | Stabilization of organic materials | |
| GB1528793A (en) | Electrical capacitors | |
| JPS5521429A (en) | Liquid crystal composition | |
| GB1420438A (en) | Isopropyl dichlorodiphenyls as dielectric liquids in the impregnation of conventional paper polyolefin and polyolefin/ paper condensers | |
| GB1200540A (en) | Novel compositions based on polypropylene | |
| GB1155680A (en) | Electrical Capacitors | |
| GB934720A (en) | ||
| ES351413A1 (en) | 1-(pyridyl-2')-3-(methyl or ethyl)-3-methyl-1,2,3,4 - tetrahydro-isoquinolines and salts thereof | |
| GB1215310A (en) | Substituted furfuryl esters of chrysanthemumic acid and their use as insecticides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |