GB597218A - Improvements in or relating to resinous electrically insulating compositions and to electrical apparatus impregnated therewith - Google Patents

Improvements in or relating to resinous electrically insulating compositions and to electrical apparatus impregnated therewith

Info

Publication number
GB597218A
GB597218A GB15860/44A GB1586044A GB597218A GB 597218 A GB597218 A GB 597218A GB 15860/44 A GB15860/44 A GB 15860/44A GB 1586044 A GB1586044 A GB 1586044A GB 597218 A GB597218 A GB 597218A
Authority
GB
United Kingdom
Prior art keywords
weight
parts
dicarboxylic acid
reaction product
unsaturated
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
Application number
GB15860/44A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB597218A publication Critical patent/GB597218A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Organic Insulating Materials (AREA)

Abstract

A polymerizable composition comprises a solvent composed of from 10 to 300 parts by weight of a liquid vinyl or vinylidene monomer and 100 parts by weight of a half ester of castor oil or castor oil derivatives and an unsaturated alpha-beta dicarboxylic acid. It is preferred that the half-ester comprises from 2 to 4 parts by weight of castor oil or castor oil derivatives and one part by weight of an unsaturated dicarboxylic acid and that the free carboxyl group be esterified with an aliphatic alcohol. The vinyl monomer may be styrene, vinyl acetate or methyl methacrylate. Specified unsaturated dicarboxylic acids are maleic acid and anhydride. The composition may also contain 300 to 400 parts by weight of the reaction product of tung oil or oiticica oil and an unsaturated alpha-beta dicarboxylic acid, and/or up to 100 parts by weight of the reaction product of a polyhydric alcohol, an unsaturated alpha-beta dicarboxylic acid and a saturated dibasic organic acid having from 6 to 10 carbon atoms in the aliphatic chain. When this second addition is present, a further amount of from 10 to 30 parts of the solvent liquid monomer is also added. The reaction product may comprise 100 parts by weight of tung oil or oiticica oil and from 20 to 25 parts by weight of the unsaturated alpha-beta dicarboxylic acid and from 20 to 100 parts by weight of the reaction product of equimolar quantities of a polyhydric alcohol and dicarboxylic acids at least 50 per cent of the dicarboxylic acids having from 6 to 10 carbon atoms in the aliphatic chain. The mixtures may be stabilized by the addition of 0.02 per cent of an antioxidant such as hydroquinone. A catalyst such as benzoyl peroxide is added and the liquid polymerized by heat.
GB15860/44A 1941-11-07 1944-08-18 Improvements in or relating to resinous electrically insulating compositions and to electrical apparatus impregnated therewith Expired GB597218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US597218XA 1941-11-07 1941-11-07

Publications (1)

Publication Number Publication Date
GB597218A true GB597218A (en) 1948-01-21

Family

ID=22024826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15860/44A Expired GB597218A (en) 1941-11-07 1944-08-18 Improvements in or relating to resinous electrically insulating compositions and to electrical apparatus impregnated therewith

Country Status (1)

Country Link
GB (1) GB597218A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646535A (en) * 1949-09-28 1953-07-21 Gen Electric Electrical coil
US2684317A (en) * 1950-10-09 1954-07-20 Sprague Electric Co Method of making a resinimpregnated capacitor
WO1979000490A1 (en) * 1978-01-10 1979-07-26 Createc Sa Process for production of a wound magnetic circuit;wound magnetic circuit resulting from this process;devices for carrying out the process
WO2004109724A1 (en) 2003-06-11 2004-12-16 Light Engineering, Inc. Soft-metal electromechanical component and method making same
US7018498B2 (en) 2003-06-11 2006-03-28 Light Engineering, Inc. Product and method for making a three dimensional amorphous metal mass
US7596856B2 (en) 2003-06-11 2009-10-06 Light Engineering, Inc. Method for manufacturing a soft magnetic metal electromagnetic component
CN112735800A (en) * 2020-12-15 2021-04-30 杭州永磁集团振泽磁业有限公司 Safe, environment-friendly and anti-oxidation preparation method of neodymium iron boron

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646535A (en) * 1949-09-28 1953-07-21 Gen Electric Electrical coil
US2684317A (en) * 1950-10-09 1954-07-20 Sprague Electric Co Method of making a resinimpregnated capacitor
WO1979000490A1 (en) * 1978-01-10 1979-07-26 Createc Sa Process for production of a wound magnetic circuit;wound magnetic circuit resulting from this process;devices for carrying out the process
WO2004109724A1 (en) 2003-06-11 2004-12-16 Light Engineering, Inc. Soft-metal electromechanical component and method making same
US7018498B2 (en) 2003-06-11 2006-03-28 Light Engineering, Inc. Product and method for making a three dimensional amorphous metal mass
US7258759B2 (en) 2003-06-11 2007-08-21 Light Engineering, Inc. Soft magnetic amorphous electromechanical component and method making the same
KR100830621B1 (en) 2003-06-11 2008-05-21 라이트 엔지니어링 인코포레이티드 Soft-metal electromechanical component and method making same
US7395596B2 (en) 2003-06-11 2008-07-08 Light Engineering Inc. Process of manufacturing a soft magnetic metal electromechanical component
US7596856B2 (en) 2003-06-11 2009-10-06 Light Engineering, Inc. Method for manufacturing a soft magnetic metal electromagnetic component
AU2004246416B2 (en) * 2003-06-11 2010-08-26 Light Engineering, Inc. Soft-metal electromechanical component and method making same
CN1839451B (en) * 2003-06-11 2011-05-25 莱特工程公司 Method for making soft magnetic amorphous electromagnetic component
US8984742B2 (en) 2003-06-11 2015-03-24 Light Engineering, Inc. Method of making soft magnetic amorphous metal electromechanical component
CN112735800A (en) * 2020-12-15 2021-04-30 杭州永磁集团振泽磁业有限公司 Safe, environment-friendly and anti-oxidation preparation method of neodymium iron boron

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