EP0441159A2
Expired / Lapsed
EP
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Fluoropolymer insulating material containing hollow microspheres
Assignee: Junkosha Co Ltd
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Filing: 1991-01-21
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Granted: —
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Expires: 2011-01-21
Abstract
Abstract An insulating material formed from a network of hollow gas-filled microspheres embedded in a cured three-dimensional cross-linked polymer network of copolymerized unsaturated fluorinated monomers and acrylic monomers reacted in a fluorinated organic solvent.
Inventors
- 👤 Yoshiaki Sato
- 👤 Sakuko Kaneda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 23:04
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; C; C08; C08J; C08J9/00; C08J9/32; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; H05K1/032; H05K1/034; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/015; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2201/0242; H05K2201/0254; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
43 words
A network comprising hollow microspheres in a matrix, said matrix comprising a mixture of: (a) an amorphous fluorinated ring oxygen-containing copolymer coating on and adhering to said microspheres; (b) a fluorinated organic solvent; (c) a fluorinated cross-linkable monomer; and (d) a cross-linking means.
Claim 2
Dependent Claim
8 words
A cross-linked and cured network of Claim 1.
Claim 3
Dependent Claim
20 words
A network of Claim 1 or 2 wherein said amorphous fluorinated oxygen-containing copolymer comprises copolymers of perfluoro-2,2-dimethyl-1,3-dioxle with fluorinated olefins.
Claim 4
Dependent Claim
36 words
A network of claim 1, 2 or 3 wherein said fluorinated cross-linkable monomer is selected from the group consisting of fluoroolefins, fluorovinyl ethers, fluoroethylene, perfluoromethyl vinyl ether, perfluoropropyl vinyl ether, vinylidene fluoride, vinyl fluoride, and trichlorofluorethylene.
Claim 5
Dependent Claim
26 words
A network according to at least one of claims 1-4 wherein said fluorinated organic solvent is selected from the group consisting essentially of perfluorobenzene a perfluoro(2-butyltetrahydrofuran).
Claim 6
Dependent Claim
61 words
A network according to at least one of claims 1-5 containing additionally a cross-linkable acrylic monomer selected from the group consisting essentially of acrylic acid, acrylic acid esters, methacrylic acid ester, 2-hydroxyethyl acylate, 2-hydroxypropyl acrylate, isobutyl acrylate, t-butyl acrylate, stearl acrylate, tetrahydrofurfural acrylate, 2-methoxyethyl acrylate, ethoxyethoxyethyl acrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, 2-methoxypropylene glycol acrylate, fluorinated alkyl acrylates, and fluorinated alkyl methacrylates.
Claim 7
Dependent Claim
33 words
A network according to at least one of claims 1-6 wherein the hollow microspheres comprise glass, ceramic material, plastic or glass containing silicon dioxide in the amount of at least 80 weight percent.
Claim 8
Dependent Claim
27 words
A network of Claim 7 wherein said hollow microspheres have a particle diameter of from about 1 to about 300 micrometers, preferably about 20 micrometers or less.
Claim 9
Dependent Claim
14 words
A network of Claim 7 or 8 wherein said hollow microspheres contain a gas.
Claim 10
Dependent Claim
13 words
A network of Claim 9 where said gas is nitrogen or carbon dioxide.
Claim 11
Dependent Claim
30 words
A network according to at least one of claims 1-10 wherein the cross-linking means is selected from the group radiant energy, ultraviolet light, free radical polymization agents, benzoin, benzoin ethers.
References Cited (Backward Citations)
No citation records indexed.
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