EP0110582B1
Expired / Lapsed
EP
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Flexible thermally stable tapes
Assignee: Westinghouse Electric Corp
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Filing: 1983-11-02
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Granted: 1987-03-11
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Expires: 2003-11-02
Abstract
No abstract record available.
Inventors
- 👤 Wei-Fang Anne Su
- 👤 Frank Anton Sattler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:06
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/30; C; C09; C09J; C09J4/00; C09J4/06; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/323; H01F27/327; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31786; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
189 words
A flexible tape capable of being wrapped around an electrical conductor without cracking, impregnated with a cured impregnating composition characterised in that said composition comprises a blend of: -- (A) from 60 wt% to 90 wt% of an alkyd component consisting essentially of the reaction product of: (i) 48 equivalent % to 55 equivalent % of polyhydric alcohol consisting essentially of: (a) from 40 equivalent % to 100 equivalent % of a triol, and (b) 0 equivalent % to 60 equivalent % of a diol, (ii) 29 equivalent % to 40 equivalent % of a fatty acid having at least one double bond and containing from 12 to 18 carbon atoms per molecule, and (iii) from 8 equivalent % to 20 equivalent % of an organic dibasic acid mixture consisting essentially of: (a) from 10 equivalent % to 50 equivalent % of an unsaturated aliphatic dibasic acid, and (b) from 50 equivalent % to 90 equivalent % of an aromatic dibasic acid, and (B) from 10 wt% to 40 wt% of an alkyl acrylate monomer having a molecular weight of over 110 and a boiling point of over 200°C.
Claim 2
Dependent Claim
189 words
A flexible tape capable of being wrapped around an electrical conductor without cracking, impregnated with a cured impregnating composition characterised in that said composition comprises a blend of: -- (A) from 60 wt% to 90 wt% of an alkyd component consisting essentially of the reaction product of: (i) 48 equivalent % to 55 equivalent % of polyhydric alcohol consisting essentially of: (a) from 40 equivalent % to 100 equivalent % of a triol, and (b) 0 equivalent % to 60 equivalent % of a diol, (ii) 29 equivalent % to 40 equivalent % of a fatty acid having at least one double bond and containing from 12 to 18 carbon atoms per molecule, and (iii) from 8 equivalent % to 20 equivalent % of an organic dibasic acid mixture consisting essentially of: (a) from 10 equivalent % to 50 equivalent % of an unsaturated aliphatic dibasic acid, and (b) from 50 equivalent % to 90 equivalent % of an aromatic dibasic acid, and (B) from 10 wt% to 40 wt% of an alkyl acrylate monomer having a molecular weight of over 110 and a boiling point of over 200°C.
Claim 3
Dependent Claim
31 words
A tape according to claim 1, characterized in that the impregnating composition has a flash point of over 200°C and a viscosity of from 200 cps. to 1,000 cps. at 25°C.
Claim 4
Dependent Claim
31 words
A tape according to claim 1 or 2, characterized in that the tape is impregnated glass cloth characterized as being flexible and having a temperature capablity of about 180°C without degradation.
Claim 5
Dependent Claim
38 words
A tape according to any of claims 1 to 3, characterized in that the polyhydric triol in the impregnating composition is glycerol, trimethylol ethane, trimethylol propane, tris (hydroxy alkyl) isocyanurate, tautomeric analogs of isocyanurate compounds or mixtures thereof.
Claim 6
Dependent Claim
31 words
A tape according to any of claims 1 to 3, characterized in that the diol in the impregnating composition is neopentyl glycol, ethylene glycol, propylene glycol, 1,4-butane diol or mixtures thereof.
Claim 7
Dependent Claim
33 words
A tape according to any of claims 1 to 3, characterized in that the organic, unsaturated aliphatic dibasic acid in the impregnating composition is maleic acid, maleic anhydride, fumaric acid, or mixtures thereof.
Claim 8
Dependent Claim
38 words
A tape according to any of claims 1 to 3, characterized in that the organic aromatic dibasic acid in the impregnating composition is isophthalic acid, phthalic acid, phthalic anhydride, terephthalic acid, dimethyl terephthalate, trimellitic anhydride or mixtures thereof.
Claim 9
Dependent Claim
49 words
A tape according to any of claims 1 to 3, characterized in that the fatty acid in the impregnating composition is soybean oil fatty acid, linseed oil fatty acid, tung oil fatty acid, dehydrated castor oil fatty acid, tall oil fatty acid, perilla oil fatty acid or mixtures thereof.
Claim 10
Dependent Claim
40 words
A tape according to any of claims 1 to 3, characterized in that the alkyl acrylate monomer is hexanediol diacrylate, neopentyl glycol diacrylate, trimethylol propane triacrylate, tetraethylene glycol diacrylate, pentaerythritol triacrylate, 2-ethyl hexyl acrylate, 2-hydroxy ethyl acrylate or mixtures thereof.
Claim 11
Dependent Claim
37 words
- 10. A tape according to any of the preceding claims, characterized in that the impregnating composition contains from 0.02 part to 1.0 part per 100 parts impregnating composition of an accelerator effective as a reaction catalyst.
Claim 12
Dependent Claim
30 words
A tape according to any of the preceding claims, characterized in that the impregnating composition contains from 0.005 part to 0.5 part per 100 parts impregnating composition of an inhibitor.
Claim 13
Dependent Claim
39 words
A tape according to any of the preceding claims, characterized in that the impregnating composition contains from 0.5 part to 6 parts per 100 parts impregnating composition of a photoinitiator effective to initiate and promote polymerization, with ultraviolet exposure.
Claim 14
Dependent Claim
25 words
A tape according to any of the preceding claims, characterized in that the alkyd component has a % oil length of from 60% to 75%.
Claim 15
Dependent Claim
31 words
An insulated electrical coil wrapped with a flexible tape impregnated with a cured impregnating composition characterized in that said composition comprises a blend as claimed in any of the preceding claims.
Claim 16
Dependent Claim
115 words
A high temperature capability, non-aqueous, impregnating composition made of A) an alkyd component consisting essentially of the reaction product of a polyhydric alcohol, a fatty acid and a dibasic organic acid and B) of an alkylacrylate monomer, characterized in that said composition comprises a blend of an alkyd component (A), having a % oil length of from 60% to 75%, consisting essentially of the reaction product of (i) 48 equivalent % to 55 equivalent % of polyhydric alcohol (ii) at least 29 equivalent % of fatty acid, and (iii) from 8 equivalent % to 20% equivalent % of organic dibasic acid, said composition having a viscosity of from 200 cps. to 1,000 cps. at 25°C.
Claim 17
Dependent Claim
115 words
A high temperature capability, non-aqueous, impregnating composition made of A) an alkyd component consisting essentially of the reaction product of a polyhydric alcohol, a fatty acid and a dibasic organic acid and B) of an alkylacrylate monomer, characterized in that said composition comprises a blend of an alkyd component (A), having a % oil length of from 60% to 75%, consisting essentially of the reaction product of (i) 48 equivalent % to 55 equivalent % of polyhydric alcohol (ii) at least 29 equivalent % of fatty acid, and (iii) from 8 equivalent % to 20% equivalent % of organic dibasic acid, said composition having a viscosity of from 200 cps. to 1,000 cps. at 25°C.
Claim 18
Dependent Claim
50 words
A composition according to claim 15, characterized in that the alkyd component comprises from 60 wt% to 90 wt% of the composition, the alkyl acrylate monomer comprises from 10 wt% to 40 wt% of the composition, and the composition has low volatile emissions of from 2% to 8% during coating.
References Cited (Backward Citations)
No citation records indexed.
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