EP0217657A2
Expired / Lapsed
EP
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Low-viscosity epoxy resin, resin composition containing it, and fibre-reinforced composite material containing cured product of the composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1986-09-29
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Granted: —
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Expires: 2006-09-29
Abstract
Abstract A low viscosity epoxy resin is a low viscosity polyglycidyl derivative of an aminophenol having at least one alkyl group on its aromatic ring suitably having a viscosity of not more than 15 poises as measured at 25°C. The invention provides resin compositions containing the resin and a curing agent thereof, and fibre-reinforced composite material containing as matrix a cured product of the epoxy resin composition optionally also containing further polyglycidyl material.
Inventors
- 👤 Yasuhisa Saito
- 👤 Katsuya Watanabe
- 👤 Kohichi Okuno
- 👤 Kunimasa Kamio
- 👤 Akira Morii
- 👤 Hiroshi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 11:57
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3227; C08G59/40; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243; C08J5/249; C08L; C08L63/00; C08J2363/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
32 words
A low-viscosity polyglycidyl derivative of an aminophenol having at least on alkyl substituent on its aromatic ring, the viscosity of the polyglycidyl derivative being 15 poises (1.5 Pa.s) or less at 25°C.
Claim 2
Dependent Claim
32 words
A low-viscosity polyglycidyl derivative of an aminophenol having at least on alkyl substituent on its aromatic ring, the viscosity of the polyglycidyl derivative being 15 poises (1.5 Pa.s) or less at 25°C.
Claim 3
Dependent Claim
22 words
A low-viscosity polyglycidyl derivative as claimed in claim 1 characterized in that the aminophenol is 4-amino- m -cresol or 4-amino- o -cresol.
Claim 4
Dependent Claim
29 words
An epoxy resin composition which comprises a low-viscosity polyglycidyl derivative of an aminophenol having at least one alkyl substituent on its aromatic ring together with a curing agent therefor.
Claim 5
Dependent Claim
29 words
An epoxy resin composition which comprises a low-viscosity polyglycidyl derivative of an aminophenol having at least one alkyl substituent on its aromatic ring together with a curing agent therefor.
Claim 6
Dependent Claim
35 words
An epoxy resin composition as claimed in claim 3, in which the polyglycidyl derivative has a viscosity of 100 poises (10 Pa.s) or less at 25°C, preferably 50 poises (5 Pa.s) or less at 25°C.
Claim 7
Dependent Claim
26 words
An epoxy resin composition as claimed in claim 4, in which the polyglycidyl derivative has a viscosity of 15 poises (1.5 Pa.s) or less at 25°C.
Claim 8
Dependent Claim
40 words
A fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring together with a curing agent therefor.
Claim 9
Dependent Claim
40 words
A fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring together with a curing agent therefor.
Claim 10
Dependent Claim
54 words
A heat-resistant fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising: (A) a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring and/or a condensate thereof, (B) N,N,N' ,N'-tetraglycidylbis(aminophenyl)-methane and/or a condensation product thereof, and (C) an epoxy curing agent.
Claim 11
Dependent Claim
54 words
A heat-resistant fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising: (A) a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring and/or a condensate thereof, (B) N,N,N' ,N'-tetraglycidylbis(aminophenyl)-methane and/or a condensation product thereof, and (C) an epoxy curing agent.
Claim 12
Dependent Claim
21 words
A composite material as claimed in claim 7 in which the curing agent is a diaminodiphenylsulphone compound and/or a diaminodiphenylmethane compound.
Claim 13
Dependent Claim
61 words
A fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising (A) a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring, (B) a phenol novolac type epoxy resin, cresol novolac type epoxy resin and/or Bisphenol A diglycidyl ether type epoxy resin, and (C) an epoxy curing agent.
Claim 14
Dependent Claim
61 words
A fibre-reinforced composite material which comprises, as matrix, a cured product of an epoxy resin composition comprising (A) a polyglycidyl derivative of an aminophenol compound having at least one alkyl substituent on its aromatic ring, (B) a phenol novolac type epoxy resin, cresol novolac type epoxy resin and/or Bisphenol A diglycidyl ether type epoxy resin, and (C) an epoxy curing agent.
Claim 15
Dependent Claim
16 words
A composite material as claimed in claim 9 in which the epoxy curing agent is dicyandiamide.
Claim 16
Dependent Claim
26 words
A composite material as claimed in any one of claims 6 - 10 in which the aminophenol compound is 4-amino- m -cresol and/or 4-amino- o -cresol.
References Cited (Backward Citations)
No citation records indexed.
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