EP0326311A1
Expired / Lapsed
EP
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Fiber reinforced composites with improved glass transition temperatures
Assignee: 3M Co
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Filing: 1989-01-24
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Granted: —
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Expires: 2009-01-24
Abstract
Abstract A fiber reinforced composite structure having a glass transition temperature greater than 150°C is comprised of: a) reinforcing fiber and b) a curable epoxy resin composition comprising (i) one or more epoxides having more than one epoxide group per molecule, of which epoxides at least 10 percent by weight is a 9,9-bis[4-(2,3-epoxypropoxy)phenyl]fluorene, all of the fluorene epoxy present being free of ortho substitution; (ii) an effective amount of one or more epoxy curing agents.
Inventors
- 👤 Robert C. C/O Minnesota Mining And Jordan
- 👤 Gene B. C/O Minnesota Mining And Portelli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 05:24
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/24; C08G59/245; C08G59/32; C08G59/38; C08J2363/00; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
A fiber reinforced composite structure having a glass transition temperature greater than 150°C comprised of: a) reinforcing fibers which optionally are metal coated, and b) a curable epoxy resin composition comprising (i) one or more epoxides having more than one epoxide group per molecule, of which epoxides at least 10 percent by weight is a 9,9-bis[4-(2,3-epoxypropoxy)phenyl]fluorene which optionally is substituted by at least one halogen atom, all of the fluorene epoxy present being free of ortho substitution; (ii) an effective amount of one or more epoxy curing agents is selected from the group consisting of polybasic carboxylic acids and their anhydrides; blocked derivatives of Lewis acids and bases; aliphatic, cycloaliphatic, and aromatic amines; carboxylic acid amides; and melamines; said compositon being free of fluorene-containing amine curing agents.
Claim 2
Dependent Claim
127 words
A fiber reinforced composite structure having a glass transition temperature greater than 150°C comprised of: a) reinforcing fibers which optionally are metal coated, and b) a curable epoxy resin composition comprising (i) one or more epoxides having more than one epoxide group per molecule, of which epoxides at least 10 percent by weight is a 9,9-bis[4-(2,3-epoxypropoxy)phenyl]fluorene which optionally is substituted by at least one halogen atom, all of the fluorene epoxy present being free of ortho substitution; (ii) an effective amount of one or more epoxy curing agents is selected from the group consisting of polybasic carboxylic acids and their anhydrides; blocked derivatives of Lewis acids and bases; aliphatic, cycloaliphatic, and aromatic amines; carboxylic acid amides; and melamines; said compositon being free of fluorene-containing amine curing agents.
Claim 3
Dependent Claim
44 words
The composite structure of claim 1 wherein said epoxy resin composition further comprises at least one adjuvant selected from the class consisting of thixotropic agents, pigments, fillers, thermoplastic polymers, and rubbery heterophases, these adjuvants being present in an amount sufficient for their intended purposes.
Claim 4
Dependent Claim
28 words
The composite structure of claims 1 and 2 wherein the 9,9-bis[4-(2,3-epoxypropoxy)phenyl]fluorene has the structural formula wherein n is a number having a value of 0 to 3 and
Claim 5
Dependent Claim
20 words
R is a divalent organic group having the structural formula wherein each R¹ is independently hydrogen, halogen, or lower alkyl.
Claim 6
Dependent Claim
20 words
R is a divalent organic group having the structural formula wherein each R¹ is independently hydrogen, halogen, or lower alkyl.
Claim 7
Dependent Claim
48 words
The composite structure according to claims 1 to 3 wherein said epoxide having more than one epoxide group per molecule is selected from the group consisting of polyglycidyl ethers of aliphatic polyols, cycloaliphatic polyepoxides, polyglycidyl ethers of polyhydric phenols and their halogenation products, and polyglycidyl ethers of novolacs.
Claim 8
Dependent Claim
46 words
The composite structure according to claims 1 to 4 wherein said non fluorene-containing epoxide having more than one epoxide group is selected from the group consisting of di- and polyglycidyl derivatives of aromatic amines, polyglycidyl derivatives of aromatic aminophenols, and glycidyl esters of aromatic polycarboxylic acids.
Claim 9
Dependent Claim
30 words
The composite structure according to claims 1 to 5 wherein said reinforcing fiber is selected from the class consisting of glass fibers, non-siliceous fibers, ceramic fibers, and synthetic organic fibers.
Claim 10
Dependent Claim
44 words
The composite structure according to claims 1 to 5 wherein said reinforcing fiber is selected from the class consisting of glass fibers, carbon fibers, graphite fibers, silicon carbide fibers, boron fibers, polyester fibers, polyamide fibers, ceramic fibers, rayon fibers, polybenzimidazole fibers, and polybenzothiazole fibers.
Claim 11
Dependent Claim
23 words
The composite structure according to claims 1 to 5 wherein said metal coated fiber is at least one of nickeland silver-coated graphite fiber.
Claim 12
Dependent Claim
17 words
The composite structure of claims 1 to 8 wherein the epoxy curing agent is an aromatic amine.
Claim 13
Dependent Claim
17 words
The composite structure according to claims 1 to 9 wherein the epoxy resin composition has been cured.
Claim 14
Dependent Claim
13 words
A printed wiring board comprising the cured composite structure according to claim 10.
References Cited (Backward Citations)
US4684678A
Cited
EP0274209A1
Cited
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