Patent EP0441047A2 successfully refreshed from Google Patents.
EP0441047A2
Expired / Lapsed
EP
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Thermosettable composition
Assignee: 3M Co
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Filing: 1990-12-18
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Granted: —
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Expires: 2010-12-18
Abstract
Abstract A thermosettable resin composition having a viscosity that decreases during processing temperatures and increases as the temperature is raised to curing temperatures is provided. The composition comprises thermosettable resins and thermoplastic particles that are insoluble in the thermosettable resins at processing temperatures but soluble in the thermosettable resins at curing temperatures. Prepregs prepared from the thermosettable resin composition are also provided.
Inventors
- 👤 Gene B. C/O Minnesota Mining And Portelli
- 👤 William J. C/O Minnesota Mining And Schultz
- 👤 John T. C/O Minnesota Mining And Boden
- 👤 Daniel M. C/O Minnesota Mining And Kaufer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:38
CPC Classifications
C; C08; C08L; C08L63/00; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243; C08J5/249; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/0025; C08L101/00; C08L2312/00; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; H05K3/00; H05K3/22; H05K3/28; H05K3/285; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31525; Y10T428/31529; Y10T428/31551; Y10T428/31565; Y10T428/31573; Y10T428/31598; Y10T428/31605; Y10T428/31678; Y10T428/31681; Y10T428/31721; Y10T428/31725; Y10T428/31736; Y10T428/31739; Y10T428/31743; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2656; Y10T442/2738; Y10T442/2861; Y10T442/2893; Y10T442/2926; Y10T442/2951; Y10T442/2975; Y10T442/2984; Y10T442/2992; Y10T442/60; Y10T442/699
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
A thermosettable resin composition comprising: a) a thermosettable mixture that is liquid at a temperature in the range of 20 to 100°C comprising one or more thermosettable resins and one or more of curatives, hardeners, and catalysts for the thermosettable resins and b) resin particles of one or more amorphous thermoplastic polymers, the particles having a dissolution temperature of 50°C or higher and being essentially insoluble in the thermosettable resin at temperatures up to 15°C below the dissolution temperature; said resin composition having a viscosity that decreases with increasing temperature up to a dissolution temperature and that increases with increasing temperatures at temperatures above the dissolution temperature.
Claim 2
Dependent Claim
25 words
The composition according to claim 1 wherein said thermosettable resin is at least one of aromatic epoxy, cycloaliphatic epoxy, N,N'-bismaleimide, and polycyanate monomers and prepolymers.
Claim 3
Dependent Claim
30 words
The composition according to claims 1 and 2 wherein said resin particles are at least one of polyesters, polyethers, polycarbonates, polyamides, polyimides, polyetherimides, and polyamideimides, polyarylates, polysulfones, polyarylsulfones, and polyethersulfones.
Claim 4
Dependent Claim
24 words
The composition according to claims 1 to 3 wherein said resin particles have an average diameter in the range of 0.5 to 50 micrometers.
Claim 5
Dependent Claim
46 words
The composition according to claims 1 to 4 wherein said curative is an amine, an amide, an organic acid or anhydride, or a polyphenol, and wherein said catalyst is selected from organometallic compounds or salts, Lewis acids or bases, imidazoles, tertiary amines, and complexed Lewis acids.
Claim 6
Dependent Claim
20 words
The composition according to claims 1 to 5 wherein said resin particles further comprise an effective amount of a plasticizer.
Claim 7
Dependent Claim
23 words
The composition according to claims 1 to 6 wherein said resin particles comprise 2 to 50 parts per 100 parts of thermosettable mixture.
Claim 8
Dependent Claim
27 words
The composition according to claims 1 to 7 further comprising an effective amount of at least one of inert fillers, tougheners, whiskers, pigments, dyes, and flame retardants.
Claim 9
Dependent Claim
14 words
A prepreg comprising reinforcing filaments and the composition according to claims 1 to 8.
Claim 10
Dependent Claim
21 words
An article comprising a woven or nonwoven web, film, or foil coated with the composition according to claims 1 to 9.
References Cited (Backward Citations)
No citation records indexed.
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