EP0235885A1
Expired / Lapsed
EP
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Polymer composition
Assignee: Cessione ici Composites Inc
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Filing: 1987-01-15
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Granted: —
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Expires: 2007-01-15
Abstract
Abstract A polymer composition comprises : component a) which is at least one aromatic polysulphone, containing the repeating units - Ph - SO₂ - Ph - Ph - SO₂ - Ph - I and - Ar - II (where Ph is phenylene and Ar is a divalent aromatic radical) linked together through ether linkages, in a relative molar proportion of the units I : II in the range 25 : 75 to 60 : 40; and component b) which is 5 to 80% by weight of a fibrous reinforcing agent calculated on the total of a) and b). Preferably Ph is para-phenylene and - Ar - is - Ph SO₂ Ph -. The composition is specifically an anisotropic or quasi-isotropic laminate in which the reinforcing agent is continuous carbon fibre.
Inventors
- 👤 Fredric Neil Cogswell
- 👤 Michael Kenneth Cox
- 👤 David Colin Leach
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/06; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/042; C08L71/00; C08J2381/00; C08J2381/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A polymer composition comprising component a) which is at least one an aromatic polysulphone, containing the repeating units - Ph - SO₂ - Ph - Ph - SO₂ - Ph - I and - Ar - II where Ph is a phenylene; and Ar is a divalent aromatic radical linked together through ether linkages, in a relative molar proportion I : II in the range 25 : 75 to 60 : 40; and component b) which is 5 to 80% by weight of a fibrous reinforcing agent, calculated on the total of a) and b).
Claim 2
Dependent Claim
95 words
A polymer composition comprising component a) which is at least one an aromatic polysulphone, containing the repeating units - Ph - SO₂ - Ph - Ph - SO₂ - Ph - I and - Ar - II where Ph is a phenylene; and Ar is a divalent aromatic radical linked together through ether linkages, in a relative molar proportion I : II in the range 25 : 75 to 60 : 40; and component b) which is 5 to 80% by weight of a fibrous reinforcing agent, calculated on the total of a) and b).
Claim 3
Dependent Claim
62 words
A composition as claimed in claim 1 in which Ar is a divalent mono- or poly- radical or a group - Ar¹ - Z - Ar¹ - in which each Ar¹, which may be the same or different, is a divalent aromatic hydrocarbon radical; and Z is selected from - SO -, -SO₂ -, - CO - and divalent aliphatic hydrocarbon radicals.
Claim 4
Dependent Claim
40 words
A composition as claimed in claim 2 in which component a) contains units - Ph¹ - SO₂ - Ph¹ - Ph¹ - SO₂ - Ph¹ - IA and - Ph¹ - SO₂ - Ph¹ - IIA where Ph¹ is para-phenylene.
Claim 5
Dependent Claim
86 words
A composition as claimed in any one of claims 1 to 3 in which component a) is a single polysulphone; or is mixture of polysulphones each having a different unit II ; or is a mixture of two polysulphones one of which contains only units II and the other contains both units I and II; or is a mixture in which at least one polymer contains units I and II in the relative molar proportions I : II of 25 : 75 to 60 : 40.
Claim 6
Dependent Claim
35 words
A composition as claimed in any one of claims 1 to 4 in which the polysulphone or mixture has a reduced viscosity in the range 0.05 to 2.0, preferably in the range 0.2 to 1.0.
Claim 7
Dependent Claim
26 words
A composition as claimed in any one of claims 1 to 5 in which the range of proportion of the two units is 25:75 to 50:50.
Claim 8
Dependent Claim
50 words
A composition as claimed in any one of claims 1 to 6 comprising polysulphone containing the repeating units - Ph¹ - SO₂ - Ph¹ - Ph¹ - SO₂ - Ph¹ - IA and - Ph¹ - SO₂ - Ph¹ - IIA in essentially equimolar properties and essentially continuous carbon fibre.
Claim 9
Dependent Claim
16 words
A laminate formed from a composition as claimed in any one of claims 1 to 7.
Claim 10
Dependent Claim
117 words
A process for the production of a composition which comprises mixing a) a polysulphone or mixture containing the repeating units - Ph - SO₂ - Ph - Ph - SO₂ - Ph - I and - Ar - II where Ph is phenylene; and Ar is a divalent aromatic radical linked together through ether linkages, in the relative molar proportions of units I : units II, in the range from 25 : 75 to 60 : 40; with b) 5 to 80% by weight of fibrous reinforcing agent, calculated on the total of a) and b), by passing a continuous fibrous reinforcing agent into contact with a melt formed from at least one polysulphone or mixture. mixture.
Claim 11
Dependent Claim
117 words
A process for the production of a composition which comprises mixing a) a polysulphone or mixture containing the repeating units - Ph - SO₂ - Ph - Ph - SO₂ - Ph - I and - Ar - II where Ph is phenylene; and Ar is a divalent aromatic radical linked together through ether linkages, in the relative molar proportions of units I : units II, in the range from 25 : 75 to 60 : 40; with b) 5 to 80% by weight of fibrous reinforcing agent, calculated on the total of a) and b), by passing a continuous fibrous reinforcing agent into contact with a melt formed from at least one polysulphone or mixture. mixture.
Claim 12
Dependent Claim
30 words
A process as claimed in claim 9 which comprises laminating the composition in the form of impregnated fibres to other impregnated fibres thereof by the application of heat and pressure.
References Cited (Backward Citations)
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