Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A curable polymer composition comprising a polymerisable cyanate ester thermoset component and a polyarylsulphone thermoplast component containing ether- and/or thioether- linked repeating units (PhSO₂Ph) n and (Ph)a where Ph is phenylene, a and n are independently 1 to 2 and may be on average fractional and the phenylenes in (Ph)a are (when a exceeds 1) linked by a single chemical bond.
Claim 2
Dependent Claim
61 words
A curable polymer composition comprising a polymerisable cyanate ester thermoset component and a polyarylsulphone thermoplast component containing ether- and/or thioether- linked repeating units (PhSO₂Ph) n and (Ph)a where Ph is phenylene, a and n are independently 1 to 2 and may be on average fractional and the phenylenes in (Ph)a are (when a exceeds 1) linked by a single chemical bond.
Claim 3
Dependent Claim
44 words
A composition according to claim 1 in which the polyarylsulphone contains the units: I X Ph SO₂ Ph X Ph SO₂ Ph (PES); and II X (Ph) a X Ph SO₂ Ph (PEES) in a ratio of I to II between 10:90 and 55:45.
Claim 4
Dependent Claim
23 words
A composition according to claim 2 in which a=1 and the ratio of I to II is in the range 35:65 to 65:35.
Claim 5
Dependent Claim
20 words
A composition according to any one of the preceding claims in which the polyarylsulphone carries end groups providing active hydrogen.
Claim 6
Dependent Claim
30 words
A composition according to claim 4 in which the polyarylsulphone has NH₂ and/or OH end groups, to the extent of at least 70 mol percent of its total end groups.
Claim 7
Dependent Claim
20 words
A composition according to any one of the preceding claims in which the polyarylsulphone has a molecular weight over 5000.
Claim 8
Dependent Claim
77 words
A composition according to any one of the preceding claims in which the cyanate ester component comprises one or more compounds of the general formula N CO Ar Z Ar O C N, where Ar is a divalent aromatic radical and Z is a single atom linking group selected from the class consisting of O, S, SO, SO₂ and C R₁ R₂ where R₁ and R₂ are hydrocarbon groups containing in all up to 12 carbon atoms.
Claim 9
Dependent Claim
31 words
A composition according to any one of the preceding claims in which the cyanic ester comprises a compound of general formula where m is up to 3 and can be fractional.
Claim 10
Dependent Claim
25 words
A composition according to any one of the preceding claims in which the cyanate ester component is a mixture of a dicyanate monomer and oligomer.
Claim 11
Dependent Claim
14 words
A composition according to any one of the preceding claims which contains reinforcing fibres.
Claim 12
Dependent Claim
48 words
A structure made by curing a composition according to any one of the preceding claims in which the polymer components are combined in a network in which each extends continuously or in which islands of predominantly thermoset resin are dispersed in a continuous phase of predominantly thermoplast polymer.