Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
315 words
A process for preparing a polyarylene sulphide which consists essentially of reacting (a) dihalogenobenzene consisting of 50 to 100 mol % of a compound of the formula ##STR6## or a compound of the formula ##STR7## or a mixture thereof and 0 to 50 mol % of a compound of the formula ##STR8## wherein X is halogen and each R is selected from the group consisting of hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, alkaryl having 7 to 24 carbon atoms and aralkyl having 7 to 24 carbon atoms or two of said R groups are selected from the aforesaid group and the other two are linked together to form an aromatic or heterocyclic ring or two of said R groups are linked together to form an aromatic or heterocyclic ring and the other two R groups are also linked together to form an aromatic or heterocyclic ring with the proviso that at least one R is other than hydrogen and (b) 0 to 3.0 mol % based on the dihalogenobenzene content of a polyhalogeno aromatic compound of the formula ArX.sub.n (IV) wherein Ar is an aromatic or heterocyclic radical with 6 to 24 carbon atoms, X is halogen and n is ≧3 with (c) an alkyl metal sulphide in (d) a polar solvent in the presence of (e) 0.05-2.0 mol of alkali metal fluoride per mol of alkali metal sulphide, said alkali metal fluoride being selected from the group consisting of sodium fluoride, potassium fluoride and mixtures thereof, for a polycondensation time of up to 30 hours and at a polycondensation temperature of between 160° to 295° C., the molar ratio of (a) to (c) being in the range from 0.85:1 to 1.15:1 and the molar ratio of (c) to (d) being in the range of from 1:2 to 1:15.
Claim 2
Dependent Claim
315 words
A process for preparing a polyarylene sulphide which consists essentially of reacting (a) dihalogenobenzene consisting of 50 to 100 mol % of a compound of the formula ##STR6## or a compound of the formula ##STR7## or a mixture thereof and 0 to 50 mol % of a compound of the formula ##STR8## wherein X is halogen and each R is selected from the group consisting of hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, alkaryl having 7 to 24 carbon atoms and aralkyl having 7 to 24 carbon atoms or two of said R groups are selected from the aforesaid group and the other two are linked together to form an aromatic or heterocyclic ring or two of said R groups are linked together to form an aromatic or heterocyclic ring and the other two R groups are also linked together to form an aromatic or heterocyclic ring with the proviso that at least one R is other than hydrogen and (b) 0 to 3.0 mol % based on the dihalogenobenzene content of a polyhalogeno aromatic compound of the formula ArX.sub.n (IV) wherein Ar is an aromatic or heterocyclic radical with 6 to 24 carbon atoms, X is halogen and n is ≧3 with (c) an alkyl metal sulphide in (d) a polar solvent in the presence of (e) 0.05-2.0 mol of alkali metal fluoride per mol of alkali metal sulphide, said alkali metal fluoride being selected from the group consisting of sodium fluoride, potassium fluoride and mixtures thereof, for a polycondensation time of up to 30 hours and at a polycondensation temperature of between 160° to 295° C., the molar ratio of (a) to (c) being in the range from 0.85:1 to 1.15:1 and the molar ratio of (c) to (d) being in the range of from 1:2 to 1:15.
Claim 3
Dependent Claim
33 words
A process according to claim 1 wherein 50 to 100 mol % of a compound of formula I and 0-50 mol % of a compound of formula III are employed as component (a).
Claim 4
Dependent Claim
21 words
A process according to claim 1 wherein 100 mol % of a compound of formula I is employed as component (a).
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein the polycondensation time of 0.2 to 8 hours.
Claim 6
Dependent Claim
16 words
A process according to claim 1 wherein the polycondensation temperature is between 190° and 275° C.
Claim 7
Dependent Claim
30 words
A process according to claim 1 wherein the reaction is carried out in the presence of 0.1 to 1.0 mol of alkali metal fluoride per mole of alkali metal sulphide.
Claim 8
Dependent Claim
10 words
A process according to claim 1 wherein (d) is N-methylpyrolidone.
Claim 9
Dependent Claim
12 words
A process according to claim 1 wherein X is chlorine or bromine.