Aromatic polyether-polythioether-polysulfone thermoplastics
AssigneeUniroyal, Inc.
InventorFrancis X. O'Shea
Life of this patent
Estimating the term…
Abstract
Thermoplastic copolymers are formed by the interaction of a 4-mercaptophenol and a dihalo-substituted aromatic sulfone of the structure X--phenylene-SO.sub.2 2-phenylene) .sub.y X, wherein y is 1 or 2. The latter are typified by 4,4'-dichlorodiphenyl sulfone and 4,4'-bis(4-chlorophenylsulfonyl)biphenyl. The mercoptophenol may have one or two lower alkyl groups ortho to the hydroxyl. The polymers are characterized by high glass transition temperatures and high impact strength.
Claims8
Thermoplastic high polymers consisting essentially of the structure
- [ R ( C.sub.6 H.sub.4 --SO.sub.2 --C.sub.6 H.sub.4 ) .sub.y ] .sub.n,
- wherein y is 1 or 2, n is an integer from about 30 to 60, R is a mixture of --O--R'--S-- and --S--R'--O--, and R' is selected from the group consisting of phenylene, methylphenylene and dimethylphenylene groups.
A moldable polyether-polysulfide-polysulfone consisting essentially of the structure [ R--(C.sub.6 H.sub.4 --SO.sub.2 --C.sub.6 H.sub.4).sub.y ] .sub.n, wherein y is 1 or 2, n is an integer from about 30 to 60, R is a mixture of O--R'S-- and --S--R'--O--, and R' is selected from the group consisting of phenylene, methylphenylene and dimethyl phenylene groups.
A method of preparing a polyether-polysulfide-polysulfone consisting essentially of reacting substantially equimolar amounts of an alkali metal salt of a 4-mercaptophenol of the formula HO--R'--SH wherein R' is selected from the group consisting of phenylene, methylphenylene and dimethyl phenylene groups and a dihalide compound of the formula X [ C.sub.6 H.sub.4 --SO.sub.2 --C.sub.6 H.sub.4 ] .sub.y X wherein y is 1 or 2 and X is chlorine and the reaction is conducted in an anhydrous solvent.
Dependencies are inferred from the claim text.