Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-01-16
1976-10-19
Schofer, Joseph L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 47R, 260 61, C08G 7514
Patent
active
039870162
ABSTRACT:
Polyphenylene sulfides are synthesized by refluxing a mixture of an aromatic sulfide and an aromatic dibromide such as m-benzenedithiol and m-dibromobenzene in a basic medium of potassium carbonate in dimethylformamide or dimethylacetamide. The products obtained are slightly off-white with relatively low melting ranges and have inherent viscosities in the 0.2 to 0.4 dl/g range in hexamethylphosphoric triamide. Similar polyphenylene sulfides containing pendant cyano groups along the polymer chains were obtained using 5 mole-% of either 2,4-dichlorobenzonitrile or 3,5-dichlorobenzonitrile as a reaction constituent. The products were similar to the pure polyphenylene sulfides except that they showed lower melting ranges and gave insoluble products when heated alone or in the presence of zinc chloride.
REFERENCES:
patent: 3432468 (1969-03-01), Gabler
patent: 3706702 (1972-12-01), Studinka et al.
patent: 3882092 (1975-05-01), Moberly
patent: 3919177 (1975-11-01), Campbell
Haddad Ibrahim E.
Hurley Shaun A.
Marvel Carl S.
Kulkosky Peter F.
O'Brien William J.
Rusz Joseph E.
Schofer Joseph L.
The United States of America as represented by the Secretary of
LandOfFree
Method for the preparation of polyarylene sulfides containing pe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the preparation of polyarylene sulfides containing pe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of polyarylene sulfides containing pe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-101325