Claims
- 1. A stabilized crystalline polyphenylene sulfide having a reduced degree of oxidizing cross-linking characteristics, and having a crystalline melting point in the range of about 250.degree. C. to about 350.degree. C. which comprises at least 90 mole % of a recurring unit, ##STR25## wherein n is greater than 20, and about 0.05 to about 10 mole % per phenylene sulfide unit of an aromatic constituent chemically bonded with said polyphenylene sulfide chain, said aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, and --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups, alkaline metals, or --CONH--.
- 2. The stabilized polyphenylene sulfide of claim 1 wherein the electron attractive group is selected from the group consisting of --SO.sub.2 -- and --CO--.
- 3. The stabilized polyphenylene sulfide of claim 1 wherein the viscosity is at least 100 poise at a temperature of 300.degree. C. and a shear rate of 200 sec..sup.-1.
- 4. A film formed of the stabilized polyphenylene sulfide of claim 1.
- 5. An injection molded product formed of the stabilized polyphenylene sulfide of claim 1.
- 6. A fiber formed of the stabilized polyphenylene sulfide of claim 1.
- 7. A powder for electronic parts encapsulation of the stabilized polyphenylene sulfide of claim 1.
- 8. A method of preparing a stabilized crystalline polyphenylene sulfide having a reduced degree of oxidizing crosslinking characteristics and having a crystalline melting point in the range of about 250.degree. C. to about 350.degree. C., which comprises preparing a polyphenylene sulfide consisting of at least 90 mole % of a recurring unit, ##STR26## wherein n is greater than about 20, and reacting said polyphenylene sulfide at 150.degree. to 280.degree. C. with 0.05 to 20 mole % per said phenylene sulfide unit of a halogenated aromatic constituent chemically bonded with said polyphenylene sulfide chain, the aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, and --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups, alkaline metals or --CONH--.
- 9. The method of claim 8 wherein said halogenated aromatic compound having an electron attractive group is ##STR27##
Priority Claims (1)
Number |
Date |
Country |
Kind |
55-165896 |
Nov 1980 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 321,695, filed 11/16/81 now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
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321695 |
Nov 1981 |
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