Stabilized sulfur-containing resins, such as polyphenylene sulfi

Details Stabilized sulfur-containing resins, such as polyphenylene sulfi Stabilized sulfur-containing resins, such as polyphenylene sulfi

1982-06-14

1984-05-08

Lieberman, Allan

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525420, 525535, 525536, 525537, 525150, C08L 8100, C08L 8104, C08L 8106

Patent

active

044475810

ABSTRACT:
Sulfur-containing polymers, such as polyphenylene sulfide, are stabilized from releasing sulfur-containing exhaust gases by adding an additive polymer having at least one reactive radical selected from the group consisting of amino radicals, amido radicals, imido radicals, and keto radicals therein, and which is of approximate the same thermal stability as the sulfur-containing polymer, to such sulfur-containing polymer. In other embodiments of the invention, sulfur-stabilization is also achieved by incorporating suitable fundamental building blocks of the additive polymer into the sulfur-containing polymer chain in the form of reactive monomers. Further, in other embodiments, additive polymers or oligomers (so-called telecheles) having reactive radicals at their ends can be introduced into the sulfur-containing polymer chain as copolymers. In addition, low molecular weight compounds having high boiling points and having structures similar to the fundamental building blocks of the sulfur-containing polymers are also effective for stabilizing such polymers.

REFERENCES:
patent: 4238585 (1980-12-01), Bertozzi
patent: 4340697 (1982-07-01), Aya et al.
Dr. F. Quella, "Thermal-Oxidative Decomposition of Polyphenylene Sulfide at Use and Processing Temperatures", Kunststoffe, vol. 71, No. 6, (1981), pp. 386-388, Along with a Translation of the Abstract.

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