C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/2, 403/3, 40
C08G 75/02 (2006.01) C08L 81/00 (2006.01) C08L 81/02 (2006.01) C08L 81/06 (2006.01) C08L 39/04 (2006.01) C08L 65/00 (2006.01) C08L 71/00 (2006.01) C08L 77/00 (2006.01) C08L 79/08 (2006.01)
Patent
CA 1228445
ABSTRACT OF THE DISCLOSURE 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.
407039
Quella Ferdinand
Schmidt Hans-Friedrich
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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